a common optical component that partially transmits and partially reflects an incident light beam, usually in unequal proportions
In MIDAS collimators this is an optical quality glass sheet with a semi-reflective and semi-transmissive coating which can both reflect light from the monitor into the collimating mirror and at the same time permit the observer to view the image by looking through the beamsplitter.
a device used to produce two separate beams from one incident beam; generally a prism, window, or half-silvered mirror that reflects and transmits approximately equal portions of the incident radiation.
A device used to divide the light from the laser into two separate beams - the reference and object beams. It consists of a partially transparent mirror which reflects part of the laser beam and transmits the rest.
A device that optically splits a laser (or other) beam into two or more beams.
A device for dividing a light beam into two or more separate beams.
An optical device which divides one beam into two or more separate beams. A simple coated piece of glass in the optical path might reflect 60% of the light down onto the object, while allowing the other 40% to pass.
A device for dividing an optical beam into two or more separate beams; often a partially reflecting mirror.
An optical device, such as a partially reflecting mirror, that splits a beam of light into two or more beams. Used in fiber optics for directional couplers.
An optical element that reflects and passes specified percentages of the light rays striking it.(coll.) A device consisting of prisms and/or mirrors which can be attached to a mono camera to produce two side-by-side images (usually within a single frame). More accurately described as an image-splitter, as it does not split an individual beam into components. Because the groups of light rays forming the left and right images cross over as they pass through the camera lens, the recorded images end up in the correct configuration for stereo viewing without the need for the usual transposition
