SCHNEIDER-KREUZNACH TELE-XENAR 180mm f/4.5

DE 471565 C — Albrecht Wilhelm Tronnier

5 ELEMENTS / 3 GROUPS
f = 179.95 mm MODELED
f/4.5
ALL-SPHERICAL

Focus Mechanism

This static infinity-focus prescription has no published finite-focus spacings or minimum focus distance.

Optical Elements (5 physical)

ElementTypeGlass
L1Biconvex PositiveUnmatched (BK7/BSL7-class coordinate; historical yellow-ray source; supplier unconfirmed)
L2Biconcave NegativeUnmatched (F2/PBM2-class coordinate; historical yellow-ray source; supplier unconfirmed)
L3Negative MeniscusUnmatched (BK7/BSL7-class coordinate; historical yellow-ray source; supplier unconfirmed)
L4Positive MeniscusUnmatched (SF2/H-ZF1A-class coordinate; historical yellow-ray source; supplier unconfirmed)
L5Positive MeniscusUnmatched (source yellow-ray n=1.5250, v=62.3)