Process for making a mold for the manufacture of microlenses

Details Process for making a mold for the manufacture of microlenses Process for making a mold for the manufacture of microlenses

1996-01-31

1999-03-02

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Including step of mold making

216 24, 216 26, 264 11, B29D 1100

Patent

active

058766421

ABSTRACT:
Preferential etching techniques are used to form a mold which can then be used to mold a microlens array. A mask (4.sub.i) made of a material which is resistant to a chemical composition for etching the plate is formed on a substrate, so that the mask is in the form of a grid with generally polygonal meshes each centered over one of the desired cells. The sides of each cell of the mask has outgrowths (5.sub.j) extending towards the center of desired cells. The substrate is subjected to the etching composition.

REFERENCES:
patent: 5300263 (1994-04-01), Hoopman et al.
patent: 5575962 (1996-11-01), Takahashi
D. Daly, R.F. Stevens, M.C. Hutley, N. Davies, "The manufacture of microlenses by melting photoresist", Measurement of Science and Technology, Aug. 1, 1990, No. 8, Bristol, GB, pp. 759-766.

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