Is a laser TV a projector?
Laser TV and projector look very similar, they are both the size of a small box, projected on the screen for viewing , so many people think that a laser TV is a projector using a laser light source, but in fact, a laser TV and a projector are not the same thing.
The projector and the laser TV are different in essence. The projector is just a display terminal, which is mainly used to output pictures and videos. The laser TV is just a TV with a different display mode, and it has its own TV system.
Second, what is the difference between a laser TV and a laser projector
When it comes to laser TV, many people think of a projector, and some people think that a laser A TV is a large projector, but in fact the difference between a laser TV and a projector is quite big:
1. The type of light source is different
Projector light sources can be mainly divided into three types: traditional light sources, LED light sources and laser light sources. The mainstream projectors on the market basically use LED light sources; while laser TVs use laser light sources, generally using red, green, The blue three-primary solid-state laser or the single-color solid-state laser is used to excite phosphors as the light-emitting source, and the image is connected to the image through the TV signal and the image is displayed on the special projection screen using DLP technology.
2. Different projection distances
Different from projectors, the biggest feature of laser TVs is that they can project larger projections at ultra-short distances. size screen. Most ordinary projectors use telephoto projection, the projection ratio is above 1.2:1, and a distance of 2-3 meters is required to project a large screen. The projection ratio of laser TV is even smaller, generally below 0.3:1, and it only needs to be about 30 cm away from the wall to project a large screen of 100 inches.
3. Different brightness
Laser TV is measured according to the brightness of human eyes – nits as the only standard to ensure the optimal brightness of human eyes; The projector uses luminous flux – lumens as a measure of brightness. The brightness standard is not clear and is easily affected by the environment. In addition, the brightness of the screen is not only affected by the brightness of its own machine, but also limited by the screen. Home laser projectors that do not require particularly high brightness usually use white plastic screens, glass bead screens, glass fiber screens, etc. These screens focus on color reproduction performance and detailed display of grayscales to improve brightness to a certain extent. The laser TV must be equipped with an anti-light screen to cope with the living room environment. Through a special optical structure, the anti-light screen reflects the light emitted by the host TV to the location of the audience, filtering out the ambient light and improving the overall visual brightness.
4. Different usage scenarios
Home laser projectors are generally used in bedrooms and audio-visual rooms to enjoy movies in the dark and see the details of the dark parts of the picture , color gradation, etc.; laser TV is a TV, which is generally used in the living room. There is no need to draw curtains and hoisting. Laser TV is more suitable for daily family watching movies, parties and games.
5. Different durations of use
The service life of laser TVs and laser projectors is greatly affected by the life of the light source. Ordinary household laser projectors mostly use mercury light sources, and the use time is mostly 6,000 to 8,000 hours; while laser TVs use laser light sources. In the normal mode of use, the life of laser TV light sources is about 2W hours, which is approximately equivalent to ordinary laser projectors. 3 times.
6. Different user experience
Laser TV is closer to TV because it adds a lot of “convenience” design, it has a smart TV chip, Meet the needs of users for voice search, online movie watching, watching variety shows, etc. For safety reasons, many laser TVs use eye protection sensing devices to automatically detect the position of people. Once someone approaches, turn off the light source immediately to prevent the light from directly entering the eyes, and then restore the picture. The viewing experience of the projector is relatively poor. On the one hand, the brightness is lower. In addition, the projector projection is greatly affected by the ambient light.
