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  • Wide-Angle Lens Fits 1.2-in.-Sensor Cameras

May 2008
Docter Optics SERequest Info
• compact
• 8.5-mm focal length
• antireflection coatings

Doctor-Optics_Stilar_2.8_8_Produktfoto.jpgThe Stilar (sensor transmission image large-angle resolution) 2.8/8 superwide-angle lens has been unveiled by Docter Optics GmbH for use in 1.2-in.-sensor cameras. Suitable for machine vision and measurement cameras as well as for industrial and biometric surveillance systems, the compact device features an image circle diameter of 21.43 mm, a focal length of 8.5 mm at 546 nm, with click-stopped apertures ranging from f/2.8 to f/11, and a focusing range that is adjustable from 0.35 m to infinity.

The lens elements have antireflection coatings. Designed to produce high relative illuminance and low light falloff, the vignette-free lens offers high transmissivity in the visible range. It provides high edge-to-edge resolution and good colour correction over the full visual spectrum, and it can reproduce line frequencies of up to 50 line pairs per millimeter with high contrast. It is supplied with a standard C-mount, and adaptors and additional step rings are available as options.

Back focal length is 11.3 mm, object angle is 116°, and insertion depth is 6.4 mm. The lens is 112.3 mm thick, 117 mm long and 85 mm in diameter. Focusing control is manual and lockable, and focusing angle of rotation is 43.7°.


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