For a long time, Projector Product has been using a metal halogen bulbs and high pressure mercury lamp as the basic Light source Products. The advantages of metal halogen bulbs cheap, disadvantage is the short half-life, the general brightness of 1000 hours will be reduced to about half of the original, and because of the high heat, heat the system requirements on the projector high, not so long (more than 4 hours ) projection to use, it has been used in some of the main low-end products. Mercury Lighting Have developed simple, simple structure, easy control characteristics, is currently the mainstream of the projector light. However, high performance, high-color, high brightness and long life, long working stability of the mercury is not easy. But the situation in 2009, a huge turn initiation shift. In this year of two solid-state LED and laser light source Technology The projector has been useful, so long projector products disturbed the problem of high maintenance costs may be resolved. Conventional mercury lamp light source may face from the historical stage. The projector light sources to change the final product may also override the projector industry, "industry rules."
Either laser or LED projector, its biggest feature is a long life. Two kinds of light break through the shortest life expectancy 20,000 hours, the longest life expectancy of more than 100,000 hours to support the application, which makes products essential to leave projection Consumables Times. And both are cold light source, high luminous efficiency, the theoretical value more than three times in the mercury lamp, the projector can greatly simplify the thermal design. It is because all the advantages of solid state light sources, making them appear to be a projection of the limelight Future Star.
However, with the two kinds of practical solid-state light sources, the competition between the two have quietly started slowly. LED light source support for people who think, LED light source life long, can reach tens of thousands of hours, but almost no brightness attenuation, low power consumption, small achievements of the heat, reducing the projector's cooling problem. To support laser light sources believe that the laser light in addition to long life, there is a wider color gamut, the color is more beautiful, can eliminate the reflection within the projector and condenser equipment advantages. Of course, they each have their own disadvantages between the two.
Although the advantages of LED light source as a large projector, but it also has obvious flaws. LED projector brightness is troubled by one of the biggest popularity. Although the market has up to 1000 lumens brightness LED projector above products, but the brightness for everyday applications, especially business applications are far from adequate; but even relatively low-brightness LCD projector, which often can easily break 2000 lumens, compared to LED light source, clearly advantages to be much more. To increase LED brightness, the best way is to increase the number of LED light, that is, we know the dot matrix LED light source arrangement, as long as the number of sufficient brightness can be increased exponentially. However, as a projector light source, its size can not be too big, and it will also cause the price of LED light up, make the same product cost increase, which nearly lost the front of what we call most of the LED advantage.
Constraints laser projector now the biggest problem is the security risk, especially in the open space, the problem worse. The laser pointer is the simplest example, the laser pointer is inside a semiconductor laser, an optical front Shot To focus. Everyone knows not to direct rays of laser light eyes, this is because the laser energy is concentrated, so very harmful to the human body. For example for the theater Vanadate laser, maximum power can reach 20W, luminous flux up 5000lum, are four lasers, if there is Nosey take a lens, it is possible to burn things a certain distance. A 150mw laser at 1 m can be easily burned away we usually use Plastic Film bag, a number of industrial cutting machine laser power much better than this.
Ever, LED and laser light source supporters, and often get attacked each other's weaknesses, like fish and eat it really can not have both. But in fact, LED and laser light source can have both of the two.
Casio XJ-A255 mixed light projector On at the CES2010, Casio has a use on the display LED + laser projector series GreenSlim the latest series of projectors. This series of projectors with ultra-thin design, the main selling point is the use of LED and laser technology, a series of Environmental protection Concept. Casio's series of new products in the application of the LED light source and two laser technology, high brightness effect, which is very very concerned about the technical features. Casio projectors have 9 new series of products, models include the XJ-A255, XJ-A250, XJ-A245, XJ-A240, XJ-A155, XJ-A150, XJ-A145, XJ-A140, XJ-A135, XJ- A130, from 2,000 to 3,000 lumens brightness, resolution, include a mainstream XGA and widescreen 1280 × 800, contrast ratio of 1800:1. This series of new products will be gradually introduced.
Casio This innovative projector manufacturers move to open up new ideas. In the brightness of the LED light source to avoid a net to bring the problem of insufficient brightness, but also good to reduce the security implications of laser projection, to achieve a coexistence of the two compatible, complementary advantages. LED and laser light source in the popularity of the situation is not good, the two hybrid technology may be able to some extent compensate for this time period on the vacuum, become a new trend. I am an expert from China Crafts Suppliers, usually analyzes all kind of industries situation, such as momo steering wheel , cardan joint.
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