Antiglare optical device
First Claim
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1. An antiglare optical device for human viewing of an object field containing an intense light source said device comprising:
- a) an objective means for focusing an image of said object field onto a focal plane,b) an eyepiece means for viewing said image focused onto said focal plane,c) a moderating photoactive layer means located at said focal plane for moderating light from said intense light source,wherein said light passing through said optical device defines an optical path, and further comprising a folding means for folding said optical path.
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Abstract
A device for viewing an object field containing intense light sources which could be disturbing or harmful to the human eye. Light from the object field is focused at a focal plane located within a layer of photochromic material. An intense light source produces an opaque mask in the photochromic layer. This mask matches the location and shape of the image of the intense light source at the image plane. An eyepiece permits a viewer to view the image plane to obtain an image of the object field with light from the intense light source dimmed by the opaque mask in the photochromic layer.
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Citations
23 Claims
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1. An antiglare optical device for human viewing of an object field containing an intense light source said device comprising:
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a) an objective means for focusing an image of said object field onto a focal plane, b) an eyepiece means for viewing said image focused onto said focal plane, c) a moderating photoactive layer means located at said focal plane for moderating light from said intense light source, wherein said light passing through said optical device defines an optical path, and further comprising a folding means for folding said optical path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A rearview mirror comprising:
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a) a objective means for focusing light, from an object field rearward of a vehicle, onto a focal plane, b) an eyepiece means for viewing said image at said focal plane, c) a photochromic layer means located at said focal plane for moderating intense light from said object field, wherein said light passing through said rearview mirror defines an optical path, and further comprising a folding means for folding said optical path.
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Specification