Method and apparatus for temporarily increasing the absorptance

Details Method and apparatus for temporarily increasing the absorptance Method and apparatus for temporarily increasing the absorptance

1982-10-18

1985-07-30

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351 44, 351158, G02F 101, G02C 710

Patent

active

045318140

ABSTRACT:
An electrochromic layer is applied to optical transmitting components, and electric-circuit connection to the layer enables temporary increase and decrease in the absorptance of the component. To increase the absorptance, a well-defined quantity of charge is supplied to the electrochromic layer; and to restore the initial condition, a well-defined quantity of charge is removed from the layer. Preferred fields of use are lenses, particularly eyeglass lenses, filters, and dimmable mirrors.

REFERENCES:
patent: 3630603 (1966-02-01), Letter

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