US5169224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge head lamp assembly
Assignee: Nissan Motor Co Ltd
•
Filing: 1991-07-11
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Granted: 1992-12-08
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Expires: 2011-07-11
Abstract
Abstract In a discharge head lamp assembly for a vehicle, a lamp housing has a front face which is formed therein with an opening. A discharge lamp is arranged within the lamp housing. An inner lens is also arranged within the lamp housing at a location in front of the discharge lamp for converging a light from the discharge lamp. An outer lens made of a resinous material converges the opening in the front face of the housing. The outer lens transmits therethrough the light from the inner lens to guide the light to the outside. A reflecting film is formed on a face of the inner lens adjacent to the discharge lamp for reflecting ultraviolet rays from the dishcharge lamp.
Inventors
- 👤 Toru Segoshi
- 👤 Takashi Ashida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:29
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/06; F21S; F21S41/00; F21S41/10; F21S41/14; F21S41/17
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A discharge head lamp assembly for a vehicle, comprising: a lamp housing having a front face formed therein with an opening; a discharge lamp arranged within said lamp housing; inner-lens means arranged within said lamp housing at a location in front of said discharge lamp for converging a light from said discharge lamp; outer-lens means made of a resinous material, said outer-lens means covering said opening in the front face of said lamp housing, said outer-lens means transmitting therethrough the light from said inner-lens means to guide the light to the outside; and reflecting-film means formed on a face of said inner lens means adjacent to said discharge lamp for reflecting ultraviolet rays from said discharge lamp, whereby discoloration and cracking of the outer lens means by ultraviolet rays are prevented.
Claim 2
Dependent Claim
131 words
A discharge head lamp assembly for a vehicle, comprising: a lamp housing having a front face formed therein with an opening; a discharge lamp arranged within said lamp housing; inner-lens means arranged within said lamp housing at a location in front of said discharge lamp for converging a light from said discharge lamp; outer-lens means made of a resinous material, said outer-lens means covering said opening in the front face of said lamp housing, said outer-lens means transmitting therethrough the light from said inner-lens means to guide the light to the outside; and reflecting-film means formed on a face of said inner lens means adjacent to said discharge lamp for reflecting ultraviolet rays from said discharge lamp, whereby discoloration and cracking of the outer lens means by ultraviolet rays are prevented.
Claim 3
Dependent Claim
17 words
A discharge head lamp assembly according to claim 1, wherein said reflecting-film means includes a metallic film.
Claim 4
Dependent Claim
17 words
A discharge head lamp assembly according to claim 1, wherein said reflecting-film means includes a multi-layer film.
Claim 5
Dependent Claim
17 words
A discharge head lamp assembly according to claim 1, wherein said reflecting-film means includes a single-layer film.
Claim 6
Dependent Claim
19 words
A discharge head lamp assembly according to claim 1, wherein said inner-lens means is made of a glass material.
References Cited (Backward Citations)
DE877297C
Cited
US3944320A
Cited
US4495549A
Cited
US4524410A
Cited
JPS61181054A
Cited
US4604680A
Cited
JPS6489802A
Cited
US4829407A
Cited
US4985816A
Cited
US5047903A
Cited
US5021930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-08 | 1996-06-08 | 1996-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-08 | 2000-06-08 | 2000-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-08 | 2004-06-08 | 2004-12-08 | $7700.00 | Window Closed / Lapsed |