Green Projectors: LED Light and Laser Technology

While display industry seems to see vigorous development for the past decades with its continuously growing applications for mobile devices , the projection scene is no less entertaining, if not dynamic. For the recent few years, projector manufacturer obviously tries their best to compete with both other manufacturers and display manufacturers too. They no longer make the projector for the sake of the projection alone or single functionality. Instead, they start to look more into integration with other audio visual systems or digital devices to help increase productivity of users in diverse applications. For one, it has been a prevalent trend for many projector manufacturer sto introduce green projectors. The term green projectors itself is first coined to christen new Casio projector which features hybrid unique light sources: laser technology and LED light instead of the conventional lamp technology. At its very core, green projectors can be defined as projectors which promotes high energy saving, environmental-friendly projectors which leverages on greener innovations such as LED light and laser technology as light sources. Up until now, there has been already a number of projector manufacturers who dig into the green projectors including Casio, BenQ, Panasonic, Sanyo, and Sony.

Albeit the different technology used for the light sources, the green projectors indicate no whatsoever compromise on the performance. In fact, some manufacturers such as Casio and Panasonic claims that their green projectors offers much better performance than its standard lamp-based projectors. And believe it or not, the green projectors have better performance than its lamp-based counterparts because of the core technologies which is the lamp versus LED light and laser technology. To begin with, the conventional lamp as light sources for traditional projectors consistently lose its charm due to its high maintenance cost and shorter life span. It is because the lamp have certain lifetime depending on the usage pattern and projection mode used, often described in hours on the specification sheet. The longer you use the lamp, the dimmer it will be until you have to replace it with the new one. In other words, users will have to allocate regular maintenance cost for lamp replacement. In contrast, green projectors which are based on LED light and laser technology does not have any lamp to replace; virtually reducing the maintenance cost and hassle to replace the light sources after some time.

Performance-wise, green projectors also ensures more reliable and quality projection performance with the LED light and laser technology than the lamp-based counterparts. it is common that lamp-based projectors will see lower brightness and thus less optimal performance as time goes by because of the short-life lamps. On the contrary, the duet of LED light and laser technology seem to power the green projectors itself as they are able to maintain the same brightness over time and thus consistent projection performance. That aside, green projectors also manage to improve the issue of product life span and power consumption. As mentioned earlier, standard lamp-based projectors are likely to have shorter life span because of the lamp. Not only users have to replace the lamp after some time, but they also have to consider the impact of irregular performance of the lamp to the projectors itself. Simply put, the lamp-based projectors will output the highest brightness possible when they are still new and gradually have it cut down with the shorter lamp life. As such, the projectors may undergo invisible issues with the heat, noise, and thus overall lifespan. Green projectors, in contrast, indicates longer lifespan as both LED light and laser technology have better energy management capability. In particular, the light output is delivered in the right intensity and amount accordingly for optimal projection, instead of super bright regardless of other factors such as the environment or ambient light.

Next, green projectors are also touted to provide users with lower power consumption as opposed to the standard lamp-based projectors. While standard lamp-based projectors do come with energy saving features such as Eco mode to help extend the lamp life and reduce power consumption, the results seem not very promising or bring significant impact on carbon saving or operating costs. Green projectors, on the other hand, relies on the core technologies itself to reduce the power consumption, instead of energy saving features. LED light has been around for some time and have gained a very good reputation for its capability in delivering high quality images while keeping the power consumption low. Everyone may have different image in their minds when it comes to ideal projectors. But with all of its good qualities, green projectors deserve to be put in your top list, especially if you look for a long-period investment.

High Performance, Low Maintenance

Best projection and high performance is the first quality most people look from projectors. Green projectors in general not only meet but rather exceed their expectations with LED light and laser technology as light sources for ensured high performance for every applications. In the first place, the duet of LED light and laser technology is considered a better performer than average projector lamps because it is able to deliver high brightness projection consistently and in extensive time. Unlike with single source light, projectors leverages on blue LED light to create blue laser which is then used to create green light, and finally combine the result with red LED light to produce the light output. With this mechanism, the light output is cleaner and brighter with accurate vibrant colors. Despite the brighter and better light output, the green projectors run on relatively normal temperatures as compared to the standard lamp-based projectors which usually runs hotter when display high brightness. And with the hotter temperatures, there is often high noise as well, which is practically non-existent with the green projectors whose LED light and laser technology will emit heat and noise as low as possible.

To users advantage, green projectors also require low maintenance, again thanks mostly to the LED light and laser technology as its light sources. With no lamp installed, there is no need for users to clean or replace the filter or lamp to get the optimal projection. As such, users can also cut down on both maintenance and operating cost of their overall system. And with the fact that green projectors have better energy management, they also tend to last longer with minimal downtime or components damage which is common with the lamp-based projectors caused by overheat issues. All in all, the green projectors are certainly a worthy investment for applications such as business and education segments which require uncompromising performance for extended use. Looking at all the benefits green projectors have to offer diverse projection market, we will be seeing more and more projectors which relies on LED light and laser technology instead of lamps in the near future.

(Date: 02 May 2013; Lidya)

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