Variable beam splitters have a inhomogeneous layer distribution on a square substrate.
The components are used to incorporate two beams in an assembly with a
identical following the last optic in the system. This is impossible with
conventional beam splitters because the different components transmit light
The beam splitters are based on a customer request. The designs depend on
the wavelength: If a variable beam splitter is developed for a wavelength of 532
nm, it does not function at another wavelength. For example, for 1064 nm
designs, transmissions from 45% to 55% and 10% to 70% are available, or for
the wavelength 753 nm transmissions from 4% to 20%.
Two standard sizes are offered: 45 mm x 22 mm and 70 mm x 22 mm. Other sizes
are available but the maximum length of the substrates is restricted at 70