OPTICAL SYSTEM, IMAGE DISPLAY DEVICE, AND IMAGING DEVICE
First Claim
Patent Images
1. An optical system comprising a prism and a diffractive optical element;
- whereinthe prism has a non-rotationally-symmetric aspheric surface for correcting eccentric aberration;
the diffractive optical element includes a diffractive optical surface having a lattice structure that is asymmetric about an optical axis of the optical system; and
the following condition is satisfied where Δ
Ne represents the refractive index difference of the diffractive optical surface in relation to the e-line (546.074 nm).
0.53>
Δ
Ne>
0.005
(1)
1 Assignment
0 Petitions
Accused Products
Abstract
This optical system (100) comprises a prism (12) and a diffractive optical element (13). The prism (12) has a non-rotationally-symmetric aspheric surface for correcting eccentric aberration, and the diffractive optical element (13) includes a diffractive optical surface azo having a lattice structure that is as about an optical axis (Ax) of the optical system (100). The following condition is satisfied where ΔNe represents the refractive index difference of the diffractive optical surface (DM) in relation to the e-line (546.074 nm).
0.53>ΔNe>0.005 (1)
13 Citations
13 Claims
-
1. An optical system comprising a prism and a diffractive optical element;
- wherein
the prism has a non-rotationally-symmetric aspheric surface for correcting eccentric aberration; the diffractive optical element includes a diffractive optical surface having a lattice structure that is asymmetric about an optical axis of the optical system; and the following condition is satisfied where Δ
Ne represents the refractive index difference of the diffractive optical surface in relation to the e-line (546.074 nm).
0.53>
Δ
Ne>
0.005
(1) - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- wherein
Specification