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:
May. 21, 2002
Filed:
Aug. 29, 2000
Akira Sato, Shiga-Ken, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
In a method, a light emitting portion of a light spot forming device is formed. The light emitting portion has a minute opening, and a light collecting portion for collecting the light coming from a light source for light spot formation to the minute opening. A light emitting portion base film and a resist film are successively formed on the light collecting portion. A light intercepting mask and a light amount detecting device are arranged. The position of the light intercepting mask is adjusted such that the light from the light source is collected by the light collecting portion onto the base film, and is received by the light amount detecting device, and the amount of light detected by the device takes on the maximum value. The resist film is exposed with the light from a light source for exposure through the through-hole in the mask to form a through-hole for etching. The minute opening is formed by effecting etching on the base film through the through-hole, and thereby the light emitting portion is formed. Then, the resist film is removed.