50mm C-Mount lens for up to 20MP 1.1" Sensors
50mm C-Mount Lens 1.1" 20MP+
The CIL546 is a 50mm C-Mount lens for 1.1" 20MP+ sensors with 2.74um pixel pitch such as the IMX540. The F/2.8 can be adjusted to F/16. The lens has a minimum working distance of 250mm.
Lens Features
High Resolution
Suitable for 2.74um pixel pitch at F/2.8
Optical and Mechanical Specification Table
| Lens Parameter | Performance Detail |
|---|---|
| Part Number | CIL546 |
| EFL | 50.0 |
| F# | 2.8 |
| Field of View | 20° @ 17.6mm — Calculate FoV for your sensor |
| Distortion | 0.0007 |
| Weight | 127g |
| Construction | All Glass |
Mechanical Layout
Frequently asked questions
What sensors does the CIL546 50mm C-mount lens support?
The CIL546 fits 1.1 inch sensors with 2.74µm pixel pitch at 20MP and above. It works well with the IMX540 and comparable area scan sensors, and the 17.6mm image circle fully covers the 1.1 inch format.
How much distortion does the CIL546 have?
Distortion measures 0.07%, which is effectively zero. You do not need software correction for most metrology, gauging, or precision measurement work at that level.
What is the CIL546 minimum working distance?
The minimum working distance is 250mm. The CIL546 is optimized from 250mm to infinity, so it works well in telephoto setups that need tight framing at distance.
Can I adjust the aperture on the CIL546 50mm lens?
Yes, the aperture adjusts from F/2.8 to F/16. Stopping down adds depth of field, but it costs you light, which is the usual tradeoff in parts inspection. You can use depth of field calculator to model your setup.
Does the CIL546 include a filter thread?
Yes, the CIL546 has an M35.5x0.5 filter thread. It accepts standard machine vision bandpass, polarization, and neutral density filters.
Does the CIL546 ship same day from the US?
Yes, Commonlands ships in-stock lenses same day from San Diego for orders placed before 12 PM PST. You can contact us for current CIL546 stock levels and volume pricing.
Similar C‑Mount Lenses: 4mm – 75 mm Industrial Optics
About Commonlands
Commonlands LLC designs and manufactures precision M12, C-mount, and M8 lenses for machine vision, robotics, and embedded camera systems. Based in San Diego, California, we stock inventory for same-day shipping and provide direct access to US-based optical engineers. Whether you need a single prototype lens or production volumes of 25,000+, our team supports the full lifecycle from optical design consultation through volume fulfillment.
Need help selecting the right lens for your camera module?
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