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:
Dec. 27, 2019
Keyence Corporation, Osaka, JP;
Zhuoli Sun, Osaka, JP;
Keyence Corporation, Osaka, JP;
Abstract
To make it possible to generate sinusoidal pattern light as intended and to prevent the occurrence of high-frequency waviness in a height image even if a dimension of a light emitting surface of a light emitting diode is equal to or less than a dimension of a half cycle of a sine-wave. The dimension of the light emitting surface of the light emitting diodeis set to be equal to or less than a half cycle of a sine-wave of the pattern light. A plurality of light emitting diodesare arranged in a direction in which illuminance of the pattern light does not change, and are arranged to be deviated in a direction in which the illuminance of the pattern light changes.