Optical imaging lens
An optical imaging lens and lens technology, which is applied in the field of optics, can solve problems such as distortion and chromatic aberration, easily affecting image quality, and imperfect imaging lenses, etc., to achieve the effect of improving the viewing angle
Inactive Publication Date: 2016-03-30
CALIN TECH
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Problems solved by technology
[0004] In addition, the imaging lenses currently used in mobile devices are gradually developing towards wide-angle, but wide-angle systems often have problems such as insufficient viewing angle, distortion and chromatic aberration, which easily affect the image quality
Therefore, the design of the existing imaging lens is still not perfect, and there is room for improvement
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[0049] In order to illustrate the present invention more clearly, the first to fourth preferred embodiments are cited below and cooperate respectively figure 1 , image 3 , Figure 5 and Figure 7 , as detailed below. in, figure 1 Disclosed is the optical imaging lens 1 of the first embodiment of the present invention, image 3 Disclosed is the optical imaging lens 2 of the second embodiment of the present invention, Figure 5 Disclosed is the optical imaging lens 3 of the third embodiment of the present invention, and Figure 7 What is disclosed is the optical imaging lens 4 of the third embodiment of the present invention. Wherein, the above-mentioned optical imaging lenses 1-4 respectively include a diaphragm ST, a first lens L1, a second lens L2, A third lens L3, a fourth lens L4 and a fifth lens L5, the refractive powers of the places where the optical axes pass through are positive, negative, positive, positive and negative in sequence, and the mirror surfaces S2-...
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Abstract
The invention provides an optical imaging lens, comprising an aperture, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens which are arranged in sequence from an object side to an image side. The first lens is made of glass, and is a convex-concave lens with positive refractive power, the convex surface faces the object side, and the concave surface faces the image side. The second lens is a convex-concave lens with negative refractive power, the convex surface faces the object side, and the concave surface faces the image side. The third lens is a convex-concave lens with positive refractive power, the convex surface faces the image side, and the concave surface faces the object side. The fourth lens is made of glass, the refractive index of the fourth lens is greater than or equal to 1.7, the fourth lens is a convex-concave lens with positive refractive power, the convex surface faces the image side, and the concave surface faces the object side. The refractive power of the fifth lens gradually converts from negative refractive power to positive refractive power from the center to the edge of the fifth lens.
Description
technical field [0001] The present invention is related to optics; in particular, it refers to an optical imaging lens. Background technique [0002] In recent years, due to the vigorous development of mobile devices, the market demand for optical modules has been promoted. In order to provide the convenience and portability of mobile devices, the market generally hopes to develop towards miniaturization and light weight while maintaining quality. The advantages of miniaturization and light weight have also driven the demand of other application markets, such as the automotive industry, game machine industry, and home appliance industry, all of which have begun to use miniaturized optical modules to create more convenient functions. [0003] With the miniaturization of these mobile devices in recent years, the size of the above-mentioned imaging lenses used in the above-mentioned mobile devices has also been greatly reduced. In addition, due to the higher and higher pixel ...
Claims
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IPC IPC(8): G02B13/18G02B13/06G02B13/00G02B1/04
Inventor 徐淑娟
Owner CALIN TECH