A third version of the beam splitter is a dichroic optical coatings to divide an incoming light beam into a number of spectrally distinct output beams.
22.
As the filter is in the optical path, any imperfections non-flat or non-parallel surfaces, reflections ( minimised by optical coating ), scratches, dirt affect the image.
23.
During World War II, he helped develop an optical coating to improve the vision of submarine periscopes, and worked on depth charge and missile guidance technology.
24.
The simplest optical coatings are thin layers of metals, such as aluminium, which are deposited on glass substrates to make mirror surfaces, a process known as silvering.
25.
The other major type of optical coating is the dielectric coating ( i . e . using materials with a different refractive index to the substrate ).
26.
-- Optical Coating Laboratory Inc . ( OCLI ) was rated short-term and long-term " outperform " in new coverage by analyst Timothy Gerdeman at Everen Securities.
27.
Ion plating is used to deposit hard coatings of compound materials on tools, adherent metal coatings, optical coatings with high densities, and conformal coatings on complex surfaces.
28.
Small amounts of other elements can be mixed into the quartz, so that the " doped " quartz ( or selective optical coating ) blocks harmful UV radiation.
29.
*The very best mirrors that you can make use special optical coatings and reflect about 99.999 % of the incident light ( in a narrow wavelength range ).
30.
Optical flats are sometimes given an optical coating and used as precision mirrors or optical windows for special purposes, such as in a Fabry P�rot interferometer or laser cavity.
