Diffractive optical system

Details Diffractive optical system Diffractive optical system

2006-08-01

2006-08-01

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Diffraction

From zone plate

C359S566000, C359S569000

Reexamination Certificate

active

07085055

ABSTRACT:
The invention relates to a diffractive optical system having a two-dimensional structure, which can be used as a phase shift mask for the fabrication of an optical element having a two-dimensional fine periodic structure, and a two-dimensional light beam splitter. The diffractive optical system10comprises a transparent substrate surface1that is divided in alignment with orthogonal two directions into minuscule square cell groups2, 3of the same shape in a checked pattern. The square cells that give a phase 2pπ and a phase {(2q+1)π±δπ} where 0≦δ≦0.25 and p and q are each an integer with respect to reference-wavelength light striking vertically on the transparent substrate surface1are alternately arranged in each direction, and the phase 2pπ-giving square cells and the phase {(2q+1)π±δπ}-giving square cells are located in such a way as to be in alignment with 45° diagonal directions of said two directions.

REFERENCES:
patent: 5208629 (1993-05-01), Matsuo et al.
patent: 6577403 (2003-06-01), Primot et al.
patent: 2002/0135847 (2002-09-01), Nagasaka et al.

Affiliated with

Also associated with

Rating

Diffractive optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diffractive optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffractive optical system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3647921