Opto-Line International, Inc.
265 Ballardvale Street
Wilmington, Massachusetts 01887
Industry leaders in manufacture of low reflectance apertures for custom applications:
Low Reflectance Apertures
The optics aperture is
a hole or an opening through which light is admitted. The
aperture of an optical system is the opening that determines
the cone angle of a bundle of rays that come to a focus
in the image plane.
The apertures limit the ray bundles
also known as pencils of light. They deliberately
limit the light admitted by the system. The aperture stop is
the stop that determines the ray cone angle, or equivalently
the brightness, at an image point.
Precision Reticles for Custom Military Applications
Reticles for Custom Medical Technology
Reticles for Custom Industrial Application