KINOPTIK TEGEA 9.8mm f/1.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Kinoptik / KINOPTIK TEGEA 9.8mm f/1.8KINOPTIK TEGEA 9.8mm f/1.8US 3,037,426↗ — Edgard Hugues
27.20 mm FORMAT DIAGONAL
9 ELEMENTS / 6 GROUPS
MODEL EFL ≈ 9.784 mm; PATENT f = 9.759 mm
MODEL f/2; MARKETED f/1.8
2ω = 110° (PATENT)
1 ASPHERICAL SURFACE
Focus MechanismNot modeled; the patent supplies only the infinity prescription.
Optical Elements (9 physical)ElementTypeGlass
L7Plano-Parabolic Negative (1× Asph)N-LAK9-class (coordinate-compatible spectral proxy; supplier unproven)
L8Biconvex PositiveUnmatched (nd=1.68129, vd=32.0; dense-flint region)
L9Negative MeniscusUnmatched (nd=1.67400, vd=56.0)
L10Biconvex PositiveFK3-class (coordinate-compatible spectral proxy; supplier unproven)
L11Biconcave NegativeS-BAH28-class (coordinate-compatible spectral proxy; supplier unproven)
L12Plano-Convex PositiveFK3-class (coordinate-compatible spectral proxy; supplier unproven)
L13Biconvex PositiveNSL7-class (coordinate-compatible spectral proxy; supplier unproven)
L14Negative MeniscusPBH25-class (coordinate-compatible spectral proxy; supplier unproven)
L15Biconvex PositiveNSL7-class (coordinate-compatible spectral proxy; supplier unproven)

Element	Type	Glass
L7	Plano-Parabolic Negative (1× Asph)	N-LAK9-class (coordinate-compatible spectral proxy; supplier unproven)
L8	Biconvex Positive	Unmatched (nd=1.68129, vd=32.0; dense-flint region)
L9	Negative Meniscus	Unmatched (nd=1.67400, vd=56.0)
L10	Biconvex Positive	FK3-class (coordinate-compatible spectral proxy; supplier unproven)
L11	Biconcave Negative	S-BAH28-class (coordinate-compatible spectral proxy; supplier unproven)
L12	Plano-Convex Positive	FK3-class (coordinate-compatible spectral proxy; supplier unproven)
L13	Biconvex Positive	NSL7-class (coordinate-compatible spectral proxy; supplier unproven)
L14	Negative Meniscus	PBH25-class (coordinate-compatible spectral proxy; supplier unproven)
L15	Biconvex Positive	NSL7-class (coordinate-compatible spectral proxy; supplier unproven)