# US 5,353,210 A · Reflector lamp with low UV emission

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- Number: US 5,353,210 A
- Document ID: US5353210A
- Status: Granted
- Kind: A
- Application number: 07/936,157
- Filed: 1992-08-27
- Granted: 1994-10-04
- Earliest claimed: 1989-10-10
- Assignees: General Electric Company
- Inventors: Jack M. Strok; Thomas G. Parham; Curtis E. Scott
- Web page: https://patentgrep.com/patent/US5353210A

## CPC

- F21V 9/06: for filtering out ultraviolet radiation
- F21S 41/37: characterised by their material, surface treatment or coatings
- F21V 7/24: characterised by the material
- F21V 7/28: characterised by coatings
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS

## Abstract

Reflector lamps having vitreous, light transmissive reflectors and containing a source of visible and UV light radiation produce little or no UV radiation in the projected light beam by having a light reflecting coating on the exterior surface of the reflector and the reflector made of UV absorbing glass or having a UV absorbing coating disposed between the light reflecting coating and the exterior reflector surface. An anti-reflecting coating disposed on the interior, light-receiving surface of the reflector reduces UV emission still further.

## Claims

### Claim 1

A reflector lamp comprising a vitreous, light-transmissive reflector having a visible light-reflecting coating on its exterior surface and containing a source of visible and UV light radiation within, wherein said emitted UV radiation is absorbed by (i) said reflector, (ii) said light-reflecting coating, (iii) a UV absorbing coating disposed between said light-reflecting coating and said exterior reflector surface, or combination thereof.

### Claim 2 (depends on 1)

A lamp of claim 1 further having an anti-reflection coating on the interior, light-receiving surface of said reflector.

### Claim 3 (depends on 1)

A lamp of claim 1 wherein said light-reflecting coating transmits infrared radiation.