Building Your Own LCD Projector

Do-It-Yourself LCD Projector 

For movies, gaming, karaoke and outdoor use

Materials Needed.
A> Lenses
1. Projection lens- Magnifies the image of the lcd
2. Fresnel lens
a. Field fresnel – Converged the lighted image of the lcd to the projection lens
b. Collimator fresnel- Focuses on the lamp. Collects the light from the lamp and transmit parallel light rays to the lcd.
3.Front surface mirror-optional
4. 12v dc power supply for fans and lcd-use pc power supply

B>Light Engine
1. Metal halide bulb- 150w -250w: high lumens/ color temperature bulb
2. Ballast- Controls the power delivered to the lamp
3. Capacitor- Power factor corrector. power saver
4. Ignitor- Start up the lamp creating 3.4kv sparks to fire the chemical inside the lamp
5. Reflector- Recovers wasted light from the lamp
6. Condenser lens – Increase light collecting efficiency and divert more light to collimator fresnel
7. IR/UV filter- reduce temperature of lcd created by heat /infrared radiation generated by the lamp. Reduce UV rays to prevent discoloration of lcd.

Others
1. Front surface mirror- bend the light to make the box smaller
2. 2-units blower fans – cool down all the parts inside the projector
3. Fan grill- use for mounting parts of the light engine
4. bolts and nuts of diff sizes