Which light source should you choose when purchasing a projector?

Released：2019-04-09

　　In recent years, more and more HLD (high-brightness LED light source) and laser 3D projectors have rushed into the market and eroded the share of traditional light source projection products. From a technical point of view, the traditional projector bulbs have obvious defects, which can no longer meet the needs of users in the new era. Although there is still a certain market, it is only a matter of time to be completely replaced by new light sources.

Laser projection

　　So for the consumer, when purchasing the projector, which light source to choose is the most concerned issue. Some consumers will think that laser projectors are an emerging technology for LED projectors, and there are obvious advantages for LED projectors in projection technology, so laser projectors are preferred when purchasing. The author believes that laser projectors and HLD projectors have their own market segments. Laser projectors and HLD projectors have their own advantages and disadvantages. How to choose the application and application scenarios to be purchased.

　　The laser source is a solid state light source, so the laser has the same stability as HLD. The laser light source has better sealing performance and better dustproof performance. Therefore, the laser source projector can theoretically project at any angle, so that the laser source can be applied to more occasions.

Laser projector

　　Because the laser light source has the characteristics of wavelength selectivity and high spectral brightness, it is technically possible to achieve a color gamut coverage of more than 90% of the natural color seen by the human eye, and has a better color reproduction degree. The main advantage of laser projectors is that the laser source has an ultra-high brightness, which is the place where early LED projectors were the most criticized. In addition, the long life of the laser projector is used, which greatly reduces the maintenance cost in the later period. At present, there are two kinds of laser projectors, three-color laser projectors and monochrome laser projectors on the market. The color and brightness performance of the three-color laser and the later cost control are indeed unmatched by other light sources, but the price is high. It can only be limited to a few high-end market applications, and for the home projector market that pursues the ultimate color, such price is definitely not realized in the short term. At present, the main application in the market is monochromatic laser. Although the monochromatic laser also has a wide color gamut, the accuracy of color is not so ideal. In this way, the advantages of the HLD source as the three primary colors are highlighted.

　　When the LED light source was just produced, its excellent color expression, long service life and extremely low energy consumption made it a new source of light for the projector, but the problem of low brightness has always restricted its development. The appearance of HLD has greatly improved the shortcoming of low LED brightness. From a technical point of view, HLD is an upgraded version of LED, which improves the overall brightness by improving the luminous efficiency of the green part of the LED. Compared with the laser light source, its brightness still has no advantage, and its advantages in volume and cost are not particularly obvious, but it has a greater improvement in color expression than the original LED. It can be said that the HLD light source The color performance of the projector is indeed at the current high level and is much safer than the laser source.

　　In the low-end market, laser projectors do not exhibit the characteristics of high brightness. Instead, LED projectors maintain a consistent advantage in color performance and projection. In this market, LED projectors have a higher market share. Big. In the high-end market, the projection effect of the HLD projector adheres to the advantages of the LED projector, and the projection effect can satisfy the user's pursuit, but the hard damage of the brightness limits his use in some occasions. The laser projector has the advantages of high brightness and wide applicability, and the color expression is also very good, but the price is also a lot more expensive than the HLD projector. The current public opinion is that the future projector market is bound to be the world of lasers. In fact, this is unpredictable. The author believes that this depends on whether the brightness of the LED projector can be brighter and brighter, and the cost of the laser source can be lower and lower. Whoever solves the constraints of their respective developments will be able to occupy the future market first. Of course, this will also be affected by product volume, safety of use, and so on.

　　Finally, how to choose the author's recommendation, under the condition that both light source projectors can be applied, if the projection effect is not too different, the LED light source is a better choice. If the cost is not considered, the laser projector can be selected.