Lens's centering error determining method, involves measuring displacement of energy center of gravity of image of blind on sensor during rotation of lens, and determining error of lens from value of displacement of centre of gravity
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Lens with a device for pivoting an optical assembly in the beam path of the lens
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Macro lens
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Projection objective with fixed focal length for digital projection
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Projection objective with fixed focal length formed of several subassemblies for digital projection
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Projection lens for digital cinema projection
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Method for homogenizing a horizontal characteristic for relative image-brightness e.g. for image sensor, requires filter with horizontal characteristic of attenuation of electromagnetic radiation transmission
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High open wide-angle cinema projection lens
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Projection lens for projection of digital image data
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High open projection lens
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Process for the surface coating of polymethyl methacrylate substrates
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Compact anamorphotic objective for digital projection of electronic images has afocal lens group infront of projection objective followed immediately by second lens group with at least one cylindrical lens
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Projection objective lens arrangement e.g. for movie-theater projection, has diaphragm arranged between second lens and third lens element
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Optical filter element for use in film projector; is made of heat-resistant glass-ceramics, absorbs ultraviolet light, reflects infrared light and is transparent to visible light
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Scanning objective lens with large imaging angle for laser printer, fax machine, or CD player; has aperture between positive and negative meniscal lens, with negative lens curved in aperture direction
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Anastigmatic anamorphotic projection objective for projection of cinemascope films uses compound objective lens with positive astigmatism and afocal auxiliary lens
