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        Theia ML183M Ultra wide varifocal lens

        Update: 2018/4/20      View:
        • Brand:    Theia
        • Type:    ML183M
        • Order Online
        Introduction

        Theia ML183M Ultra wide varifocal lens: SL183/ML183

        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.

        Technical specifications for SL183 and ML183 lenses

        View the example wide angle images

        SL183A ML183A SL183M ML183M
        Iris type DC autoiris 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 C-mount CS-mount C-mount

        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.

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