In an electronic autocollimator the eyepiece is replaced by an electronic camera with discrete sensor pixels (e.g. CCD or CMOS sensor type). The digital camera is usually connected to a PC which calculates the measured angle from the image by using image analysis software. The high resolution of electronic autocollimators is due to the evaluation of gray scale levels in the image which allows for sub pixel interpolation of the image position.

Electronic autocollimator are specially designed for following measurement tasks.

• measurement of small angles
• precision angular adjustment and calibration
• quality control of machine tools and optics industries

The software represents and image processing system with specialized measuring function for use in connection with autocollimators and telescopes. The hair cross position is detected highly accurate with subpixel algorithms. The software was designed to retrofit visual autocollimators with a CCD-Camera and reach be this means objective measuring results in the accuracy level of electronic autocollimators. Windows Image processing software for highly accurate angle measurements with autocollimators. Autocollimation head with direct connection of the USB-camera for data acquisition.