laser? lumen? 4K? The concept of laser TV that you don't know is here.

Laser is the purest color source

The sun and electric lights seem to be white, but when you let it pass through a prism, you can see the seven colors of red, orange, yellow, green, blue, cyan, and purple. This is because the various photons emitted by ordinary light sources are different in frequency/wavelength, and the photons contain various colors.

The laser emits the same photon frequency/wavelength, which is the purest color source. This monochromatic property of lasers has been widely used in clinical selective therapy, optical measurement and spectroscopy.

Laser is a very directional light source

The laser beam divergence angle is very small, almost a parallel light. If the laser is irradiated from the earth to the moon, the spot diameter is only about 1 km. The light from ordinary light sources is directed in all directions. In order to concentrate ordinary light in a certain direction, people have developed concentrating equipment. Even the best searchlights that are currently concentrated, such as the light from the earth, are on the moon. Its spot diameter will be expanded to more than 1000 kilometers.

It can be known from geometric optics that the better the parallelism, the smaller the focal spot size of the beam after focusing, the dispersion of the laser after focusing, the size of the spot is further reduced (up to the micron level), and it can be used as a cell or a molecule. Fine "scalpel".

Laser is a highly concentrated source of energy

The directionality of the laser is good, and its energy is concentrated in a limited space, which can lead to a rapid increase in local temperature, and a strong laser can even generate hundreds of millions of high temperatures.

Laser high energy properties make it easy to punch, cut and weld steel plates in industrial production. In medicine, retinal coagulation can be removed and surgery performed. In mapping, measurements of the distance from the Earth to the Moon and satellite geodesy can be performed. In the military field, optical weapons capable of destroying enemy aircraft and missiles can be made.

Laser is a very bright light source

The principle of laser TV composite images is similar to that of television sets. The laser beam is "swept" from top to bottom and from left to right. Horizontal deflection (line scanning) is achieved by a multi-faceted rotating mirror in the projection head, and vertical deflection (frame scanning) is achieved by a tilting mirror.

There are three main ways to realize the laser light source of laser TV, including three primary color pure laser light source, fluorescent pink wheel plus blue laser, and LED plus blue laser hybrid light source.

Laser TV user experience changes

Highest demand: screen calibration, connection to external devices

Medium demand: play peripheral files, play network video, product maintenance and cleaning

Minimum requirements: switch convenience, volume image adjustment, installation APP, etc. The UI interface is innovative, simple to operate, and surround sound.

Compared with the traditional projection, the viewing is more complicated, and it is necessary to lift the screen, open the projector, find the source of the film... And the laser TV can meet the simple operation of the projection user to enjoy the good audio-visual experience, and the picture quality is superior to the projection. These home users will be the mainstream customers of laser TV now.

4K laser TV

For example, the 4K laser TV on the market first uses a high-processing optical engine, which has a processing capacity of 300% higher than that of 2K laser TV products, thus achieving fine control of 8.3 million beams of light and achieving image performance of 8.3 million pixels. Secondly, 4K laser TV requires high-resolution lens design, Hisense 4K lens achieves 186 beams per mm of optical resolution; third, 4K laser TV manufacturing requires micron-level material control accuracy and lens adjustment accuracy, Hisense The 4K laser cinema TV uses a high-precision manufacturing process, and the machining achieves a precision of 10 micrometers close to the limit. The lens mount accuracy is 5 micrometers, and the error is less than 1/20 of the diameter of one hair. DLP 4K projection technology, optical part ANSI brightness has reached a level of about 3000 lumens, higher than the ANSI brightness (1000 lumens) of traditional professional projectors, also supports 3D cinema technology, achieving 8.3 million pixel image performance, This combines reflective ultra-short focus with 4K ultra-clear resolution.

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