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:
Jun. 11, 2019
Filed:
Mar. 15, 2016
Dexerials Corporation, Tokyo, JP;
DEXERIALS CORPORATION, Tokyo, JP;
Abstract
A wavelength plate, wherein first birefringent layer and second birefringent layer are laminated such that in-plane directions of optical axes of first birefringent layer and second birefringent layer cross each other, wherein the wavelength plate satisfies formulae (1), (2), (3), and (4), and wherein at least one of first birefringent layer and second birefringent layer is obliquely-deposited birefringent layer formed by oblique deposition,Δ1×1=λ/2  (1)1.7≤(Δ1×1)/(Δ2×2)≤2.7  (2)5°≤θ1≤30°  (3)(2θ1+35°)≤θ2≤(2θ1+50°)  (4)