Head-up display device
AssigneeNippon Seiki Co., Ltd.
InventorsTakaharu Iwaya, Chiaki Shibuya
Life of this patent
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Abstract
Provided is a head-up display device capable of reducing the divergence angle of display light which has passed a cross point. A head-up display device comprises: a light source that emits light beams; a liquid crystal panel that emits display light beams upon reception of the light beams from the light source; a first mirror that reflects the display light beams from the liquid crystal panel and causes the reflected display light beams to cross at a cross point in a crossing direction; a second mirror that reflects the display light beams reflected on the first mirror and passed through the cross point; and a second lenticular lens that converges the light beams from the light source and causes the display light beams to reach the first mirror in the converged state.
Claims2
A head-up display device comprising:
- a light source that emits light;
- a liquid crystal panel that receives the light from the light source and emits display light;
- a first mirror that reflects the display light from the liquid crystal panel and causes the reflected display light to cross in a crossing direction at a cross point;
- a second mirror that reflects the display light that has been reflected at the first mirror and has passed the cross point;
- a first optical element that converges the light from the light source to cause the display light to reach the first mirror in a converged state;
- a second optical element that substantially collimates light emitted from the light source;
- and
- a third optical element that diverges the light substantially collimated by the second optical element and then emits the substantially collimated light to the first optical element,
- wherein an incident surface and a light emitting surface of the third optical element are formed in a cylindrical lens array shape extending in mutually intersecting directions.
Dependencies are inferred from the claim text.