LEICA SUMMILUX-TL 35mm f/1.4 ASPH. — Optical Cross-Section & Ray Tracing

Home / Lenses / Leica / LEICA SUMMILUX-TL 35mm f/1.4 ASPH.LEICA SUMMILUX-TL 35mm f/1.4 ASPH.EP 3 029 504 A1↗ — Keiko Yamada
12 ELEMENTS / 8 GROUPS
DESIGN EFL 34.43 mm
MODELED f/1.446
44.8° FULL FIELD
4 ASPHERICAL SURFACES
Focus MechanismPUBLISHED inner focus: the single negative Gr2 element L21 moves 7.10 mm imageward from infinity (D14=2.29 mm, D16=12.12 mm) to the patent POS2 state at 306 mm from source surface 1 (D14=9.39 mm, D16=5.02 mm). The corresponding source object-to-image distance is approximately 0.4008 m; interpolation between endpoints is not a published mechanical trajectory.
Optical Elements (12 physical)ElementTypeGlass
L11Positive MeniscusNBFD10 class (coordinate-compatible spectral proxy; native d 1.834/37.35; supplier/melt unproven)
L12Positive MeniscusPBH21 class (coordinate-compatible spectral proxy; coordinate code 923209; supplier/melt unproven)
L13Negative MeniscusE-CF6 class (coordinate-compatible spectral proxy; coordinate code 517522; supplier/melt unproven)
L14Biconvex PositiveTAFD5F class (coordinate-compatible spectral proxy; coordinate code 835427; supplier/melt unproven)
L15Biconcave NegativeE-FD4 class (coordinate-compatible spectral proxy; coordinate code 755275; supplier/melt unproven)
L16Biconcave NegativeE-FD8 class (coordinate-compatible spectral proxy; coordinate code 689312; supplier/melt unproven)
L17Biconvex PositiveTAC8 class (coordinate-compatible spectral proxy; coordinate code 729547; supplier/melt unproven)
L18Biconvex Positive (2× Asph)S-LAM60 class (coordinate-compatible spectral proxy; coordinate code 743493; supplier/melt unproven)
L21Negative Meniscus (2× Asph)S-LAM60 class (coordinate-compatible spectral proxy; coordinate code 743493; supplier/melt unproven)
L31Biconvex PositiveTAFD33 class (coordinate-compatible spectral proxy; coordinate code 881401; supplier/melt unproven)
L32Biconvex PositiveTAFD5F class (coordinate-compatible spectral proxy; coordinate code 835427; supplier/melt unproven)
L33Biconcave NegativeH-ZF1 class (coordinate-compatible spectral proxy; coordinate code 648338; supplier/melt unproven)

Element	Type	Glass
L11	Positive Meniscus	NBFD10 class (coordinate-compatible spectral proxy; native d 1.834/37.35; supplier/melt unproven)
L12	Positive Meniscus	PBH21 class (coordinate-compatible spectral proxy; coordinate code 923209; supplier/melt unproven)
L13	Negative Meniscus	E-CF6 class (coordinate-compatible spectral proxy; coordinate code 517522; supplier/melt unproven)
L14	Biconvex Positive	TAFD5F class (coordinate-compatible spectral proxy; coordinate code 835427; supplier/melt unproven)
L15	Biconcave Negative	E-FD4 class (coordinate-compatible spectral proxy; coordinate code 755275; supplier/melt unproven)
L16	Biconcave Negative	E-FD8 class (coordinate-compatible spectral proxy; coordinate code 689312; supplier/melt unproven)
L17	Biconvex Positive	TAC8 class (coordinate-compatible spectral proxy; coordinate code 729547; supplier/melt unproven)
L18	Biconvex Positive (2× Asph)	S-LAM60 class (coordinate-compatible spectral proxy; coordinate code 743493; supplier/melt unproven)
L21	Negative Meniscus (2× Asph)	S-LAM60 class (coordinate-compatible spectral proxy; coordinate code 743493; supplier/melt unproven)
L31	Biconvex Positive	TAFD33 class (coordinate-compatible spectral proxy; coordinate code 881401; supplier/melt unproven)
L32	Biconvex Positive	TAFD5F class (coordinate-compatible spectral proxy; coordinate code 835427; supplier/melt unproven)
L33	Biconcave Negative	H-ZF1 class (coordinate-compatible spectral proxy; coordinate code 648338; supplier/melt unproven)