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自《家庭电子》2001年第3期46页刊登了《自制彩色液晶投影机》的文章后,广大影视爱好者纷纷来电来信询问有关问题并提出了许多改进的建议。为此,我们参考读者提出的建议并结合实际对原机作了较大的改进,极大地提高了可靠性及实用性,本文逐一介绍。一、光源:原机采用的是250W/24V低压卤素灯,此类光源价格低,易于制作,但其致命的弱点是寿命短、温升高、色温低,用其作为投影机光源,投影的图像亮度低,色彩偏黄且很难纠正。为此,我们改用新一代的高强度300W高压气体放电灯,具有温升低、色温高等优点,达到了投影机对光源的要求,投影的
Since “Home Electronics” 2001 the third period 46 pages published “homemade color LCD projector,” the article, the majority of film and television enthusiasts have a letter from the letter asked the relevant questions and made many suggestions for improvement. To this end, we refer to the reader’s suggestions and combined with the actual made a major improvement on the original machine, which greatly improves the reliability and practicality, this article one by one introduction. First, the light source: The original machine is 250W / 24V low-voltage halogen lamps, such light source is low cost, easy to make, but its fatal weakness is short life, high temperature, low color temperature, using it as a projector light source, projection Low image brightness, yellowish color and hard to correct. To this end, we use a new generation of high-intensity 300W high-pressure gas discharge lamp, with low temperature rise, high color temperature advantages to achieve the projector on the light source requirements, projection