SONY VARIO-TESSAR T* E 16-70mm f/4 ZA OSS — Optical Cross-Section & Ray Tracing

Home / Lenses / Sony / SONY VARIO-TESSAR T* E 16-70mm f/4 ZA OSSSONY VARIO-TESSAR T* E 16-70mm f/4 ZA OSSUS 9,538,088 B2↗ — Tadashi Yanagisawa
16 ELEMENTS / 12 PHYSICAL GROUPS
6 FUNCTIONAL ZOOM GROUPS
16.48-67.90 mm DESIGN
F/4.12 DESIGN
6 ASPHERICAL SURFACES / 4 ASPHERICAL ELEMENTS
Focus MechanismCONSTRAINED_RECONSTRUCTION: patent-published GR5/L51-only axial focusing; close pairs are code-solved at Sony's 0.35 m sensor-plane MFD with fixed image plane and D25+D27=10.000 mm conserved at each zoom state.
Optical Elements (16 physical)ElementTypeGlass
L11Negative Meniscus847238 — dense flint class
L12Positive Meniscus620603 — dense crown class
L13Positive Meniscus729547 — lanthanum crown class
L21Neg. Meniscus (2× Asph)851401 — high-index low-dispersion molding-glass class
L22Biconcave NegativeNBFD10 (HOYA catalog-equivalent coefficient proxy; production supplier unspecified)
L23Biconvex Positive847238 — dense flint class
L24Neg. Meniscus (1× Asph)821427 — TAFD51-class (legacy/source coordinate)
L31Negative Meniscus904313 — very-high-index flint class
L32Biconvex Positive743492 — lanthanum flint class
L33Negative Meniscus806407 — dense flint class
L41Biconvex Positive (1× Asph)694532 — lanthanum crown class
L42Negative Meniscus911353 — very-high-index low-dispersion class
L43Biconvex Positive497816 — ED fluorophosphate class
L44Biconvex Positive618634 — phosphate crown class
L51Biconcave Negative (2× Asph)694532 — lanthanum crown class
L61Biconvex Positive517522 — crown-flint class

Element	Type	Glass
L11	Negative Meniscus	847238 — dense flint class
L12	Positive Meniscus	620603 — dense crown class
L13	Positive Meniscus	729547 — lanthanum crown class
L21	Neg. Meniscus (2× Asph)	851401 — high-index low-dispersion molding-glass class
L22	Biconcave Negative	NBFD10 (HOYA catalog-equivalent coefficient proxy; production supplier unspecified)
L23	Biconvex Positive	847238 — dense flint class
L24	Neg. Meniscus (1× Asph)	821427 — TAFD51-class (legacy/source coordinate)
L31	Negative Meniscus	904313 — very-high-index flint class
L32	Biconvex Positive	743492 — lanthanum flint class
L33	Negative Meniscus	806407 — dense flint class
L41	Biconvex Positive (1× Asph)	694532 — lanthanum crown class
L42	Negative Meniscus	911353 — very-high-index low-dispersion class
L43	Biconvex Positive	497816 — ED fluorophosphate class
L44	Biconvex Positive	618634 — phosphate crown class
L51	Biconcave Negative (2× Asph)	694532 — lanthanum crown class
L61	Biconvex Positive	517522 — crown-flint class