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:
Nov. 10, 2009
Filed:
Oct. 10, 2003
Akira Shiota, Saitama, JP;
Makoto Yasunaga, Kawagoe, JP;
Sadao Masubuchi, Chofu, JP;
Akinobu Iwako, Iruma, JP;
Akira Shiota, Saitama, JP;
Makoto Yasunaga, Kawagoe, JP;
Sadao Masubuchi, Chofu, JP;
Akinobu Iwako, Iruma, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
The invention is directed to the provision of an exposure apparatus in which is stored an electric current value appropriately determined for supply to a light-emitting device, and a method for producing such an exposure apparatus. The production method according to the invention comprises the steps of supplying a reference electric current to the light-emitting device, and measuring the amount of light from each of the plurality of pixels of the light modulating device, determining whether a minimum value among the amounts of light measured from the plurality of pixels lies within a predetermined range, and determining the value of the electric current to be supplied to the light-emitting device so that the minimum value of the amounts of light falls within the predetermined range when the minimum value of the amounts of light is outside the predetermined range.