Invention Grant
US07675677B2 Binoculars 失效
望远镜

Binoculars
Abstract:
A pair of binoculars has lenses constituting optical filters with a transmissivity range within the wavelength range between about 650 nm and at least 800 nm and also with an additional transmissivity band within a wavelength range from about 310 nm to about 600 nm. The objects viewed with such a pair of binoculars appear as an image that is carried by a satin-finished metallic surface.
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