Ophthalmic lens with diffractive power

Details Ophthalmic lens with diffractive power Ophthalmic lens with diffractive power

1983-09-20

1987-02-10

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

350 372, 35016216, 350168, 350437, 351160R, 351161, 623 6, G02C 702, G02C 704, G02B 532, A61F 216

Patent

active

046419349

ABSTRACT:
An ophthalmic lens incorporates a transmission hologram which has negative diffractive power and introduces positive longitudinal chromatic aberration to add to the natural longitudinal chromatic aberration of the human eye, thereby reducing the need to accommodate. The lens also has refractive power to balance the diffractive power or to give a desired overall or residual power.

REFERENCES:
patent: 3004570 (1961-10-01), Ruhle
patent: 3339997 (1967-09-01), Wesley
patent: 3794414 (1974-02-01), Wesley
patent: 4073579 (1978-02-01), Deeg et al.
patent: 4162122 (1979-07-01), Cohen
patent: 4206518 (1980-06-01), Jardon et al.
patent: 4210391 (1980-07-01), Cohen
patent: 4338005 (1982-07-01), Cohen
patent: 4340283 (1982-07-01), Cohen
patent: 4377329 (1983-03-01), Poler
patent: 4402579 (1983-09-01), Poler
"The Leiske Physioflex Style 10 Anterior Chamber Lens: Surgide, Jan. 4, 1981, No. 3-31.

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