Session Index

S5. Optical Design, Testing, and Engineering

Optical Design, Testing, and Engineering III
Saturday, Dec. 2, 2023  10:45-12:00
Presider: Dr. Chuan-Chung Chang (Coretronic Corporation, Taiwan)
Room: 92225 (2F)
10:45 - 11:15
Manuscript ID.  1097
Paper No.  2023-SAT-S0503-I001
Invited Speaker:
Ching-Cherng Sun
Color Display Technology of a Near-Eye Glasses with a Lightguide System incorporated with Volume Holographic Optical Elements
Ching-Cherng Sun, National Central University (Taiwan)

We present a comprehensive study focusing on a near-eye display that incorporates a lightguide seamlessly integrated with volume holographic optical elements (VHOEs). By strategically integrating VHOEs for both in-coupling and out-coupling of the projection image, we have achieved a display with vibrant and rich color representation. The inherent angular degeneracy of the VHOEs ensures uniform diffraction along the vertical axis, and leveraging wavelength degeneracy and multiplexing significantly extends the field of view (FOV) laterally within the lightguide displays. Crucially, this groundbreaking technology relies on pure optical management, highlighting its immense potential to drive the advancement of outstanding VHOE-lightguide displays for augmented reality glasses.

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11:15 - 11:30
Manuscript ID.  0304
Paper No.  2023-SAT-S0503-O001
Chih-Hao Lin Design and Validation of a Low Aberration Integral Imaging System for 3D Industrial Inspection
Chih-Hao Lin, Ming-Fu Chen, Taiwan Instrument Research Institute (Taiwan); Po-Ming Lin, Taiwan Space Agency (Taiwan)

3D optical inspection is closely watched for manufacturing semiconductor products with high integration density. The 3D integral imaging system is economic but low-aberration designing is difficult. By the design process including sequential and non-sequential analysis by commercial optical design software, a low aberration integral imaging system is designed and fabricated. The all-in-focus image and the depth map of pins of SATA on a PCIe card clearly show deeper regions. However, depth estimation on regions with special patterns or with extreme gray levels are inaccurate, which will be improved by a customized lighting and a machine-learned image denoising algorithm.

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11:30 - 11:45
Manuscript ID.  0256
Paper No.  2023-SAT-S0503-O002
Shao-Hsuan Wu, National Tsing Hua University (Taiwan); Yiyao Zhang, University of Liverpool (UK); Chia-Ming Mai, Shang-Hua Yang, National Tsing Hua University (Taiwan)

Terahertz (THz) imaging has advanced significantly, finding diverse applications in various fields. Highly polarized materials' absorption coefficient limits THz imaging, but using water in the sub-THz region can help overcome this. This study explores epoxy resin (AB glue) as a diffuser for sub-THz imaging array-detector systems, offering cost-effectiveness and ease of shaping due to its high refractive index. The novel diffuser enhances sub-THz imaging resolution, making THz technology more versatile. The sub-THz diffuser light source system achieves a frame rate of at least 30 fps using a commonly available commercial rotation motor, improving real-time imaging capabilities.

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11:45 - 12:00
Manuscript ID.  0358
Paper No.  2023-SAT-S0503-O003
Tsung-Han Lee Improving Optical Performance of Spherical Cooke Triplet Lens Using Meta-corrector
Tsung-Han Lee, Chen-Yi Yu, Shang-Ping Yeh, Chih-Ming Wang, National Central University (Taiwan)

In this study, we design a metalens with smaller size as 0.9 mm to consist of Cooke triplet to eliminate the aberrations at wavelength of λ = 940 nm. With this design, we successfully decreased the spot size from 349 μm to 0.533 μm, it also can efficiently pave the way for further mass production of this technology.

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