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:
Jan. 03, 2012
Filed:
May. 30, 2007
Yoshitada Oshida, Ebina, JP;
Yoshitatsu Naito, Ebina, JP;
Mituhiro Suzuki, Ebina, JP;
Tsuyoshi Yamaguchi, Ebina, JP;
Shigenobu Maruyama, Yokohama, JP;
Yoshitada Oshida, Ebina, JP;
Yoshitatsu Naito, Ebina, JP;
Mituhiro Suzuki, Ebina, JP;
Tsuyoshi Yamaguchi, Ebina, JP;
Shigenobu Maruyama, Yokohama, JP;
Hitachi Via Mechanics, Ltd., Ebina-shi, JP;
Abstract
A parallel glass which is a prism having a parallelogram-shaped cross section in an x-y direction, and parallel glasses which are prisms having a parallelogram-shaped cross section in the x-y direction and each include grooves formed in one surface in a z direction perpendicular to the x-y direction, are stacked in direct contact with each other such that the grooves are located on the inside, and light trying to enter the grooves is subjected is total reflection, thereby changing incident parallel beams with a pitch of 13 mm into emergent parallel beams with a pitch of 1 mm.