Optical: systems and elements – Single channel simultaneously to or from plural channels – By refraction at beam splitting or combining surface
Patent
1995-03-07
1996-10-01
Epps, Georgia Y.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By refraction at beam splitting or combining surface
359 13, 359637, 359837, G02B 2714, G02B 504, G03H 100
Patent
active
055615597
ABSTRACT:
A display device for motor vehicles in which an image on the display is reflected by a reflecting member on the windshield to allow the virtual image to be viewed by the driver. The display device includes a display having an upwardly facing display surface, a first prism having a vertical angle .theta. formed by two surfaces of a first prism arranged so as to face the driver with one of the two surfaces arranged so as to face the display surface of the display and a second prism having substantially the same vertical angle as the first prism and being arranged in mating relation to the first prism with the vertical angles thereof opposing each other. In one embodiment, the bottom surface of the second prism confronting the vertical angle .theta. is matted, whereas other surfaces than the two surfaces forming the vertical angle .theta. are coated in a dark color. In another embodiment, the second prism is designed so as to prevent light emitted from the display surface from reflecting off the bottom dark colored surface of the second prism into the visual field of the driver.
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Furuya Yoshiyuki
Korenaga Hidenobu
Epps Georgia Y.
Mack Ricky
Yazaki -Corporation
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