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design and fabrication of microlens by microfluidic deposition method

Design and fabrication of microlens by microfluidic depositi...

引用

conference on current developments in Lens design and optical engineering V

作者： Chen, CT Chiu, CL Horng, JB Ind Technol Res Inst Optoelect & Syst Labs Hsinchu 741 Taiwan

ISBN: (纸本)0819454613

The paper presents a new processing method for design and fabrication of microlens by microfluidic deposition, in which the lenses can be formed on the media with high precise location in the fabrication process. First we may apply physical vaporization deposition (PVD) or spin coating to fabricate a thin film;secondly, the hydrophilic pattern specified by the mask of lenses can be created by photolithography, where the special lens media is made herein. Finally, the liquid solution of lens material is deposited onto the predetermined location of the lens media by the drop-on-demand fluidic actuator;thus, the microlenses are consequently formed after the complete evaporation of solvent in the solution.

关键词： microlens fabrication microfluidic deposition ink-jet

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design of an expander lens for an MWIR zoom camera using the third-order aberration analysis 23

Design of an expander lens for an MWIR zoom camera using the...

引用

conference on current developments in Lens design and optical engineering XXIII Part of SPIE Optics and Photonics conference

作者： Yun, Min-Seok Ryu, Tae-Sik Park, Sung-Chan Dankook Univ Dept Phys 119 Dandae Ro Cheonan Si 31116 Chungcheongnam South Korea

ISBN: (纸本)9781510654198;9781510654181

This study presents the methods for designing an expander lens for an MWIR zoom lens through the third-order aberration analysis and evaluating the optical zoom system. This expander lens is used to enlarge the focal lengths of an original main zoom lens two times, which unfortunately doubles the aperture size of the expander lens elements. Thus, this extended apertures significantly generate the aberrations of a zoom system. To solve the problem, an expander lens has been designed using the third-order aberration analysis numerically. Since an MWIR optical system uses a cooled detector, this zoom system should be designed to eliminate the narcissus effect. Using this design approach, we efficiently obtain an expander lens for an MWIR zoom system satisfying the current requirements.

关键词： Zoom lenses Monochromatic aberrations optical spheres Mid-IR Chemical elements Lens design Transparent conductors Modulation transfer functions Spherical lenses Infrared radiation

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Iterative and inverse design of a segmented reflector for uniform illumination on the road 22

Iterative and inverse design of a segmented reflector for un...

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conference on current developments in Lens design and optical engineering XXII

作者： Wu, Rubing Alisafaee, Hossein Rose Hulman Inst Technol Dept Phys & Opt Engn 5500 Wabash Ave Terre Haute IN 47803 USA

ISBN: (数字)9781510644670

ISBN: (纸本)9781510644670

We demonstrate an iterative and inverse design of a segmented reflector used to illuminate the road with a uniform light distribution and reduced glare to the oncoming traffic. design is set to meet the StVZO standard. The maximum brightness obtained is 1460 candela, which is five times brighter than a conventional headlamp of urban shared electric scooters and bicycles, resulting in improved visibility in dark environments. A prototype was built and tested at various environments. The tolerance analysis showed no negative influence on the desired standard light distribution. In addition to this iterative approach, a ray tracing code has been developed for inverse design and to map a desired uniform road illumination pattern back to the candela sensor for corresponding reflector design.

关键词： optical design Illumination Reflector design design for manufacturing Lucid-Shape

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Proceedings of SPIE: current developments in Lens design and optical engineering III

Proceedings of SPIE: Current Developments in Lens Design and...

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current developments in Lens design and optical engineering III

This Volume 4767 of the conference proceedings contains 19 papers. Topics discussed include optical system, optical sensors, optical materials, optical design and optical devices.

关键词： optical engineering

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design study of a 2.2x zoom lens using plastic materials

Design study of a 2.2x zoom lens using plastic materials

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conference on current developments in Lens design and optical Systems engineering

作者： Shi, WM Newell, MP Fischer, RE OPT 1 Inc Westlake Village CA 91362 USA

No abstract available.

ISBN: (纸本)0819437387

No abstract available.

关键词： Zoom lenses Distortion Glasses Aspheric lenses Lens design Vignetting Chemical elements Cameras Plastic lenses Chromatic aberrations

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optical schemes for compact space objectives 18

Optical schemes for compact space objectives

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conference on current developments in Lens design and optical engineering XviiI

作者： Butylkina, K. D. Romanova, G. E. Bakholdin, A., V ITMO Univ 49 Kronverksky Pr St Petersburg 197101 Russia

ISBN: (纸本)9781510612082;9781510612075

The most widely used objectives for the space optics are mirror and catadioptric systems. We have considered several scheme types including the three-mirror schemes both of the Korsch-type and the systems without an intermediate image and compare them from the point of view of packaging conditions, image quality and achievable characteristics. The two-mirror systems with lens correctors are also analyzed. The optical layout and parameters of several variants are presented and the image quality is shown.

关键词： three-mirror systems Korsch scheme lens correctors optical systems design

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optical design of Low Glare Luminaire Applied for Tunnel Light 15

Optical Design of Low Glare Luminaire Applied for Tunnel Lig...

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conference on current developments in Lens design and optical engineering XV

作者： Tsai, M. S. Lee, X. H. Lo, Y. C. Sun, C. C. Natl Cent Univ Dept Opt & Photon Chungli 320 Taiwan

ISBN: (纸本)9781628412192

In this study, a low glare and high-efficient tunnel lighting design which consists of a cluster light-emitting diode and a free-form lens is presented. Most of the energy emitted from the proposed luminaire is transmitted onto the surface of the road in front of drivers, and the probability that the energy is emitted directly into drivers' eyes is low. Compared with traditional fluorescent lamps, the proposed luminaire, of which the optical utilization factor, optical efficiency, and uniformity are, respectively, 44%, 92.5%, and 0.72, performs favorably in traffic safety, energy saving, and glare reduction.

关键词： Light-emitting diodes Illumination design Nonimaging optics optical design and fabrication

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optical design of LED Marine Beacons 19

Optical Design of LED Marine Beacons

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19th conference on current developments in Lens design and optical engineering

作者： Lin, Shih-Kang Jen, Yung-Chang Lee, Xuan-Hao Yu, Yeh-Wei Yang, Tsung-Hsun Sun, Ching-Cherng Natl Cent Univ Dept Opt & Photon Chungli 32001 Taiwan Natl Cent Univ Opt Sci Ctr Taoyuan 32001 Taiwan

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

Two optical designs for marine beacon based on Direct In-line Package (DIP) LED is proposed and demonstrated. The luminous intensity of the marine beacon using DIP LED can achieve to the IALA recommendation's requirement of 5 nautical miles. The measurement of color coordinates can also fit the IALA recommendation's requirement. By the surface-structured TIR lens, we successfully keep the divergence angle to 68 degrees in the horizontal direction and converge to 8 degrees in the vertical direction.

关键词： DIP LED optical design marine beacons IALA

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design constraints of high-bit-rate soliton communication systems

Design constraints of high-bit-rate soliton communication sy...

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8th conference on current developments in optical design and optical engineering

作者： Ferreira, MFS Univ Aveiro Dept Phys P-3800 Aveiro Portugal

ISBN: (纸本)0819432652

We have examined the main constraints on the design of single-channel, high-capacity soliton communication systems. Ln the average soliton regime, the Gordon-Haus timing jitter limits the bit rate to less than 7 Gb/s for transoceanic fiber links, while for shorter transmission distances the main limitation is fiber perturbations arising from discrete in-line amplification. The use of dispersion-decreasing fibers and of periodic optical, phase conjugation for jitter control can increase significantly the capacity of soliton communication systems. We found that the third-order dispersion assumes a prominent role in this case. Reducing this effect sufficiently, the main constraint becomes the soliton-soliton interactions and bit rates superior to 110 Gb/s can be achieved for amplifier spacings less than 80 km. For higher amplifier spacings the bit rate is limited by the Raman induced timing jitter.

关键词： optical solitons optical communication systems nonlinear fiber optics

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NEW-TYPE PSEUDORANDOM POSITION optical ENCODER WITH SUBMICROMETER RESOLUTION - design AND CHARACTERIZATION 4

NEW-TYPE PSEUDORANDOM POSITION OPTICAL ENCODER WITH SUBMICRO...

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conference on current developments in optical design and optical engineering IV

作者： DURANA, M MILES, R ROBERT, P SWISS FED INST TECHNOL INST METROLDEPT ELECT ENGNCH-1015 LAUSANNESWITZERLAND

ISBN: (纸本)0819415871

The characteristics of a new twin-track absolute position optical encoder are presented. One track containing a pseudorandom code and the second a periodic pattern are synchronously engraved on a glass slab. The optical reading head design composed of a LED, a gradient index lens and a linear CCD array, with simple intensity-based signal processing to read the code pattern is described in detail. This design is combined with a standard Moire method to enhance resolution. Performance enhancement of the optical reading head is studied in terms of track illumination versus code density, detector geometry versus the lens point-spread function (Airy disk);and reduction of extrinsic spatial noise by the application of thick films. Each parameter was considered in terms of the optimal field of view and depth of field of the system. © 1994 SPIE. All rights reserved.

关键词： ABSOLUTE POSITION ENCODERS PSEUDORANDOM CODES optical MEASUREMENTS INSTRUMENTATION

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