Patent ID: 7675677
Filing Date: 2010-03-09
Classification: G02B

Abstract:
1. Binoculars exhibiting two monoculars, wherein a) each monocular has a casing; b) each casing comprises at least two holders in each of which at least one lens is inserted; c) at least one of the monoculars comprises a red-violet or blue-violet tinted optical element; d) the tinted optical element exhibits a first transmissivity range, which lies within the spectral region of chlorophyll fluorescence between about 650 nm and at least 800 nm, and at least one additional transmissivity band which lies within a shorter-wavelength region from about 310 nm to about 600 nm; e) the additional transmissivity band exhibits a short-wavelength sub-band within a wavelength range from about 360 nm to about 430 nm and a long-wavelength sub-band within a range from about 530 nm to about 550 nm and further wherein each of the sub-bands exhibit a half-value width of about 15 nm.