DLP projection technology with laser light source

DLP projector with super ideal color is released: Mitsubishi releases "3 primary color laser projection technology"

Schematic diagram:

Mitsubishi releases "3 primary color laser projection technology"

Mitsubishi announced a new set of projection technologies: 3-primary color semiconductor laser projection technology that supports the "xvYCC" color specification. The new technology will be first applied to DLP rear-projection TVs. According to Mitsubishi, after applying "laser projection technology", in addition to improving the image quality compared to traditional DLP projection, it no longer requires color filters and color wheels, and the projection brightness is higher. It is expected that the price will also be lower, and the size will be smaller, the power consumption will be lower, and the light source life will be longer. Mitsubishi also claimed that the image quality of "laser projection technology" will completely change the requirements of the TV and projection market for images!

"Laser projection technology" is to replace the original projection bulb with a semiconductor laser light source of three primary colors. The three primary color lasers are introduced into the light path through optical fibers, and then projected onto the DMD to complete the projection imaging.

In conjunction with the "Laser Projection Technology", Mitsubishi has specially developed the "Natural Color Management Technology (NCM)", which decomposes the image signal into brightness and color, and further divides the color components into 12 groups, and then calculates them independently to generate the most suitable projection color.

Mitsubishi's "laser projection technology" supports the "xvYCC" color specification. The technical standard of the xvYCC international image is to expand the existing color gamut by about 1.8 times to enhance the color reproduction function (awider color reproduction). Therefore, the display that supports xvYCC technology will display colors that are very close to the color range that human vision can recognize.

There is also Kodak's linear grating technology.

The principle is to use micro-mechanical technology to create an electro-optical grating, which can diffract light to achieve contrast.

In a split second, a one-dimensional ribbon can appear and then be scanned into a two-dimensional image.

In June 2004, Kodak successfully developed a new laser projection TV component using MEMS (micro-electromechanical system) and exhibited it for the first time at the "SID 2004" exhibition. It can be used as an image component for front-projection and rear-projection TVs.

Kodak calls the element it has developed "GEMS (Grating Electro-Mechanical System)". A linear grating is formed on silicon material that can diffract light through electrical control, and the image is projected onto the screen while controlling the brightness of the laser. The pixel size is 36μm, and 1080 pixels are arranged vertically. This allows the display of 1080 lines of images. The company already has CCD sensor manufacturing technology, and this time it applied sensor manufacturing technology. The optical efficiency exceeds 60%, the response time is 50ns, and the contrast ratio is 2000:1.