Long-focal-length optical system
An optical system and telephoto technology, applied in the field of telephoto optical system, can solve the problems of multi-lens, unfavorable marketing, increase of lens production cost, etc., and achieve the effect of good imaging quality, reasonable price and excellent image quality
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[0023] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are only for reference and description, and do not constitute a limitation to the protection scope of the present invention.
[0024] Please refer to figure 1 , a kind of telephoto optical system of the present invention, comprises in sequence along the incident direction of light: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5 and a sixth lens 6, wherein, The first lens 1, the second lens 2, the fourth lens 4, the fifth lens 5 and the sixth lens 6 are plastic aspheric lenses, and the third lens 3 is a glass lens, The first lens 1 is a concave-convex negative refractive power lens, the second lens 2 is a concave-convex positive refractive power lens, the first lens 1 and the second lens 2 are directly adjacent to each other through the edge, and the third The lens 3 is a double-convex po...
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