Head-up display
First Claim
Patent Images
1. A head-up display containing a plurality of elements optically coupled along an optical path, the display comprising:
- an image source that emits a visible light for generating an image;
a means for diffusing light that receives the visible light from the image source to project the transmitted generated image thereon, the means for diffusing light including a lens for passing the image through the lens and providing optical gain for the image; and
a holographic element that receives and magnifies the generated image from the means for diffusing light for producing a virtual image therefrom.
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Abstract
A head-up display includes an image source, such as a laser scanner, a means for diffusing light and a transparent element that can include a holographic element. The laser scanner emits a visible light for generating an image. The means for diffusing light receives the visible light from the laser scanner to project the image thereon, and preferably apply gain thereto. The transparent element produces a virtual or a real image of the image from the means for diffusing light. In a vehicle, the head-up display is configured to reflect the image into the vehicle to provide a virtual image ahead of a driver.
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Citations
19 Claims
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1. A head-up display containing a plurality of elements optically coupled along an optical path, the display comprising:
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an image source that emits a visible light for generating an image; a means for diffusing light that receives the visible light from the image source to project the transmitted generated image thereon, the means for diffusing light including a lens for passing the image through the lens and providing optical gain for the image; and a holographic element that receives and magnifies the generated image from the means for diffusing light for producing a virtual image therefrom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A head-up display for a vehicle containing a plurality of elements optically coupled along an optical path, the display comprising:
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a laser scanner that emits a raster scan of visible light to generate an image; a means for diffusing light placed in an intermediate plane of the optical path that receives the visible light from the laser scanner to project and apply adjustable gain to the image generated thereon, the means for diffusing light including a lens for passing the image through the lens and providing optical gain for the image; and a holographic element for producing a virtual image from the generated image, the head-up display being operable to project the image to a driver within the vehicle using a windshield of a vehicle in a way to provide a virtual image at a predetermined distance ahead of the windshield. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A head-up display containing a plurality of elements optically coupled along an optical path for operation using a windshield of a vehicle, the display comprising:
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a laser scanner that emits a raster scan of visible light to generate an image; a means for diffusing light placed in an intermediate plane of the optical path that receives the visible light from the laser scanner to project and apply an adjustable gain to the transmitted generated image thereon, the means for diffusing light including a lens for passing the image through the lens and providing optical gain for the image; and a holographic element placed between the laser scanner and a driver of the vehicle, the holographic element receiving and magnifying the image to produce a virtual image therefrom, the head-up display being operable to project the image to a driver within the vehicle using a windshield of a vehicle in a way to provide a virtual image at a predetermined distance ahead of the windshield. - View Dependent Claims (18, 19)
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Specification