Educational lens

Details Educational lens Educational lens

1994-07-08

1996-05-07

Sugarman, Scott J.

Optical: systems and elements

Lens

Fluid

G02B 312

Patent

active

055152031

ABSTRACT:
A collapsible lens designed to be used as an educational device is constructed from a pouch of polyethylene plastic that is shaped to form a convex lens when filled with water. The pouch has an edge region positioned adjacent and coextensive with a portion of the radial periphery of the pouch. The edge region has an inlet and outlet opening for use in filling and emptying the lens. The openings are closed by a channel-lock seam.

REFERENCES:
patent: 4585457 (1986-04-01), Kalb
patent: 4822360 (1989-04-01), Deacon
patent: 4888012 (1989-12-01), Horn et al.
patent: 5091121 (1992-02-01), Nakada et al.

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