US4962998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indication display unit for vehicles
Assignee: Yazaki Corp
•
Filing: 1988-09-06
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Granted: 1990-10-16
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Expires: 2008-09-06
Abstract
Abstract An indication display unit for vehicles which enables a driver to sight an indication image comprises an image projector device including an indicating means, a light source and an optical system for the image projector, a projecting surface means having a concave surface in front of driver's seat with a predetermined interval, and means for making an image of indications projected from the image projector at the point of driver's eyes.
Inventors
- 👤 Tadashi Iino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:51
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101; B; B60; B60K; B60K35/00; B60K35/20; B60K35/21; B60K35/23; B60K35/231; B60K35/60; B60K35/65; B60K35/654; B60K35/80; G02B27/0149; G09; G09B; G09B9/00; G09B9/02; G09B9/04; G09B9/05; B60K2360/00; B60K2360/20; B60K2360/33; B60K2360/334; G02B2027/0154; G02B2027/0169; G02B27/0179; G02B2027/0187
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
An indication display unit for a vehicle for enabling a driver to sight an indication image comprising an image projector device having an indicating means, a light source and an optical system; a projecting surface means having a concave surface along its length for directly reflecting thereon the indication image from the image projector device to the driver and located in front of a driver's seat at a predetermined interval; and control means operably coupled to the image projector device for controlling a projected image of indications projected from the image projector device, said control means controls the projected image of indications dependent on the steering angle of the vehicle.
Claim 2
Dependent Claim
110 words
An indication display unit for a vehicle for enabling a driver to sight an indication image comprising an image projector device having an indicating means, a light source and an optical system; a projecting surface means having a concave surface along its length for directly reflecting thereon the indication image from the image projector device to the driver and located in front of a driver's seat at a predetermined interval; and control means operably coupled to the image projector device for controlling a projected image of indications projected from the image projector device, said control means controls the projected image of indications dependent on the steering angle of the vehicle.
Claim 3
Dependent Claim
35 words
An indication display unit for a vehicle as claimed in claim 1, wherein said control means for controlling a projected image of indications includes means for adjusting the projecting angle of the image projector device.
Claim 4
Dependent Claim
46 words
An indication display unit for vehicles as claimed in claim 2, wherein said means for adjusting the projection angle of the image projector device includes a steering angle sensing means to thereby permit a driver to view the indication image at any eye level or position.
Claim 5
Dependent Claim
62 words
An indication display unit for vehicles as claimed in claim 3, wherein the concave curvature whose radius of curvature R is obtained by calculation in the following approximate formula (1): ##EQU3## wherein A stands for the distance from the projecting device to the reflecting point of the projecting surface, and B is the distance from the reflecting point to the driver's eyes.
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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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |