Progressive power ophthalmic lens having wide transition corrido

Details Progressive power ophthalmic lens having wide transition corrido Progressive power ophthalmic lens having wide transition corrido

1980-05-15

1982-12-07

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 706

Patent

active

043623689

ABSTRACT:
The lens of the present invention is a progressive power lens having a top portion for distance viewing and a bottom portion for close-up vision with a continuous transition corridor between the top and bottom portions. The lens is characterized by having a very wide transition corridor as contrasted with prior art lenses.

REFERENCES:
patent: 3711191 (1973-01-01), Tagnon
patent: 3785724 (1974-01-01), Cretin-Maitenaz
patent: 4253747 (1981-03-01), Maitenaz
patent: 4274717 (1981-06-01), Davenport
patent: 4307945 (1981-12-01), Kitchen et al.

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