The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Nov. 15, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Tsunenori Ashibe, Yokohama, JP;
Hidehiko Fujimura, Hachioji, JP;
Katsuhiro Watanabe, Wako, JP;
Hiroyuki Morimoto, Utsunomiya, JP;
Shunsuke Kuboyama, Kawasaki, JP;
Toshiji Nishiguchi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A display device includes a laser irradiation device and a control device. The laser irradiation device is configured to irradiate an irradiation point located at a display position in air, with a laser beam having a wavelength equal to or larger than 380 nm and equal to or smaller than 780 nm and produce plasma at the display position. The control device is configured to control intensity of the laser beam emitted from the at least one laser irradiation device so that a relationship between intensity of plasma light emitted from the plasma at the display position and intensity of scattered light produced from the laser beam and scattered by the plasma becomes a predetermined relationship to display a color pixel.