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:
Aug. 16, 2011
Filed:
Oct. 10, 2008
Masayuki Oto, Zama, JP;
Masayuki Oto, Zama, JP;
Epson Toyocom Corporation, , JP;
Abstract
A laminated wave plate that corresponds to a plurality of wavelengths including at least two wavelengths of λand λ, and includes a first wave plate disposed on an incident side and a second wave plate disposed on an emitting side, the first wave plate and the second wave plate being laminated in such a manner that their optical axes are intersected each other, includes the following equations from (1) to (5):Γ=360°+360°×2  (1);Γ=180°+360°×  (2);Γ=360°×2  (3);Γ=360°×  (4); and=(Δ)×(λ/λ)×(0.5+)  (5),in which