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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The light reflected is magnified and focused on to an eyepiece or a photo detector. From Wikipedia, the free encyclopedia. Micro-Radian autocollimators are available in both analog or digital “servo” versions suitable for providing high speed, real-time angular monitoring in OEM servo-feedback and servo-feedforward systems. A plane mirror perpendicular to the optical axis serves the purpose of reflecting an image of the pattern back on to the observation point. Development in the laser fi eld created a n eed for accurate alignment of a laser beam to its mechanical dat um.

Depth Micrometer Principle of Depth Micrometer Verification of right angle prisms for angular errors 6.

Click here for a selection of Micro-Radian analog autocollimators. The alignment between lasers, vision systems, optics and state of the art autocollimatoor becomes critical for high-quality products that are produced by these systems.

Typically, the servo-version of the T40 or T30 optical heads are selected because of their compact, lightweight size and wide field of view. Autocollimators are high-precision instruments for measurement of angular reflections. New approaches to alignment and lasers combined with diamond machining of intricate optical assemblies will lead to proper assembly of mechanics, lasers and optics.


In bore sighting applications, the final accuracy and feasibility is crucial. Alignment and monitoring of robotic axes. Applications are roughly divided into two autocllimator – optical and mechanical engineering.

A small angular offset between the two can also can be easily achieved. Leave a Reply Cancel reply Your email address will not be published. It is used for various applications such as precision alignment, verification of angle standards, and detection of angular movement, among others.

Autocollimator – Wikipedia

Autocollimators may be classified into three types: Your email address will not be published. Reflex Photonics is growing its portfolio of integrated test systems A typical system could involve such technologies as accurate mechanics, lasers, vision systems, computers, electronics and packaging.

MicroVision to exhibit interactive display and consumer The next two schematic drawings outline two applications: The illuminated target reticle slit is imaged back in its own plane through the objective priciple and reflecting mirror.

The reticle is an illuminated target with autocollimatod cross-hair pattern, which is positioned in the focal plane of an objective lens. Figure 4 illustrates the construction details of a laser collimator. Thus when the mirror is perpendicular to the optical axis, the beam is reflected into itself and the displayed back reflected image will be princlple centered. The detector sends a signal which is digitized and processed using proprietary DSP-based electronics.

The autocollimator projects a beam of collimated light. In addition, the high intensity of the laser beam creates ultra-low noise measurements, thereby increasing the accuracy of measurement. They are also ideal any time very low autocollimatod measurements or very long distance measurements are desired.


Flatness estimation of machine tables, surface plates, etc. Checking right angle prisms for angular and pyramid errors. They are typically used to align components and measure deflections in optical or mechanical systems. Written by Oren Aharon 21 July Latest from the trade show floor. Two sensors are provided to measure displacement in each axis. Many other applications require alignment of the laser beam to its optical cavity or to other optical elements.

The deflection between the beam and the reflected beam is a measure of the angular tilt of the reflector.

The optical axis is exactly in line with the mechanical axis of the barrel. Figure 1 illustrates the working principle of an autocollimator.

Workinf is achieved by new techniques involving special state-of-the-art electronic autocollimator and new las er straightness measurements. The bore sighting procedure is performed in two stages. The instrument barrel, in addition to the laser emitter, contains a beam splitter and an array of photoelectric sensors.

Measurement of augocollimator of an outside corner by aperture sharing. Micro-Radian laser autocollimators have emitted beams as small as 1. The longer the focal length, the larger the linear displacement for a given tilt of the plane reflector.

Visual or conventional autocollimator. The rear lens along with the spatial filter ensures a sharp beam. These instruments have a resolution of up to 0. First step, aligning of Autocollimator woeking the mechanical reference using a mirror.