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Episcopic projector
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Three element varifocal lens systems
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Fog penetrating viewing system
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Rapid focusing varifocal lens assembly
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Navigation and surveillance system
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Varifocal lens system and actuating mechanism
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Macro objective for single lens reflex camera with focal plane shutter
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Lens testing apparatus
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Compact varifocal lens system
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Apparatus for testing lenses and method
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Photographic projection device
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Long range varifocal optical systems
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Optical system for color television camera
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Optically compensated varifocal lens assembly
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Tracking device
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Varifocal lens system for cameras using leaf type shutters
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Control device for zoom lens systems
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Photographic camera and projection device
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Pancratic lens system relay
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Zoom projection lens
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