RODENSTOCK APO-SIRONAR-W 150mm f/5.6 — Optical Cross-Section & Ray Tracing

Home / Lenses / Rodenstock / RODENSTOCK APO-SIRONAR-W 150mm f/5.6RODENSTOCK APO-SIRONAR-W 150mm f/5.6DE 3,907,928 A1↗ — Ernst Rothe, Josef Weiß
150mm marketed / 148.7mm design
f/5.6
8 elements / 5 groups in reconstructed table
80° published field
all-spherical
Focus MechanismUnit focus on a view-camera bellows; close endpoint is an illustrative 3.5 m object distance, not a manufacturer minimum-focus specification.
Optical Elements (8 physical)ElementTypeGlass
L1Positive MeniscusUnmatched (520642 patent-rounded crown; no unique catalog identity)
L2Positive MeniscusN-PSK53A class (Schott equivalent; patent-rounded nd/vd)
L3Negative MeniscusUnmatched (dense lanthanum/barium flint class; patent-rounded nd=1.69, vd=49.6)
L4Positive MeniscusK10 class (Schott equivalent; patent-rounded nd/vd)
L5Positive MeniscusCaF2 class (inferred; EFL-reconciled Table 5 model)
L6Positive MeniscusUnmatched (460658 patent-rounded fluor-crown; no unique catalog identity)
L7Positive MeniscusUnmatched (650396 patent-rounded short flint; no unique catalog identity)
L8Plano-Concave NegativeUnmatched (dense crown / short-flint class; patent-rounded nd=1.62, vd=53.2)

Element	Type	Glass
L1	Positive Meniscus	Unmatched (520642 patent-rounded crown; no unique catalog identity)
L2	Positive Meniscus	N-PSK53A class (Schott equivalent; patent-rounded nd/vd)
L3	Negative Meniscus	Unmatched (dense lanthanum/barium flint class; patent-rounded nd=1.69, vd=49.6)
L4	Positive Meniscus	K10 class (Schott equivalent; patent-rounded nd/vd)
L5	Positive Meniscus	CaF2 class (inferred; EFL-reconciled Table 5 model)
L6	Positive Meniscus	Unmatched (460658 patent-rounded fluor-crown; no unique catalog identity)
L7	Positive Meniscus	Unmatched (650396 patent-rounded short flint; no unique catalog identity)
L8	Plano-Concave Negative	Unmatched (dense crown / short-flint class; patent-rounded nd=1.62, vd=53.2)