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Showing posts with label Projector. Show all posts
Showing posts with label Projector. Show all posts

Sunday 23 December 2012

How to Make a Cheap Projector,How It's Working

A projector works by transmitting an image through a lens that is then viewed on a screen or some sort of flat surface. You can make a cheap projector from the LCD screen of a broken laptop and an overhead projector. You will also need a few tools commonly found around the house, but no special electronic or mechanical skills. Your cheap projector will project a video image, although the quality will not be equal to that of a projector using expensive optics and electronic components.

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How to Make a Cheap Movie Projector At Home

 
How to Make a Cheap Movie Projector thumbnail
There's something about the big screen that makes you feel like part of the action. That's why movie rentals will never take the place of trips to the theater. The only thing that might is your own movie projector. Trouble is, front and rear projection TVs are priced , according to Wiley Publishing (publishers of the "Dummies" guides). They're also hard to move and expensive to repair. This makes them a poor choice if money's tight. The good news is DIY enthusiasts like InventGeek.com's Jared Bouck have spent less money to get similar results with an overhead, LCD panel, screen and some construction supplies.

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How to Make a Homemade Movie Projector

instructions

Connect your DVR, DVD player or VCR to a TV with a 19- to 23-inch screen. Use the best connection possible: HDMI, component, composite or RF coaxial.
Build a cardboard box frame that will contain your TV screen. The frame should be the screen's height and width and about 45 centimeters long. Paint all the cardboard pieces black before taping them together. Tape the box to the screen, making sure no light escapes through any cracks.
Cut another cardboard piece the same size as the TV screen. Cut a 17-centimeter hole into the piece and attach a fresnel lens. Place this piece containing the lens into the projector frame.Place the TV upside down on a table or stand, as the lens will invert the image. Point the monitor toward a blank wall and play a video. Adjust the TV's location until the projected image is the size you want, and then adjust the lens inside the projector until the image is in focus.
Connect the projector assembly to a sound system if you're not using a TV or you don't want to use the TV's speakers. Connect the video source (e.g., DVR, DVD, VCR) to a surround sound system or another speaker set.


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