Non-defocused optical wide-angle lens for projection display
A projection display and wide-angle lens technology, applied in optics, optical components, instruments, etc., can solve problems such as large number of lenses, lower customer experience satisfaction, failure of remote control and motor, etc., to reduce the volume of the optical system and improve optical transmission Ratio, projection brightness enhancement effect
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[0036] Such as figure 1 As shown, this embodiment uses 11 lenses, including 9 achromatic optical glass lenses and 2 achromatic optical plastic aspheric lenses. From the projection screen side to the display chip side, there are the first lens group, the second lens group and the TIR prism in sequence. The first lens group 1 described in this embodiment is sequentially arranged from the projection screen side to the display chip side with a first lens 01 with negative power, a second lens 02 with negative power, and a third lens with negative power. 03, the fourth lens 04 with positive refractive power, the fifth lens 05 with positive refractive power, and the sixth lens 06 with negative refractive power. Among them, the first lens 01, the second lens 02, and the sixth lens 06 are concave lenses curved toward the projection screen, the third lens 03 is a double concave lens, and the fourth lens and the fifth lens are double convex lenses. The second lens group 3 is arranged in ...
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