GIAI Photonics
Optical industry news, various optical talks from the latest industry fields, optical leading technologies, and the latest developments in optical research are all gathered here. Here you can learn about the latest industry updates, news, etc.
Peak transmission vs average transmission: peak transmission (Tpeak) is the single highest transmission value inside a filter's passband. Average transmission (Tavg) is the mean transmission…
Read articleCosmetic defects on optical components — scratches, digs, edge chips and coating blemishes — are inspected by cleaning the part, viewing each surface inside its…
Read articleIn an optical filter, FWHM (full width at half maximum) is the width of the passband, measured between the two wavelengths where transmission falls to…
Read articleShort answer: To choose an infrared optical material, start from the operating waveband and detector, then confirm low absorption at the real thickness and temperature.…
Read articleThin film interference works by splitting one light wave into two or more reflected waves, one from the top surface of a film and one…
Read articleGermanium (Ge) is used in infrared optics primarily to manufacture thermal imaging lenses, infrared windows, protective sensor optics, and components for infrared measurement systems. Its…
Read articleA machine vision filter manufacturer should do more than manufacture a filter around a nominal wavelength. The filter must be evaluated together with the illumination…
Read articleSurface flatness and wavefront error are related, but they are not interchangeable specifications. Surface flatness describes how much a nominally flat optical surface departs from…
Read articleA collimated N-BK7 plano-convex lens with f = 50 mm reaches the 0.07 λ RMS diffraction limit at f/6.4 (computed, 587.6 nm). Face the curved…
Read articleA beam expander is an afocal telescope that scales a collimated beam diameter by M. Far-field divergence scales by 1/M; the diameter-angle product stays fixed…
Read articleCube Beamsplitter vs Plate Beamsplitter: Which Design Is Better for Your Optical System? Neither a cube beamsplitter nor a plate beamsplitter is universally better. A…
Read articleA telecentric lens keeps image magnification essentially constant while the object moves along the optical axis, within a defined telecentric range. A conventional imaging lens…
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