Head-up display device
First Claim
1. A head-up display device which makes a virtual image to be formed by projecting display light in a virtual-image forming area on a windshield of a vehicle, the head-up display device comprising:
- a housing disposed below the windshield;
an indicator which is provided in the housing;
a reflector which is detachably fixed at a predetermined position in the housing to reflect a display light which is irradiated directly from the indicator; and
an enlargement mirror by which the display light reflected by the reflector is enlarged and led to the virtual-image forming area on the windshield, whereinthe reflector includes a linear Fresnel lens in which a plurality of slopes which are arranged in parallel with each other and inclined at the same angle are formed, and the slopes serve as reflecting surfaces by being mirrored, the linear Fresnel lens being formed by injection molding of resin, andthe reflector is selected and fixed in the housing so that the angle of the slopes is set to direct the display light output from the housing toward the virtual-image forming area on the windshield through the enlargement mirror.
2 Assignments
0 Petitions
Accused Products
Abstract
A head-up display device which can be applied to various types of vehicles is provided without causing cost increase. A head-up display device which makes a virtual image to be formed by projecting display light on a windshield of a vehicle includes a housing, an indicator which is provided in the housing, and a reflector which is provided in the housing, and includes a plurality of reflecting surfaces which are arranged in parallel with each other and inclined at the same angle so that the display light which is irradiated from the indicator is reflected by the reflecting surfaces.
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Citations
4 Claims
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1. A head-up display device which makes a virtual image to be formed by projecting display light in a virtual-image forming area on a windshield of a vehicle, the head-up display device comprising:
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a housing disposed below the windshield; an indicator which is provided in the housing; a reflector which is detachably fixed at a predetermined position in the housing to reflect a display light which is irradiated directly from the indicator; and an enlargement mirror by which the display light reflected by the reflector is enlarged and led to the virtual-image forming area on the windshield, wherein the reflector includes a linear Fresnel lens in which a plurality of slopes which are arranged in parallel with each other and inclined at the same angle are formed, and the slopes serve as reflecting surfaces by being mirrored, the linear Fresnel lens being formed by injection molding of resin, and the reflector is selected and fixed in the housing so that the angle of the slopes is set to direct the display light output from the housing toward the virtual-image forming area on the windshield through the enlargement mirror. - View Dependent Claims (2, 3, 4)
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Specification