Wide angle zoom lens

Details Wide angle zoom lens Wide angle zoom lens

1982-06-24

1985-09-10

Corbin, John K.

350432, G02B 1318, G02B 1514

Patent

active

045402493

ABSTRACT:
A wide angle zoom lens comprising, in succession from the object side, a divergent lens group and a convergent lens group and in which magnification change is effected by relative movement of the two groups is characterized in that the divergent lens group has a positive lens and at least one negative lens formed of a low-index high-dispersion material having a refractive index of 1.5 or less and an Abbe number of 62 or less.

REFERENCES:
patent: 4153339 (1979-01-01), Tajima et al.
patent: 4159865 (1979-07-01), Kawamura et al.
patent: 4333711 (1982-06-01), Itoh et al.
patent: 4364641 (1982-12-01), Mogami
patent: 4400064 (1983-08-01), Ikemori et al.

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