M12 Lenses are miniature lenses for embedded cameras, computer vision, and human viewing...
Professional optics for automated optical inspection and robotics. High-resolution M12 and C-mount designs with documented optical performance at their specified working distances.
Need a compact lens for board-level or embedded vision? Browse the M12 lens collection, which spans wide-angle to telephoto focal lengths, including finite-conjugate designs built for short working distances such as the Telephoto 14.2mm M12 Lens (CIL142, 14.4mm EFL) and the CIL121 21.8mm M12 lens.
MTF characterization quantifies the contrast a lens transmits across the image field. Engineers evaluate MTF at multiple field positions to confirm resolution holds from center to corner, critical for reliable defect detection.
Production lines require predictable optical performance across varying conditions. Use our field of view calculator to determine optimal focal length for your sensor and working distance requirements.
C-mount designs have room for more elements and a larger clear aperture, which gives a designer more freedom to flatten the field on a large sensor. Corner MTF follows the prescription and the design target, not the mount diameter or the element count: an M12 design can be complex and well corrected, and a C-mount lens can be poorly corrected.
The standardized 17.526mm flange distance enables flexible system design with interchangeable lenses. Calculate your required depth of field to ensure adequate focus range for three-dimensional inspection applications.
High-resolution optics for Industry 4.0 applications
M12 lenses are smaller and lighter than C-mount alternatives, which matters for embedded vision and robotics. The M12x0.5 thread is standardized in diameter and pitch, so lenses and holders interchange, but retention under vibration depends on holder height, thread fit, locking torque, the barrel shoulder, and any thread-locking compound rather than on the standard itself.
Board-level integration benefits from M12's compact threaded-barrel design. With no fixed flange standard, back focus is set by thread depth, so the sensor can sit as close as the design allows. Total track length still follows the optical prescription, the back focal length it needs, the barrel, and the sensor stack, so an adjustable thread does not by itself shorten the optical package. Wide-angle M12 designs achieve extensive field coverage for area monitoring in space-constrained applications.
Industry 4.0 systems require lenses with documented optical characteristics for computational imaging. Precise distortion mapping enables software correction algorithms. Our FOV calculator helps optimize multi-camera coverage.
Robotic guidance applications benefit from lenses with predictable geometric projection. Fixed focal length designs provide consistent magnification relationships, while macro lenses enable detailed inspection at close working distances.
Modulation Transfer Function testing evaluates how well a lens preserves contrast from object to image. Machine vision applications benefit from lenses with characterized, sufficiently uniform MTF across the sensor, which supports reliable automated inspection.
At comparable cost and size, fixed focal length lenses typically provide better optical performance, mechanical stability, and repeatability than zoom lenses. They maintain consistent calibration essential for precision measurement applications.
Not because of the mount. A C-mount barrel has room for more elements and a larger clear aperture, so a designer has more freedom to flatten the field on a large format sensor. Corner sharpness and illumination uniformity still come from the prescription and the design target, and an M12 design can be complex and well corrected while a C-mount lens can be poorly corrected. Compare published MTF at the field heights that matter to your application.
Common formats include 1/3", 1/2", 2/3", and 1" sensors. Match lens image circle to sensor diagonal to prevent vignetting. Performance still varies across the field, so review corner MTF specifications as well.
Working distance determines required focal length for desired field of view. Use our calculators to determine optimal focal length and depth of field for your application requirements.
90-200° FOV for area monitoring and robot navigation
Close-focus designs for detailed component inspection
Optimized for 5-20MP sensors with minimal distortion
F1.4-F2.0 for high-speed inspection applications
Minimal geometric distortion for measurement accuracy
Environmental sealing for harsh industrial conditions
