Autocollimator

An autocollimator is a sensitive, highly accurate Optical Instrument with a combination of a Telescope and collimator for precision alignment, detection of angular displacements & verification of angle standards. And we are in the list of high profile autocollimator Manufacturers in India.

Principle
The optical autocollimator projects a beam of collimated light. An external reflector reflects the beam back into the instrument where the beam is focused and detected. The autocollimator measures the deviation between the emitted beam and the reflected beam. A reflector is used to direct the emitted beam to the Eyepiece Graticule of the Instrument. If the surface on which the reflector is placed is perpendicular to the projected light, the beam is reflected back to its point of origin. If, however, the surface is tilted relative to the optical axis of the collimator, the reflected light is displaced (visualized against a graticule - usually a crossline). Any deviation between the projected and reflected beam is measured against a scale and measured in arc seconds.

Visual autocollimators use detection of the image cross line with reference to the reticule eyepiece cross line. These are used for coarse measurements.

Micro-optic Autocollimators use a micrometer arrangement for the measurement of the image cross line position with reference to the reticule eyepiece cross line. These are meant for fine and accurate measurements within few arc seconds.

Electronic Autocollimator use a CCD camera to detect the position of the image and eyepiece cross lines. These are for highly precise angular deviation measurements or for calibration.

Precision autocollimators are used in industrial and manufacturing environments for precision alignment of mechanical components, the detection of angular movement and angular monitoring over time and to ensure there is no angular error in a system and to ensure compliance with angle specifications and standards.

Application :

Schematic illustration of an Autocollimator

Specifications