Micro-projection lens
AssigneeAsia Optical Co., Inc.
InventorsYu-Hsiang Huang, Chun-Hong Chen
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Abstract
The present invention provides a micro-projection lens including first lens group, a second lens group, and a third lens group arranged in sequence along an optical axis from a screen side to a light modulator side. The first lens group has positive refractive power and includes at least an aspheric lens. The second lens group has negative refractive power and includes at least a glass tablet. The third lens group has positive refractive power and includes at least an aspheric lens. Therefore, the micro-projection lens of the present invention has a small size and high optical performance.
Claims8
A micro-projection lens comprising first lens group, a second lens group, and a third lens group arranged in sequence along an optical axis from a screen side to a light modulator side;
- the first lens group having positive refractive power and including at least an aspheric lens;
- the second lens group having negative refractive power and including at least a glass tablet;
- the third lens group having positive refractive power and including at least an aspheric lens.
Dependencies are inferred from the claim text.