Multifocals using phase shifting

Details Multifocals using phase shifting Multifocals using phase shifting

1986-05-14

1991-05-21

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

35016216, 35016220, 35016222, 35016223, 350437, 350452, 351159, 351168, 351171, 623 6, G02B 2744, G02B 518, G02C 704, A61F 216

Patent

active

050170007

ABSTRACT:
This invention relates to a multifocal optical lens configuration that relies on the phenomenon of simultaneous vision whereby the eye is presented with two clear images at once. In particular this invention allows a lens to be made with arbitrary relative brighnesses between the multiple images.

REFERENCES:
patent: 4016416 (1977-04-01), Shepherd, Jr. et al.
patent: 4210391 (1980-07-01), Cohen
patent: 4338005 (1982-07-01), Cohen
patent: 4340283 (1982-07-01), Cohen
patent: 4637697 (1987-01-01), Freeman
Genovese et al.; "Phase Plate Lens for a Multiple Image Lens System"; IBM Tech. Discl. Bulletin; vol. 8, No. 12; May 1966; pp. 1796-1797.

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