Method for making surface relief profilers

Details Method for making surface relief profilers Method for making surface relief profilers

1994-11-30

1996-11-19

Engel, James

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156220, 1562755, B32B 3100

Patent

active

055758789

ABSTRACT:
A method of multiple replication of a diffractive optical glass surface relief profiles into other glass-type substrates. For example, a malleable but hardenable layer formed on a glass substrate is embossed with a stamper having a reverse image of the optical glass surface relief profile, to result in a high quality copy of the original diffractive glass surface relief profile. The embossed layer is hardened and separated from the stamper. The hardened layer having the embossed surface relief profile is, for instance, etched down such that the surface relief profile is etched in to the surface of the glass substrate. The result of this method is a readily producible and very durable glass or like-material accurate replica, having high fidelity and being capable of providing high quality images, of another diffractive optical element.

REFERENCES:
patent: 4491486 (1985-01-01), Iwai
patent: 4512848 (1985-04-01), Deckman et al.
patent: 5279689 (1994-01-01), Shvartsman
H. Andersson et al., "Single photomask, multilevel in quartz and photoresist: manufacture and evaluation," Oct. 1, 1990, Applied Optics, vol. 29, No. 28, pp. 4259-4267.

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