Projector lamp replacement free era ─ laser and LED bulbs - Corporate Blog - About

August 29, 2013 – 00:35

LED bulbs I believe we are all familiar with,energy saving,low heat,long life and other advantages it has gradually replaced the general in our daily life bulbs.Production on the projector,there have been a few years ago LED projector; everyone may be able to find it very strange,since the LED so good,why in recent years,LED projector does not completely replace the old high-pressure mercury lamp projector?

We come back later to answer this question; from the previous to the present,many consumers want to buy the projector will be considered to "LAMP" consumption issues.Because the projector lamp is used in life limits,about the use of thousands of hours after the lamp must be replaced,while a projector lamp price of up to $ 5, 000 or so!Would be so expensive because the projector lamp bulbs for general lighting purposes not,it is a high-intensity discharge (High-intensity discharge,referred HID) bulbs.Yes,that is used in advanced automotive headlight HID technology.

HID also subdivided into many types below,so the projector lamp and car HID headlights are not identical,but the technical level is the same principle,played through both ends of the electrode arc pressure,the gas within the bulb and metal heating plasma state to emit high brightness light.The projector uses a high-pressure mercury bulb inside the glass bulb filled with high-pressure mercury and mercury is heated to plasma state to emit light.Therefore able to meet up to several thousand lumens projector with high brightness requirements; But disadvantages are also obvious,including the larger,higher temperatures,shorter life expectancy and so on.

The picture shows the I-MAX projector uses a lamp

(Picture from Wikipedia)

Back to the beginning of the problem,why the LED projector market has not fully replace the high-pressure mercury lamp?The main reason is the demand for LED brightness has its limitations,and its high-brightness low efficiency will find a few years ago almost all LED projector only a few hundred lumens brightness of 1, 000 lumens is not,almost all use the mini projector models above.Of course,due to technological advances,the current LED brightness compared to a few years ago has also been some improvement.

In addition,the colors projected by the projector screen is composed of three primary colors of red,blue,green,and the green LED light output efficiency in technology has problems too low,forcing the LED red and blue light must match the green,and then drag the overall output efficiency.

Therefore,ViewSonic Pro9000 home theater machine is especially used laser and LED double light source design; With blue laser through the phosphor material is converted to green,green LED to overcome the problem of low efficiency,coupled with the red and blue LED form a complete RGB light source to replace the traditional high-pressure mercury lamp.Reach 1, 600 lumens of brightness,as well as 20, 000 hours lamp life,almost no need to replace the light bulb!

Also has 1080p Full HD resolution,100, 000:1 high contrast so that colors are sharper; signal input side owns two HDMI port.Give you the best home theater enjoyment.

Source: www.viewsonic.com.tw

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  • Avatar AnnG How do you work on old fashion overhead projector?
    Sep 07, 2007 by AnnG | Posted in Teaching

    I picked up an old fashion 3M overhead projector at an auction. I would like to show some of my old family photos on the wall with it at a family reunion as well as some old childhood drawings on construction paper that are done with crayon. Can you tell me how to run this machine so it shows up on a wall. Thanks!!

    • If it is an opaque projector that will work fine, but I suspect that you have a transparency projector, which is common. I have one in the room down the hall. A transparency projector, the one with the light below a glas …of bright light onto the images, and don't turn on the lamp on the projector. In a dark room the images will show up if they are bright enough - like with a few desk lamps shining on the photo. Again, watch out for fire.

  • Avatar Benjamin How do I change the bulb in my Bell & Howell Model 1707 Overhead Projector?
    Oct 29, 2011 by Benjamin | Posted in Other - Electronics

    I am looking for any help possible about how to change the light bulb in a Bell & Howell Model 1707 Overhead Projector. If you know what bulb to put in also that would be great!!

    • There seem to be two different Bell & Howell 1707 projectors that use completely different bulbs.

      The "1707AJF" uses an ENX. It is a current model, or at least was in the 1999 resource below. T …h the glass bulb unless you hold it with a paper towel, or the plastic bag the lamp comes in, to push the new lamp in. If you do touch the glass bulb you should clean it with alcohol and let it dry before powering it up.