SONY DT 16-50mm f/2.8 SSM — Optical Cross-Section & Ray Tracing

Home / Lenses / Sony / SONY DT 16-50mm f/2.8 SSMSONY DT 16-50mm f/2.8 SSMUS 2012/0307129 A1↗ — Hideki Kai, Makoto Kanai
16 ELEMENTS / 13 GROUPS
PATENT f = 16.48-48.50 mm
F/2.89 DESIGN (f/2.8 MARKETED)
85.5°-33.0° PATENT FULL FIELD
2 COMPOUND ASPHERES / 3 INFERRED ED ELEMENTS
Focus MechanismCONSTRAINED_RECONSTRUCTION: the patent publishes GR2-only close-range focusing but no close-focus spacing table. At each zoom position, only GR2 translates; D5 + D15 is conserved, GR1/GR3/GR4/STO/IMG stay fixed, and the close pairs are code-solved for a 0.300 m sensor-plane object distance. Tele |m| = 0.194595x; these rows are not patent-published focus data.
Optical Elements (16 physical; 18 modeled media)ElementTypeGlass
G1Negative MeniscusJ-SF03 catalog equivalent (patent class 847237; production supplier unspecified)
G2Biconvex PositiveN-LASF44 (SCHOTT catalog equivalent; production supplier unspecified; patent class 804465)
G3Positive MeniscusN-LASF44 (SCHOTT catalog equivalent; production supplier unspecified; patent class 804465)
G4rHybrid Asphere LayerUnmatched (compound-asphere layer; material unspecified by patent)
G4Negative MeniscusK-LaSFn23 (SUMITA catalog equivalent; production supplier unspecified; patent class 911352)
G5Biconcave NegativeS-LAH58 (OHARA catalog equivalent; production supplier unspecified; patent class 883408)
G6Biconvex PositiveE-FD2 (HOYA catalog equivalent; production supplier unspecified; patent class 648338)
G7Biconcave NegativeJ-LASF016 (HIKARI catalog equivalent; production supplier unspecified; patent class 773496)
G8Biconvex PositiveJ-SF03 (HIKARI catalog equivalent; production supplier unspecified; patent class 847238)
G9Biconvex PositiveNBFD13 (HOYA catalog equivalent; production supplier unspecified; patent class 806407)
G10Positive MeniscusH-FK61 (CDGM catalog equivalent; production supplier unspecified; patent class 497816)
G11Biconcave NegativeS-LAH55 (OHARA catalog equivalent; production supplier unspecified; patent class 835427)
G12Biconvex PositiveH-FK61 (CDGM catalog equivalent; production supplier unspecified; patent class 497816)
G13Biconcave NegativeN-LASF46B (SCHOTT catalog equivalent; production supplier unspecified; patent class 904313)
G13rHybrid Asphere LayerUnmatched (compound-asphere layer; material unspecified by patent)
G14Biconcave NegativeJ-SF03 (HIKARI catalog equivalent; production supplier unspecified; patent class 847238)
G15Biconvex PositiveH-FK61 (CDGM catalog equivalent; production supplier unspecified; patent class 497816)
G16Biconvex PositiveE-F2 (HOYA catalog equivalent; production supplier unspecified; patent class 620363)

Element	Type	Glass
G1	Negative Meniscus	J-SF03 catalog equivalent (patent class 847237; production supplier unspecified)
G2	Biconvex Positive	N-LASF44 (SCHOTT catalog equivalent; production supplier unspecified; patent class 804465)
G3	Positive Meniscus	N-LASF44 (SCHOTT catalog equivalent; production supplier unspecified; patent class 804465)
G4r	Hybrid Asphere Layer	Unmatched (compound-asphere layer; material unspecified by patent)
G4	Negative Meniscus	K-LaSFn23 (SUMITA catalog equivalent; production supplier unspecified; patent class 911352)
G5	Biconcave Negative	S-LAH58 (OHARA catalog equivalent; production supplier unspecified; patent class 883408)
G6	Biconvex Positive	E-FD2 (HOYA catalog equivalent; production supplier unspecified; patent class 648338)
G7	Biconcave Negative	J-LASF016 (HIKARI catalog equivalent; production supplier unspecified; patent class 773496)
G8	Biconvex Positive	J-SF03 (HIKARI catalog equivalent; production supplier unspecified; patent class 847238)
G9	Biconvex Positive	NBFD13 (HOYA catalog equivalent; production supplier unspecified; patent class 806407)
G10	Positive Meniscus	H-FK61 (CDGM catalog equivalent; production supplier unspecified; patent class 497816)
G11	Biconcave Negative	S-LAH55 (OHARA catalog equivalent; production supplier unspecified; patent class 835427)
G12	Biconvex Positive	H-FK61 (CDGM catalog equivalent; production supplier unspecified; patent class 497816)
G13	Biconcave Negative	N-LASF46B (SCHOTT catalog equivalent; production supplier unspecified; patent class 904313)
G13r	Hybrid Asphere Layer	Unmatched (compound-asphere layer; material unspecified by patent)
G14	Biconcave Negative	J-SF03 (HIKARI catalog equivalent; production supplier unspecified; patent class 847238)
G15	Biconvex Positive	H-FK61 (CDGM catalog equivalent; production supplier unspecified; patent class 497816)
G16	Biconvex Positive	E-F2 (HOYA catalog equivalent; production supplier unspecified; patent class 620363)