United States Patent [19] [ii] Patent Number: 4,646,215
Levin et al. [45] Date of Patent: Feb. 24,1987
[54] LAMP REFLECTOR
[75] Inventors: Robert E. Levin, S. Hamilton; George J. English, Reading, both of Mass.
[73] Assignee: GTE Products Corporation, Danvers, Mass.
[21] Appl. No.: 770,900
[22] Filed: Aug. 30, 1985
[51] Int. CI.4 F21M 3/18; F21V 7/08
[52] U.S. CI 362/296; 362/308
[58] Field of Search 362/296, 307, 310, 311,
362/308
[56] References Cited
U.S. PATENT DOCUMENTS
Re. 30,832 12/1981 La Giusa 362/307 X
1,882,647 10/1932 Kanolt 362/307
3,871,751 3/1975 Rarabauske et al 362/296 X
4,439,817 3/1984 Aton 362/307 X
4,451,873 5/1984 Tyler et al 362/296 X
4,481,563 11/1984 Snyder et al 362/296
FOREIGN PATENT DOCUMENTS
974743 10/1950 France 362/296
1350658 12/1963 France 362/296
2104530 6/1983 United Kingdom 362/296
2123134 1/1984 United Kingdom 362/296
Primary Examiner—Carlton R. Croyle
Assistant Examiner—Theodore W. Olds
Attorney, Agent, or Firm—Lawrence R. Fraley
[57] ABSTRACT
A lamp combination wherein the reflector's reflective surface is of a shape specifically designed to compensate for the refractive effects produced by the thickness of the glass walls of the light source's envelope structure located within (surrounded by) the reflector. Optimum light output is thus assured. A method of making such a lamp is also disclosed.
8 Claims, 9 Drawing Figures
