Spectacle lens with high positive refractive power

Details Spectacle lens with high positive refractive power Spectacle lens with high positive refractive power

1982-07-08

1985-03-12

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

350432, G02B 302, G02C 702

Patent

active

045041288

ABSTRACT:
A spectacle lens with a high positive refracting power, whose front surface has an aspheric, rotationally symmetric effective part. The effective part is configured in accordance with the following equation: ##EQU1## where z is the sagitta, h is the distance from the optical axis, C is determined by the desired refracting power of the front surface at the vertex, and K and I.sub.i are aspheric coefficients. The aspheric coefficients K and I.sub.i are determined so that either the visual acuity V is a maximum or .vertline..DELTA.R.vertline.+.vertline..DELTA.S.vertline. is a minimum. The lens produces a pattern of aberration which allows complete utilization of the visual field for dynamic vision.

REFERENCES:
patent: 3169247 (1965-02-01), Davis et al.
patent: 4073578 (1978-02-01), Welsh
patent: 4181409 (1980-01-01), Whitney et al.

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