Type 1: 1.0 ... 4.86 LP/mm / 16 groups · Type 1-83: 0.5 ... 5.0 LP/mm / 16 groups · Type 2: 0.25 … 3.33 LP/mm / 16 groups · Type 4A: 0.5 ... 8.0 LP/mm / 2x 9 ...

Signal lamp for a motor vehicle with a complex reflector design is presented. The reflector is composed of set of rectangular bicubic Bezier ‘pillows’ creating desired horizontal and/or vertical light spread. Cover lens with no or weakly-spreading optics is assumed. Mathematical background is discussed in part 2 - parametric equations for individual pillow are presented, equations for control points ensuring proper optical function of the pillow are derived and parameter controlling intensity distribution of output beam is introduced. Option to prevent beam asymmetry of conventional signal lamps with big rake angles of cover lens using ‘semicomplex’ optical system (i.e. complex reflector combined with optical elements on the cover lens) is discussed, too.

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Optical microscopes use a combination of objective and ocular lenses (eyepieces) for imaging. The observation magnification is the product of the magnifications ...

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Avantes Fibre Optic Spectrometers for Optical Spectroscopy ; Avantes Direct-Attach Cuvette Holder with Attenuator & Filter Holder. Spectrometer Accessories ...

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by SG Demos · 1997 · Cited by 549 — In conclusion, it has been shown that optical polarization imaging can be used to obtain images at the surface and at different depths. The surface of the ...

Long Wave's official website is www.longwaveinc.com What is Long Wave's Revenue? Long Wave's revenue is $20.3 Million What is Long Wave's SIC code?

We present the realization of a high-precision, 0.5 m aperture size Cassegrain collimator system. The optical design, the optomechanical design, the mirror manufacturing, and the telescope alignment with a performance evaluation are extensively discussed. The optical design of the collimator is based on the Cassegrain telescope design with two aspheric mirrors. An athermalized, high stability optomechanical structure is conceived for the collimator to meet stringent performance requirements. The high-quality mirrors are made of low-expansion Zerodur glass–ceramic and the primary mirror is light-weighted to 63% of its initial weight. The design of a dedicated five-axis flexure mechanism driven by nanopositioner stages to compensate the secondary mirror misalignments is given. Primary and secondary mirrors with aspheric surfaces are manufactured, and their forms are measured by computer-generated holograms with a phase-shifting Fizeau interferometer. The alignment strategy is based on minimizing Fringe Zernike coefficients of wavefront decomposition measured by an autocollimation test setup. The alignment sensitivity and corresponding Fringe Zernike coefficient terms are determined by the ray-tracing software that introduces the intentional misalignments of the secondary mirror. The on-axis alignment of the collimator is performed with the guidance of sensitivity analysis results. The final root-mean-square wavefront error for the collimated beam is measured to be ${0.021}\;\lambda$.

Woojin Park, Soojong Pak, Geon Hee Kim, Sunwoo Lee, Seunghyuk Chang, Sanghyuk Kim, Byeongjoon Jeong, Trenton James Brendel, and Dae Wook Kim Appl. Opt. 59(18) 5581-5588 (2020)

The infrared illuminator provides covert or semi-covert lighting for medium-range indoor and outdoor surveillance applications. IR illumination dramatically ...

Focus means whether something is sharp or not. Something is in focus if it is acceptably sharp. · Depth of field is a measure of how much of the ...

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In fact, the 532nm green lasers are 7X to 10X brighter than any other beam colors at the same output power. Green pointers are excellent for pointing out ...

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Steven C. West, Samuel H. Bailey, James H. Burge, Brian Cuerden, Jeff Hagen, Hubert M. Martin, and Michael T. Tuell Appl. Opt. 49(18) 3522-3537 (2010)

Barrel distortion is one of the most common lens distortions in photography, and it generally happens when you use a wide-angle lens (or the wide portion of a ...

We present the realization of a high-precision, 0.5 m aperture size Cassegrain collimator system. The optical design, the optomechanical design, the mirror manufacturing, and the telescope alignment with a performance evaluation are extensively discussed. The optical design of the collimator is based on the Cassegrain telescope design with two aspheric mirrors. An athermalized, high stability optomechanical structure is conceived for the collimator to meet stringent performance requirements. The high-quality mirrors are made of low-expansion Zerodur glass–ceramic and the primary mirror is light-weighted to 63% of its initial weight. The design of a dedicated five-axis flexure mechanism driven by nanopositioner stages to compensate the secondary mirror misalignments is given. Primary and secondary mirrors with aspheric surfaces are manufactured, and their forms are measured by computer-generated holograms with a phase-shifting Fizeau interferometer. The alignment strategy is based on minimizing Fringe Zernike coefficients of wavefront decomposition measured by an autocollimation test setup. The alignment sensitivity and corresponding Fringe Zernike coefficient terms are determined by the ray-tracing software that introduces the intentional misalignments of the secondary mirror. The on-axis alignment of the collimator is performed with the guidance of sensitivity analysis results. The final root-mean-square wavefront error for the collimated beam is measured to be ${0.021}\;\lambda$.

Özgür Karcı, Meltem Yeşiltepe, Eray Arpa, Yuchen Wu, Mustafa Ekinci, and Jannick P. Rolland Opt. Express 30(7) 11150-11164 (2022)

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