US 2019/0196187 A1Published application

Display apparatus

AssigneePanasonic Intellectual Property Management Co., Ltd.

InventorsKEN'ICHI KASAZUMI, KOSUKE KUBOTA, MASAHITO OGATA, TOSHIYA MORI

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Abstract

A display apparatus that displays a virtual image having a shape that follows an object to be superimposed when viewed from a user is provided. An optical system that is included in the display apparatus and displays a virtual image that is three-dimensional includes a laser that emits laser light, a MEMS scanner that performs scanning with the laser light, a screen that forms an image on a surface of the screen with the MEMS scanner scanning the surface with the laser light, a projection unit that generates a virtual image by projecting the image formed onto a display medium, and a drive unit that reciprocates the screen scanned with the laser light in a predetermined section along an optical path of the optical system at a predetermined cycle. The MEMS scanner changes a vertical movement speed of a scan line according to a shape of an object included in a background and is superimposed with the virtual image in scanning performed with the laser light at a scanning cycle in synchronization with a cycle of the reciprocation.

Claims3

Dependent claims

A display apparatus comprising an optical system for displaying a virtual image that is three-dimensional by using a display medium that is transparent, wherein

the optical system includes
a laser configured to emit laser light,
a micro electro mechanical system (MEMS) scanner configured to receive and reflect the laser light, and perform scanning with the laser light that is reflected,
a screen configured to form an image on a surface of the screen with the MEMS scanner scanning the surface with the laser light,
a projection unit configured to generate a virtual image that is perceived by a user, by projecting the image formed on the surface of the screen onto the display medium, and
a drive unit configured to reciprocate the screen scanned with the laser light in a predetermined section along an optical path of the optical system at a predetermined cycle, wherein
the MEMS scanner performs the scanning by repeatedly raster-scanning the screen with the laser light at a scanning cycle that is synchronized with the predetermined cycle, and
in the raster-scanning, changes a vertical movement speed of a scan line on the screen according to a shape of an object that is included in a background and is superimposed with the virtual image when viewed from the user.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/328,714Filed 8 Sep 2017
Priority: JP 2016-17994214 Sep 2016
Published: 27 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

G02B 27/0101
Head-up displays: characterised by optical features
B60K 35/211
Using visual output, e.g. blinking lights or matrix displays: producing three-dimensional [3D] effects, e.g. stereoscopic images
B60K 35/23
Using visual output, e.g. blinking lights or matrix displays: head-up displays [HUD]
B60K 35/28
Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor: characterised by the type of the…