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optical lens system

An optical lens and lens technology, applied in the field of optical imaging, to achieve the effect of strong light transmission ability, good imaging effect and high imaging definition

Active Publication Date: 2019-09-10
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, among the existing technologies, none of the optical lenses currently on the market can well meet the above requirements. Therefore, it is urgent to develop a high-performance optical lens that can cooperate with unmanned driving.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0086] see Figure 1a , shows the structural diagram of the optical lens system in the first embodiment of the present invention, which includes in order from the object side to the imaging plane: the first lens L1 with negative power and the concave surface facing the object side; the stop ST; The second lens L2 with positive power and convex surface on both sides; the third lens L3 with positive power and convex surface toward the object side; the fourth lens L4 with positive power and convex surface on both sides; negative power and The fifth lens L5 whose both sides are concave, and the fourth lens L4 and the fifth lens L5 form a cemented lens; the sixth lens L6 with a positive refractive power and a convex surface facing the object side and a concave surface facing the image side; a negative refractive power and a seventh lens L7 with a concave surface facing the imaging surface; and a filter G1.

[0087] Wherein, the first lens L1 , the third lens L3 , the fourth lens L4...

Embodiment 2

[0132] see Figure 2a , shows the structural diagram of the optical lens system in the second embodiment of the present invention. The difference between the lens structure provided in this embodiment and the first embodiment is that: (1) the first lens L1 is a lens with concave surfaces on both sides , the third lens L3 is a lens with a convex surface on the object side and a concave surface on the image side, and the seventh lens L7 is a lens with a convex surface on the object side and a concave surface on the image side; (2) the stop ST is located between the second lens L2 and the third lens L3; (3 ) The second lens L2 is a glass spherical lens; (4) The relevant parameters of other lenses are different, and the specific relevant parameters of each lens are shown in Table 2-1.

[0133] table 2-1:

[0134]

[0135]

[0136] Please refer to Table 2-2, which shows the aspheric parameters of the seventh lens L7 in this embodiment.

[0137] Table 2-2:

[0138]

[01...

Embodiment 3

[0141] see Figure 3a , shows the structure diagram of the optical lens system in the third embodiment of the present invention. The lens structure provided by this embodiment is different from the first embodiment in that: (1) the first lens L1 is a lens with both sides concave , the third lens L3 is a lens with a convex surface on the object side and a concave surface on the image side, and the seventh lens L7 is a lens with a convex surface on the object side and a concave surface on the image side; (2) the stop ST is located between the second lens L2 and the third lens L3; (3 ) The second lens L2 is a glass spherical lens, and the sixth lens L6 is a glass aspheric lens; (4) The relevant parameters of other lenses are different, and the specific relevant parameters of each lens are shown in Table 3-1.

[0142] Table 3-1:

[0143]

[0144]

[0145] Please refer to Table 3-2, which shows the aspheric parameters of the sixth lens L6 and the seventh lens L7 in this embo...

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Abstract

The invention provides an optical lens system, which comprises in sequence from the object side to the imaging surface: a first lens with negative refractive power and a concave surface facing the object side; a second lens with positive refractive power and convex surfaces on both sides; a third lens with a focal power and a convex surface facing the object side; a fourth lens with a positive refractive power and a convex surface on both sides; a fifth lens with a negative refractive power and a concave surface on both sides, and the fourth lens and the fifth lens The lens forms a cemented lens; a sixth lens with a positive refractive power and a convex surface facing the object side, and a concave surface facing the image side; a seventh lens with a negative refractive power and a concave surface facing the imaging surface; wherein, the diaphragm is arranged between the first lens and the third lens. Among the lenses, the first lens, the fourth lens and the fifth lens are all glass spherical lenses, and the seventh lens is a glass aspheric lens. The lens of the invention not only has thermal stability, but also has extremely high resolving power for objects that emit or reflect monochromatic light of different wavelengths, and can meet the requirements of unmanned driving on the lens.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical lens system. Background technique [0002] In recent years, with the promotion of the concept of unmanned driving and the continuous maturity of unmanned driving technology, unmanned driving may become a trend in the development of automobiles in the future. The key to unmanned driving technology lies in how to obtain sufficiently accurate road information, so unmanned driving has unique requirements for each component of the car. [0003] Among them, the on-board camera lens is a key component of unmanned driving, which acts as the eyes of unmanned driving, and its performance directly affects the safety factor of unmanned driving. Unmanned driving requires the front port diameter of the lens to be as small as possible, with strong light transmission ability, and can adapt to the change of light and shade in the external environment. The thermal stability of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0005G02B13/0045G02B13/006G02B13/18G02B9/64G02B9/60G02B9/62H04N23/57
Inventor 魏文哲鲍宇旻陈伟建刘绪明曾吉勇王克民
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD
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