Display device for vehicle
First Claim
Patent Images
1. A display device for a vehicle comprising:
- a display which emits an emission display light having a polarization plane only in a horizontal direction;
an illumination light source which illuminates the display;
a phase difference plate, a λ
/4 plate, which is disposed facing the display in a state where a fast axis is shifted by 45 degrees with respect to the polarization plane of the emission display light emitted by the display;
an adjusting mechanism which variably adjusts an incident angle of a final display light incident on a windshield of the vehicle such that the final display light is incident on the windshield at Brewster'"'"'s angle as the incident angle, wherein the final display light indicates a display light transmitted through the phase difference plate; and
a rotating mechanism which rotates the phase difference plate at an arbitrary angle.
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Abstract
A display device for a vehicle according to the present invention includes a display which emits an emission display light having a polarization plane in a specific direction, an illumination light source which illuminates the display, and a phase difference plate which is disposed facing the display in a state where a fast axis is shifted by a predetermined angle with respect to the polarization plane of the emission display light emitted by the display.
8 Citations
4 Claims
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1. A display device for a vehicle comprising:
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a display which emits an emission display light having a polarization plane only in a horizontal direction; an illumination light source which illuminates the display; a phase difference plate, a λ
/4 plate, which is disposed facing the display in a state where a fast axis is shifted by 45 degrees with respect to the polarization plane of the emission display light emitted by the display;an adjusting mechanism which variably adjusts an incident angle of a final display light incident on a windshield of the vehicle such that the final display light is incident on the windshield at Brewster'"'"'s angle as the incident angle, wherein the final display light indicates a display light transmitted through the phase difference plate; and a rotating mechanism which rotates the phase difference plate at an arbitrary angle. - View Dependent Claims (2)
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3. A display device for a vehicle comprising:
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a display which emits an emission display light having a polarization plane only in a horizontal direction; an illumination light source which illuminates the display; a phase difference plate, being a λ
/2 plate, which is disposed facing the display in a state where a fast axis is shifted by 22.5 degrees with respect to the polarization plane of the emission display light emitted by the display;an adjusting mechanism which variably adjusts an incident angle of a final display light incident on a windshield of the vehicle such that the final display light is incident on the windshield at Brewster'"'"'s angle as the incident angle, wherein the final display light indicates a display light transmitted through the phase difference plate; and a rotating mechanism which rotates the phase difference plate at an arbitrary angle. - View Dependent Claims (4)
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Specification
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Current AssigneeYazaki Corporation
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Original AssigneeYazaki Corporation
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InventorsMatsushita, Junichi, Aoki, Kunimitsu
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Primary Examiner(s)Dudek, James
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Application NumberUS14/199,109Publication NumberTime in Patent Office936 DaysField of SearchUS Class Current1/1CPC Class CodesG02B 2027/012 comprising devices for atte...G02B 27/0101 characterised by optical fe...G02B 5/30 Polarising elements light-m...G02F 1/13363 Birefringent elements, e.g....
