Journal of optical microsystems最新文献_第2页

Reflowable liquid crystal geometric phase element for vertical cavity surface emitting laser projector 垂直腔面发射激光投影仪用可回流液晶几何相位元件

Journal of optical microsystems Pub Date : 2023-10-11 DOI: 10.1117/1.jom.3.4.041207

Ming-Syuan Chen, Hung-Shan Chen, Sung-Nan Chen, Chien-Chung Chen, Yi Hung, Guo-Lin Hu, Chia-Ming Chang

引用次数: 0

Impact of magnetic nanoparticles on the stability of blue phase and twist-grain boundary A phases 磁性纳米颗粒对蓝相和扭转晶界A相稳定性的影响

Journal of optical microsystems Pub Date : 2023-10-10 DOI: 10.1117/1.jom.3.4.041206

Apparao Gudimalla, Marta Lavrič, Brigita Rožič, Saso Gyergyek, Samo Kralj, Zdravko Kutnjak

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Front-lit LCOS for AR displays 用于AR显示器的前置LCOS

Journal of optical microsystems Pub Date : 2023-09-30 DOI: 10.1117/1.jom.3.4.041205

Yuet-Wing Li, Kuan-Yu Chen, Wen-Hsu Chen, Chi-Wen Lin, Chien-Tang Wang, Kuan-Hsu Fan-Chiang, Hung-Chien Kuo, Hsien-Chang Tsai

{"title":"Front-lit LCOS for AR displays","authors":"Yuet-Wing Li, Kuan-Yu Chen, Wen-Hsu Chen, Chi-Wen Lin, Chien-Tang Wang, Kuan-Hsu Fan-Chiang, Hung-Chien Kuo, Hsien-Chang Tsai","doi":"10.1117/1.jom.3.4.041205","DOIUrl":"https://doi.org/10.1117/1.jom.3.4.041205","url":null,"abstract":"Augmented reality (AR) displays are recognized as an important human–machine interface for next-generation computing platforms. They consist of a micro projector and a waveguide combiner. Researchers are looking for a compact and powerful projector to power up the waveguide combiner. The projector itself is comprised of microdisplays [liquid-crystal-on silicon (LCOS), MicroLED, laser beam scanning, and organic light-emitting diode] that generate the virtual image and a collimating optics module that collimates the image toward the waveguide’s entrance aperture. However, the microdisplays mentioned above suffer from different problems, such as being too bulky, having too low brightness, reliabilities issue, or too high power consumption. In particular, projectors using LCOS are too bulky and heavy to fit into an AR glasses form factor. Therefore, we proposed a new illumination system called front-lit for LCOS. In the front-lit system, the conventional polarization beam splitter (PBS) in the LCOS projector is replaced by a polarized waveguide plate with a micro mirror array. The polarized waveguide functions like a PBS. It reflects the s-polarized beam and transmits to the p-polarized beam. Moreover, the polarized waveguide input beam is shaped to a profile with two intensity peaks from a Lambertian profile by our coupling lens, which is located between the LED and waveguide. Having this profile, the polarized waveguide efficiency is improved, and a larger display illumination area is obtained. From our real measurement results, it is proven that the front-lit LCOS significantly reduces the size and weight of the illumination system. It weighs less than 1 g, and the size of the full module is as small as 0.47cc. The color filter front-lit LCOS and color sequential LCOS deliver 30,000 nits / 175 mW and 100,000 nits / 300 mW, respectively. The color sequential front-lit LCOS also provides high image quality with a 500:1 contrast ratio and 140% sRGB color gamut.","PeriodicalId":485779,"journal":{"name":"Journal of optical microsystems","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136341961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enabling mass manufacturing of industry-standard optical waveguide combiners 实现工业标准光波导合成器的大规模生产

Journal of optical microsystems Pub Date : 2023-09-23 DOI: 10.1117/1.jom.3.3.033502

Stefan Steiner, Matthias Jotz, Frederik Bachhuber, Brian Bilenberg, Tobias Hedegaard Bro, Alireza Rashed, Murat Deveci, Erhan Ercan, Mariana Ballottin, Jan Matthijs ter Meulen

{"title":"Enabling mass manufacturing of industry-standard optical waveguide combiners","authors":"Stefan Steiner, Matthias Jotz, Frederik Bachhuber, Brian Bilenberg, Tobias Hedegaard Bro, Alireza Rashed, Murat Deveci, Erhan Ercan, Mariana Ballottin, Jan Matthijs ter Meulen","doi":"10.1117/1.jom.3.3.033502","DOIUrl":"https://doi.org/10.1117/1.jom.3.3.033502","url":null,"abstract":"Nanoimprinting of surface-relief grating-based waveguides has the potential to produce one of the industry-leading augmented reality (AR) smart glasses, but there are still many challenges in the design, scaling, and reproducibility of these imprinted waveguides. A promising path toward mass manufacturing of optical waveguide combiners is via large-area nanoimprinting. Here, we present the complete value chain with partners involved throughout the process: from design, mastering, and materials to imprinting and metrology, to prove that this method improves not only the manufacturing throughput but also the waveguide quality. We demonstrate that the replication and image quality are true to the intended design using large area, high refractive index (n = 1.9), square (300 mm × 300 mm) glass substrates with high-refractive index resins (n = 1.9). This is shown to be valid for over 100 replications and for large area nanoimprinting (Gen5, 1100 mm × 1300 mm). Our goal is to demonstrate a viable path toward high-volume and low-cost manufacturing of AR waveguides based on surface relief gratings.","PeriodicalId":485779,"journal":{"name":"Journal of optical microsystems","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135958961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Orientation fluctuation in liquid crystal lenses 液晶透镜的取向波动

Journal of optical microsystems Pub Date : 2023-09-20 DOI: 10.1117/1.jom.3.4.041204

Yi-Hsin Lin, Wei-Cheng Cheng, Hung-Shan Chen, Yu-Jen Wang, Xiao Liang

引用次数: 0

Liquid crystal-enabled tunability of Yagi-Uda antenna resonant properties 液晶使能Yagi-Uda天线谐振特性的可调性

Journal of optical microsystems Pub Date : 2023-09-19 DOI: 10.1117/1.jom.3.4.041203

Ivan Yakovkin, Victor Reshetnyak

引用次数: 0

2022 List of Reviewers 2022年评审人员名单

Journal of optical microsystems Pub Date : 2023-01-12 DOI: 10.1117/1.jom.3.1.010102

引用次数: 0