CN111239959A - Variable-focus imaging system - Google Patents
Variable-focus imaging system Download PDFInfo
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- CN111239959A CN111239959A CN201811440691.1A CN201811440691A CN111239959A CN 111239959 A CN111239959 A CN 111239959A CN 201811440691 A CN201811440691 A CN 201811440691A CN 111239959 A CN111239959 A CN 111239959A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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Abstract
The invention discloses a variable focus imaging system, comprising: a visible light imaging lens group for collecting visible light; a double-sided total reflection mirror a-side for receiving visible light and reflecting the visible light; the visible light imaging machine core receives the visible light reflected by the surface a of the double-sided total reflection mirror and performs imaging; the infrared thermal imaging lens group is positioned on the same horizontal plane with the visible light imaging lens group and is used for collecting infrared light; a double-sided total reflection mirror b surface for receiving the infrared light and reflecting the infrared light; the infrared thermal imaging machine core receives the infrared light reflected by the b surface of the double-sided total reflection mirror and performs imaging; the double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group and the infrared thermal imaging lens group are respectively adjusted. The movable double-sided total reflection mirror and the visible light and infrared light are simultaneously collected, so that the technical problems of small observation range and single applicable environment of an imaging system are solved, the observation range is enlarged, and the technical effects of accurate observation in both day and night are achieved.
Description
Technical Field
The invention relates to the technical field of imaging observation, in particular to a variable-focus imaging system.
Background
Light is ubiquitous around people, an optical imaging technology is also inseparable from our lives, and optical imaging plays an important role in the fields of image acquisition, space observation and the like through various optical instruments such as cameras, video cameras, telescopes and the like.
However, in the process of implementing the technical solution in the embodiment of the present application, the inventor of the present application finds that the above prior art has at least the following technical problems:
the existing imaging system has the advantages of small observation range, low precision and single applicable environment.
Disclosure of Invention
The embodiment of the invention provides the variable-focus imaging system, solves the technical problems of small observation range, low precision and single applicable environment of the conventional imaging system, and achieves the technical effects of enlarging the range of the imaging observation distance, improving the accuracy of observation imaging and accurately observing in both day and night.
In order to solve the above problem, an embodiment of the present invention provides a variable focus imaging system, including: the visible light imaging mirror group collects visible light; the double-sided fully-reflective mirror a-side receives the visible light and reflects the visible light; the visible light imaging machine core receives the visible light reflected by the a surface of the double-sided total reflection mirror and performs imaging; the infrared thermal imaging lens group and the visible light imaging lens group are positioned on the same horizontal plane, and the infrared thermal imaging lens group collects infrared light; the double-sided total reflection mirror b surface receives the infrared light and reflects the infrared light; the infrared thermal imaging machine core receives the infrared light reflected by the b surface of the double-sided total reflection mirror and performs imaging; the double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group and the infrared thermal imaging lens group are respectively adjusted.
Preferably, the system further comprises: and the motor is connected with the double-sided total reflection mirror and controls the double-sided total reflection mirror to move.
Preferably, the visible light imaging mirror group comprises: the visible light imaging fixed focus lens receives external visible light; the visible light total reflection mirror reflects the visible light incident from the visible light imaging prime lens to the a surface of the double-sided total reflection mirror.
Preferably, the infrared thermal imaging lens group comprises: the infrared thermal imaging prime lens receives external infrared light and enables the infrared light to be incident to the b surface of the double-sided total reflection mirror.
Preferably, the imaging observation distance of the system is 600mm-2500 m.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
1. the embodiment of the invention provides a variable-focus imaging system, which comprises: the visible light imaging mirror group collects visible light; the double-sided fully-reflective mirror a-side receives the visible light and reflects the visible light; the visible light imaging machine core receives the visible light reflected by the a surface of the double-sided total reflection mirror and performs imaging; the infrared thermal imaging lens group and the visible light imaging lens group are positioned on the same horizontal plane, and the infrared thermal imaging lens group collects infrared light; the double-sided total reflection mirror b surface receives the infrared light and reflects the infrared light; the infrared thermal imaging machine core receives the infrared light reflected by the b surface of the double-sided total reflection mirror and performs imaging; the double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group and the infrared thermal imaging lens group are respectively adjusted. The double-sided total reflection mirror that passes through portable regulation on the one hand focuses on double light path simultaneously, adjust the distance between the interior lens of group, thereby change the focus of group, imaging system's observation scope and precision have been increased, on the other hand utilizes visible light and infrared double light path imaging, visible light has been realized, infrared light gathers simultaneously, observation ability of observation system under the weak light ray has been improved, it is little to have solved imaging system observation scope, the single technical problem of applicable environment, increased observation scope has been reached, and the technical effect of the equal accurate observation of daytime and night.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a variable focus imaging system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a fully reflective mirror at a lowest position of a variable focus imaging system according to an embodiment of the present invention;
FIG. 3 is a schematic view of a fully reflective mirror at the highest position of a zoom imaging system according to an embodiment of the present invention;
description of reference numerals: a visible light imaging lens group 1; a surface 2 of the double-sided total reflection mirror; a visible light imaging movement 3; an infrared thermal imaging lens group 4; a double-sided total reflection mirror b-side 5; an infrared thermal imaging core 6; a visible light imaging prime lens 7; and a visible light total reflection mirror 8.
Detailed Description
The embodiment of the invention provides a variable-focus imaging system, which has the advantages that on one hand, a double light path is simultaneously focused through a movably adjusted double-sided total-reflection mirror, and the distance between lenses in a lens group is adjusted, so that the focal length of the lens group is changed, and the observation range and the accuracy of the imaging system are increased, on the other hand, visible light and infrared light are simultaneously acquired by utilizing visible light and infrared double light path imaging, the observation capability of the observation system under weak light is improved, the technical problems of small observation range and single applicable environment of the imaging system are solved, the observation range is increased, and the technical effect of accurate observation in day and night is achieved.
The technical scheme in the embodiment of the invention has the following overall structure: a variable focus imaging system, the system comprising: the visible light imaging mirror group collects visible light; the double-sided fully-reflective mirror a-side receives the visible light and reflects the visible light; the visible light imaging machine core receives the visible light reflected by the a surface of the double-sided total reflection mirror and performs imaging; the infrared thermal imaging lens group and the visible light imaging lens group are positioned on the same horizontal plane, and the infrared thermal imaging lens group collects infrared light; the double-sided total reflection mirror b surface receives the infrared light and reflects the infrared light; the infrared thermal imaging machine core receives the infrared light reflected by the b surface of the double-sided total reflection mirror and performs imaging; the double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group and the infrared thermal imaging lens group are respectively adjusted. The double-sided total reflection mirror that passes through portable regulation on the one hand focuses on double light path simultaneously, adjust the distance between the interior lens of group, thereby change the focus of group, imaging system's observation scope and precision have been increased, on the other hand utilizes visible light and infrared double light path imaging, visible light has been realized, infrared light gathers simultaneously, observation ability of observation system under the weak light ray has been improved, it is little to have solved imaging system observation scope, the single technical problem of applicable environment, increased observation scope has been reached, and the technical effect of the equal accurate observation of daytime and night.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a variable focus imaging system, including:
the visible light imaging lens group 1 is used for collecting visible light; further, the visible light imaging lens group 1 includes: the visible light imaging fixed focus lens 7 is used for receiving external visible light, and the visible light imaging fixed focus lens 7 is used for receiving the external visible light; and the visible light total reflection mirror 8 reflects the visible light incident from the visible light imaging fixed-focus lens 7 to the double-sided total reflection mirror a-surface 2.
Specifically, the method comprises the following steps: visible light is a part of the electromagnetic spectrum which can be perceived by human eyes, and the visible spectrum has no precise range; the wavelength of the electromagnetic wave that can be sensed by the eyes of a person is 400-760 nm, and the visible light imaging lens group 1 can collect the visible light for imaging. The visible light imaging lens group 1 is composed of a visible light imaging fixed focus lens 7 and a visible light total reflection mirror 8, the visible light imaging fixed focus lens 7 is used for collecting and receiving external visible light, the visible light total reflection mirror 8 is used for reflecting light collected by the visible light imaging fixed focus lens 7 to the a surface 2 of the double-sided total reflection mirror, for example, when the visible light imaging fixed focus lens 7 is operated, the focal length of the visible light imaging fixed focus lens 7 is 100mm, the transmittance of the visible light in a wave band of 400-700 nm is high, the lens can enable all transmitted visible light to be incident to the total reflection mirror, and the visible light total reflection mirror 8 reflects the incident visible light to the a surface 2 of the double-sided total reflection mirror. The invention is not limited to the visible light imaging lens group 1 described in the embodiment, and other lenses and reflectors which can achieve the same effect may be combined to form another visible light imaging lens group 1.
The double-sided fully-reflective mirror a-surface 2 receives the visible light and reflects the visible light;
specifically, the method comprises the following steps: the reflecting mirror can be divided into a total reflecting mirror and a half reflecting mirror according to the reflecting degree. Because the reflection law is irrelevant to the frequency of light, the operating band of the total reflection mirror is very wide and can reach the ultraviolet region and the infrared region of a visible light spectrum, and the application range of the total reflection mirror is wider and wider. The total reflection mirror is an optical element which is formed by coating a metal silver (or aluminum) film on the back surface of optical glass through vacuum coating to reflect incident light. The output power of the laser can be improved by times by adopting the full-reflecting mirror with high reflectance, and the full-reflecting mirror is reflected by the first reflecting surface, so that a reflected image is not distorted, and has no double image, and the reflected image has the function of front surface reflection. And by adopting the coated film surface full-reflection mirror, the obtained image has high brightness, accuracy and no deviation, and the image quality is clearer and the color is more vivid. In this embodiment, a double-sided total reflection mirror with a high reflectance is preferred, and after the visible light incident from the visible light imaging fixed focus lens 7 is reflected to the a-surface 2 of the double-sided total reflection mirror by the visible light total reflection mirror 8, the a-surface 2 of the double-sided total reflection mirror receives the visible light reflected by the visible light total reflection mirror 8 and reflects the visible light. For example, after the visible light totally-reflecting mirror 8 horizontally reflects the visible light to the double-sided totally-reflecting mirror a-surface 2, the double-sided totally-reflecting mirror a-surface is arranged at an angle of 45 °, and the double-sided totally-reflecting mirror a-surface 2 reflects the received visible light out in a direction perpendicular to the incident light.
The visible light imaging machine core 3 receives the visible light reflected by the a surface 2 of the double-sided total reflection mirror and performs imaging;
specifically, the method comprises the following steps: the visible light imaging movement 3 can perform operations such as correction, enhancement, spectrum analysis, image segmentation and the like on the received visible light, and finally displays a complete and clear image, the visible light imaging movement 3 is arranged on a visible light path reflected by the double-sided full-reflection mirror a-surface 2, and after the visible light is reflected by the double-sided full-reflection mirror a-surface 2, the visible light imaging movement 3 can receive the reflected visible light, and then process and image the visible light.
The infrared thermal imaging lens group 4 is positioned on the same horizontal plane with the visible light imaging lens group 1, and the infrared thermal imaging lens group 4 collects infrared light; further, the infrared thermal imaging lens group 4 includes: the infrared thermal imaging prime lens receives external infrared light and enables the infrared light to be incident to the b surface 5 of the double-sided total reflection mirror.
Specifically, the method comprises the following steps: due to the existence of black body radiation, any object is radiated with electromagnetic waves according to different temperatures. The portion having a wavelength of 2.0 to 1000 μm is called thermal infrared. The thermal infrared imaging can reflect the temperature field on the surface of an object by imaging the object through the thermal infrared sensitive CCD. Thermal infrared has wide application in military, industry, automobile auxiliary driving and medical fields. The infrared thermal imaging lens group 4 can collect infrared light, the collected infrared light is incident to the b surface 5 of the double-sided total reflection lens, and the infrared thermal imaging lens group 4 can adopt an infrared thermal imaging fixed-focus lens and other lenses capable of realizing infrared light collection. When the visible light is weak at night, the thermal infrared lens group 4 is used for collecting infrared light, and imaging and observation can be carried out. The infrared thermal imaging lens group 4 and the visible light imaging lens group 1 are arranged on the same horizontal plane, so that double acquisition of visible light and infrared light paths can be realized simultaneously, and the double light paths can be focused simultaneously by adjusting the displacement of a full-reflecting mirror by using geometric optics. Not only is convenient, but also improves the adjusting speed and the accuracy.
The double-sided total reflection mirror b surface 5 receives the infrared light and reflects the infrared light;
specifically, the b surface 5 of the double-sided total reflection mirror may be a metal total reflection mirror or other mirrors capable of reflecting infrared light. After the infrared thermal imaging lens group 4 irradiates the collected infrared light to the b-face 5 of the double-face total reflection mirror, the b-face 5 of the double-face total reflection mirror receives the infrared light and reflects the infrared light, for example, the focal length of the infrared thermal imaging lens group 4 is 100mm, the transmittance of the infrared thermal imaging lens group 4 to the medium wave infrared light of 8-14 μm is high, the infrared thermal imaging lens group 4 collects the medium wave infrared light of 8-14 μm and irradiates the infrared thermal imaging lens group to the b-face 5 of the double-face total reflection mirror, correspondingly, the reflectance of the infrared thermal imaging lens group 5 to the medium wave infrared light of 8-14 μm is high, the infrared thermal imaging lens group 5 of the double-face total reflection mirror can reflect the medium wave infrared light of 8-14 μm, and the imaging effect and the observation precision can be improved.
The infrared thermal imaging machine core 6 is used for receiving the infrared light reflected by the b surface 5 of the double-sided total reflection mirror and imaging the infrared light;
specifically, the method comprises the following steps: the infrared thermal imaging core 6 detects infrared heat in a non-contact manner, converts the infrared heat into a thermal image and a temperature value, and displays the thermal image and the temperature value on a display, and can calculate the temperature value, the infrared thermal imaging core 6 is arranged on a path of infrared light reflected by the b surface 5 of the double-sided total reflection mirror, receives the infrared light reflected by the b surface 5 of the double-sided total reflection mirror, for example, the b surface of the double-sided total reflection mirror reflects the infrared light to the infrared thermal imaging core 6 after receiving 8-14 μm medium wave infrared light, and the infrared thermal imaging core 6 processes and images the 8-14 μm medium wave infrared light after receiving the infrared light.
The double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group 1 and the infrared thermal imaging lens group 4 are respectively adjusted. Further, the system further comprises: and the motor is connected with the double-sided total reflection mirror and controls the double-sided total reflection mirror to move. Further, the imaging observation distance of the system is 600mm-2500 m.
Specifically, the method comprises the following steps: the double-sided total reflection mirror is provided with a high-precision linear motor with the step length of 0.004mm, the stroke of the motor is 20mm, the double-sided total reflection mirror can move along the infrared light incidence direction through the motor, and the image distances of the visible light imaging lens group 1 and the infrared thermal imaging lens group 4 are respectively adjusted. Motors of other models can be also equipped according to actual requirements. When the system works, the double-sided total reflection mirror has two critical positions according to the stroke of the motor. As shown in fig. 2, when the double-sided total reflection mirror is located at the lowest position, the visible light receiving paths are a1, b1 and c1, the image distance is a1+ b1+ c1 is 120mm, the infrared light receiving paths are a2 and b2, the image distance is a2+ b2 is 100mm, and when the total reflection mirror is located at the highest position, the visible light receiving paths are a3, b3 and c3, the image distance is a3+ b3+ c3 is 120mm, the infrared light receiving paths are a4 and b4, and the image distance is a4+ b4 is 100 mm. The system moves through the motor, and then drives the double-sided total reflection mirror to adjust the focal length of the double light paths simultaneously, and the observation distance imaging of visible light and infrared light of 600mm-2500m is realized while electronic zooming is realized.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
1. the embodiment of the invention provides a variable-focus imaging system, which comprises: the visible light imaging mirror group collects visible light; the double-sided fully-reflective mirror a-side receives the visible light and reflects the visible light; the visible light imaging machine core receives the visible light reflected by the a surface of the double-sided total reflection mirror and performs imaging; the infrared thermal imaging lens group and the visible light imaging lens group are positioned on the same horizontal plane, and the infrared thermal imaging lens group collects infrared light; the double-sided total reflection mirror b surface receives the infrared light and reflects the infrared light; the infrared thermal imaging machine core receives the infrared light reflected by the b surface of the double-sided total reflection mirror and performs imaging; the double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group and the infrared thermal imaging lens group are respectively adjusted. The double-sided total reflection mirror that passes through portable regulation on the one hand focuses on double light path simultaneously, adjust the distance between the interior lens of group, thereby change the focus of group, imaging system's observation scope and precision have been increased, on the other hand utilizes visible light and infrared double light path imaging, visible light has been realized, infrared light gathers simultaneously, observation ability of observation system under the weak light ray has been improved, it is little to have solved imaging system observation scope, the single technical problem of applicable environment, increased observation scope has been reached, and the technical effect of the equal accurate observation of daytime and night.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (5)
1. A variable focus imaging system, the system comprising:
the visible light imaging mirror group collects visible light;
the double-sided fully-reflective mirror a-side receives the visible light and reflects the visible light;
the visible light imaging machine core receives the visible light reflected by the a surface of the double-sided total reflection mirror and performs imaging;
the infrared thermal imaging lens group and the visible light imaging lens group are positioned on the same horizontal plane, and the infrared thermal imaging lens group collects infrared light;
the double-sided total reflection mirror b surface receives the infrared light and reflects the infrared light;
the infrared thermal imaging machine core receives the infrared light reflected by the b surface of the double-sided total reflection mirror and performs imaging;
the double-sided total reflection mirror can move along the direction of incident infrared light, and the image distances of the visible light imaging lens group and the infrared thermal imaging lens group are respectively adjusted.
2. The system of claim 1, wherein the system further comprises:
and the motor is connected with the double-sided total reflection mirror and controls the double-sided total reflection mirror to move.
3. The system of claim 1, wherein the visible light imaging optics comprise:
the visible light imaging fixed focus lens receives external visible light;
the visible light total reflection mirror reflects the visible light incident from the visible light imaging prime lens to the a surface of the double-sided total reflection mirror.
4. The system of claim 1, wherein the set of infrared thermal imaging mirrors comprises:
the infrared thermal imaging prime lens receives external infrared light and enables the infrared light to be incident to the b surface of the double-sided total reflection mirror.
5. The system of claim 1, wherein the system has an imaging range of view of 600mm to 2500 m.
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| CN201811440691.1A CN111239959B (en) | 2018-11-29 | 2018-11-29 | Variable-focus imaging system |
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| CN201811440691.1A CN111239959B (en) | 2018-11-29 | 2018-11-29 | Variable-focus imaging system |
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| CN111239959B CN111239959B (en) | 2022-04-22 |
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| CN1573505A (en) * | 2003-05-21 | 2005-02-02 | 富士写真光机株式会社 | Visible and infrared light photographing lens system |
| CN2757157Y (en) * | 2004-11-20 | 2006-02-08 | 鸿富锦精密工业（深圳）有限公司 | Two section type focusing structure |
| KR20120078973A (en) * | 2011-01-03 | 2012-07-11 | 엘지이노텍 주식회사 | Imaging apparatus |
| CN103278927A (en) * | 2013-06-21 | 2013-09-04 | 西安工业大学 | Two-waveband hole-diameter-shared light-path-shared zoom-shared imaging optical system |
| CN105659142A (en) * | 2013-07-29 | 2016-06-08 | 生物辐射实验室股份有限公司 | Mechanical zoom imaging apparatus |
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2018
- 2018-11-29 CN CN201811440691.1A patent/CN111239959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573505A (en) * | 2003-05-21 | 2005-02-02 | 富士写真光机株式会社 | Visible and infrared light photographing lens system |
| CN2757157Y (en) * | 2004-11-20 | 2006-02-08 | 鸿富锦精密工业（深圳）有限公司 | Two section type focusing structure |
| KR20120078973A (en) * | 2011-01-03 | 2012-07-11 | 엘지이노텍 주식회사 | Imaging apparatus |
| CN103278927A (en) * | 2013-06-21 | 2013-09-04 | 西安工业大学 | Two-waveband hole-diameter-shared light-path-shared zoom-shared imaging optical system |
| CN105659142A (en) * | 2013-07-29 | 2016-06-08 | 生物辐射实验室股份有限公司 | Mechanical zoom imaging apparatus |
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| CN111239959B (en) | 2022-04-22 |
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