RealD Inc. is the company that develops the RealD Cinema technology, used for projecting films in stereoscopic 3D

3-D film

A 3-D film or S3D film is a motion picture that enhances the illusion of depth perception...

 using circularly polarized light. The company was founded in 2003 by Michael V. Lewis and Joshua Greer. Between 2005 and 2007 the company purchased StereoGraphics Inc.

StereoGraphics

Lenny Lipton founded StereoGraphics Corporation in 1980 to market 3D Computer Display technology. Based in San Rafael, CA1982 patent "Stereoscopic television system" the first flicker-free electronic stereoscopic display...

 and optical components technology company ColorLink, a provider of rear-projection television

Rear-projection television

Rear-projection television or RPTV is a type of large-screen television display technology. Up until the mid-2000s, most of the relatively affordable consumer large screen TVs up to used rear-projection technology...

 (RPTV) equipment, polarizing film and optical technologies including technologies for the US Military. RealD developed its acquired technology to create its 3D cinema systems.

RealD supplies 3D technology to customers including Fortune 500 companies, theme parks, education centers, and for medical research and procedures. The company held its initial public offering

Initial public offering

An initial public offering or stock market launch, is the first sale of stock by a private company to the public. It can be used by either small or large companies to raise expansion capital and become publicly traded enterprises...

 on July 20, 2010, when a total of 14,375,000 shares of common stock

Common stock

Common stock is a form of corporate equity ownership, a type of security. It is called "common" to distinguish it from preferred stock. In the event of bankruptcy, common stock investors receive their funds after preferred stock holders, bondholders, creditors, etc...

were sold.

RealD has an exclusive agreement with Sony to provide technology to project 3D movies with the Sony 4K projector. Sony is their highest shareholder.