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:
Apr. 21, 2020
Filed:
Sep. 04, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Junji Kotani, Inagi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A projection apparatus that is capable of reducing difference in color tones between diffused light with a high diffusion degree and non-diffused light with a low diffusion degree. An irradiation unit irradiates with light including color components. A modulation unit modulates the light irradiated by the irradiation unit. A diffusion unit diffuses and outputs the light incident from the modulation unit. A color setting unit sets up a target color of the light output from the diffusion unit. A controller controls the irradiation unit and the modulation unit. The controller controls at least one of the irradiation unit and the modulation unit according to variation of characteristics of the diffusion unit so that difference between a color of the light diffused by the diffusion unit and the target color will become small.