Edmund Optics Autocollimator, Step-By-Step Instructions, Page: 2 / 23

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INTRODUCTION
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What is an autocollimator?
• The Autocollimator is a precision instrument composed of an
achromatic objective, a LED, reticle, beamsplitter, and an eyepiece
with a reticle. The reticle cross-hair is projected onto a reflective
surface, with the returning reflected beam diverted by the beam
splitter to the eyepiece reticle. The deviation in angle is measured by
the eyepiece. This instrument has multiple applications such as
measuring small angles, as well as calibrating and aligning various
optical instruments and components.
Why TECHSPEC Optical Cage System?
• The TECHSPEC Optical Cage System makes alignment easy. In just
a few short steps, a simple autocollimator can be assembled and
aligned. Building an autocollimator with the TECHSPEC Optical Cage
System makes it easy to swap the optics, allowing the user to change
the field of view and resolution quickly and easily. In addition, a
camera could be added in the place of the eyepiece for image
capture or video capability.