INTEGRATED FILTER AND GRATING IN AN AIMING SIGHT

摘要

A holographic sight is provided having a housing that includes a plurality of holograph sight components. A laser diode mounted in the housing is configured to emit a laser light beam. The light beam is transmitted to an integrated diffraction grating and filter unit which includes a grating and a filter in a single device. The diffraction grating has a grating surface for diffracting the light beam and also diffracting unwanted ambient light transmitted into the housing. The filter is an optical filter contacting at least a portion of the grating. The optical filter is adapted to absorb at least one wavelength of the ambient light to inhibit the ambient light from diffracting into a visible spectrum that might otherwise be viewable to a user looking into the holographic sight.

主权项

1. A holographic weapons sight comprising:
a reticle image hologram; and an integrated grating and filter device containing:
a base substrate,a transparent substrate spaced from the base substrate,a first epoxy between the substrates and contacting the base substrate, wherein the first epoxy includes an outer surface having a series of surface features molded thereon,a reflective coating contacting the outer surface of the first epoxy and configured to diffract light toward the hologram, anda dyed epoxy between the reflective coating and the transparent substrate, wherein the dyed epoxy is adapted to inhibit at least a portion of the light from reflecting to the hologram.