Firstsight offers varifocal lens from Tamron

The 1/2in, 4-12mm (F/1.4) megapixel varifocal lens from Tamron is now available from Firstsight Vision.

The lens combines megapixel resolution imaging capabilities with the flexibility of mounting in production line environments.

Fixed-focus lenses are traditionally used in production line environments on the basis that the product to be inspected is of a consistent height.

However, varifocal lenses are suited to inspection lines that might be used for a number of different products.

In addition, the varifocal capability may be of benefit if there is little flexibility in the mounting position for the camera, since the focal length can be adjusted to suit the application.

The lens is available in both manual and DC auto iris models.

Both feature advanced optical designs employing aspheric elements and LD (low dispersion) glass to minimise aberrations and deliver high resolution image quality.

The lenses can also be used in general surveillance and traffic applications.

The company said that the high quality optical performance ensures excellent resolution even in the corners of the image field.

An angle of view in excess of 100deg is possible at the widest-angle (4mm) setting, reducing the number of cameras required for comprehensive surveillance.

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