Double directional image development head-up display optical system
First Claim
Patent Images
1. A double directional image development head-up display system comprising:
- a combiner having its individual spectral distributions of reflection light and transmission light perfectly separated from each other;
an optical projector including a light source and display unit;
for projecting light beams representing a display of image data onto said combiner for reflection thereby and for transmission therethrough to provide observers with a developed image of the display; and
an image reversing means for reversing at least a part of the image to be displayed on the display unit with the reflection light, whereby the same or different image data are developed on the dual sides of the combiner at the same time so as to be correctly observed by the observers present on both sides across the combiner.
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Abstract
A double directional image development HUD includes a combiner having individual spectral distributions perfectly separated from each other, wherein the image displayed on an LCDU is formed using green light with a sharp spectral distribution and using another color light with a different wavelength, and wherein light beams projected from the LCDU onto a combiner are perfectly divided into two beams, i.e., a reflection light beam and a transmission light beam both of which are perfectly separated from each other, thereby obtaining a clear projected image to be observed by the observers inside and outside the combiner without any contamination.
12 Citations
8 Claims
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1. A double directional image development head-up display system comprising:
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a combiner having its individual spectral distributions of reflection light and transmission light perfectly separated from each other; an optical projector including a light source and display unit;
for projecting light beams representing a display of image data onto said combiner for reflection thereby and for transmission therethrough to provide observers with a developed image of the display; andan image reversing means for reversing at least a part of the image to be displayed on the display unit with the reflection light, whereby the same or different image data are developed on the dual sides of the combiner at the same time so as to be correctly observed by the observers present on both sides across the combiner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification