Window dressing Lighting designers often use different types of equipment to create environments. The newest tool is suspended particle device (SPD) technology, commonly known as "smart glass" technology, which provides a unique method of controlling light transmission through glass and plastic. Research Frontiers of Woodbury, NY, has spent 30 years researching SPD and amassed 110 patents; the technology is now being licensed and incorporated into products that should appear later this year.<
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