Optical ReviewPub Date : 2024-08-08DOI: 10.1007/s10043-024-00906-3
Yunxiao Chen, Fan Yang, Weiqiang Zhang, Ruihong Li, Dezhao Lin
{"title":"Designed edge-lit NIR planar marker for orthopedic surgical locators","authors":"Yunxiao Chen, Fan Yang, Weiqiang Zhang, Ruihong Li, Dezhao Lin","doi":"10.1007/s10043-024-00906-3","DOIUrl":"https://doi.org/10.1007/s10043-024-00906-3","url":null,"abstract":"<p>Orthopedic surgical robots utilize near-infrared (NIR) optical locators to enable precise navigation during operations. Markers are crucial in the locator system, capturing the positions and orientations of surgical instruments and patients during operation. While spherical markers can be easily detected, they are less robust owing to limited feature points. In contrast, planar markers offer more feature points and greater resistance to occlusion. However, the demanding nature of orthopedic surgeries necessitates specific requirements for NIR-based planar markers, such as size, illumination, weight, and heat dissipation. To address these challenges, we designed an edge-lit NIR calibration board (300 mm × 300 mm) to calibrate the constructed NIR camera, with its effectiveness validated through extensive experimental studies. Based on the fundamental design data obtained from the designed edge-lit NIR calibration board, and considering the luminous flux density and the available 12 V battery on the market, we proposed an edge-lit active NIR planar marker with dimensions of 70 mm × 60 mm and equipped with eight LEDs (1.5 V, 0.085 W each). The experiential data illustrates the max relative standard deviation are around 0.93% and 0.78% for the measurement precision subjected to 10 mm × 10 mm square (5 × 5 squares) with 16 and 36 feature points, respectively. Further, we validated the following from the experimental results: (1) A 12 V 1000 mAh alkaline battery has an autonomy of approximately 16 h for the eight NIR LEDs. (2) The total heat energy conversion of 0.408 W for the marker is within acceptable limits for use in an operation room. (3) The total weight of approximately 21.6 g, including the planar marker and the selected battery, is manageable. Therefore, the designed edge-lit active NIR planar marker presents a viable option for integration into the locator system of orthopedic surgical robots.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"56 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141904437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-08-05DOI: 10.1007/s10043-024-00903-6
Thien An Nguyen, Jaejin Lee
{"title":"Parallel detection structure exploiting the extrinsic information from the serial detection in the holographic data storage system","authors":"Thien An Nguyen, Jaejin Lee","doi":"10.1007/s10043-024-00903-6","DOIUrl":"https://doi.org/10.1007/s10043-024-00903-6","url":null,"abstract":"<p>The major concern in signal processing for holographic data storage (HDS) systems is the two-dimensional (2D) inter-symbol interference (ISI), which arises from neighboring pixels in every direction on the data page of HDS systems. Recently, serial–parallel detection has been proposed for bit-patterned media recording (BPMR). We have realized that the serial–parallel detection structure is more suitable for HDS systems than BPMR systems, because, unlike BPMR systems, the interferences in HDS systems from horizontal and vertical directions are equal. Therefore, the serial–parallel structure for HDS systems can extract better bit-error-rate performance.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"16 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-08-05DOI: 10.1007/s10043-024-00900-9
Masaki Tamura, Naruki Kurokawa, Atsushi Hotta
{"title":"Application of low-birefringence polystyrene in high-resolution imaging-lens systems","authors":"Masaki Tamura, Naruki Kurokawa, Atsushi Hotta","doi":"10.1007/s10043-024-00900-9","DOIUrl":"https://doi.org/10.1007/s10043-024-00900-9","url":null,"abstract":"<p>Polystyrene (PS) has not been much used as an optical material due to the considerably high birefringence of PS. For the extensive use of PS in the imaging-lens systems, lower birefringence should be attained for the enhancement of the resolution. Previously, we have developed PS with extremely low birefringence (LB-PS) even when the molecular chain orientation of PS occurred. It indicates that PS may now become an effective material with excellent properties for optical lenses. In this paper, we compared the birefringence of our developed LB-PS with ones of commercial optical polymers that are most commonly utilized in imaging-lens systems. It was confirmed that the birefringence of LB-PS was comparable or even better than that of the commercial ones with high resolution. By designing an imaging-lens system, it was also confirmed that employing PS with the Abbe number of 31.5 could be highly effective in compensating for chromatic aberration as well as obtaining high optical resolution. Moreover, the resolution performance of several lens systems was calculated, analyzed, and compared by considering the birefringence of cyclo-olefin polymer (COP), normal PS, and LB-PS. It was found that LB-PS could maintain high resolution, while normal PS with high birefringence exhibited significant decrease in resolution. It was also found that LB-PS generated higher resolution than COP. All these results revealed that LB-PS could be an excellent optical material to compensate for the chromatic aberration of lens systems, leading to the enhancement of the actual resolution performance. It was, therefore, expected that LB-PS could contribute to improving the resolution performance of smartphone cameras and security cameras.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"16 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-08-05DOI: 10.1007/s10043-024-00901-8
JunJie Sun
{"title":"Design of long focal length terahertz optical system","authors":"JunJie Sun","doi":"10.1007/s10043-024-00901-8","DOIUrl":"https://doi.org/10.1007/s10043-024-00901-8","url":null,"abstract":"<p>Terahertz imaging has significant development prospects in terahertz technology due to its strong penetration and high spatial resolution. Currently, optical system designs are generally limited to the visible light range. To design an optical system suitable for terahertz imaging, an analysis of optical materials and system structures has been conducted. TPX (4-methylpentene-1) material and inverse telephoto structure were selected as the design basis. A terahertz optical system with a full field angle of 50°, a relative aperture of 1/4 and a focal length of 100 mm is designed using ZEMAX. The optimization results show that the root mean square radius of the spot in each field of view is smaller than the airy disk radius, indicating good imaging quality of the system.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"3 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-08-05DOI: 10.1007/s10043-024-00894-4
Lóránt Tibor Csőke, Evangelos Skoulas, Zsolt Kollár
{"title":"Optical configurations for applying antireflective nanotexture on spherical lenses by ultrashort laser structuring","authors":"Lóránt Tibor Csőke, Evangelos Skoulas, Zsolt Kollár","doi":"10.1007/s10043-024-00894-4","DOIUrl":"https://doi.org/10.1007/s10043-024-00894-4","url":null,"abstract":"<p>This paper focuses on minimizing the optical reflection on spherical fused silica lenses using femtosecond (fs) laser nanostructuring. A unique type of nanopillar formation has been observed on <span>(textrm{SiO}_2)</span> surfaces possessing antireflective properties when irradiated with a specific number of overlapping pulses, polarization, and fluence levels. Maintaining precise control over these sensitive technological parameters such as defocus and incident angle during the processing of geometrically complex shapes presents a significant challenge. This study proposes a theoretical optical arrangement to address this limitation by the design of a custom scanner system optimized for curved surfaces. The paper details the optimization process of such a bent image space (inverse-hypercentric) optical system using Zemax OpticStudio. Although the practical realization of the arrangement has not been performed, simulations are conducted to prove the functionality of the concept. Furthermore, we propose a practical method for segmented structuring of spherical surfaces based on consecutive repositioning and irradiation using an industrial robotic arm. By constructing the optical model, the necessary resolution of the segmentation has been calculated for a typical F-Theta scanner system and experimental verification has been performed.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"27 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Miniature wide angle optical system with freeform lens","authors":"Changlun Hou, Ying Yu, Dongbiao Zhang, Xia Liu, Kangkang Jin, Zhen Shi, Jufeng Zhao, Guangmang Cui","doi":"10.1007/s10043-024-00902-7","DOIUrl":"https://doi.org/10.1007/s10043-024-00902-7","url":null,"abstract":"<p>Miniature camera modules are widely used in mobile electronic devices such as mobile phones, personal digital assistants or tablet computers. The introduction of freeform surface in imaging systems provides numerous opportunities for enhanced performance, compactness and lightweight packaging. In this paper, we proposed a wide-angle, low-distortion and large-aperture optical system with freeform lens. A 110°full field of view, 1/1.8″ sensor size, 1.8 F number, 6.35 mm total track length (TTL) wide-angle high-resolution miniature camera lens was developed. The prototype exhibits a novel solution for wide-angle, ultra-short TTL lens in the application such as mobile phone cameras, wearable imaging systems and endoscopic systems<b>.</b></p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"32 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141764071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-07-15DOI: 10.1007/s10043-024-00898-0
Faîçal Baklouti, Ichraf Chatti, Rabah Attia
{"title":"On the performance of a hybrid optical communication system: MGDM–FSO for challenging environments","authors":"Faîçal Baklouti, Ichraf Chatti, Rabah Attia","doi":"10.1007/s10043-024-00898-0","DOIUrl":"https://doi.org/10.1007/s10043-024-00898-0","url":null,"abstract":"<p>This paper presents a novel approach to optical communication systems by introducing a hybrid MGDM–FSO (Mode Group Diversity Multiplexing—Free Space Optical) system. The primary objective of this innovative system is to address the limitations of traditional communication systems, particularly in challenging environmental conditions. By combining the advantages of MGDM, which enhances transmission capacity in optical fibers, with the flexibility and high data rates offered by FSO technology, the hybrid MGDM–FSO system aims to overcome obstacles encountered during data transmission. In this study, we provide a detailed analysis of the proposed system's architecture and performance characteristics under various operating conditions. Specifically, we investigate both single-input single-output (SISO) and multiple-input multiple-output (MIMO) configurations of the MGDM–FSO system. Performance metrics such as received power levels, bit error rate (BER), and quality factor (Q-factor) are evaluated to assess the system's efficiency across different weather conditions. Numerical simulations are conducted to analyze the system's performance under a range of scenarios. Our findings indicate that under clear weather conditions, both SISO and MIMO configurations exhibit optimal performance, characterized by high Q-factor and low BER. However, as weather conditions deteriorate to heavy rain and heavy fog, the Q-factor of the received signal decreases, highlighting the impact of environmental factors on system performance. This study contributes valuable insights into the behavior of hybrid MGDM–FSO systems and emphasizes the importance of robust communication techniques to mitigate environmental challenges. The findings presented here have implications for the design and implementation of optical communication systems in real-world scenarios.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"143 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141618320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"2D photonic-crystal-type surface relief grating for light with an azimuth angle","authors":"Fu-Li Hsiao, Chien-Teng Lin, Yen-Tung Yang, Yi-Chia Huang, Li-Chuan Yu, Ying-Pin Tsai","doi":"10.1007/s10043-024-00892-6","DOIUrl":"https://doi.org/10.1007/s10043-024-00892-6","url":null,"abstract":"<p>With the development of virtual reality, the projection design of the head-mounted display (HMD) requires improvement as well. The surface relief grating (SRG) is one of the popular diffraction elements to achieve light guiding through the waveguide. Using the SRG as the coupler, incoming information light can be coupled into the waveguide by the 1-order diffraction. To increase possible design options for the HMD, SRG with complex geometry has been designed to fit more diffraction conditions. In this paper, a 2D SRG is proposed to form by periodically arranging slanted glass pillars on the surface of a glass waveguide, just like a photonic crystal. The structure can suppress all the other diffraction orders except the 0-order and the [1, 0] order. The best diffraction efficiency of the [1, 0] order can be obtained when the incident light is incident with not only an incident angle but also an azimuth angle. The geometric parameters of the pillars are investigated and optimized with the diffraction efficiency by the finite element method, and the relationship between the incident angles and the diffraction efficiency will also be discussed. The proposed structure has the potential in both the in-coupler and the out-coupler, respectively, for integrating light coming from different azimuth angles or for outputting light to different azimuth angles.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"41 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-07-12DOI: 10.1007/s10043-024-00899-z
Narumi Asato, Ryushi Fujimura
{"title":"Tunable plasmonic resonance by photothermal deformation in Ag-SiO2 semi-shell nanostructures and enlargement of the controllable spectral region by UV-curable resin","authors":"Narumi Asato, Ryushi Fujimura","doi":"10.1007/s10043-024-00899-z","DOIUrl":"https://doi.org/10.1007/s10043-024-00899-z","url":null,"abstract":"<p>The Ag semi-shell, a nanostructure comprising a dielectric nanosphere partially covered with Ag metal, can have its metallic shell deformed through a melting process under the illumination of plasmonic resonance. We have investigated the photothermal deformation process in Ag semi-shells and observed intensity-dependent melting deformation of the shell and a corresponding blueshift of the resonance peak. This indicates that the plasmonic resonance of the Ag semi-shells can be continuously controlled through laser irradiation. Furthermore, when the Ag semi-shells were coated with a UV-curable resin, the initial resonance peak wavelength was red-shifted, and the controllable spectral region was increased by a factor of two compared to that without the UV-curable resin. This large continuous control of the optical response through melting deformation of the shell has potential applications in optical memory, plasmonic color, and other areas.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"42 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical ReviewPub Date : 2024-07-12DOI: 10.1007/s10043-024-00896-2
Haruyuki Sano, Masashi Kuwahara
{"title":"Multiphysics simulation of optical gate switch operation using a chalcogenide phase-change material","authors":"Haruyuki Sano, Masashi Kuwahara","doi":"10.1007/s10043-024-00896-2","DOIUrl":"https://doi.org/10.1007/s10043-024-00896-2","url":null,"abstract":"<p>To gain a complete understanding of the optical switch that uses phase-change material, Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> (GST), we conducted a simulation considering various physical phenomena related to the switch, such as electrical conduction, Joule heating, heat diffusion, phase change of GST, and light propagation. It was found that the phase state (amorphous and crystalline) of the GST film can be controlled by applying an appropriate pulse voltage to the indium tin oxide (ITO) heater layer, thereby changing the transmittance of the optical switch. Calculations showed that during cooling in the amorphization process, part of the GST film was recrystallized, reducing the transmittance of the optical switch in the ON state. Moreover, the large temperature difference in the GST film during heating was caused by a substantial amount of Joule heat generated in the region distant from the GST film. This difference in distance from the heat-generating region resulted in a considerable temperature difference in the GST film. Thus, herein, we have proposed modified model structures to reduce this temperature difference in the GST film, which can recrystallize during the amorphization process. Calculation using the modified model structures revealed that increasing the thickness of the ITO heater layer, over which the GST film was not placed, can effectively reduce the temperature difference and eventually suppress recrystallization.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"37 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}