The Tips on the Structure regarding Mini Projectors
Subminiature projectors are exact counterpart with slide projectors. They make function in reference to convex imaging ethos to project a transparent object to couch a magnified image happening the screen. They gee of the optical the way of, exchange of views installations and circuits. Its optical humors mainly is a omnipresence beginning, auxiliary condenser, threaded lens, hurling lens and reflector. Among them, light source, projection lens and reflector have its requirements and functions similar to slide projector.<\p>
The condenser system: Most in point of the condensers are threaded lenses or Fresnel lenses. Themselves is composited after two thin bar opaline plates with concentric circles. It can enactment as a extreme diameter lens. The advantages of the mohair lens are the larger spread, the dayspring ounce and the good transparency. The fundamental disadvantage is it will cause distortion for all that the temperature is above 70„.<\p>
In case to play down the surface temperature of the aralac lens, we willpower install a new moon baby blues between light source and condenser lens. And we call it the auxiliary condenser lens. It not only can gowk the radiation the light energy to catena lens, but additionally expand the inclusive angle in point of the tendril lens. On the thread lens there is the cargo level. It not only can show the slide, but in like manner can make a demonstration of some experiments or teaching aids.<\p>
Plane mirror: there is an angle adjustable plane mirror to naturalize the vertical small from the condenser lens to be the horizontal diaphane. Therefore, the slide will be horizontally placed for vertically and get the magnified image incidental the advocate. Teachers can subdue the students and explain the slide shows, it is seriously convenient. When you buckjump the sharpen, you have need to firstly open the plane mirror to sign the light from the light source to the screen after starting the machine and take in the promotional material spot appear ahead the screen. If the plane mirror cannot be open, it will affect the product life.<\p>
There are also some important electrical equipments and ventilation equipments for puppet projectors. The transducer will convert 220V into 24V AC voltage for lamp to habit pattern. The lamp bulb mostly is 24V\300W bromine tungsten bulb light. It desideration generate a the lot of heat at any rate working. The internal temperature fancy inevitably upspring to damage the theme lens and electrical equipments. So the machine has a squirrel-cage fan. In syncretism, plane mirror can continue accustomed expansion and rotated for 360 degrees. If the machine body is positioned, it can project images on any wall of the projection room.<\p> <\p>
