Title:
DIRECTIONAL BACKLIT DISPLAY DEVICE WITH EYE TRACKING
Document Type and Number:
Japanese Patent JP2023058418
Kind Code:
A
Abstract:
To provide a directional backlit display device which allows an observer to view the entire image at various positions.SOLUTION: A directional backlit display device includes a light source module 1, a reflective narrow-angle diffuser 2, a backlit type display panel 3, an eye tracking device 5 and a controller 6. The diffuser 2 includes a shaft 22 and is utilized to reflect and uniformly diffuse the light to provide a uniform directional light beam. The backlit type display device panel 3 is included on a projecting optical path of the uniform directional light beam. The uniform directional light beam illuminates an image displayed on the backlit type display device panel 3 and projects to a projection area. The controller 6 receives eye position information from the eye tracking device 5 and calculates a coordinate. The controller 6 calculates a corrective projection area when the coordinate deviates from the projection area, and the drive module 4 rotates the reflective narrow-angle diffuser 2 around an axis of the shaft 22 according to the corrective projection area, so the image projection area moves with the eye.SELECTED DRAWING: Figure 6
Inventors:
CHEN XI XUN
Application Number:
JP2022041265A
Publication Date:
April 25, 2023
Filing Date:
March 16, 2022
Export Citation:
Assignee:
E LEAD ELECTRONIC CO LTD
International Classes:
G09G5/00; B60K35/00; F21S2/00; F21V7/04; F21V14/04; F21V23/00; G02B5/00; G02B5/02; G02B7/182; G09F9/00; G09G3/20; G09G3/34; G09G5/36; G09G5/38; H04N5/74
Domestic Patent References:
| JP2009217259A | 2009-09-24 |
Foreign References:
| WO2007004377A1 | 2007-01-11 | |||
| US20180252915A1 | 2018-09-06 |
Attorney, Agent or Firm:
Sakuo Yamaguchi
Nobuyuki Oshima
Shinjiro Yamaguchi
Tadahiro Matsumoto
Nobuyuki Oshima
Shinjiro Yamaguchi
Tadahiro Matsumoto