working of Projector

1. PROJECTOR
WORKING OF LCD PROJECTOR
• The video projector contains LCD
panels. At the center of projector
is a halogen bulb which is
surrounded by panels.
• The panels produce light. As the
halogen bulb heats up the crystal
melts and allow more light to
pass through. Hence the
intensity of halogen bulb brings
about the difference in tones.
• Higher the temperature of bulb, lighter the tone and vice-versa.
• Images travel to the tube present inside the projector from DVD player or satellite box.
• These images in turn bounds on a screen that is coated with phosphorous. Every
fragment of light hitting the screen is termed as Pixel.
• On hitting the screen, the pixel breaks down into its color components i.e., red, blue, or
green.
• The heat produced by halogen, bulb is controlled by voltage that flows into LCD video
projector.

ADVANTAGES OF LCD PROJECTORS
• Enable a lot of people to be able to see something even from a distance.
• They also produce sharper images.
• They also have an edge in light efficiency.
• They generate largest possible image size.
• They can be used to throw smaller images a great option also. So it can serve as an
inexpensive.

2. • Low cost.
• Space saving.
• Easy to install.

DISADVANTAGES OF LCD PROJECTORS
• Image quality may not be as good as projected.
• Dark room often required.
• Maintenance required.
• Installation can be more involved.
• Separate audio system required.
• The pixels on the chip can burn out. When one pixel burns out, you wont be able to
repair it. You will have to replace the whole chip.