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Day-night type high-multiplying-power high-definition continuous zooming optical lens

An optical lens and high-magnification technology, applied in the field of wide-spectrum imaging, can solve the problems of low focal length magnification and limitations of the lens, and achieve the effects of ensuring performance, saving costs, and simple zooming methods.

Active Publication Date: 2017-03-22
HEBEI HANGUANG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Other similar high-definition lens patents, such as CN202443165U, CN103424852A, CN203376516U, CN202330964U, etc., involve a low focal length magnification, and are limited to the visible light band

Method used

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  • Day-night type high-multiplying-power high-definition continuous zooming optical lens
  • Day-night type high-multiplying-power high-definition continuous zooming optical lens
  • Day-night type high-multiplying-power high-definition continuous zooming optical lens

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Experimental program
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Effect test

Embodiment 1

[0024] as attached figure 1 As shown, the present invention includes a front fixed group G1 with positive refractive power, a zoom group G2 with negative refractive power, a compensation group G3 with negative refractive power, and a diaphragm STO in order from the object side to the image side. , the rear fixation group G4 with positive optical power, the neutral density filter ND, the fog filter PF and the camera target surface Simage. The zoom group G2 and the compensation group G3 move relative to each other according to a certain rule during the zooming process, realizing high-magnification, all-weather unbiased focus and high-definition imaging during the zooming process of the lens. Switching between the neutral density filter ND and the near-infrared filter PF enables the lens to be used in day and night environments.

[0025] The above-mentioned zoom lens satisfies the following relationship:

[0026] 0.32≤f 1 / f t ≤0.38

[0027] 0.37≤f 2 / f 3 ≤0.41

[0028] A...

Embodiment

[0036] Embodiment: the specific data of this embodiment are as shown in the following table:

[0037] The design parameters of the day and night high-magnification high-definition continuous zoom optical lens according to claim 1 are as follows:

[0038]

[0039]

[0040]

[0041] In Table 1, the radius of curvature refers to the radius of curvature of each surface, and the distance refers to the distance between two adjacent surfaces, for example, the distance between the surface S1, that is, the distance between the surface S1 and the surface S2.

[0042]The day and night high-magnification high-definition continuous zoom optical lens provided by the present invention effectively solves the problems of existing high-definition lenses that cannot be used day and night, low magnification, small imaging target surface, and high cost; the high-definition continuous zoom optical lens of the present invention can be used day and night , has the characteristics of large re...

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Abstract

The invention discloses a day-night type high-multiplying-power high-definition continuous zooming optical lens. The optical lens comprises a front fixation group G1 with the positive focal power, a zooming group G2 with the negative focal power, a compensation group G3 with the negative focal power, a diaphragm STO, a rear fixation group G4 with the positive focal power, a filter lens, and a camera target surface Simage, wherein the units are arranged coaxially and successively from an object side to an image side. The focal lengths of the front fixation group G1, the zooming group G2, and the compensation group G3 meet the following relational expressions: f1 / ft is larger than or equal to 0.32 and is less than or equal to 0.36; f2 / f3 is larger than or equal to 0.37 and is less than or equal to 0.41, wherein the f1 expresses the focal length value of the front fixation group G1, the f2 expresses the focal length value of the zooming group G2, the f3 expresses the focal length value of the compensation group G3, the ft expresses the longest focal length value of the optical lens. The optical lens has the high-multiplying-power continuous zooming function and is capable of realizing all-weather offset-focusing-free high-definition imaging.

Description

technical field [0001] The invention belongs to the field of wide-spectrum imaging and provides a day and night high-magnification high-definition continuous zoom optical lens. Background technique [0002] As an important component of various photoelectric systems, continuous zoom lenses are widely used in land and sea defense monitoring and other fields. With the continuous innovation of millions of high-definition cameras, the demand for high-definition continuous zoom lenses is becoming increasingly strong. This day and night high-magnification high-definition continuous zoom optical lens has a large relative aperture and uses low dispersion glass to minimize chromatic aberration. , Even at night, evening, sunset, and dusk, it can provide all-weather unbiased high-definition images. In addition, as a photoelectric monitoring lens, it is also equipped with a neutral density filter that suppresses the amount of light and can monitor with optimal brightness, and a near-inf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/17
CPCG02B15/17
Inventor 赵翠玲
Owner HEBEI HANGUANG HEAVY IND
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