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:
Oct. 15, 2019
Filed:
May. 17, 2017
Arisawa Mfg. Co., Ltd., Niigata, JP;
Hajime Maruta, Niigata, JP;
ARISAWA MFG. CO., LTD., Niigata, JP;
Abstract
A screen with a high flatness where no distortion arises in a central portion of the screen can be obtained. A first thickness of a portion other than a plurality of inclined portions that reflects to the front a obliquely-incident projection light is no more than 2 times a second thickness of the inclined portion. Moreover, a width is about 1550 mm, a height is about 900 mm, and when the reflective screen is suspended so a vertically-downward pulling load is about 3 kg, in a first region that includes the central portion of the reflective screen but does not include an end portion of the reflective screen, no shift arises in an image displayed on the reflective screen between when a reference line passing through a substantially central portion of the reflective screen at an incidence angle of about 15 degrees and when the reference line is projected at an incidence angle of about 60 degrees.