DLP projector Totale secret - color wheel dust technology

If the life of the light source is the assessment of the useful life of the projector, then the dust is not doing well, it will affect the projector long-term work 'face' performance.Compared with the projector than the person, healthy people can be longevity However, if you suffer from chronic diseases in the middle, your body will be damaged and your face will age. Your life will naturally shrink.

Although DLP projectors do not suffer from the problem of heat aging compared to LCD projectors, their lifespan is relatively prolonged, but the 'youthful move' to enhance the dust-proofing effect for projector imaging is still a project requiring full packaging , Such as the color wheel on the key components of the DLP projector quite learned.

(Red frame position for the color wheel)

The color wheel is in the semi-enclosed position inside the projector. Even if the filter blocks most of the dust, a handful of 'slippery' fish will still invade the interior and await the opportunity to attach the color wheel surface so that the imaging effect will be greatly reduced. In this case, even if the light source is normal, The rapid deterioration of the quality will also cause difficulties in using the specific impact of three:

First, high-speed running around the color wheel will be entangled with tiny dust particles, coupled with the work of electrostatic adsorption, the color wheel is like 'bee lead the butterfly' prodigal, white wheel cling to the dust on the brightness of the block, the other colors Paste the dust on the block to gradually decay the color;

(The left picture shows the effect of gradually declining brightness and color)

Second, dust intrusion into the color wheel sensor causes the motor to run erratic, and then the picture jitter, long-term picture quality is poor, the projector life is shortened;

Third, the dust into the light machine, attached to the optical components, the screen will appear bright spots, is tantamount to 'disfigured' scene.

(Projection screen appears bright spots)

So DLP projector screen in order to artistry, color wheel dust protection technology worthy of attention.For example, BenQ education projectors, for the declining air quality and dusty teaching environment for the color wheel sensor innovative to provide two kinds of defense Dust program.

First, the use of magnetic sensing magnetic induction color wheel, the use of Hall effect detection of magnetic field density changes to determine the color wheel rotation is no longer affected by fouling, magnetic induction color wheel response rate of up to 100W Hz, anti-vibration, oil, Not afraid of water vapor, greatly enhance the projector's image stability;

(Magnetic induction color wheel signal received from the dust barrier)

Second, the convex design of the convex infrared color wheel sensor, compared with the concave sensor traditional DLP projector is not easy to foul, infrared signal is more sensitive to receive, projection quality out of 'color' is still.

(Convex magnetic induction color wheel)

Nearly 1,000 BenQ educational short-throw projectors purchased by National Institute of Science and Training in 2016-2017 have been designed to provide classroom stability with dust filter and convex color wheel design. They not only hold the projection screen, Reduce maintenance costs of late maintenance, daily teaching go in the door.

(Beijing learning and thinking institutions classrooms installed BenQ projector)

Today, more and more education purchasing department will dust into the core assessment indicators, the dust extra emphasis, behind the urgent needs of the real environment.In order to meet the actual needs of users in the field of education, BenQ will continue to include color wheel anti Dust, dust-proof technology, in-depth research and development, the technical efforts of every point, from every point of the user intimate consideration.