US3629570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic corrector for automotive headlamp beam orientation
Assignee: Automobiles Peugeot SA
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Filing: 1969-06-23
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Granted: 1971-12-21
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Expires: 1989-06-23
Abstract
Abstract Automatic device for varying the orientation of the light beam emitted by the headlamps of an automobile vehicle, said headlamps comprising each a light source and a reflector, wherein the light from said source is reflected by at least one pivotally mounted mirror of which the movements are controlled by means of a system responsive to the vehicle orientation.
Inventors
- 👤 Pierre Bouthors
- 👤 Francois Archaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:02
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; B60Q1/06; B60Q1/08; B60Q1/10; B60Q1/115; B60Q1/18; B60Q2300/00; B60Q2300/10; B60Q2300/13; B60Q2300/132
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
174 words
In a headlamp for an automotive vehicle, a device for automatically varying the orientation of the light beam emitted from a light source in said headlamp in accordance with the longitudinal trim of the vehicle, said device comprising a reflector system defining a path for said light beam and comprising at least one parabolic mirror, at least one partspherical mirror, and at least one elliptic mirror, means pivotally mounting said parabolic mirror for movement about a substantially horizontal axis extending transversely of said vehicle, said axis being coincident with the focus of said parabolic mirror, means fixedly mounting said elliptic mirror with one of its two foci coincident with the focus of said parabolic mirror and with its other focus coincident with the center of said part-spherical mirror and said light source, and control means responsive to the longitudinal trim of the vehicle operatively connected to pivotally move said parabolic mirror wherein the light from said source is reflected by said reflector system in a direction determined by the longitudinal trim of said vehicle.
Claim 2
Dependent Claim
174 words
In a headlamp for an automotive vehicle, a device for automatically varying the orientation of the light beam emitted from a light source in said headlamp in accordance with the longitudinal trim of the vehicle, said device comprising a reflector system defining a path for said light beam and comprising at least one parabolic mirror, at least one partspherical mirror, and at least one elliptic mirror, means pivotally mounting said parabolic mirror for movement about a substantially horizontal axis extending transversely of said vehicle, said axis being coincident with the focus of said parabolic mirror, means fixedly mounting said elliptic mirror with one of its two foci coincident with the focus of said parabolic mirror and with its other focus coincident with the center of said part-spherical mirror and said light source, and control means responsive to the longitudinal trim of the vehicle operatively connected to pivotally move said parabolic mirror wherein the light from said source is reflected by said reflector system in a direction determined by the longitudinal trim of said vehicle.
Claim 3
Dependent Claim
30 words
An automatic device according to claim 1, wherein said light source is a filament lamp, the external middle of said filament lying at the axial center of said part-spherical mirror.
Claim 4
Dependent Claim
25 words
An automatic device according to claim 2, wherein the filament of said lamp extends at right angles to the major axis of said elliptic mirror.
Claim 5
Dependent Claim
26 words
An automatic device according to claim 1, further comprising means connected to said parabolic mirror to move said mirror between full-beam open-road lighting and dipped lighting.
Claim 6
Dependent Claim
46 words
An automatic device according to claim 1, wherein said control means comprises means to sense vertical movement of the front and rear wheels of the vehicle with respect to the suspended portion thereof and means to pivot said parabolical mirror in response to the sensed movement.
Claim 7
Dependent Claim
40 words
An automatic device as set forth in claim 1, wherein the cross-sectional outlet area of the light beam produced by the device is about one-Tenth that of a conventional headlamp consisting of a light source and a fixed parabolic reflector.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |