The light valve was originally developed at Stanford University, in California, by electrical engineering professor David M. Bloom, along with William C. Banyai, Raj Apte, Francisco Sandejas, and Olav Solgaard.
In July 2000, Sony announced the signing of a technology licensing agreement with SLM[REF][REF] for the implementation of GLV technology in laser projectors for large venues,[REF] but by 2004 Sony announced the SRX-R110 front projector using its own LCoS-based technology SXRD.