Details
Theia Technologies /images/theia-20.png
1/3" 1.8 - 3.0mm Manual Iris Lens. Day/Night corrected (up to 950nm). CS-mount. Up to 5MPix.
Theia's SL183 (CS mount) and ML183 (C mount) lenses provide ultra wide field of
view without distortion. These are varifocal lenses allowing the user to
optimize the field of view from wide angle to ultra wide. The lenses incorporate
patented Linear Optical Technology® which allows an ultra wide field of view
without barrel distortion unlike 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.
Similar to Theia's other lenses, the SL183 and ML183 are high quality lenses
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.
In addition, the SL183/ML183 series includes EasyZoom™ which allows the
installer to focus the lens once and then adjust zoom or magnification to give
the optimized field of view. Only minor focus optimization is required after
zooming. There is no need for the iterative focus-zoom-focus method of setup
required for other varifocal lenses.
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.
SL183M | |
Iris type | Manual iris |
Focal length | 1.8mm - 3mm using Linear Optical Technology® |
F/# | F/1.8 to closed |
Resolution | up to 5 megapixel |
IR correction | Yes |
Mount type | CS-mount |