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Image shooting lens

A lens and lens technology, applied in the field of imaging lenses, can solve the problem that imaging lenses cannot take into account miniaturization and high optical efficiency, etc.

Inactive Publication Date: 2013-04-24
ASIA OPTICAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an imaging lens that can not only achieve the purpose of miniaturization but also have high optical performance in view of the defect that the imaging lens in the prior art cannot take into account miniaturization and high optical performance.

Method used

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Embodiment Construction

[0021] In order to illustrate the present invention more clearly, preferred embodiments are given and described in detail with accompanying drawings as follows.

[0022] see figure 1 , is the lens configuration diagram of the imaging lens 1 in the first preferred embodiment of the present invention. figure 2 for figure 1 Optical diagram of the illustrated embodiment. Cooperate figure 1 and figure 2 , the imaging lens 1 of this embodiment will be described in detail below.

[0023] The imaging lens 1 includes a first lens L1 , a second lens L2 , a third lens L3 , an aperture ST, a fourth lens L4 and a fifth lens L5 arranged in sequence along the optical axis Z from the object side to the image side. In addition, there is a color filter CF (Color Filter) between the fifth lens L5 and the image side, which is flat glass, and its functions belong to the prior art, and will not be repeated here. in:

[0024] The first lens L1 is made of plastic material. The first lens L1...

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Abstract

The invention relates to an image shooting lens which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, and the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arrayed along an optical axis from an object side to an image side. The first lens is a biconcave lens which has negative refractive power and made of plastics, and at least one face of the first lens is an aspheric surface. The second lens is a biconvex lens which has positive refractive power, and the second lens is made of glass. The third lens is a biconcave lens which has negative refractive power and made of glass. The fourth lens is a biconvex lens which has positive refractive power and made of plastics, and at least one face of the fourth lens is an aspheric surface. The fifth lens is a meniscus lens which has negative refractive power, and the convex face of the fifth lens faces toward the image side. The fifth lens is made of glass.

Description

technical field [0001] The present invention relates to a lens, and more specifically refers to an imaging lens. Background technique [0002] In recent years, with the advancement of science and technology, image capture devices such as microscopes or scanners have gradually tended to be miniaturized and lightweight for the convenience of people's use. Therefore, it is greatly reduced. In addition, in addition to miniaturization and light weight, higher optical performance is also required to achieve high-resolution and high-contrast display. Therefore, miniaturization and high optical performance are two indispensable elements for imaging lenses. [0003] However, in order to achieve high optical performance, the imaging lens used by the current image capture device is nothing more than using multiple lenses, even more than ten lenses, which cannot effectively achieve the purpose of miniaturization. In addition, for the purpose of miniaturizing the imaging lens, less th...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
Inventor 陈俊宏
Owner ASIA OPTICAL CO INC
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