Patent US5436808A successfully refreshed from Google Patents.
US5436808A
Expired / Lapsed
US
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Headlamp
Assignee: Transducer Valley Inc
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Filing: 1992-02-29
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Granted: 1995-07-25
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Expires: 2012-02-29
Abstract
Abstract A headlamp, particularly for vehicles. The headlamp includes a solid piece body formed from a transparent material. The body includes a first, light transmitting surface portion. At least a first and a second opaque mirror surface are disposed on opposite sides of a second surface portion of the body. The first mirror surface is shaped to produce a desired distribution of reflected light on the second mirror surface; the second mirror surface is shaped to produce a desired reflected light distribution in an area illuminated by the headlamp. Light from at least one light source is directed to the first mirror surface, reflected by the first mirror surface to the second mirror surface, and then reflected by the second mirror surface through the light transmitting surface.
Inventors
- 👤 Seppo Noponen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:55
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; F; F21; F21S; F21S41/00; F21S41/20; F21S41/24
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
131 words
A headlamp, particularly for vehicles, comprising: a solid piece body formed from a transparent material, the body including a first, light transmitting surface portion; at least a first and a second opaque mirror surface disposed on opposite sides of a second surface portion of the body, the first mirror surface being shaped to produce a desired distribution of reflected light on the second mirror surface, the second mirror surface being shaped to produce a desired reflected light distribution in an area illuminated by the headlamp; and at least one light source, wherein light from the at least one light source is directed to the first mirror surface, reflected by the first mirror surface to the second mirror surface, and then reflected by the second mirror surface through the light transmitting surface.
Claim 2
Dependent Claim
131 words
A headlamp, particularly for vehicles, comprising: a solid piece body formed from a transparent material, the body including a first, light transmitting surface portion; at least a first and a second opaque mirror surface disposed on opposite sides of a second surface portion of the body, the first mirror surface being shaped to produce a desired distribution of reflected light on the second mirror surface, the second mirror surface being shaped to produce a desired reflected light distribution in an area illuminated by the headlamp; and at least one light source, wherein light from the at least one light source is directed to the first mirror surface, reflected by the first mirror surface to the second mirror surface, and then reflected by the second mirror surface through the light transmitting surface.
Claim 3
Dependent Claim
14 words
A headlamp according to claim 1, wherein: the body is optical glass or plastic.
Claim 4
Dependent Claim
13 words
A headlamp according to claim 1, wherein: the body is formed by molding.
Claim 5
Dependent Claim
20 words
A headlamp according to claim 1, wherein: the mirror surfaces are made from a layer of a light reflective material.
Claim 6
Dependent Claim
20 words
A headlamp according to claim 4, wherein: the mirror surfaces are formed by evaporative deposition of the light reflective material.
Claim 7
Dependent Claim
15 words
A headlamp according to claim 5, wherein: the light reflective material is silver or aluminum.
Claim 8
Dependent Claim
19 words
A headlamp according to claim 4, further comprising: a layer of a protective material for protecting the mirror surfaces.
Claim 9
Dependent Claim
15 words
A headlamp according to claim 7, wherein: the protective layer is an impact resistant material.
Claim 10
Dependent Claim
13 words
A headlamp according to claim 8, wherein: the impact resistant material is plastic.
Claim 11
Dependent Claim
22 words
A headlamp according to claim 1, wherein: the at least one light source is arranged in a recess formed inside the body.
Claim 12
Dependent Claim
17 words
A headlamp according to claim 10, wherein: the at least one light source is a light bulb.
Claim 13
Dependent Claim
21 words
A headlamp according to claim 10, further comprising: a light source for dip lights and a light source for distance lights.
Claim 14
Dependent Claim
32 words
A headlamp according to claim 12, wherein: the at least one light source is a light bulb, the light bulb including a filament for distant lights and a filament for dip lights.
Claim 15
Dependent Claim
51 words
A headlamp according to claim 13, wherein: the opening in the hole reflector is arranged to direct light essentially to different parts of the mirror surfaces, thereby producing an essentially downwardly directed light cone when dip lights are used, and an essentially horizontally directed light cone when distant lights are used.
Claim 16
Dependent Claim
29 words
A headlamp according to claim 10, further comprising: a plurality of light sources, wherein at least one of the light sources is arranged to function as an attention light.
Claim 17
Dependent Claim
18 words
A headlamp according to claim 15, wherein: said attention light is a direction indicator or a hazard light.
Claim 18
Dependent Claim
47 words
A headlamp according to claim 9, further comprising: a hole reflector placed in association with the at least one light source, the hole reflector including at least one opening that is arranged to direct light produced by the at least one light source in a desired way.
Claim 19
Dependent Claim
33 words
A headlamp according to claim 17, wherein: the at least one light source is a light bulb and the light bulb includes a filament for distant lights and a filament for dip lights.
Claim 20
Dependent Claim
51 words
A headlamp according to claim 18, wherein: the opening in the hole reflector is arranged to direct light essentially to different parts of the mirror surfaces, thereby producing an essentially downwardly directed light cone when dip lights are used, and an essentially horizontally directed light cone when distant lights are used.
Claim 21
Dependent Claim
21 words
A headlamp according to claim 17, further comprising: a light source for dip lights and a light source for distance lights.
Claim 22
Dependent Claim
32 words
A headlamp according to claim 20, wherein: the at least one light source is a light bulb, the light bulb including a filament for distant lights and a filament for dip lights.
Claim 23
Dependent Claim
51 words
A headlamp according to claim 21, wherein: the opening in the hole reflector is arranged to direct light essentially to different parts of the mirror surfaces, thereby producing an essentially downwardly directed light cone when dip lights are used, and an essentially horizontally directed light cone when distant lights are used.
Claim 24
Dependent Claim
21 words
A headlamp according to claim 1, further comprising: a light source for dip lights and a light source for distance lights.
Claim 25
Dependent Claim
29 words
A headlamp according to claim 1, further comprising: a plurality of light sources, wherein at least one of the light sources is arranged to function as an attention light.
Claim 26
Dependent Claim
18 words
A headlamp according to claim 4, wherein: said attention light is a direction indicator or a hazard light.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-24 | 1999-01-23 | 1999-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-24 | 2003-01-23 | 2003-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-24 | 2007-01-23 | 2007-07-25 | $7700.00 | Window Closed / Lapsed |