Process for making microlens arrays and masterforms

Details Process for making microlens arrays and masterforms Process for making microlens arrays and masterforms

2011-08-23

2011-08-23

Ben, Loha (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S621000, C359S622000, C359S626000, C359S628000, C359S708000, C355S067000

Reexamination Certificate

active

08004767

ABSTRACT:
A process for making a microlens array or a microlens array masterform comprises(a) providing a photoreactive composition, the photoreactive composition comprising(1) at least one reactive species that is capable of undergoing an acid- or radical-initiated chemical reaction, and(2) at least one multiphoton photoinitiator system; and(b) imagewise exposing at least a portion of the composition to light sufficient to cause simultaneous absorption of at least two photons, thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light, the imagewise exposing being carried out in a pattern that is effective to define at least the surface of a plurality of microlenses, each of the microlenses having a principal axis and a focal length, and at least one of the microlenses being an aspherical microlens.

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