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Theia Technologies SY110A 1.7mm, 1/2.5, f1.8, Auto-Iris, 120 degree Lens, Day/Night, 5 Megapixel, 2yr warranty


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Theia Technologies SY110A 1.7mm, 1/2.5, f1.8, Auto-Iris, 120 degree Lens, Day/Night, 5 Megapixel, 2yr warranty SKU: SY110A

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Theia's 110 series lenses provide ultra wide field of view without distortion. The lenses incorporate Theia's patented Linear Optical Technology® which allows an ultra wide field of view without barrel distortion found in other wide angle lenses not including Theia's technology. This rectilinear design allows increased resolution at the edges of the image thus increasing the probability of detection in security systems. The rectilinear design also eliminates the dewarping software requirement for many machine vision applications, improving MV system performance.

Similar to Theia's other lenses, the 110 series is a high quality lens designed to allow the installer to take full advantage of the high resolution of HD and multi megapixel cameras. The lens can be used on cameras up to five megapixel resolution giving a crisp 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 illumination at the same plane as the visible light allowing the image to remain in focus when the Day/Night camera switches to night mode. Unlike lenses without IR correction, the night image will not be out of focus when using IR illumination.





Lens model SY110A SY110M
Iris type DC autoiris Manual iris
Focal Length
(field of view)
using Linear Optical Technology®
IR correction IR corrected for Day/Night cameras
Mount type CS-mount
F/# F/1.8 to closed
Resolution Up to 3 megapixels (can be used on 5MPix cameras)
Distortion <1% barrel at image edges (for 1/3" sensor)
Minimum focus 0.5m
Pan focus distance 2.0m to ∞
Lens size Ø36mm x 56mm
Lens weight 70g (approx)
Technical specifications Download pdf
A&E spec Download pdf
Drawing SY110A drawing SY110M drawing
CAD iges file iges (5.5MB) iges (4.0MB)
Owner's manual Download pdf

Only if your camera has a receptical that looks like this can you use an autoiris lens

Autoiris connector

Lens Field of view

Sensor Size 1/4" 1/3" 1/2.5"
Sensor Diagonal Ø4.5mm Ø6.0mm Ø7.2mm
Sensor Format 4x3 4x3 4x3
Field of view (H) 94 ° 110 ° 120 °
Field of view (V) 78 ° 94 ° 104°
Field of view (D) 107 ° 122 ° 130 °
Additional Information

Additional Information

Model SY110A
Resolution Capability Megapixel, HD
Focal Length No
Iris Auto-Iris
Aperture 1.8
Mount CS Mount
Format Cover No
Brand Theia Technolgoies
Shipment N/A
Manufacturer's Suggested Retail Price No