Title:
光学素子及びそれを用いた映像表示装置
Document Type and Number:
Japanese Patent JP7152019
Kind Code:
B2
Abstract:
Provided is an optical element that improves the contrast of an image by suppressing stray light not contributing to forming of a real mirror image and that reduces white blur by suppressing scattering of light between two-surface corner reflectors. An optical element 1 includes a base 2 that is formed of a transparent material and forms one flat surface, and a plurality of protruding parts 3 that are integrally formed so as to protrude from the base 2. Adjacent vertical surfaces 31, 32 among side surfaces constituting each protruding part 3 form a two-surface corner reflector 30 having two substantially perpendicular surfaces. Disposed between the plurality of protruding parts 3 are: low refractive index parts 4 composed of a medium having a refractive index that is lower than that of the transparent material constituting the protruding parts 3; and light absorbing parts 5 that absorb light guided between the plurality of the protruding parts 3. In addition, the low refractive index parts 4 contact the two-surface corner reflectors 30.
More Like This:
Inventors:
Yuki Maeda
Maekawa Satoshi
Maekawa Satoshi
Application Number:
JP2018564175A
Publication Date:
October 12, 2022
Filing Date:
December 25, 2017
Export Citation:
Assignee:
Parity Innovations Inc.
International Classes:
G02B5/09; G02B30/60; H04N13/302
Domestic Patent References:
| JP2011191404A | ||||
| JP2012247459A | ||||
| JP2003066206A |
Foreign References:
| WO2009131128A1 | ||||
| WO2011108469A1 | ||||
| CN107167918A | ||||
| US20100123951 | ||||
| US20140253880 | ||||
| US20030021028 |
Attorney, Agent or Firm:
Yasuo Itaya
Previous Patent: Cleaning ball for tubular medical device and manufacturing method thereof
Next Patent: Heat dissipation sheet
Next Patent: Heat dissipation sheet