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US 2018/0003970 A1Published application
Head-up display
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsSosuke OTANI, Yoshimasa FUSHIMI
Life of this patent
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Abstract
A head-up display causes light modulated by an optical modulation element to form, via a projection lens, an intermediate image on a screen, and then causes the intermediate image to reflect, via a mirror, on a windshield to allow a user to view a virtual image. A normal line of the screen is inclined with respect to an optical axis of the projection lens. An emission surface of the optical modulation element is inclined with respect to the screen and a principal plane of the projection lens so as to satisfy a Scheimpflug condition.
Claims6
A head-up display comprising:
- a projection lens that causes light modulated by an optical modulation element to form an intermediate image;
- a screen onto which the intermediate image is formed;
- and
- a mirror that projects the intermediate image formed on the screen onto a combiner,
- wherein
- the intermediate image projected by the mirror is reflected by the combiner to allow a user to view a virtual image,
- a normal line to a surface of the screen is inclined with respect to an optical axis of the projection lens, and
- an emission surface of the optical modulation element is inclined with respect to a principal plane of the projection lens so as to satisfy a Scheimpflug condition with respect to the emission surface of the optical modulation element, the surface of the screen, and the principal plane of the projection lens.
5 more elements
Dependencies are inferred from the claim text.