DIY projector making really strange, LED light source only do projector enthusiasts absurd DIY projector with LED light source projector light source can be done without changing 5-year projection lamp. Thinking about what color temperature to the color temperature, like warm to warm, like cool to cool, like the white? No problem! Products everywhere you want! Cold light source is pure, free of ultraviolet, infrared free , low voltage power supply, what cooling fan, what high-voltage circuit, what the temperature sensor, what overload protection, all went to hell does not it! Its only flaw is strong enough, however, the number can be used to make up for strength, not a led, 1000 fill enough?!
LED light source and the difference between the traditional projector lamp:
Work
Traditional light sources: the traditional projector lamp is basically a single point light source, light intensity, light emitted from the light source, after reflector, condenser lens, Fresnel lens, be provided to the LCD panel used.
LED light source: the composition of the surface by a number of LED light, luminous intensity single LED light source is relatively low with a single tradition, but the advantage of volume and structure to make up for lack of luminous intensity. Light, directly or only through Fresnel lens, can be used.
Voltage and temperature
Traditional light sources: hundreds or even thousands of volts, the light source thousands of degrees internal temperature.
LED lighting: low, as low as a few volts, and even can be used to directly drive batteries, working temperature as low as room temperature.
Heat and high voltage circuit
Traditional light sources: the need for rigorous thermal design, high voltage circuit.
LED light: almost no thermal design, or simply thermal design, no high voltage circuit.
Life
Traditional light sources: usually a few hundred to several thousand hours.
LED light: more than 50,000 hours (if you can play 24 hours a day in five years time!
Light utilization
Traditional source: the source space to the 360-degree scattering, only 10-20% of the light is used effectively.
LED light source: light emitted to the front only, almost fully utilized.
Energy consumption
Traditional light sources: 150 watts or more, the average home projector at 250 watts.
LED light: 10 watts to work, I have made about 10 watts of products, the assembly out of the projector in a dark room can be clearly displayed image brightness is estimated to achieve the same effect, only the traditional power of the projector light source 20 % -50%.
Harmful rays
Traditional light sources: contains infrared, ultraviolet and other harmful rays, infrared temperature will cause the LCD panels, LCD panels also need thermal design, result in UV ablation LCD panels, LCD panels of life.
LED light: no infrared, ultraviolet. LCD panels do not need thermal design, light had little effect on the LCD panel.
The design of the projector
Traditional light sources: the need to consider the complex thermal design power strong fan, high pressure design, protection circuits, sensing circuits, optical design.
LED light source: the power of the larger cases, only need to consider the simple thermal design, heat sink for heat dissipation problem can be solved without the need for high-voltage protection, temperature sensor design, greatly simplifies the optical design.
Maintenance costs
Traditional light sources: the need to consider the complex thermal design power strong fan, high pressure design, protection circuits, sensing circuits, optical design.
LED light: light can be emitted light path after all the seals, no optical path clean.
The use of cost
Traditional light sources: the shorter life expectancy, use of high cost, the purchase price divided by the use of time, converted to 1 yuan / hour.
LED light source: light source life span longer than or equal to the life of the projector, the use of cost close to 0.
Light sources: 16 * 12 = 192 bright led, each of 3.3v, 20ma, total power 13 watts, with computer switching power supply, the case of a load, the voltage drop, the measured voltage 11.04V, current 1.03 A, current-limiting resistors consume less power, measured the total power led does not exceed 10 watts!
LED light source using the projector to do with so many benefits, so do the projector's results so far? How to install the projector at it?
The projector installed in a cardboard box the printer by the led light board, a light source and the Philippines between the mirror LCD panels, LCD panels, lenses, composed of four parts, even the box the total weight of 1 kg.
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