# US 10,502,953 B2 · Display device, and mobile body having same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,953 B2 - Document ID: US10502953B2 - Status: Granted - Kind: B2 - Application number: 15/910,067 - Filed: 2018-03-02 - Published: 2018-10-04 - Granted: 2019-12-10 - Earliest claimed: 2017-03-31 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Kosuke Kubota; Toshiya Mori; Ken'ichi Kasazumi; Masahito Ogata - Web page: https://patentgrep.com/patent/US10502953B2 ## CPC - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G02B 17/023: {for extending or folding an optical path, e.g. delay lines} - H04N 9/3102: {using two-dimensional electronic spatial light modulators (micromechanical modulators as such G02B26/0833; liquid crystal modulators as such G02F1/13)} - H04N 9/3129: {scanning a light beam on the display screen (scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161)} - H04N 9/3147: {Multi-projection systems (video walls G06F3/1446)} - H04N 9/317: {Convergence or focusing systems (electronic adjustment of convergence H04N9/3185; convergence or focusing arrangements for cathode ray tubes H04N9/28; means for automatic focusing of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/53)} - G02B 2027/0127: {comprising devices increasing the depth of field} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A display device includes: a video display that displays a video for projecting a virtual image onto a target space on a video display surface; an optical element; and a projector. The optical element moves a partial video, which is a part of the video displayed on the video display surface, to a position distant from the video display in a projection direction in which the video is projected. The projector projects a virtual image viewed by a user by projecting light output from the video display and the optical element to a reflecting member. The optical element has an incident surface on which the partial video is incident, and an emitting surface from which the partial video incident on the incident surface emits. The incident surface and the emitting surface are parallel to each other. ## Claims ### Claim 1 A display device comprising: a video display that displays a video on a video display surface, the video including a first video and a second video; at least one optical element that is disposed on a part of the video display surface and has an incident surface on which the second video is incident, and an emitting surface from which the second video incident on the incident surface emits, and the incident surface and the emitting surface are parallel to each other; and a projector that projects a virtual image viewed by a user by projecting the first video displayed on the video display and the second video emitted from the emitting surface of the at least one optical element to a reflecting member the virtual image including a first virtual image and a second virtual image, the first virtual image corresponding to the first video, and the second virtual image corresponding to the second video. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the at least one optical element includes a plurality of optical elements, and the plurality of optical elements are disposed on the video display surface. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the video display is a projection device that forms the video on the video display surface by projecting light onto the video display surface. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the video display is a video display device that has a flat display panel displaying the video, and a backlight. ### Claim 5 (depends on 1) The display device according to claim 1, wherein a light diffuser that diffuses light is provided on the emitting surface of the at least one optical element. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the video display surface includes a display surface of a fixed screen fixed to a predetermined position, and a display surface of a movable screen, and the at least one optical element is provided on the display surface of the fixed screen. ### Claim 7 (depends on 1) A mobile body comprising: a body; the display device according to claim 1, the display device being mounted on the body; the reflecting member fixed to the body; and a mobile body drive unit that moves the body. ### Claim 8 (depends on 1) The display device according to claim 1, wherein the position at which the second virtual image is projected changes based on a length of the at least one optical element, the length being a length in a direction perpendicular to the video display surface. ### Claim 9 (depends on 1) The display device according to claim 1, wherein the at least one optical element is a bundle of a plurality of optical fibers. ### Claim 10 (depends on 1) The display device according to claim 1, wherein the at least one optical element is a group of fibrous crystals. ### Claim 11 (depends on 1) The display device according to claim 1, wherein a position at which the second virtual image is projected is nearer to the user than a position at which the first virtual image is projected.