The line that divides the two half-images in a coincidence rangefinder. The two halves of the images formed by the two objectives of the instrument must be brought to a point where they coincide above and below the halving line.

A microscope eyepiece designed for use with apochromatic objectives. Since apochromatic objectives are undercorrected for...

Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement,...

Also known as a white-light interferometer. Measures surface texture and shape from nanometer-scale roughness to...

A compound prism consisting of an assembly of small prisms cemented together that is used in a coincidence rangefinder to...

A CubeSat is a type of miniaturized satellite characterized by its standardized size and modular design. CubeSats are...

The lens located at the object end of a microscope tube. A wide range of objectives is available, including simple...

An image-forming system that uses mirrors rather than lenses. Such objectives are frequently used for astronomical...

A form of a stereoscopic microscope having paired objectives, prisms and eyepieces, and invented by H. Greenough.

Low Earth orbit (LEO) refers to a region in space that is relatively close to Earth's surface, typically characterized by...

Design and engineering consulting services refer to professional services provided by specialized firms or individuals to...

A machine vision system is an integrated combination of hardware and software components designed to capture, process, and...

An oil required by oil-immersion objectives that is applied between the exterior of the objective lens and a cover glass or...

Photographic recording that uses infrared radiation as the light source to form an image of a microscopic object and a...

The field of view seen through some types of coincidence rangefinders. It is formed by the juxtaposition of opposite halves...

A microscope objective designed to be used without liquid between the cover glass and the objective, or, in the case of...

Machine vision lighting refers to the use of specific lighting techniques and equipment in the field of machine vision,...

An Abbe condenser in which the upper lens element is fixed. The lower lens may focus the illumination between the elements...

Optical design software refers to specialized computer programs used by optical engineers, physicists, and designers to...

A specially designed microscope for observing the etched surface of a polished metal specimen. The specimen is often laid...

The position and shape of the image of a point source, as predicted by geometric optics alone. The geometric image is to be...