Optical device as a driving aid
First Claim
Patent Images
1. An optical device intended as a driving aid for a motor vehicle, comprising:
- at least one generator disposed in a vehicle headlamp and operable to generate a laser beam in a pre-determined direction having a wavelength and an energy or power compatible with ocular safety;
said laser beam output through a first optical system;
at least one discharge lamp of the kind comprising a rare gas, said discharge lamp capable of pumping said generator and acting as a non-laser illumination source for said vehicle headlamp;
at least a portion of light flux generated by the discharge lamp output through a second optical system;
a sample of an optical material doped with erbium or with at least one dopant intended to provide the sample of optical material with qualities of stimulated light emission;
a third optical system for concentrating at least part of the light flux generated by the discharge lamp on the sample of optical material to pump said generator; and
a laser beam receiver.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to an optical device used as a driving aid. According to the invention, a lidar is formed by a sample of glass doped with erbium and pumped by a fraction of the light flux generated by a xenon discharge lamp with a concentrator. The unit is disposed in a headlamp or other light, optionally making use of their lighting means, and enables a receiver and circuitry generating navigational aid parameters to be activated.
26 Citations
12 Claims
-
1. An optical device intended as a driving aid for a motor vehicle, comprising:
-
at least one generator disposed in a vehicle headlamp and operable to generate a laser beam in a pre-determined direction having a wavelength and an energy or power compatible with ocular safety; said laser beam output through a first optical system; at least one discharge lamp of the kind comprising a rare gas, said discharge lamp capable of pumping said generator and acting as a non-laser illumination source for said vehicle headlamp; at least a portion of light flux generated by the discharge lamp output through a second optical system; a sample of an optical material doped with erbium or with at least one dopant intended to provide the sample of optical material with qualities of stimulated light emission; a third optical system for concentrating at least part of the light flux generated by the discharge lamp on the sample of optical material to pump said generator; and a laser beam receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification