Autocollimators are optical instruments that measure angular displacements and are used to align optical components Autocollimator Principals of Operation. Due to the collimated beam (infinity adjustment) the measurement results are independent from the distance to the object under test. The operating principle is . Auto-collimator is an optical instrument used for measuring small target crossline is therefore visible through the eyepiece thus operating as.

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Autocollimator – Wikipedia

A major advantage of this type of collimator is that it uses digital signal processing technology to detect and process the reflected beam. Verification of angular errors autocollimtor rotary tables, indexing heads, and platforms of machine parts.

Please contact us to discuss your particular application. This combination with some addit ional optics will be very useful for bore sighting application between an optical sight and laser systems. Angle comparisons of reflecting surfaces. Introduction to Comparators Mechanical comparato The reticle is an illuminated target with a cross-hair pattern, which is positioned in the focal plane of prinicple objective lens. The newly invented Laser Analyzing Autocollimator LAA will allow bore sighting between multiple lines of sights to a laser, or laser designator or some other bore sighting application.

The line of sight, in this case, laser beam, is precisely cantered, thanks to the ptinciple and supporting fixture. The shift of the autocollimation image from the center of reticule in both x and y directions is proportional to the mirror’s t ilt angle. Visual collimators are typically focused at infinity, making them useful for both short and long-distance measurements.

An ultra-compact, high-power LED for high-density solid-state Written by Oren Aharon 21 July Digital autocollimators use an electronic photodetector to detect the reflected beam. This enables the filtering out of stray scattered light, which sharpens the quality of the image? Floating Carriage Micrometer Linear Measurement.


In addition, the high intensity of the laser beam creates ultra-low noise measurements, thereby increasing the accuracy of measurement. This page was last edited on 12 Octoberat 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.

Depth Micrometer Principle of Depth Micrometer Electronic and digital autocollimators are used as angle measurement standards, for monitoring angular movement over long periods of time and for checking angular position repeatability in mechanical systems.

The plane reflector is one of the vital parts of an autocollimator, because a mirror that is not flat will defocus the return image, resulting in poor definition of the image. Alignment of lasers to an optical or mechanical datum, while adjusting the laser divergence angle along the optical axis will greatly improve the optical performance of laser systems.

Determination of parallelism of slide movements with respect to guide ways. A digital autocollimator uses an electronic photo detector to detect the reflected light beam.

Because the autocollimator uses light to measure angles, it never comes into contact with the test surface.

Micro-Radian Autocollimator Principles of Operation

It is clear from this relationship that the sensitivity of an autocollimator depends on the focal length of the objective lens. Alignment is achieved by new techniques involving special state-of-the-art electronic autocollimator and new las er straightness measurements.

The rear lens along with the spatial filter ensures a sharp beam. Angular measurement of static as well as dynamic systems. Applications News Wroking Enlightening Applications. The alignment effect is achieved by a specially designed instrument called the Alingmeter.


Figure 4 illustrates the construction details of a laser collimator. Because the human eye is able to discern multiple images simultaneously, visual autocollimators are suitable for measuring multiple surfaces workjng.

Retrieved from ” https: It is then re-imaged onto a vibrating slit sorking means of a relay lens. As such, the autocollimator has a wide variety of applications including precision alignment, detection of angular movement, verification of angle standards, and angular monitoring over long periods.


The new apparatus is based on a state-of-the-art autocollimator combined with an imaging laser beam profiler. Princip,e a second application the basic requirement is to bring the laser and its sight to be aligned with a mechanical mounting interface. Laser autocollimators represent the future of precision angle measurement in the industry.

All these applications have a common trait with the original application and that is that a remote external target is necessary in order to perform the line of princile alignment.

Originally bore sighting is defined as the adjustments made to an optical scope to be aligned to the firearm barrel. The laser beam is aimed at the target. Since the output is digital in nature, it can be transferred to a data acquisition system, thereby facilitating storage and further processing of data. An external reflector reflects all or part of the beam back into the instrument where the beam is focused and detected by a photodetector.

An autocollimator is an optical instrument for non-contact measurement of angles. The technology presented allows fusing da ta of alignment autocollimator with incoming laser beam information to increase the overall performance and autocoloimator applications. Thus when the mirror is perpendicular to the optical axis, the beam is reflected into itself and the displayed back reflected image will be exactly centered. Autocollimators are high-precision instruments for measurement of angular reflections.

It is a special form of workibg that is used to measure small angles with a high degree of resolution.