MINOLTA MD ROKKOR 45mm f/2 — Interactive Lens Diagram

Home / Lenses / Minolta / MINOLTA MD ROKKOR 45mm f/2MINOLTA MD ROKKOR 45mm f/2US 4,277,149 Example 7 — Minolta / Kunihiko Konoma
6 ELEMENTS / 5 GROUPS
f ≈ 45.0 mm
F/2.0
2ω ≈ 51.4°
ALL SPHERICAL
Focus MechanismUnit focus — entire optical assembly translates forward along the optical axis.
Optical Elements (6)ElementTypeGlass
L1Positive MeniscusLanthanum flint (781/445 class, Minolta proprietary; nearest: S-LAH52, OHARA)
L2Positive MeniscusLanthanum crown (750/501 class, Minolta proprietary; nearest: LAC14, HOYA)
L3Negative MeniscusDense flint (700/301 class, Minolta proprietary; nearest: FD4, HOYA / S-TIM25, OHARA)
L4Negative MeniscusMedium flint (640/353 class, Minolta proprietary; nearest: S-TIM28, OHARA)
L5Positive MeniscusLanthanum crown (755/501 class, Minolta proprietary; no exact catalog match — Δnd = +0.005 from nearest LAC14, HOYA)
L6Biconvex PositiveLanthanum crown (697/555 class, Minolta proprietary; nearest: LAC9, HOYA / S-LAL14, OHARA)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	Lanthanum flint (781/445 class, Minolta proprietary; nearest: S-LAH52, OHARA)
L2	Positive Meniscus	Lanthanum crown (750/501 class, Minolta proprietary; nearest: LAC14, HOYA)
L3	Negative Meniscus	Dense flint (700/301 class, Minolta proprietary; nearest: FD4, HOYA / S-TIM25, OHARA)
L4	Negative Meniscus	Medium flint (640/353 class, Minolta proprietary; nearest: S-TIM28, OHARA)
L5	Positive Meniscus	Lanthanum crown (755/501 class, Minolta proprietary; no exact catalog match — Δnd = +0.005 from nearest LAC14, HOYA)
L6	Biconvex Positive	Lanthanum crown (697/555 class, Minolta proprietary; nearest: LAC9, HOYA / S-LAL14, OHARA)