Glass-plastic hybrid lens

A lens and plastic lens technology, applied in optics, instruments, optical components, etc., can solve the problems of left volume, high cost, few high-quality lenses with super large aperture, etc., and achieve weight reduction and small field curvature and astigmatism, good resolution effect

Pending Publication Date: 2019-09-24
舜宇光学(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the high image quality and large aperture lenses on the market are F1.4, and few lenses reach the large aperture of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0078] based on figure 1 The shown lens configuration is used to illustrate this embodiment.

[0079] The parameters of the camera lens in Embodiment 1 are as follows:

[0080] FNO=2.0; TTL / BFL=5.21; h / f=0.848; FOV=106°.

[0081] The following table 2 lists the relevant parameters of each lens of the present embodiment, including the refractive index of surface type, radius of curvature, thickness, material, Abbe number and conic coefficient:

[0082]

[0083] Table 2

[0084] In this embodiment, the aspherical data are shown in Table 3 below:

[0085]

[0086] table 3

[0087] Figure 2 to Figure 5 Respectively schematically represent the MTF diagram of the glass-plastic hybrid lens of this embodiment under normal temperature 20°C and visible light; the Through Focus MTF diagram of 125 lp / mm under normal temperature 20°C under visible light; and the low temperature -40°C under visible light 125 lp / mm The Through Focus MTF diagram of 125lp / mm under visible light at...

Embodiment approach 2

[0091] Image 6 It schematically shows the structural diagram of the glass-plastic hybrid lens according to the second embodiment of the present invention. The description according to this embodiment is as follows:

[0092] The parameters of the camera lens in the second embodiment are as follows:

[0093] FNO=1.0; TTL / BFL=4.85; h / f=0.606; FOV=80°.

[0094] The following table 4 lists the relevant parameters of each lens of the present embodiment, including the refractive index of surface type, radius of curvature, thickness, material, Abbe number and conic coefficient:

[0095]

[0096]

[0097] Table 4

[0098] In this embodiment, the aspherical data are shown in Table 5 below:

[0099]

[0100] table 5

[0101] Figure 7 to Figure 10 Respectively schematically represent the MTF diagram of the glass-plastic hybrid lens of this embodiment under normal temperature 20°C and visible light; the Through Focus MTF diagram of 125 lp / mm under normal temperature 20°C und...

Embodiment approach 3

[0105] Figure 11 It schematically shows the structural diagram of the glass-plastic hybrid lens according to the third embodiment of the present invention. The description according to this embodiment is as follows:

[0106] The parameters of the camera lens in the third embodiment are as follows:

[0107] FNO=1.0; TTL / BFL=5.1; h / f=0.803; FOV=106°.

[0108] The following table 6 lists the relevant parameters of each lens of this embodiment, including the refractive index of surface type, curvature radius, thickness, material, Abbe number and conic coefficient:

[0109]

[0110] Table 6

[0111] In this embodiment, the aspherical data are shown in Table 7 below:

[0112]

[0113] Table 7

[0114] Figure 12 to Figure 15 Respectively schematically represent the MTF diagram of the glass-plastic hybrid lens of this embodiment under normal temperature 20°C and visible light; the Through Focus MTF diagram of 125 lp / mm under normal temperature 20°C under visible light; a...

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Abstract

The invention relates to a glass-plastic hybrid lens, and the lens consists of a glass lens and a plastic lens, and comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a diaphragm (S), a fifth lens (5), a sixth lens (6), a seventh lens (7), an eighth lens (8) and a ninth lens (9) which are sequentially arranged along an optical axis from an object side to an image side, wherein the first lens (1), the second lens (2), the fifth lens (5) and the ninth lens (9) are negative focal power lenses; the third lens (3), the fourth lens (4), the sixth lens (6), the seventh lens (7) and the eighth lens (8) are positive focal power lenses. The glass-plastic hybrid lens provided by the invention has the characteristics of ultra-large aperture, high pixel, small size and low cost.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a glass-plastic hybrid lens. Background technique [0002] At present, in the field of monitoring and control at night and under low-light conditions, infrared supplementary light is usually used to achieve imaging purposes, but the imaging range of infrared supplementary light is small and the color distortion is serious. In order to achieve better night imaging effects, the demand for low-light cameras is increasing. At present, most of the high-quality large-aperture lenses on the market are F1.4, and few lenses reach the large aperture of F1.2. And the size is usually on the left, the price is expensive, and there are few high-quality lenses with a super large aperture of F1.0. Based on the above market status, it is necessary to develop a super large aperture, high pixel, small size, low-cost optical lens in order to have a better imaging effect at night. Contents of the i...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18G02B1/04G02B1/00
CPCG02B1/00G02B1/041G02B13/0045G02B13/006G02B13/06G02B13/18
Inventor 陈伟蓝岚贺保丁邹文镔梁伟朝
Owner 舜宇光学(中山)有限公司
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