Light guide with virtually cylindrical convex lens
US5363469A · kind A · utility
Inventor
Key dates
| Filing date | Aug 10, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Aug 10, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A light guide is comprised of a laser light source for providing a light beam along a central axis, an optical system for collimating and focusing the beam at infinity, a virtually cylindrical convex lens fixed in a position to intercept the focused beam wherein the angle between the centreline of the beam and the optical surface at its exit point from the lens is an oblique angle whereby the beam is spread radially toward a target, and thereby form a line of light on the target, and whereby the target surface can be located at various distances from the lens while the width of the beam impinging thereon is maintained along a straight line with constant width on a target surface at an angle to the plane thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.