Optical glare limiter
First Claim
1. An optical glare limiter adapted to be powered by an electrical power source and to be used together with a reflecting surface to mitigate blinding glare caused by light from an external source impinging upon a field of vision of a person whose vision is to be protected from blinding glare, the optical glare limiter comprising a light source, a reflector and a prism each overlying a respective portion of the light source, and means for regulating intensity of light emanating from the glare limiter light source in dependence on intensity of the light from the external source, said regulating means comprising a light sensor, and wherein light emanating from the glare limiter light source is so directed as to strike the reflecting surface and then illuminate said field of vision of said person.
0 Assignments
0 Petitions
Accused Products
Abstract
An optical glare limiter uses an electrical power source, typically of a motor vehicle. It includes a light sensor component and a light source. The light from the glare limiter light source falling on a reflecting surface depends on the intensity of the light falling on the light sensor component from an external blinding source and can be regulated electronically so that the light in the driver'"'"'s field of vision has a contrast that is almost homogeneous and widespread with the effect of reducing the blinding effect.
29 Citations
15 Claims
- 1. An optical glare limiter adapted to be powered by an electrical power source and to be used together with a reflecting surface to mitigate blinding glare caused by light from an external source impinging upon a field of vision of a person whose vision is to be protected from blinding glare, the optical glare limiter comprising a light source, a reflector and a prism each overlying a respective portion of the light source, and means for regulating intensity of light emanating from the glare limiter light source in dependence on intensity of the light from the external source, said regulating means comprising a light sensor, and wherein light emanating from the glare limiter light source is so directed as to strike the reflecting surface and then illuminate said field of vision of said person.
Specification