HEAD UP DISPLAY APPARATUS
First Claim
1. A head up display apparatus, comprising:
- an image reflection surface that faces an observer and reflects display light toward the observer;
a first image display element that outputs display light onto the image reflection surface;
a second image display element that outputs display light onto the image reflection surface;
images displayed by the first image display and the second display element being magnified and displayed beyond the image reflection surface as virtual images;
the head up display apparatus further comprising;
a greater distance optical system that displays a virtual image of the image displayed by the first image display element at a greater distance from the image reflection surface;
a closer distance optical system having a power different from that of the greater distance optical system that displays a virtual image of the image displayed by the second image display element at a closer distance from the image reflection surface; and
an optical filter having spectral properties that reflects light of a first wavelength band and transmits light of a second wavelength band that does not include the first wavelength band;
the greater distance optical system and the closer distance optical system being arranged to have the optical filter interposed therebetween.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical filter having spectral properties that reflects light of a first wavelength band and transmits light of a second wavelength band that does not include the first wavelength band is provided between a greater distance optical system that displays a virtual image at a greater distance from an image reflection surface and a closer distance optical system that displays a virtual image at a closer distance from the image reflection surface. The optical filter aligns the optical paths of display light of the greater distance optical system and the closer distance optical system and guides the display light to the image reflection surface. Further, the powers of the greater distance optical system and the closer distance optical system are set to be different.
3 Citations
10 Claims
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1. A head up display apparatus, comprising:
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an image reflection surface that faces an observer and reflects display light toward the observer; a first image display element that outputs display light onto the image reflection surface; a second image display element that outputs display light onto the image reflection surface; images displayed by the first image display and the second display element being magnified and displayed beyond the image reflection surface as virtual images; the head up display apparatus further comprising; a greater distance optical system that displays a virtual image of the image displayed by the first image display element at a greater distance from the image reflection surface; a closer distance optical system having a power different from that of the greater distance optical system that displays a virtual image of the image displayed by the second image display element at a closer distance from the image reflection surface; and an optical filter having spectral properties that reflects light of a first wavelength band and transmits light of a second wavelength band that does not include the first wavelength band; the greater distance optical system and the closer distance optical system being arranged to have the optical filter interposed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification