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:
Sep. 06, 2018
Panasonic Corporation, Osaka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
PANASONIC CORPORATION, Osaka, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A provided flash unit includes a light emitting part in the main unit of the flash unit and a distance sensor provided only in the light emitting part, achieving an accurate measurement of a distance from a subject. In the flash unit according to the present invention, the light emitting part () includes a light receiving element () that measures reflected light when light is emitted in advance from the light emitting part () to a subject (T) and reflected light when light is emitted in advance from the light emitting part () to a reflector (X) for bounce photography, the flash unit determines and controls a proper tilt angle (θ) of the light emitting part () relative to a main unit () based on a distance (La) from the subject (T) and a distance (Lb) from the reflector (X), the distances being measured based on the detection by the light receiving element (), and directivity for the detection by the light receiving element () is tilted toward the main unit () with respect to a horizontal direction.