Kowa LM25JC – 25mm F/1.6 Compact Lens

Kowa LM25JC – 25mm F/1.6 Compact Lens

25mm F/1.6 lens compatible with 2/3 Format sensor and 1/2 or 1/3 Format sensors with a reduced field of view. C-Mount compatible.


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Product Description

25mm F/1.6 Machine Vision Lens

The Kowa LM25JC is a 25mm F/1.6 lens designed for machine vision applications.  It features two (2) locking screws for aperture and focus rings to secure settings in dynamic environments.  Although designed for 2/3 Format sensors, it is also compatible with 1/2 and 1/3 Format sensor with a reduced field of view.  The lens features a standard C-Mount.

Kowa LM25JC Dimensions

Kowa LM25JC Details
Focal Length 25mm
Focal Length Sort Order 25
Lens Type Fixed Focal Length
Image Size 2/3" (8.8 x 6.6 x 11mm)
Iris Range (F-Stop) F1.6 - 16
Angle of View 1/2" (Hor. x Ver. x Dia.) 15.3 x 11.4 x 19.1°
Angle of View 1/1.8" (Hor. x Ver. x Dia.) 17.2 x 12.9 x 21.5°
Angle of View 2/3" (Hor. x Ver. x Dia.) 21.0 x 15.7 x 26.3°
TV Distortion -0.60%
Minimum Object Focus Distance (1/2") (Hor. x Ver. x Dia.) 52.0 x 38.9 x 65.3mm
Minimum Object Focus Distance (1/1.8") (Hor. x Ver. x Dia.) 58.7 x 43.8 x 73.8mm
Minimum Object Focus Distance (2/3") (Hor. x Ver. x Dia.) 72.1 x 53.7 x 91.1mm
Focusing Range 0.2m
Flange Back 17.526mm in air
Back Focus 10.3mm in air
Filter Thread Size M27x0.5
Front/Rear Effective Diameter Front Φ14.6mm / Rear Φ10.7mm
Mount C-mount
Exit Pupil Location -28.6mm
Temperature Range -10°C ~ +50°C
Storage Temperature Range -20°C ~ +60°C
Resolution: Center/Corner Center 100lp/mm / Corner 40lp/mm
Weight 55g
Original specifications were posted on
Kowa JC Series Brochure PDF 1.1M Download File
LM25JC Datasheet PDF 123k Download File
LM25JC CAD Drawing DXF 206k Download File
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