公开(公告)号：US10324296B2

公开(公告)日：2019-06-18

申请号：US15872258

申请日：2018-01-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Mitani ,  Katsuo Saigou ,  Kenya Uomori

IPC: G02B27/01

Abstract: A display device displays video for a virtual image. The display device includes a video generation unit generates image light representing the video, a concave mirror has a reflective surface on which the image light is reflected, and a support mechanism adjusts a position of the concave mirror. The concave mirror has, in each position on the reflective surface, a first radius of curvature in the first direction and a second radius of curvature in a second direction. The first radius of curvature and the second radius of curvature individually change and have different rates of change. The reflective surface has a shape following a partial region on an outer surface of an ellipsoid. The ellipsoid has a radius along the first direction that is greater than a radius along the second direction and a radius along a third direction orthogonal to the first direction and the second direction.

公开(公告)号：US09641829B2

公开(公告)日：2017-05-02

申请号：US14711150

申请日：2015-05-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Katsuo Saigo ,  Hiroshi Mitani ,  Kei Tasaka ,  Kazuo Okamoto ,  Shuji Inoue

IPC: G02B3/00 ,  G02B27/22 ,  H04N13/04 ,  H04N13/00 ,  F21V8/00

CPC classification number: H04N13/315 ,  G02B6/0053 ,  G02B6/0068 ,  G02B27/2214 ,  G02B27/225 ,  H04N13/144 ,  H04N13/302 ,  H04N13/305 ,  H04N13/307 ,  H04N13/31 ,  H04N13/312 ,  H04N13/32 ,  H04N13/324

Abstract: An image display apparatus includes: a first light source; a second light source; a deflection unit for deflecting the light emitted from the first light source toward a viewing position of the first image and deflecting the light emitted from the second light source toward a viewing position of the second image; and a spatial light modulator that has a plurality of pixels each of which includes a plurality of subpixels, and modulates the light having passed through the deflection unit on the basis of a first image signal and a second image signal. Each of subpixels is formed in a shape where the length in the first direction, which is substantially parallel with the line connecting the viewing position of the first image to the viewing position of the second image, is longer than or equal to the length in the second direction orthogonal to the first direction.

公开(公告)号：US11908427B2

公开(公告)日：2024-02-20

申请号：US18089809

申请日：2022-12-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroyuki Kado ,  Hiroshi Mitani

IPC: G09G5/10 ,  G09G3/36

CPC classification number: G09G3/3607 ,  G09G3/3696 ,  G09G2300/0452 ,  G09G2320/029 ,  G09G2320/0242 ,  G09G2320/064

Abstract: This display device includes n number of liquid crystal displays, where n is an integer of 2 or more, light sources that can emit light of a plurality of different colors and that are provided to the respective liquid crystal displays, and a processor that causes the light sources to emit light of different colors so as to vary emission start timings for the respective light sources provided to the liquid crystal displays on the basis of input signals including color information regarding sub display images to be displayed on the respective liquid crystal displays.

公开(公告)号：US10209518B2

公开(公告)日：2019-02-19

申请号：US15226354

申请日：2016-08-02

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Katsuo Saigo ,  Hiroshi Mitani

IPC: G02B27/01 ,  G02B5/28

Abstract: The present disclosure provides a display apparatus, in which a shift of a transmission or reflection wavelength characteristic due to an incident angle of light is suppressed, and observation of external light necessary for display and image light necessary for display is possible. The display apparatus of the present disclosure includes an image light generator that generates image light by use of light in each of at least a first wavelength band, a second wavelength band, and a third wavelength band, and a light synthesizing part that transmits external light and reflects the image light. The light synthesizing part has a transparent substrate having a concave surface on which the image light is reflected, and a film that is provided on the concave surface of the substrate, reflects the image light, and transmits light in a predetermined wavelength band of the external light.