Specialist Camera Solutions


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PART NUMBER                           DESCRIPTION                          DATASHEET       MOUNT       HORIZONTAL FOV


                                         Megapixel HD Prime Lenses


      SY125-M            1.28mm 5MP F1.8 Manual Iris Lens *                                                                CS-mount          125° (1/3")


      SY125-A             1.28mm 5MP F1.8 Auto Iris Lens *                                                                    CS-mount          125° (1/3")


      MY125-M            1.28mm 5MP F1.8 Manual Iris Lens *                                                                  C-mount            125° (1/3")


      SY110-M            1.67mm 3MP F1.8 Manual Iris "Day/Night" Lens *                                             CS-mount           110° (1/3")


      SY110-A             1.67mm 3MP F1.8 Auto Iris "Day/Night" Lens *                                                  CS-mount           110° (1/3")


      MY110-M            1.67mm 3MP F1.8 Manual Iris "Day/Night" Lens *                                              C-mount            110° (1/3")

Theia Prime Lenses


SeeSense staff have 20+ years experience in the specification and technical sales of of C and CS-mount lenses.

We offer a specialist services advising about and specifying C and CS-mount lenses for a wide

variety of applications.  Please Contact Us if you require help in finding a suitable lens.

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Find out about our lens partners by clicking the links below.

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SeeSense have been working with and specifying Theia Technologies C-mount and CS-mount lenses for many years.  We know their products well and we can recommend them for the great results they produce.


The list below show the full range of Prime lenses available from Theia Technologies.

Please contact us for any specific lens requirements you might have.

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Rectilinear Lenses

Theia Techonologies range of ultra wide angle lenses incorporates patented Linear Optical Technology® that permits an ultra wide field of view whilst optically correcting barrel distortion in the lens.  This optical correction increases the image resolution at the edges and corners of the picture and remove the need for dewarping software.

These lenses are widely offered by SeeSense for Broadcast applications where a wide angle, low distortion and a sharp image is desired.  In Security applications these lenses improve the probability of detection and identification of individuals, especially at the image edge.  

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* These lenses utilise Linear Optical Technology®.  The rectilinear design of the lens means

  that the image will be inverted.  Mount camera upside down or invert image electronically.

<Back to Theia Theia Varifocals>

Theia Technologies produce a special range of ultra wide angle low distrtion lenses mainly intended for megapixel Security and Machine Vision applications.  However these lenses can also be used in a variety of other applications including Broadcast / Film / Medical / Industrial, etc .  SeeSense regularly specifies and recommends Theia Technologies HD and 4K Megapixel varifocal lenses for use with its ranges of 4K and High Definition 1-CMOS C-mount and CS-mount cameras.