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:
Dec. 29, 1987
Filed:
Feb. 24, 1986
Yoshio Yazaki, Chofu, JP;
ORC Manufacturing Co., Ltd., Tokyo, JP;
Abstract
In an exposure device, the light rays emitted from a light source and radiated at an illumination surface, the light rays directly incident to the illuminated surface, the light rays incident to the illuminated surface at greater angles of incidents and the light rays which cause the overexposure of the object to be exposed are interrupted by an optical shielding plate interposed between the light source and the illuminated surface so that the unwanted light rays can be cut-off. The illuminated surface has a specific illumination distribution pattern inherent to the light source used so that the integrated quantities of light rays each incident to each point on the surface of the object to be exposed do not become uniform. According to the present invention, the object to be exposed or reciprocated across the illuminated surface and the angular position of the light sources varied in the forward and return strokes so that the illumination distribution pattern of the exposure light emitted from the light source is also varied. In addition, upon rotation of the light source an angle of incidents of each exposure light ray which is not perpendicular to the surface of the object to be exposed is inclined to the opposite direction to the surface of the object to be exposed.