CUPRITE F2.8/50 mm
SWIR lens

Key features

Optimized for 800 - 1800 nm
For sensor sizes up to 25.4mm
High resolution optics
Compact and robust mechanics

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Lenses
SWIR lenses
CUPRITE
CUPRITE 2.8/50 C

The high-resolution SWIR C-Mount lens (800-1800 nm) with 25.4mm image circle and robust design that offers anti-stray light features for demanding environments.

This high resolution C-Mount SWIR lens with 25.4mm image circle is designed for the 800 - 1800 nm spectral range. With its robust mechanical design and locking screws for focus and iris it maintains its high optical imaging performance even in harsh environment. A special SWIR coating and internal lacquering reduces stray light, resulting in a high contrast images. Typical applications: Solar cell inspection, Food sorting, Agriculture observation, Geology analysis.

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Datasheet

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Product sheet

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Product brochure 2024

Technical specifications: CUPRITE F2.8/50 mm C-Mount

Type [standard]	C
ID [standard]	1088501
Interface	C-Mount
Focal length [mm]	50
Aperture range F/#	F/2.8 ... F/16
Numerical aperture [object \| image]	- \| 0.09
Maximum sensor size [mm]	25.4
Maximum angle of view [°]	28
Recommended magnification range	-0.2 ... 0
Recommended working distance range [mm]	262 ... ∞
Minimum working distance without extension tubes [mm]	100
Filter thread [mm]	M43 x 0.75
Storage temperature [°C]	-25 … +70
Net weight [g]	418
Additional info	-
f'eff [mm]	50.74
SF [mm]	-11.82
S'F' [mm]	33.97
HH' [mm]	-9.94
ß'P	1.25
SEP [mm]	28.71
S'AP [mm]	-29.56
Σd [mm]	45.75

Lens specifications glossary

Specification	Description
Focal length	Nominal focal length
Aperture range F/#	Image space F-number range for infinity focus position
Numerical aperture	Maximum real numerical aperture (depending on recommended magnification range either for infinity or respective fixed magnification)
Max. sensor size	Image circle diameter
Max. angle of view	Angle of view associated with maximum sensor size (depending on recommended magnification range either for infinity or respective fixed magnification)
Rec. magnification range	Magnification range as recommended by Schneider-Kreuznach
Rec. working distance range	Working distance, i.e. distance between object and first mechanical element, associated with recommended magnification range
Net weight	weight of unpacked lens without lens cap
f'eff	Effective focal length
SF	Distance between vertex of first lens surface and object space focal point
S'F'	Distance between vertex of last lens surface and image space focal point (back focal distance at infinity)
HH'	Distance between principal planes
ß'P	Pupil magnification (= exit pupil diameter / entrance pupil diameter)
SEP	Distance between vertex of first lens surface and entrance pupil
S'AP	Distance between vertex of last lens surface and exit pupil
Σ d	Distance between vertices of first and last lens surface
s'A	Flange focal distance (in air) for infinite object distance (depending on recommended magnification range either for infinity or respective fixed magnification)
ß'	Magnification (= image size / object size), negative value because image is inverted
OO'	Distance between object and image
Info	Unless otherwise stated all dimensions in this data sheet are in mm

Picture of the lens

Technical drawing

Relative illumination vs. image height

Distortion vs. image height

Transmittance vs. wavelength

MTF charts

Spectrum name	SWIR
Wavelengths [nm]	920	1070	1220	1370	1520	1670
Rel. weights [%]	16.9	18.2	17.7	17.1	15.9	14.2

Accessories for the CUPRITE F2.8/50 mm C-Mount lens

Maximise the potential of your industrial lens with our high-quality accessories including camera adapters, extension tubes, filter holders and UNIFOC.

ID

25081

Adapter
C/CS 5 mm

ID

1075817

Adapter
C/M42x1 5.5 mm

ID

39316

Extension tube
C/C 5 mm

ID

39315

Extension tube
C/C 8 mm

ID

39312

Extension tube
C/C 10 mm

OTHER CUPRITE Lenses

CUPRITE 2.8/50 V48

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55543 Bad Kreuznach | Germany
+49 (0) 671 601 0

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CUPRITE F2.8/50 mm SWIR lens