This kit includes all the necessary for make video projectors with panels tft of up to 15", refuse imitations.
The kit include:
- Fresnel lens 310 x 310 mm / 220mm focal (lamp location)
- Fresnel lens 310 x 310 mm / 330mm focal (Triplet obj location)
- Triplet obj lens 345mm
If you are not advanced user please reads the following:
This projection system is based on technology used in the first video projectors and OHP projectors, has simply advanced a little but adding two fundamental elements: the first of them, the hqi lamp of high duration, these lamps allow 15.000 hours lamp life they also the spare lamp is really cheap, less 40EUR to replace, and relatively easy of giving in almost any place because they are lamps very used in most of the local stores.
This lamp provides white light 4000ºk, much bigger that offered for example by a halogenous lamp, yellow light 3000ºk. They also warm less than the half that a halogenous lamp with the same power in watts and reproduce triple of brightness that a halogenous lamp, the HQI lamp is very similar to the xenon bulbs and use the same system of discharge of gas.
The development of projector with this kit is relatively easy and don't require technical experience, only some notions of: bricolage, electricity and time. An important fact that never fails: while more hours more better results.
The follow scheme is for a configuration of 15" TFT:
Users that have already built their own projector: