Wide field of view automotive rear vision optical system
First Claim
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1. A vehicle rearview optical system comprising:
- first reflecting means for providing a driver with a rear view of a scene, said reflecting means being adjustable to accommodate viewing by the driver;
second reflecting means for providing a magnified image of said scene, said second reflecting means positioned to reflect rays to said first reflecting means to provide a wide field of view of the scene to the driver, andwherein said second reflecting means includes an afocal three-mirror anastigmat telescope providing magnification of said scene being viewed.
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Abstract
The present optical system (20) provides an all-reflective vehicle rear vision optical system. A planar mirror (22), acting like a conventional vehicle rearview mirror, would be positioned to receive a beam. The beam would be provided by an image erecting assembly (30) which, in turn, would reflect the beam into a three-mirror anastigmat telescope (24, 26 and 28) to provide rearward image beam to the first planar mirror and in turn, to the exit pupil (25). The optical system provides a 2X magnification at a wide field of view which substantially eliminates blind spots.
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Citations
14 Claims
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1. A vehicle rearview optical system comprising:
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first reflecting means for providing a driver with a rear view of a scene, said reflecting means being adjustable to accommodate viewing by the driver; second reflecting means for providing a magnified image of said scene, said second reflecting means positioned to reflect rays to said first reflecting means to provide a wide field of view of the scene to the driver, and wherein said second reflecting means includes an afocal three-mirror anastigmat telescope providing magnification of said scene being viewed. - View Dependent Claims (2, 3)
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4. A rearview optical system for a vehicle comprising:
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a single fold mirror adapted to be positioned within a vehicle and adjustable by a driver, said single fold mirror providing the driver with a view of a scene rearward of his position within the vehicle; an afocal three-mirror anastigmat telescope for providing a magnified image of said scene, said three-mirror anastigmat positioned to direct rays from the viewed scene to said single fold mirror; and reflective image erecting assembly for providing said scene to said three-mirror anastigmat telescope, said image erecting assembly positioned to direct ray from said scene to said three-mirror anastigmat telescope to provide a wide field of view of the scene to the driver. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A vehicle including a rearview optical system comprising:
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a vehicle having a roof panel, said roof panel forming a top of a passenger compartment; a single fold mirror positioned within said passenger compartment and being adjustable by a driver, said single fold mirror providing the driver with a view of a scene rearward of his position within the vehicle passenger compartment; an afocal three-mirror anastigmat telescope for providing a magnified image of said scene, said three-mirror anastigmat positioned on said vehicle roof panel to direct rays of the viewed scene to said single fold mirror; and a reflecting image erecting assembly for providing said scene to said three-mirror anastigmat telescope, said image erecting assembly positioned to direct ray from said scene to said three-mirror anastigmat telescope to provide a wide field of view of the scene to the driver. - View Dependent Claims (11, 12, 13, 14)
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Specification