LED Engin, Inc. is a specialist developer and manufacturer of advanced solid-state lighting components, founded in 2004 and headquartered in San Jose, California, USA. The company focuses on high-lumen density, compact multi-die LED emitters and modules that combine multiple LED dice in a single small-package footprint. Its core product lines include the LuxiGen series of color, white, and UV LED emitters, the LZ1 and LZ4 series for high-power density applications, and the LZP series of high-power white LEDs with exceptional flux density. LED Engin also offers custom optics and total light source modules for rapid integration. The company's technology is widely used in demanding markets such as entertainment and architectural lighting, medical and life sciences instruments, UV curing, and portable projection systems. LED Engin holds a leading position in the niche of ultra-high-flux-density multi-die LED packages, often competing on performance and thermal management rather than scale. Its close collaboration with customers enables tailored solutions that shorten time-to-market for OEMs. With a strong intellectual property portfolio in LED packaging and optics, the company continues to drive innovation in miniaturized solid-state lighting. LED Engin was acquired by Richmond in 2020, expanding its manufacturing and global reach.