Theia 4K lens SL940P with variable focal length 4-10mm, as CS mount

Item number: A10464

EAN: 4260521253255

High resolution Theia 4K lens with 4-10mm focal length
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329,80 €

including 19% VAT., no shipping costs

Available now! (Shipping time: 1 - 2 workdays*)

Theia SL940P 4K compatible varifocal telephoto lens can be used for remote surveillance and license plate recognition.

It is designed for sensors such as 1/2.5" 5MP and 1/2.3" 4K resolution.

Excellent IR correction allows day/night operation without the need to refocus when switching to IR illumination.

The lens can be adjusted for focal lengths from 9-40mm, ensuring the right image details.



Theia SL940P mit 9mm Brennweite     Theia Objektiv SL940P mit 40mm Brennweite

                                     Theia SL940P with 9mm focal length                                                                                    Theia SL940P with 40mm focal length


Similar to Theia's other lenses, the SL940P is a high-quality lens that allows installers to take full advantage of the high resolution of HD and multi-megapixel cameras. The lens can be used on cameras with resolutions up to five megapixels and provides a sharp image from edge to edge.

The lens is IR corrected for use with true day/night cameras. This IR correction focuses IR light from artificial lighting to the same plane as visible light, so the image remains sharp when the day/night camera switches to night mode, unlike lenses without IR that require refocusing.


Features of the Theia SL940P:

- 9-40mm for long range and field of view optimization

- Supports multi-megapixel resolution cameras for demanding applications with five megapixels or more

- Compact design for installation in dome cameras up to 4" mini-dome size

- IR-corrected for true day/night cameras

- CS mount with slip ring for easy installation and positioning

- For 1/3", 1/2.7" HD, 1/2.5" and 1/2.3" 4K* sensors

- Designed with DC auto iris, P-Iris (precise iris) and manual iris

Technical details

Focal length: 9mm - 40mm

Lens type: Variable focal length

Aperture: F/1.5 to closed

Iris control: P-Iris

Resolution: Up to 5 megapixels, 4K compatible

Horizontal angle of view: 36 - 8.5 °

Day/night use: Yes, IR corrected

Nominal format: 1/2.5

Thread: CS mount


Please find additional documentation here:

Data sheet

User manual

Photos & videos

Please find additional photos and videos:

Theia tele lens SL940P with p-iris, 50mm focal length  Theia tele lens SL940P with p-iris 12mm focal length

Theia tele lens SL940P comparing 9mm and 40mm



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