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. 27, 1987
Filed:
Nov. 01, 1985
Yasuhiro Kato, Tokyo, JP;
Mitsuhiro Koyama, Tokyo, JP;
Yamada Iryo Shomei Kabushiki Kaisha, Tokyo, JP;
Abstract
A shadowless lighting equipment for medical use includes an illuminating device for emitting a wave beam such as an infrared ray beam subjected to frequency modulation on a patient on an operating table so as to form an irradiation area thereon, an image forming device which forms an image of the irradiation area in accordance with a wave beam reflected from the irradiated portion of the patient, and a sensor for comparing information regarding an image forming position by the image forming device with information regarding a light concentration position of a lighting device. In this comparison, when the image forming position is spaced apart from the light concentration position, an output containing information regarding the positional difference between the positions is provided, and, in response to such an output, the lighting device is driven in the X axis, Y axis, and perpendicular directions of a coordinate surface so that the light concentration position becomes the same as the image forming position.