CN103645555B - Coaxial type super remote distance fold-back low-light range finding night vision macro lens - Google Patents
Coaxial type super remote distance fold-back low-light range finding night vision macro lens Download PDFInfo
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- CN103645555B CN103645555B CN201310725041.2A CN201310725041A CN103645555B CN 103645555 B CN103645555 B CN 103645555B CN 201310725041 A CN201310725041 A CN 201310725041A CN 103645555 B CN103645555 B CN 103645555B
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Abstract
The present invention's open coaxial type super remote distance fold-back low-light range finding night vision macro lens, relates to imaging device field.This macro lens comprises by convex flat shape first lens set gradually with optical axis from image end to imaging end, has one side negative refractive power and center one side reflection potential and in cancavo-convex second lens with have one side reflection potential and the 3rd lens in hollow concave surface, also comprises the convex-concave balsaming lens, coaxial and be positioned over the Laser emission camera lens of image end and coaxial and be positioned over the laser pick-off mirror of imaging end with the 3rd lens with the first lens being placed in the 3rd lens hollow centre place.Macro lens of the present invention is that light path provides refraction repeatedly and reflection, is effectively folded light path, do not increase lens system length and adopt a small amount of mirror group prerequisite under, effectively reduce coke ratio value, improve image quality; Range finding Laser emission camera lens and laser pick-off mirror are provided simultaneously, while observation, provide distance measurement function, accomplish range finding directive property and observe coaxial, collect night vision and distance measurement function in a machine, and cost lower be convenient for carrying.
Description
Technical field
The present invention relates to imaging device field, particularly relate to coaxial type super remote distance fold-back low-light range finding night vision macro lens.
Background technology
Existing night vision technology comprises infrared night vision and lll night vision two aspect.Infrared night vision technology is divided into active infrared night-viewing technology and passive infrared night vision technology, and active infrared night-viewing technology is that correspondence is equipped for active infrared night vision sight by initiatively irradiating and utilizing the infrared light of target reflective infrared line source to implement the night vision technology observed; Passive infrared night vision technology realizes the infrared technique of observing by means of the infrared radiation of target its own transmission.It finds target according to the temperature difference between object and background or target each several part or heat radiation difference, and it is equipped for thermal imaging system.Thermal imaging system has the particular advantages being different from other night vision devices, as worked under the weather condition of mist, rain or snow, has operating distance far away, can identify the Anti-Jamming of camouflage, but its cost is very high.
As needed to use distance measurement function while use night vision device, then need to use stadimeter; When using this two instruments, cost is high and bring inconvenience to use simultaneously.
Summary of the invention
The present invention is directed to the deficiency of Low-light Level Night Vision Technology in prior art and the coaxial type super remote distance fold-back low-light range finding night vision macro lens that proposes, this lll night vision macro lens effectively reduces coke ratio value, improve image quality, range finding Laser emission camera lens and laser pick-off mirror are provided simultaneously, distance measurement function is provided while observation, accomplish range finding directive property and observe coaxial, collect night vision and distance measurement function in a machine, and cost lower be convenient for carrying.
Technical scheme of the present invention is as follows:
Coaxial type super remote distance fold-back low-light range finding night vision macro lens comprises by convex flat shape first lens set gradually with optical axis from image end to imaging end, has one side negative refractive power and center one side reflection potential and in cancavo-convex second lens with have one side reflection potential and the 3rd lens in hollow concave surface, also comprises the convex-concave balsaming lens, coaxial and be positioned over the Laser emission camera lens of image end and coaxial and be positioned over the laser pick-off mirror of imaging end with the 3rd lens with the first lens being placed in the 3rd lens hollow centre place; The exit facet of described first lens and the concave surface of the second lens are oppositely arranged, and the convex surface of described second lens and the concave surface of the 3rd lens are oppositely arranged, and the convex surface of described convex-concave balsaming lens and the convex surface of the second lens are oppositely arranged, and described macro lens meets the following conditions:
D:F=1.0:1.05; Resolving power <0.35 milliradian; D is system entrance pupil bore, and F is the back focal length of whole optical system.
Light path folds by above-mentioned second lens and the 3rd lens, folds successively through the reflection of the 3rd concave lens surface and the reflection of the second convex lens surface to light path.
The beneficial effect of the invention: coaxial type super remote distance fold-back low-light range finding night vision macro lens is that light path provides refraction repeatedly and reflection, effectively be folded light path, under the prerequisite not increasing lens system length and a small amount of mirror group of employing, effectively reduce coke ratio value, improve image quality; Range finding Laser emission camera lens and laser pick-off mirror are provided simultaneously, while observation, provide distance measurement function, accomplish range finding directive property and observe coaxial, collect night vision and distance measurement function in a machine, and cost lower be convenient for carrying.
Accompanying drawing explanation
Fig. 1 is coaxial type super remote distance fold-back low-light of the present invention range finding night vision macro lens structural representation.
Embodiment
In order to better the present invention is described, be now further described by reference to the accompanying drawings.
As shown in Figure 1, coaxial type super remote distance fold-back low-light range finding night vision macro lens comprises by convex flat shape first lens 1 set gradually with optical axis from image end to imaging end, has one side negative refractive power and center one side reflection potential and in cancavo-convex second lens 2 with have one side reflection potential and the 3rd lens 3 in hollow concave surface, also comprises the convex-concave balsaming lens 4, coaxial and be positioned over the Laser emission camera lens 5 of image end and coaxial and be positioned over the laser pick-off mirror 6 of imaging end with the 3rd lens 3 with the first lens 1 being placed in the 3rd lens 3 hollow centre place; The exit facet of described first lens 1 and the concave surface of the second lens 2 are oppositely arranged, and the convex surface of described second lens 2 and the concave surface of the 3rd lens 3 are oppositely arranged, and the convex surface of described convex-concave balsaming lens 4 and the convex surface of the second lens 2 are oppositely arranged.Light path folds by the second lens 2 and the 3rd lens 3, folds successively through the reflection of the 3rd lens 3 concave surface and the reflection of the second lens 2 convex surface to light path.Macro lens meets the following conditions: D:F=1.0:1.05; Resolving power <0.35 milliradian; D is system entrance pupil bore, and F is the back focal length of whole optical system.
The workflow of coaxial type super remote distance fold-back low-light of the present invention range finding night vision macro lens will be described below:
Send laser from Laser emission camera lens 5, when light is incident from the convex surface of the first lens 1, then from its concave surface outgoing, complete first time refraction; The concave surface of light the second lens 2 is again incident, then from its convex surface outgoing, completes second time refraction; Then from the 3rd lens 3 concave reflection, reflex to the convex surface of the second lens 2, then from reflexing to convex-concave balsaming lens 4 through the second lens 2, complete reflection.Laser pick-off mirror 6 receives and sends again through the laser of the first lens 1, second lens 2, the 3rd lens 3 and convex-concave balsaming lens 4 from generating laser Jing5Chu, thus obtains ranging data.Coaxial type super remote distance fold-back low-light range finding night vision macro lens is that light path provides refraction repeatedly and reflection, is effectively folded light path, do not increase lens system length and adopt a small amount of mirror group prerequisite under, effectively reduce coke ratio value, improve image quality; Range finding Laser emission camera lens 5 and laser pick-off mirror 6 are provided simultaneously, while observation, provide distance measurement function, accomplish range finding directive property and observe coaxial, collect night vision and distance measurement function in a machine, and cost lower be convenient for carrying.
Claims (2)
1. coaxial type super remote distance fold-back low-light range finding night vision macro lens, it is characterized in that: comprise by convex flat shape first lens set gradually with optical axis from image end to imaging end, there is one side negative refractive power and center one side reflection potential and in cancavo-convex second lens with there is one side reflection potential and the 3rd lens in hollow concave surface, also comprise the convex-concave balsaming lens, coaxial and be positioned over the Laser emission camera lens of image end and coaxial and be positioned over the laser pick-off mirror of imaging end with the 3rd lens with the first lens being placed in the 3rd lens hollow centre place; The exit facet of described first lens and the concave surface of the second lens are oppositely arranged, and the convex surface of described second lens and the concave surface of the 3rd lens are oppositely arranged, and the convex surface of described convex-concave balsaming lens and the convex surface of the second lens are oppositely arranged, and described macro lens meets the following conditions:
D:F＝1.0：1.05；
Resolving power <0.35 milliradian;
D is system entrance pupil bore, and F is the back focal length of whole optical system.
2. coaxial type super remote distance fold-back low-light range finding night vision macro lens according to claim 1, it is characterized in that: light path folds by described second lens and the 3rd lens, through the reflection of the 3rd concave lens surface and the reflection of the second convex lens surface, light path is folded successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725041.2A CN103645555B (en) | 2013-12-25 | 2013-12-25 | Coaxial type super remote distance fold-back low-light range finding night vision macro lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725041.2A CN103645555B (en) | 2013-12-25 | 2013-12-25 | Coaxial type super remote distance fold-back low-light range finding night vision macro lens |
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| CN103645555A CN103645555A (en) | 2014-03-19 |
| CN103645555B true CN103645555B (en) | 2016-04-13 |
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| CN109239889B (en) * | 2018-09-28 | 2021-01-01 | 高新兴科技集团股份有限公司 | Camera lens, imaging method and camera |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604696Y (en) * | 2003-02-18 | 2004-02-25 | 矽峰光电科技股份有限公司 | Varifocus lens assembly |
| CN2746409Y (en) * | 2004-09-24 | 2005-12-14 | 矽峰光电科技股份有限公司 | Imaging lens assembly |
| CN2784959Y (en) * | 2005-02-02 | 2006-05-31 | 河南中光学集团有限公司 | Glimmer night vision aiming catadioptric objective |
| CN103293681A (en) * | 2013-05-06 | 2013-09-11 | 湖北久之洋红外***股份有限公司 | Two-channel optical device with ultra large diameter and ultra long focal distance |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604696Y (en) * | 2003-02-18 | 2004-02-25 | 矽峰光电科技股份有限公司 | Varifocus lens assembly |
| CN2746409Y (en) * | 2004-09-24 | 2005-12-14 | 矽峰光电科技股份有限公司 | Imaging lens assembly |
| CN2784959Y (en) * | 2005-02-02 | 2006-05-31 | 河南中光学集团有限公司 | Glimmer night vision aiming catadioptric objective |
| CN103293681A (en) * | 2013-05-06 | 2013-09-11 | 湖北久之洋红外***股份有限公司 | Two-channel optical device with ultra large diameter and ultra long focal distance |
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| CN103645555A (en) | 2014-03-19 |
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