Laser TV
The special case of one ray reduces the system to a monochrome display as, for example, in black and white television.
This principle applies to a direct view display as well as to a (front or rear) laser projector system.
Lotsch and F. Schroeter explained laser color television for conventional as well as projection-type systems and gave examples of potential applications.
[2] 18 years later the German-based company Schneider AG presented a functional laser-TV prototype at IFA'95 in Berlin, Germany.
[10][11][12] A Popular Science writer was impressed by the color rendering of a Mitsubishi laser video display at CES 2008.
[15][16][17] LG introduced a front projected laser TV in 2013[18] as a consumer product that displays images and videos measuring 100 inches (254 centimeters) with a full high-definition resolution of 1920 x 1080 pixels.
[21] Lasers may become an ideal replacement for the UHP lamps[22] which are currently in use in projection display devices such as rear-projection TV and front projectors.
The lasers typically use specific wavelengths of light, resulting in a wider color gamut and superior brightness.
Additionally, laser light sources generally have a longer lifespan and are more energy-efficient, contributing to lower operational costs and environmental impact.
Laser TVs are mainly large-sized, with pure light sources, bright colors, and authenticity, also support 4K display resolution.
There are several realizations of laser projectors, one example being based on the principle of a flying light spot writing the image directly onto a screen.
A laser projector of this type consists of three main components — a laser source uses the video signal to provide modulated light composed of the three sharp spectral colors — red, green, and blue — which a flexible, fiber-optic waveguide then transports to a relatively small projection head.
Such laser projection techniques are used in handheld projectors, planetariums, and for flight simulators and other virtual reality applications.
As related technical problems are gradually resolved, the popularization of laser TV products in households remains a major goal.
At the end of December 2019, the CESI Laboratory of the China National Institute of Electronic Standardization and a team of ophthalmologists from Peking Union Medical College Hospital conducted a research project regarding the visual perception and eye strain of laser displays.
The white paper published the eye-care evaluation data of laser TVs and traditional LCD TVs by ophthalmology experts of China Electronics Technology Standardization Institute's CESI Laboratory and Peking Union Medical College Hospital, and made scientific suggestions on how to protect the visual health of adolescents.
The advancement of laser television combined with better optical imaging technology can be lucrative in the future home display market.
Laser TVs must continue to develop to maintain a competitive advantage in order to occupy a larger market share.
