Session Index

Optical Design

Optical Design I
Thursday, Dec. 3, 2020  13:15-14:45
Presider: Dr. Fu-Ming Chuang
Room: 6AB Room 427
13:15 - 13:45 Manuscript ID.  0810
Paper No.  2020-THU-S0501-I001
Invited Speaker:
Fu-Ming Chuang

Challenges of Near to Eye Display for Augmented Reality
Fu-Ming Chuang;Hsin-Hsiang Lo;Chuan-Chung Chang;Chung-Jen Ou

Augmented Reality (AR) displays are attracting significant attention and efforts recently. One of the solution to compromise both the time multiplexing and Vergence-Accommodation Conflict (VAC) is the Varifocal lens (VFL) based approach. This report addressed four major challenges on VFL-AR system, and the results suggest feasible treatments for better user experiences.

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13:45 - 14:00 Manuscript ID.  0379
Paper No.  2020-THU-S0501-O001
Jui-Chi Chang
Award Candidate
Fast Frequency-resolved Optical Gating Convergence based on Time and frequency Constrains
Jui-Chi Chang;Chia-Yuan Chang

The frequency-resolved optical gating (FROG) is powerful technique for measuring the ultrashort laser. However, the reconstruction algorithm based on iterative process lowers the detection rate. In this paper, utilizing the time and frequency constrains, we can estimate the initial electrical function of amplitude and phase to improve the convergence rate.

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14:00 - 14:15 Manuscript ID.  0304
Paper No.  2020-THU-S0501-O002
Cheng-Ching Chen
Award Candidate
Asymmetric Light-guide Design for LED Headlight with Nonuniformity Light Pattern
Cheng-Ching Chen;Jia-bao Shen;Tsung-Xian Lee

The purpose of this paper is to focus on the design of the optical module of LED projection headlight with an asymmetric light-guide and remove the shield. We propose three structures and optimize them, including coaxial, curved and combined light-guide.

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14:15 - 14:30 Manuscript ID.  0679
Paper No.  2020-THU-S0501-O003
Shih-Kang Lin
Award Candidate
Single Reflector for High-intense High/low Beam for ECE Regulation
Shih-Kang Lin;Yu-Hsiang Lee;Chih-Shou Wu;Yeh-Wei Yu;Tsung-Hsun Yang;Ching-Cherng Sun

In this paper, we proposed an optical design for both high beam and low beam in a single reflector. The performance of the final design has been proven both meeting the regulation in simulation and experiment. The maximum illuminance reaches to 396 lux in simulation and 226.8 lux in measurement.

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14:30 - 14:45 Manuscript ID.  0270
Paper No.  2020-THU-S0501-O004
Luan-Ying Chen
Award Candidate
The Study of Array Illumination Module for Adaptive Headlight System Application.
Kao-Der Chang;Jui-Wen Pan;Luan-Ying Chen

Adaptive headlight system is an optical control technology that can adjust the light distribution of headlight depending on the driving environment. This system utilizes multiple collimated light to assemble automotive lighting areas with pixels. The distribution of the headlight can be changed when controlling the greyscale of the pixel.

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Optical Design

Optical Design II
Thursday, Dec. 3, 2020  16:20-17:50
Presider: Prof. Yu-Chieh Cheng
Room: 6AB Room 427
16:20 - 16:50 Manuscript ID.  0822
Paper No.  2020-THU-S0502-I001
Invited Speaker:
Yu-Cheng Chen

Biological Lasers: Micro-Nano Lasers for Next Generation Biomedical Sensing and Imaging
Yu-Cheng Chen

Bio-lasers are emerging technology for next generation biochemical detection and biophotonic applications. Recently, laser-based detection has been exploited as a novel tool in biosensing due to their capability to amplify subtle changes in the gain media caused by underlying biological processes. Laser emission has unique merits over fluorescence, including threshold-gated emission, narrow linewidth, and strong intensity, leading to ultrasensitive detection of intracellular dynamics, and superior contrast for higher spectral/spatial resolution imaging. In this talk, I will introduce the recent advances of biolasers in cells, tissues, and neuronal networks, by using several types of micro laser cavities, such as optofluidic ring resonators and high-Q Fabry-Pérot mirrors. Next, we demonstrate the possible implementation of biolasers into an automated lasing system for systematic and statistical analysis, including an integrated cellular laser array device and laseremission microscopy for cancer screening and immuno-diagnosis. Furthermore, optical recording of calcium transients during spontaneous neuronal activities was first demonstrated via neuron lasers with a significantly improved sensitivity, not only for monitoring neuronal network dynamics but an ultra-sensitive detection method for brain-on-chip applications and neuro-analysis. Finally, discussion and outlook is made on the strategies through biolasers and to pioneer novel on-chip devices for future clinical diagnosis, prognosis, and fundamental research in biomedicine.

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16:50 - 17:05 Manuscript ID.  0536
Paper No.  2020-THU-S0502-O001
Bao Le
Award Candidate
Design of 24 hours lighting system to Aid Sleep Patterns for Persons Living with Dementia
Aien Charity Grace White;Gulsatar Ali;Nafia AL-Mutawal;Bao Le;Jonathon David White

Light is not only for human vision but may also be a non-pharmacological method to improve the sleep cycle and quality life of people who have to live with dementia. Using LEDs, we have designed a 24-hour lighting timetable to simulate changes in daytime spectra for installation in long-term care.

17:05 - 17:20 Manuscript ID.  0614
Paper No.  2020-THU-S0502-O002
Yao-Hon Huang
Award Candidate
Open-Cavity Fiber Fabry-Pérot Interferometer Sensor Formed by Using Large Offset Splicing
Yao-Hon Huang;Chin-Ping Yu

A highly sensitive open-cavity fiber Fabry-Pérot interferometer (FPI) sensor is proposed by splicing an etched MMF with a HCF through a large offset of 50m. The measured refractive index and pressure sensing sensitivities are 1313.2 nm/RIU and 25.33 pm/psi, respectively, with very good linearity.

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17:20 - 17:35 Manuscript ID.  0592
Paper No.  2020-THU-S0502-O003
Yen-Ching Wu
Award Candidate
Using Photonic Crystals to Create One-Way Propagation by Pseudospin
Yen-Ching Wu

We deform a honeycomb lattice by shrunken or expanded the structure to induce the band inversion, which leads to a topological transition. At the boundary of nontrivial and trivial topological structure, we numerically demonstrate the characteristics of one-way propagation.

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17:35 - 17:50 Manuscript ID.  0150
Paper No.  2020-THU-S0502-O004
Che-Liang Tsai
Stray light analysis and system optimization of fundus camera
Che-Liang Tsai;Wai W. Wang;Vincent Chang;Brian Lin;Peter Chao

The stray light intensity arc of a retinal image in a fundus camera is analyzed. Besides the optimization of the hole mirror design, the impact of the hole mirror chamfer on the stray light intensity arc is also analyzed to preserve a clear retinal image in a fundus camera production.

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Optical Design

Optical Design III
Friday, Dec. 4, 2020  13:10-15:40
Presider: Prof. Shih-Tsong Lin
Prof. Yu-Chieh Cheng
Room: 6AB Room 727
13:10 - 13:40 Manuscript ID.  0824
Paper No.  2020-FRI-S0503-I001
Invited Speaker:
Vytautas Purlys

Femtosecond laser-based fabrication of 3D micro- and nanostructures
Vytautas Purlys

The femtosecond laser gained a reputation as a reliable and extremely precise tool for micro- and nanofabrication. Here we present our recent work in applying and finetuning fabrication techniques in several aspects, namely the significant enhancement of 3D resolution, dynamic throughput manipulation via shaping the laser beam and spatial light modulation, as well as combining laser processing with other established manufacturing techniques. Finally, additive 3D nano-manufacturing of non-organic structures is discussed, explaining the undergoing physical phenomena, and showing examples of produced 3D objects. In conclusion, we demonstrate yet another example of laser 3D processing being a powerful tool for advanced fabrication with far-reaching implications in various fields.

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13:40 - 13:55 Manuscript ID.  0030
Paper No.  2020-FRI-S0503-O001
Siao-Suang Liang
Triplet prism illustration method for minimizing chromatic aberration
Siao-Suang Liang;Ying-Ying Yu;Wen-Shing Sun

The optimum combination of three glass materials is obtained for correction of chromatic aberration using the three- prism combination Illustrating method and optimization program.

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13:55 - 14:10 Manuscript ID.  0089
Paper No.  2020-FRI-S0503-O002
Yi-Lun Su
High-efficiency automotive low beam design
Yi-Lun Su;Wen-Shing Sun;Shin-Chuang Huang

A white LED with a luminous flux of 146lm is used in this low beam vehicle light design. The design includes two prism arrays, a compound reflector, and a toroidal lens which was modified to correct the light pattern. The total received lumens was 123.9lm and the efficiency was 85.86%.

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14:10 - 14:25 Manuscript ID.  0090
Paper No.  2020-FRI-S0503-O003
Yu-Wei Sheu
The relative illumination of a DLP large-aperture projector lens
Yu-Wei Sheu;Bo-Heng Zhou;Wen-Shing Sun

We discuss the relative illumination for a large-aperture projector lens design. The EFL and f-number are 24.06mm and 1.741, respectively. The screen size is 206inches and the max-aperture is 74.86mm. We also derive the relative illumination equations for interface transmission, internal transmission and solid angle. The relative illumination is 98.7%.

14:25 - 14:40 Manuscript ID.  0121
Paper No.  2020-FRI-S0503-O004
Chih-Kai Chang
Analysis of the Lens Depth of a Periscope-type 3x Zoom Mobile Phone Lens
Chih-Kai Chang;Wei-Chen Tsao;Wen-Shing Sun

The periscope zoom lens depth depends either on the prism thickness or the maximum aperture of the zoom lens in the Y-direction. To reduce the periscope zoom lens depth to 5mm for an 8-Megapixel device, we use a 16:9 aspect ratio sensor with a rectangular aperture.

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14:40 - 14:55 Manuscript ID.  0189
Paper No.  2020-FRI-S0503-O005
Ching-Yao Huang
Simulation of Retinal Peripheral Refraction when Wearing Spectacles
Ching-Yao Huang

This study is to simulate the retinal peripheral refraction of emmetropic and myopic eyes when wearing correction spectacles at distance and near views. The results show that the myopic spectacle could enhance the retinal relative peripheral hyperopic refractions.

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14:55 - 15:10 Manuscript ID.  0427
Paper No.  2020-FRI-S0503-O006
Shao-Heng Chen
Dual-frequency Double-diffraction Type Laser Interferometer Based on Coplanar Detection Design for Four Degree-of-freedom Measurement
Shao-Heng Chen;Mo-Yun Chen;Hung-Lin Hsieh

An innovative dual-frequency double-diffraction type laser interferometer based on coplanar detection design is proposed. The proposed method takes “grating” as the core of technology development. By integrating the advantages of heterodyne dual-frequency interferometry and coplanar detection double-diffraction optical design, the system has high resolution, high repeatability and multi-degree-of-freedom measurement capabilities.

15:10 - 15:25 Manuscript ID.  0206
Paper No.  2020-FRI-S0503-O007
Bo-Ting Li
Image Reconstruction of FD DOT Using synchronous multi-frequency driving light sources
Hong-Wei Gan;Bo-Ting Li;Min-Chun Pan

The study explored and implemented image reconstruction of three-dimensional diffuse optical tomography using synchronous multi-frequency driving light source. To the purpose square waves were employed so that multiple sets of light intensity and phase lag information can be obtained in a single measurement.

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15:25 - 15:40 Manuscript ID.  0647
Paper No.  2020-FRI-S0503-O008
Sumesh Sethumadhavan Nair
Portable Laser Pest Control System with Deep Learning
Sumesh Sethumadhavan Nair;Chia-Ying Chang;Feng-Chun Hsu;Ching-Chieh Su;Shean-Jen Chen

A portable laser pest control system employing deep learning for Caterpillar head identification using YOLO was developed. On detecting the head, laser beams were utilized to render the caterpillars powerless. On-field testing was performed for the system and the results were noted.

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Optical Design

Optical Design S
Friday, Dec. 4, 2020  13:10-15:40
Presider: Prof. Chuen-Lin Tien
Room: 6AB Room 427
13:10 - 13:40 Manuscript ID.  0829
Paper No.  2020-FRI-L0503-I001
Invited Speaker:
Yi-Jen Chiu

On-chip Si photonics integration of semiconductor superluminescent diode toward miniature interferometric fiber optical gyroscope chip
Yi-Jen Chiu;Rih-You Chen;Yang-Jeng Chen;Cheng-Hui Dong;Yen-Chieh Wang;Yung-Jr Hung;Min-Chi Chan;Chia-Chien Wei;Wei Lin

A hybrid Si photonics integration has been used in developing interferometric fiber optics gyroscope on silicon photonics template. An on-chip Si photonic chip has been used as optical driver of IFOG. With employing wafer bonding technology, efficient optical coupling into Si waveguide has been realized by on-chip integration of SLD. Different SLD optical coupling schemes by hybrid integration will be discussed.

13:40 - 13:55 Manuscript ID.  0667
Paper No.  2020-FRI-L0503-O001
Jyh-Cheng Yu
Optical Design of Light Guide Plate with Unilateral Light Emission for Innovative Curved LED Luminaire
Jyh-Cheng Yu;Tung-Min Hsieh

This study proposes a novel LGP design with unilateral light emission, which is applied to a curved LED luminaire without reflective sheet. The LGP adopts convex cylindrical features of ϕ1×0.7 (mm), which provides 90% illuminance on the feature side of LGP. A prototype is presented to verify the design.

13:55 - 14:10 Manuscript ID.  0725
Paper No.  2020-FRI-L0503-O002
Shyh-Tsong Lin
Differential interference contrast microscope using liquid crystal Savart prisms as the shear devices
Shyh-Tsong Lin;Ting-Yu Chien;Jie-Jiun Liou;Huan-Chih Lin

A differential interference contrast microscope (DICM) is proposed . It is the same as a phase-shifting polarizing microscope except one liquid-crystal Savart prisms inserted in between the objective and sample and it possesses an advantage over conventional DICM of without mechanical movements when switching shear directions.

14:10 - 14:25 Manuscript ID.  0344
Paper No.  2020-FRI-L0503-O003
Cheng-Mu Tsai
Design of Freeform Lens by Using Numerical Method to Convert the Laser Beam with Collimated Rotation-Symmetric User-defined Profile
Chen-Kang Wu;Feng-Ming Liu;Cheng-Mu Tsai

A freeform lens construction is proposed to form a specific rotation symmetric beam profile with collimation. The freeform surface is constructed segment-by-segment using a numerical method based on Snell’s law to produce an output beam profile which has both good irradiance user-defined profile and high collimation.

14:25 - 14:40 Manuscript ID.  0623
Paper No.  2020-FRI-L0503-O004
Guo-Dung Su
Design Methodology of Thin Telephoto Lenses by Using Sub-wavelength Structures
Tsung-Jung Chuang;Chun-Yuan Fan;Guo-Dung Su

In this paper, we describe a design methodology combining ray tracing, FDTD simulation, S-parameter method, and near-to-far-field transformation to establish a standard operation process for designing metalenses system with sub-wavelength structures. The results show a telephoto lens with FOV  20o and thickness less than 6 mm.

14:40 - 14:55 Manuscript ID.  0823
Paper No.  2020-FRI-L0503-O005
Ching-Cherng Sun
Two Major Problems in Designing an Effective Volume Holographic Optical Element and the Potential Solutions
Ching-Cherng Sun

Volume holographic optical element (VHOE) has been shown its potential to modern IT devices, including near-eye glass. A designer, however, has no an effective approach to design a useful VHOE. The reason is that there are two remain problems which must be solved in the design approach. This talk is aimed to discuss these two problems and the potential solutions will be proposed.

14:55 - 15:10 Manuscript ID.  0275
Paper No.  2020-FRI-L0503-O006
Chun-Jen Chen
The development of a surface defect of ceramic substrate inspection system with a line scan camera for high and low-resolution
Hsuan-Wei Chang;Chun-Jen Chen

This paper build a measurement system, it has both high resolution and fast image recognition. In this system, a 4K line scan camera connects a macro lens with a focal length of 60 mm, and a linear light source is used to measure surface defects of the object.

15:10 - 15:25 Manuscript ID.  0053
Paper No.  2020-FRI-L0503-O007
Pin Han
Spectra manipulation with the photorefractive effect via the spatial–spectral correspondence relationship
Hsun-Ching Hsu;Pin Han

The photorefractive effect is used to manipulate polychromatic spectra. A sinusoidal phase grating is used to diffract polychromatic light. Theoretical analyses and numerical examples show that for different detection angles, the diffracted spectrum exhibits different features, and that specific spectral line selection or line filter effects are achieved.

15:25 - 15:40 Manuscript ID.  0310
Paper No.  2020-FRI-L0503-O008
Chaohsien Chen
Solution Spaces of the Zoom Curves of Two-Component Finite-Conjugate Zoom Lenses
Chaohsien Chen

Two-component finite conjugate zoom lenses are widely used in optical systems. Suitable combinations of the component focal lengths are essential for giving successful zoom curves. The solution spaces of the component focal lengths for solving the real and positive thickness from the first to the second components are described.


Optical Design

Poster Session I
Friday, Dec. 4, 2020  15:40-17:30
Presider: Prof. Chien-Ming Chen
Prof. Cheng-Mu Tsai
Room: 6AB Courtyard
Manuscript ID.  0626
Paper No.  2020-FRI-P0501-P001
Yu-Hsin Chia
Award Candidate
Telecentric design for long axial scanning in optical sectioning microscope using diffraction Moiré component
Yu-Hsin Chia;Sunil Vyas;Hsin-Yu Kuo;Yi-You Huang;Din Ping Tsia;Yuan Luo

We present a telecentric design to obtain constant magnification with long axial scanning range in optical sectioning microscope. A Moiré lens is designed and used for this purpose. Design principles of our system are explained through mathematical expression and simulation results are provided for different conditions.

Manuscript ID.  0364
Paper No.  2020-FRI-P0501-P002
Huang Jun Xiang
Award Candidate
Cost effective colorimetric pyrometer design for laser-based additive manufacturing
Huang Jun Xiang;Lin Yuan Yao

A cost effective optical design for colorimetric pyrometer was developed for laser-based additive manufacturing facility. Equipped with diffraction gratings and fiber array element, the colorimetric pyrometer has its robustness in sensing wavelengths and number of channels which is adaptive for characterizing thermal radiation from mixtures of black/gray bodies.

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Manuscript ID.  0061
Paper No.  2020-FRI-P0501-P003
Che-Ying Chiu
Award Candidate
Development of a Double-diffraction Common Path Linear Encoder
Che-Ying Chiu;Ren-Hao Chen;Hung-Lin Hsieh

This study proposed a novel common path linear encoder. By combining with double-diffraction, interferometry, grating interferometry and common optical path techniques, the system can precisely measure in-plane displacement, while having the advantages of high sensitivity, high stability, high tolerance and has been miniaturized successfully.

Manuscript ID.  0155
Paper No.  2020-FRI-P0501-P004
Yi-Chen Cheng
Award Candidate
High-Performance Plasmonic Huygens Metasurfaces
Yi-Chen Cheng;Amir Hassanfiroozi;Pin Chieh Wu

In this work, we proposed a plasmonic Huygens metasurface with a state-of-the-art circular polarization conversion efficiency beyond 50% at telecom wavelengths. We highlight the feasible applications of our high-performance metasurface via demonstration of a beam deflector and a focusing metalens.

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Manuscript ID.  0417
Paper No.  2020-FRI-P0501-P005
Stotaw Talbachew Hayle
A Hybrid of Fiber and Free Space Optic for Optical Access Network
Stotaw Talbachew Hayle;Yibeltal Chanie Manie;Guan-Ming Shao;Po-Han Chiu;Tsung-Yuan Yeh;Song-Lin You;Peng-Chun Peng

In this paper, we demonstrated a hybrid of optical fiber and free-space optics (FSO) for optical access networks. The experimental result proves that the hybrid of 25 km SMF with free space optic link increases the communication coverage range with a reasonable performance.

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Manuscript ID.  0613
Paper No.  2020-FRI-P0501-P006
Amare Mulatie Dehnaw
Spectrally Overlapped Wavelength Detection of Optical Sensor Network Using Deep Learning
Amare Mulatie Dehnaw;Yibeltal Chanie Manie;Ya -Yu Chen;Po -Han Chiu;Hung -Wei Huang;Guan -Wei Chen;Peng -Chun Peng

We have designed precise and fast Gated Recurrent Unit (GRU)deep learning model to detect the Bragg sensor wavelengths from the reflected overlapping spectra within the sensor network.The performance of the proposed model is good, even when the FBG sensor number is increased and the spectra is completely overlapped.

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Manuscript ID.  0039
Paper No.  2020-FRI-P0501-P007
Yuan-Hsiang Chen
Development of optical fiber device technique induced chlorophyll fluorescence for plant water status
Yuan-Hsiang Chen;Yi-Jim Chen;Jau-Sheng Wang

he plant water content changes, it also changes the chlorophyll concentration. Therefore, we study the use of chlorophyll fluorescence to combine the fiber and improve the previous structure. By fixing the fiber to the surface of leaf to determine the water content by sensing the change of chlorophyll fluorescence.

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Manuscript ID.  0215
Paper No.  2020-FRI-P0501-P008
Wen-Sheng Hsiao
Secondary Lens Design of LED Mosquito Trapping Lamp
Wen-Sheng Hsiao;Wei-Hsiung Tseng;Hsiao-Yi Lee;Hsin-Yi Ma

In this study, a special lampshade with a different structure is used to generate a UV LED inducing mosquito system. UV LED uses a specific wavelength of light (365nm UV LED) and matches the black appearance, as well as a solar energy-saving switching device, which maximizes the incentives. .

Manuscript ID.  0650
Paper No.  2020-FRI-P0501-P009
Hong-Yu Jhao
Design of lensless full-screen optical fingerprint sensor
Hong-Yu Jhao

Smart phones equipped with biometric systems have become a trend. Fingerprint recognition is most common in biometrics. We propose a novel concept to design a full-screen optical fingerprint recognition system. The principle of optical fingerprint recognition mainly requires the calculation of Fresnel equation.

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Manuscript ID.  0151
Paper No.  2020-FRI-P0501-P010
Optical Design and Simulation for High Performance LED Head Light Lens Package
ZENG WEI LUN;Chen Guan Zhen;Pin Han

This study uses Solidworks for optic to draw and simulate a lens package for LED head light. This lens shape is made from an ellipse around a circle. By adjusting the size of the circle and the ellipse appropriately, the best with the latest head light regulation ECE R113.

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Manuscript ID.  0615
Paper No.  2020-FRI-P0501-P011
Li-Jen Hsiao
Conceptualization and Design of CGH for Manufacture Tests of Large Ashperic Primary Mirror
Li-Jen Hsiao;Hsin-Yu Wu;Wei-Che Chang;Po-Hsuan Huang;Yi-Kai uang;Yung-Hsien Liu

A CGH component is designed for testing a large aspheric mirror as a part of its manufacturing process, with assist features are to assist in proper alignment to minimize alignment error.

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Manuscript ID.  0120
Paper No.  2020-FRI-P0501-P012
Hui-Kai Lin
The online analytic system of industry ion concentration
Hui-Kai Lin;Yen-Hsiang Wang;Kuan-Chieh Lee;Jen-Jie Chieh

Because of the long detection time and the generation of consumable waste liquid. Our developed is to integrate optical detection technology, IoT system, cloud construction and AI algorithm to develop an online concentration analysis system of one ion (copper, nickel, iron, chlorine), which is an important application for smart manufacturing.

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Manuscript ID.  0791
Paper No.  2020-FRI-P0501-P013
Ming-Hung Chiu
Optical rotation measure by using the common-path heterodyne interferometry and a half-wave plate
Ming-Hung Chiu;Chen-Tai Tan;Chun Wang;Jia-Nong He

We proposed a method for small polarization rotation measurement that is based on the use of a half-wave plate and a high-stability common-path heterodyne interferometry, When the azimuth angle at 22.5 degree of a half-wave plate, the phase has a distinct change caused by the the incident light.

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Manuscript ID.  0133
Paper No.  2020-FRI-P0501-P014
Ya-Chen Tsai
Optical design of high beam for laser headlight using DMD
Ya-Chen Tsai;Ken-Yu Cheng;Hsun-Ching Hsu;Pin Han

This research is a headlight simulation using diode lasers combined with a Digital Micromirror Device (DMD). Use fast axis and slow axis collimator (FAC/SAC) to collimate the diode laser. Establish a lens (LENS2) to enlarge the light projection angle to comply with ECE R113 Class D, E high beam regulations.

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Manuscript ID.  0156
Paper No.  2020-FRI-P0501-P015
Chen-Yu Yeh
The LED Headlamp with Integrated Low-beam and High-beam Light
Chen-Yu Yeh;Bing-Mau Chen;Shang-Ping Ying

In this study, a projector type headlamp using LEDs is proposed to be the vehicle lamp with integrated low-beam and high-beam light. The design of low-beam LED headlamp with a top ellipsoidal reflector and a baffle plate is used to achieve a LED headlamp with a low-beam cutoff line.

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Optical Design

Optical Design IV
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Chien-Chung Lin
Room: 6AB Room 527
10:30 - 10:45 Manuscript ID.  0297
Paper No.  2020-SAT-S0504-O001
Dong Bao To
Dark Line Laser
Dong Bao To;Hsiung Ming Wu;Chieh Yen Huang

We demonstrate a laser that is prohibited to emit at a particular wavelength, called a dark line, in the emission background of its gain spectrum. The dark line laser is generated from the high-loss resonances of a 150-μm thick etalon mirror in an ytterbium doped fiber laser.

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10:45 - 11:00 Manuscript ID.  0424
Paper No.  2020-SAT-S0504-O002
Jia-Hao Hsu
Plasmonic Bound States in the Continuum in Periodic Metal Structures
Jia-Hao Hsu;Jia-Hao Hsu

We numerically analyzed the bound states in the continuum (BICs) in 1D periodic metallic bar structures and found the accidental BICs. By changing the parameters of the metal structure, we verify the topological nature of the BICs which move along the Brillouin zone and persist under fine-tuning.

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11:00 - 11:15 Manuscript ID.  0415
Paper No.  2020-SAT-S0504-O003
I-Cheng Liu
NH3 Photoacoustic Gas Sensing at 1550 nm
I-Cheng Liu;Pei-Ling Luo

We demonstrated the NH3 gas sensing by means of DFB tunable laser coupled with a photoacoustic cell near 1550 nm. The detection limit of NH3 was estimated to be 25 ppm. Furthermore, in the flowing system, the noise can be restrained by using differential photoacoustic detection.

  Preview abstract
11:15 - 11:30 Manuscript ID.  0694
Paper No.  2020-SAT-S0504-O004
Guang-Yan Liu
Eliminate spherical aberration of ball lens by using meta-corrector
Guang-Yan Liu;Jui-Wen Pan;Chih-Ming Wang

In this study, the spherical aberration is eliminated via a free-form phase correction function designed by using Zemax. In the measurement, we add the phase function into a SLM. The spot size is reduced 23%. In the future, a metasurface for eliminating the aberration will be fabricated and measured.

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11:30 - 11:45 Manuscript ID.  0380
Paper No.  2020-SAT-S0504-O005
Wu Yu-Cheng
Model-based Adaptive Optics System with FPGA
Wu Yu-Cheng;Chang Chia-Yuan

The home-made Shack-Hartmann wavefront sensor (SHWS) returns the coefficients of 8 primary Zernike modes representing the optical aberrations. Based on the identified model of the deformable mirror in the adaptive optics system (AOS), we implement optimized digital controller to rapidly compensate the aberrations and restore the laser focusing spot quality.

  Preview abstract
11:45 - 12:15 Manuscript ID.  0838
Paper No.  2020-SAT-S0504-I001
Invited Speaker:
Yasuhiro Awatsuji

Ultrafast motion picture of light propagation recorded by holography using a femtosecond pulsed laser
Yasuhiro Awatsuji

The authors present holographic recording of slow-motion pictures of light propagation. The motion picture of not only 2D image but also 3D image of light propagation with the temporal resolution of 96 femtoseconds are demonstrated.

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Optical Design

Poster Session II
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Wen-Jeng Ho
Room: 6AB Courtyard
Manuscript ID.  0211
Paper No.  2020-SAT-P0502-P001
Cheng Xian Yu
Optical Design of High Pressured Sodium Counter Beam Light to Meet Enhanced Tunnel Lighting Regulations
Cheng Xian Yu;Lanh Thanh Le;Hsing Yuan Liao;Hsiao Yi Lee

A new counter beam light (CBL) with a 400W high pressured Sodium lamp was proposed for CIE:88 2004 regulated tunnel road lighting use. The optical component of the CBL was an optical reflector built by three curved metallic surface to control the beam pattern of the light.

Manuscript ID.  0706
Paper No.  2020-SAT-P0502-P002
chih yao ho
Tunable phase retarder of photo-aligned liquid crystal device
chih yao ho

We demonstrate the fabrication of the photo-aligned liquid crystal device and the characteristics of tunable phase retarder. We demonstrate two different subtract the fabrication and characteristic of AP(Anti parallel) LCD. The electro-optical properties and the transmittance change depending on the driving voltage are measured and discussed.

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Manuscript ID.  0021
Paper No.  2020-SAT-P0502-P003
Hien Thanh Le
Study of EU ECE Light Shaping diffuser for Automotive
Hien Thanh Le;Hsiao Yi Lee;Lanh Thanh Le;Hsing Yuan Liao;Hsin Yi Ma

This study investigates the optical design of the planar LEDs using light shaping diffusers. Glare Control diffusers exhibit a variety of appearances depending on illumination conditions.

Manuscript ID.  0067
Paper No.  2020-SAT-P0502-P004
Chen Sheng-Yen
The Secondary Lens Design of LED Counter Beam Tunnel Lights for CIE Regulations
Chen Sheng-Yen;Lee Hsiao-Yi;Liao Hsing-Yuan

A LED light is proposed and demonstrated to serve as the counter beam light in tunnel lighting. Making use of a secondary freeform lens owning two curved surfaces and one flat metal reflecting surface to control a 150W LED emitting rays

Manuscript ID.  0680
Paper No.  2020-SAT-P0502-P005
Ngoc Thi Thu Le
Optical model for LED die operated at UVC of wavelength around 275 nm
Ngoc Thi Thu Le;Shin-Kang Lin

This paper presents the optical model for a type of LED emitting a wavelength of 275 nm and the design of Fresnel lens with an acceptable optical utilization factor. We compare the results achieved between the simulation and the corresponding experiment.

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Manuscript ID.  0287
Paper No.  2020-SAT-P0502-P006
Yi-Cheng Hsu
The Study of Fabrication Tolerance Effect on Packaging Polarization Maintain Fiber Lens and Pump Laser
Tsun-Jen Hou;Yi-Cheng Hsu

The study demonstrates the packaging for polarization maintain fiber lens and pump laser and the results show that the relationship between fabrication tolerance and coupling efficiency and the relationship between fabrication tolerance and extinction ratio.

Manuscript ID.  0005
Paper No.  2020-SAT-P0502-P007
Chang JUI Chen
Optimization of Light-Emitting Diode Mosquito Trap System Effectiveness
Chang JUI Chen

A mosquito-collecting component that can be externally attached to the air inlet of a light-emitting diode mosquito-trapping system was developed to optimize the efficiency of the mosquito-trapping lamp and increase mosquito-trapping capacity. Used the three-dimensional computer-aided design software SolidWorks to build the system Finally,data obtained, mosquito-trapping efficiency was optimized.

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Manuscript ID.  0378
Paper No.  2020-SAT-P0502-P008
Xin-Li Lee
LED-based Automatic Fringe-resolved Autocorrelator
Chia-Yuan Chang;Xin-Li Lee;Jui-Chi Chang

The fringe-resolved autocorrelator is a widely adopted system for measuring the
ultrashort pulse characteristic. Based on the nonlinear optical response of the light-emitting
diode (LED), we can build a low-cost fringe-resolved autocorrelator. The automation can be
achieved by synchronizing the reference beam movement and the photocurrent detection based
on LabVIEW.

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Manuscript ID.  0037
Paper No.  2020-SAT-P0502-P009
Chun-hua Shu
Application of solar concentrator, high stability and environmental protection cadmium-free carbon quantum dots and changes in optical properties of different solvents
Jau-sheng Wang;Chun-hua Shu

We take carbon quantum dots, which are environmentally friendly and fluorescent colloidal quantum dot materials, as the research direction, and explore the effects of different solvents on their properties.

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Manuscript ID.  0204
Paper No.  2020-SAT-P0502-P010
Hao-Che Chang
Comparison of Reconstructed Diffuse Optical Images Using Fixed and Flexible Detection Channels
Pei-Ting Liu;Min-Chun Pan;Hao-Che Chang

The study explores and compares the reconstructed diffuse optical images using fixed and flexible detection channels. The results exhibit the quality of reconstructed images were obtained since the scanning platform with flexible detection channels performing radial displacement may conform to the contour of breast.

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Manuscript ID.  0070
Paper No.  2020-SAT-P0502-P011
Jhen wei Huang
Fiber optic sensor for robot arm application
Jhen wei Huang;Jau Sheng Wang

We use plastic optical fibers to make optical fiber ranging sensors and install them on the robotic arm to help determine the robot arm to grip the target. Based on the characteristics of the optical fiber ranging sensor, develop an algorithm for the mechanical arm to grip the soft object.

Manuscript ID.  0289
Paper No.  2020-SAT-P0502-P012
Yuan-Xi Li
Remote Camera-based Attack System with AI Threat Detection
Yi-Hung Li;Yuan-Xi Li;Chi-Hung Li

A portable AI-assisted remote camera-based attack system is proposed for detecting potential threat. The system is composed of two webcam, two Raspberry pi, an air compressor, a pistol and a Google coral USB accelerator. Compared with conventional surveillance systems, this remote camera- and AI-based system possesses more flexibility and precision.

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Manuscript ID.  0299
Paper No.  2020-SAT-P0502-P013
Cheng-Jung Yang
Shack-Hartmann Wavefront Sensor for Broadband Wavelength Range
Cheng-Jung Yang;Chia-Yuan Chang;Yu-Cheng Wu

The Shack-Hartmann wavefront sensor (SHWS) is a powerful tool to monitor the optical wavefront and decomposed into Zernike modes in real time. We have shown that using the center detection algorithm doesn’t only improve the analysis accuracy but also allow the wavelength detection range cover from ultraviolet to visible band.

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Manuscript ID.  0269
Paper No.  2020-SAT-P0502-P014
Jia-Ming Syu
Sensing Measurement of Hollow-Core Photonic Crystal Fiber Sensor
Jung-Sheng Chiang;Tsung-Han Chin;Jeng-Chian Lai;Jia-Ming Syu;Nai-Hsiang Sun

The sensing properties of negative curvature hollow-core photonic crystal fiber sensor by measurement are presented. The spectrum of the hollow-core photonic crystal fiber sensor is from sensing to different materials. The power loss is decreased as the refractive index of materials increased and having flattened variation at 1545-1560 nm wavelengths.

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