Diffractive optical device

Details Diffractive optical device Diffractive optical device

1994-10-17

1996-10-01

Henry, Jon W.

Optical: systems and elements

Diffraction

From grating

359565, 359572, G02B 2742, G02B 518

Patent

active

055615589

ABSTRACT:
A diffractive optical device includes a substrate for allowing transmission therethrough of light to be diffracted; and a grating section located on the substrate and including a plurality of grating elements each having multiple discrete phase levels. The plurality of grating elements are arranged at different grating periods in different areas of a surface of the substrate and have the phase levels in different numbers in accordance with the grating period.

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patent: 5073007 (1991-12-01), Kedmi et al.
patent: 5218471 (1993-06-01), Swanson et al.
patent: 5227915 (1993-07-01), Grossinger et al.
patent: 5283690 (1994-02-01), Miyake et al.
patent: 5315676 (1994-05-01), Sunagawa
patent: 5377044 (1994-12-01), Tonono et al.
H. Haidner et al., "Design of a Blazed Grating Consisting of Metallic Subwavelength Binary Grooves", Optics Communications, pp. 5-10 vol. 98, No. 1-3 (Apr. 15, 1993).
J. Jahns et al., "Two-dimensional array of diffractive microlenses fabricated by thin film deposition", Applied Optics, vol. 29, No. 7, pp. 931-936 (Mar. 1990).
M. W. Farn, "Binary gratings with increased efficiency", Applied Optics, vol. 31, No. 22, pp. 4453-4458 (Aug. 1992).

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