To measure straightness of a beam with the use of Auto-Collimator. – To identify the principle of Auto-Collimator device. – To be able to draw conclusions about. Auto-collimator is an optical instrument used for measuring small angular differences. Relevant for: Autocollimator The autocollimator combines both optical tools, the collimator and the telescope into Operating principle of the autocollimator.

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Measurement of squareness of an outside corner by aperture sharing.


Operating principle of an autocollimator. New approaches to alignment and lasers combined with diamond machining of intricate optical assemblies will lead to proper assembly of mechanics, lasers and optics.

The bore sighting procedure is performed in two stages. If the beam diverges, a virtual image is produced at the aparent crossing point of the beam rays. Retrieved from ” https: The autocollimator projects a beam of collimated light. Moving the reticle away from objective lens will result in a convergent beam. The telescope is an optical tool that images an object at a far distance – usually preset to infinity – into the image plane of the objective lens.

Additional uses include measurements of flatness or straightness and providing angular feedback in servo-controlled systems. A special interest is the alignment of two or more line of sights, one from a laser source and the second from one or more cameras with a significant parallax distance between the devices. An autocollimator works by projecting an image onto a target mirror and measuring the deflection of the returned image against a scale, either visually or by means of an electronic detector.


Because the human eye is able to discern multiple images simultaneously, visual autocollimators are suitable for measuring multiple surfaces simultaneously. This page was last edited on 12 Octoberat Focusing Collimator Finite distance setting real image. Due to the collimated beam infinity adjustment the measurement results are independent from the distance to the object under test.

This new technology achieves better results in a shorter time and without the need of external targets, enabling various sensors and lasers to have their line of sight perfectly aligned. The resolution of an autocollimator increases proportionally and the angular field of view reciprocally with the focal length of the objective lens. So far the system works well with lasers and sights from UV to communication and eye safe lasers of nm although this technology could be further expended to longer wavelengths.

The alignment between lasers, vision systems, optics and state of the art mechanics becomes critical for high-quality products that are produced by these systems.

Laser Autocollimator and Bore Sighting – Novus Light Today

Applications News Features Enlightening Applications. This set up in is known as infinity setting. Many other applications require alignment of the laser beam to its optical cavity or to other optical elements. Views Read Edit View history. Micro-Radian autocollimators are available in both analog or digital principlw versions suitable for providing high speed, real-time angular monitoring in OEM servo-feedback and servo-feedforward systems.

Autocollimatorbore sightinglaserDuma.

What is an Autocollimator? The built in autocollimators’ cross is than projected to the sight pinciple will be adjusted to coincide with the projected cross direction. The autocollimation effect and name is derived from the fact that the same telescopic lens is used to project the image and collect its back reflection from a mirror element.


The image of the reticle is real and projected at a finite distance.

An autocollimator is an optical instrument that is used to measure small angles with very high sensitivity. The new apparatus is based on a state-of-the-art autocollimator combined with an imaging laser beam profiler.

Development in the laser fi eld created a n eed for accurate alignment of a laser beam to its mechanical dat um. By using this site, you agree to the Terms of Use and Privacy Policy. Because of the laws of reflection that double the angle of the back reflected beams, autocollimators are calibrated to show half the angle of the total incoming beam deviation.

Modern technologies are characterized by extreme complexity, and by the fact that one system is built by fusing several technologies together.

Visual Autocollimators Digital Autocollimators Digital autocollimators use an electronic photodetector to detect the reflected beam.

A small angular offset between the two can also can be easily achieved. In this application the LAA will be first aligned to a mirror surface representing the mechanical interface. The new RSL safety laser scanner with detailed measurement value From Wikipedia, the free encyclopedia. Optical devices Optical metrology Measuring instruments.

Optical Angle Measurement

Moving the reticle toward the objective lens will result in a divergent beam. Micro-Radian autocollimators take advantage of the latest detector technology including advanced silicon-based photodetectors and germanium-based detectors. In an electronic autocollimator the eyepiece is replaced by an electronic camera autoocollimator discrete sensor pixels e.