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. 11, 2014
Filed:
Nov. 14, 2011
Tetsuya Satoh, Miyagi, JP;
Hideaki Yamamoto, Kanagawa, JP;
Kenichiroh Saisho, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image projection apparatus includes an input part that inputs image data, a frame memory that stores the image data, a laser oscillator that radiates a laser to a screen, a deflection part including a reflective optical element and configured to oscillate the reflective optical element with respect to two perpendicularly intersecting axes, a storage part that stores coefficient data of a polynomial expression, an irradiation position calculating part that calculates an irradiation position based on a coefficient obtained by using the coefficient data and an oscillation angle of the reflective optical element, an address calculating part that calculates an address in the frame memory corresponding to the irradiation position, a memory control part that reads out pixel data of the address, and a laser drive part that oscillates the laser oscillator in accordance with a luminance that corresponds to the pixel data.