October 12, 2000

For a limited time, Colutron Research has cut prices on all our standard and custom phosphor screens. For more information on this price reduction, please follow the link Colutron Phosphor Screen Price Reduction.  

The phosphor screens used by the BVS and BIS systems are available separately. They consist of a glass disc or fiberoptic plate coated with P-20 phosphor and are aluminized. An extra layer of aluminum is deposited in a ring 0.050" (1.27 mm) wide on the outer diameter of the phosphor screens. This allows for electrical contact to the phosphor screen using optionally available metal contact rings. Screens are aluminized to increase light efficiency by up to 100% since light created at the phosphor is reflected back at the aluminum layer. Also, the conductive aluminum layer aids in the reduction of charge build up from electrons and ions. If the phosphor screen is used in conjunction with an electron multiplier such as a microchannel plate (MCP), an electron acceleration energy of 3kV will be required to pierce the aluminum layer. If this acceleration voltage is too high for a particular application, indium-tin-oxide (ITO) coated screens can be used to provide the conductive base needed to minimize the electrostatic effects of charged particles. Phosphor screens can also be ordered with P-11, P43, P46, and P-47 phosphors. If a custom size is required, or you need your own disc re-coated, please contact Colutron Research for a quotation.

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