A panoramic infrared imager based on an integrated processed metal double reflector

Abstract

The present invention discloses a panoramic infrared imager based on an integrated metal double reflector. The rear optical imaging component is fixedly mounted on the lower end surface of the integrated metal double reflector, and the integrated metal double reflector is fixedly mounted on a base; the hyperbolic optical reflector surface of the integrated metal double reflector is formed by integrated processing on a diamond lathe. The present invention has a reasonable and compact structure, high reliability, easy manufacturing, and simple installation. The use of an integrated metal double reflector makes the panoramic infrared imager simple in structure, eliminates the complicated and cumbersome double reflector structure assembly and optical calibration process, and has a wide temperature adaptability range.

Description

Technical Field

[0001] The invention patent relates to an infrared imager, specifically a panoramic infrared imager based on an integrated processed metal double reflector. Background Art

[0002] Panoramic infrared imaging refers to the infrared imaging technology that uses a special infrared imager to obtain a 360° full field of view in the vertical or horizontal direction, or a hemispherical field of view greater than 180°. The panoramic infrared imager provides infrared imaging information about the object and the environment in all directions and in the vertical direction, which saves time for subsequent image analysis and image processing.

[0003] Panoramic infrared imagers generally use a dual-mirror design to achieve large field of view imaging. However, the panoramic infrared imager reflectors currently developed generally use two separately processed optical reflectors for optical calibration and installation. They are expensive, complicated in design, difficult to install and calibrate, and the image quality is greatly affected by the installation stress, and the temperature adaptability range is small. With the continuous development of diamond turning technology for metal mirror processing and the advancement of optical design technology, integrated mirror processing of metal dual reflectors can be achieved. At the same time, based on the market-oriented size and quality, the reasonable and compact design of panoramic infrared imagers is also a major difficulty. Summary of the invention

[0004] The purpose of the present invention is to provide a panoramic infrared imager based on an integrated metal double reflector with a compact structure and low cost, which has simple processing, low structural complexity and high concentricity, and is more suitable for mature market use and scientific research use, so as to meet the needs of 360° full-field-of-view high-quality infrared imaging.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A panoramic infrared imager based on an integrated processed metal double reflector, comprising an integrated processed metal double reflector 1, a base 2, and a rear optical imaging component 3; the characteristics are:

[0007] The one-piece processed metal double reflector 1 is made of aluminum alloy, and the upper and lower parts are both disc structures. The lower part is the lower reflector base 1-1, and the upper part is the upper reflector base 1-2. The lower reflector base 1-1 and the upper reflector base 1-2 are connected and supported by three supporting ribs in the middle; the lower reflector base 1-1 has six mounting bosses 1-3 on its circumference, and the six mounting bosses 1-3 have mounting through holes in their centers, and the circumferences of the six mounting bosses 1-3 are all processed with flexible mounting grooves 1-4 to reduce processing and installation stress; the upper surface of the lower reflector base 1-1 is processed with a lower optical boss, and the centers of the lower reflector base 1-1 and the lower optical boss are processed through holes 1-5, and the lower surface of the upper reflector base 1-2 is processed with an upper optical convex The center of the upper reflector base 1-2 and the upper optical boss is a processing through hole 1-6; during the diamond lathe processing, the tool is fed and detected through the processing through hole 1-6 and the gap between the three supporting ribs in the middle of the lower reflector base 1-1 and the upper reflector base 1-2, and a curved optical reflector surface 1-7 is processed on the upper surface of the lower optical boss; during the diamond lathe processing, the tool is fed and detected through the processing through hole 1-5 and the gap between the three supporting ribs in the middle of the lower reflector base 1-1 and the upper reflector base 1-2, and a curved optical reflector surface 1-8 is processed on the lower surface of the upper optical boss. The processing accuracy of the diamond lathe ensures the imaging relative position accuracy of the curved optical reflector surface 1-7 and the curved optical reflector surface 1-8.

[0008] The rear optical imaging assembly 3 includes a rear optical lens barrel assembly 3-1, a detector mounting member 3-2, and an infrared detector 3-3; its structure is as follows: the upper portion of the rear optical lens barrel assembly 3-1 is a hollow cylindrical structure with an optical lens installed inside, and the lower portion is a disc structure; the upper end face of the detector mounting member 3-2 is fixedly connected to the lower end face of the lower disc of the rear optical lens barrel assembly 3-1 by screws; the infrared detector 3-3 is fixedly connected to the lower end face of the detector mounting member 3-2 by screws.

[0009] The upper end surface of the lower disk of the rear optical lens barrel assembly 3-1 of the rear optical imaging assembly 3 is fixedly mounted on the lower end surface of the lower reflector base 1-1 of the one-piece processed metal double reflector 1 by screws, and the upper cylinder of the rear optical lens barrel assembly 3-1 equipped with an optical lens passes through the processed through hole 1-5 of the one-piece processed metal double reflector 1; the lower end surface of the lower reflector base 1-1 of the one-piece processed metal double reflector 1 is fixedly mounted on the upper end surface of the base 2 by screws, and the lower part of the rear optical imaging assembly 3 is in the center hole of the base 2; the curved optical reflector surface 1-7, the curved optical reflector surface 1-8 and the rear optical lens barrel assembly 3-1 of the one-piece processed metal double reflector 1 are installed to form a panoramic infrared imaging optical path, and panoramic infrared imaging is performed through the infrared detector 3-3.

[0010] The present invention has the following advantages: the present invention has a reasonable and compact structure, high reliability, easy manufacturing, and simple installation. The use of an integrally processed metal double reflector makes the panoramic infrared imager simple in structure, eliminates the complicated and tedious double reflector structure assembly and optical alignment process, and has a wide temperature adaptability range. At the same time, the flexible installation groove designed for the integrally processed metal double reflector reduces the influence of the reflector processing and installation stress on imaging, and the imaging quality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0012] Figure 2 It is a front view of an embodiment of the present invention, in which the base 2 is hidden for ease of understanding.

[0013] Figure 3 This is a light path diagram of an embodiment of the present invention, in which the base 2 is hidden for ease of understanding.

[0014] Figure 4 It is a schematic structural diagram of an integrated processed metal double reflector 1 according to an embodiment of the present invention.

[0015] Figure 5 1 is a cross-sectional view of an integrally processed metal double reflector 1 according to an embodiment of the present invention.

[0016] Figure 6 It is a schematic diagram of the overall structure of the rear optical component 3 according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] A preferred embodiment of the present invention is given below in conjunction with the accompanying drawings, mainly to further explain the features of the present invention in detail, but not to limit the scope of the present invention:

[0018] See also Figure 1 , Figure 2 and Figure 3 The panoramic infrared imager based on the integrated metal double reflector comprises an integrated metal double reflector 1, a base 2, and a rear optical imaging component 3; the characteristics are:

[0019] See also Figure 4 and Figure 5The material of the one-piece processed metal double reflector 1 is grade 7075 aluminum alloy, and the upper and lower parts are both disc structures. The lower part is the lower reflector base 1-1, and the upper part is the upper reflector base 1-2. The lower reflector base 1-1 and the upper reflector base 1-2 are connected and supported by three supporting ribs in the middle; the circumference of the lower reflector base 1-1 has six mounting bosses 1-3, and the centers of the six mounting bosses 1-3 each have a mounting through hole, and the circumferences of the six mounting bosses 1-3 are all processed with flexible mounting grooves 1-4 to reduce processing and installation stress; the upper surface of the lower reflector base 1-1 is processed with a lower optical boss, and the centers of the lower reflector base 1-1 and the lower optical boss are processed through holes 1-5, and the lower surface of the upper reflector base 1-2 is processed with an upper The upper optical boss, the upper reflector base 1-2 and the center of the upper optical boss are processed through holes 1-6; during the diamond lathe processing, the convex optical reflector surface 1-7 is processed on the upper surface of the lower optical boss by machining the through holes 1-6 and the gap between the three supporting ribs in the middle of the lower reflector base 1-1 and the upper reflector base 1-2; during the diamond lathe processing, the concave optical reflector surface 1-8 is processed on the lower surface of the upper optical boss by machining the through holes 1-5 and the gap between the three supporting ribs in the middle of the lower reflector base 1-1 and the upper reflector base 1-2. The processing accuracy of the diamond lathe ensures the imaging relative position accuracy of the convex optical reflector surface 1-7 and the concave optical reflector surface 1-8.

[0020] See also Figure 6 The rear optical imaging assembly 3 includes a rear optical lens barrel assembly 3-1, a detector mounting member 3-2, and an infrared detector 3-3; its structure is as follows: the upper portion of the rear optical lens barrel assembly 3-1 is a hollow cylindrical structure with an optical lens installed inside, and the lower portion is a disc structure; the upper end surface of the detector mounting member 3-2 is fixedly connected to the lower end surface of the lower disc of the rear optical lens barrel assembly 3-1 by screws; the infrared detector 3-3 adopts LA7113 of Yantai Airui Optoelectronics Technology Co., Ltd., and the infrared detector 3-3 is fixedly connected to the lower end surface of the detector mounting member 3-2 by screws.

[0021] The upper end surface of the lower disk of the rear optical lens barrel assembly 3-1 of the rear optical imaging assembly 3 is fixedly mounted on the lower end surface of the lower reflector base plate 1-1 of the integrally processed metal double reflector 1 by screws, and the upper cylinder of the rear optical lens barrel assembly 3-1 equipped with an optical lens passes through the processed through hole 1-5 of the integrally processed metal double reflector 1; the lower end surface of the lower reflector base plate 1-1 of the integrally processed metal double reflector 1 is fixedly mounted on the upper end surface of the base 2 by screws, and the lower part of the rear optical imaging assembly 3 is in the center hole of the base 2; the convex optical reflector surface 1-7, the concave optical reflector surface 1-8 of the integrally processed metal double reflector 1 and the rear optical lens barrel assembly 3-1 are installed to form the following: Figure 3The panoramic infrared imaging optical path is shown in , and panoramic infrared imaging is performed through the infrared detector 3-3.

Claims

1. A panoramic infrared imager based on an integrated metal double reflector, comprising an integrated metal double reflector (1), a base (2), and a rear optical imaging component (3); characterized in that: The material of the integrated processed metal double reflector (1) is aluminum alloy, and the upper and lower parts are both disc structures, the lower part is a lower reflector base (1-1), and the upper part is an upper reflector base (1-2), and the lower reflector base (1-1) and the upper reflector base (1-2) are connected and supported by three supporting ribs in the middle; the lower reflector base (1-1) has six mounting bosses (1-3) on its circumference, and the six mounting bosses (1-3) have mounting through holes at their centers, and the six mounting bosses (1-3) have flexible mounting grooves (1-4) processed on their circumferences to reduce processing and installation stress; the upper surface of the lower reflector base (1-1) is processed with a lower optical boss, and the centers of the lower reflector base (1-1) and the lower optical boss are first processed through holes (1-5); the lower surface of the upper reflector base (1-2) is processed with an upper optical boss, and the upper The center of the reflector base (1-2) and the upper optical boss is a second processing through hole (1-6); during the diamond lathe processing, the first curved optical reflector surface (1-7) is processed on the upper surface of the lower optical boss through the second processing through hole (1-6) and the gap between the three supporting ribs in the middle of the lower reflector base (1-1) and the upper reflector base (1-2); during the diamond lathe processing, the second curved optical reflector surface (1-8) is processed on the lower surface of the upper optical boss through the first processing through hole (1-5) and the gap between the three supporting ribs in the middle of the lower reflector base (1-1) and the upper reflector base (1-2); the processing accuracy of the diamond lathe ensures the imaging relative position accuracy of the first curved optical reflector surface (1-7) and the second curved optical reflector surface (1-8); The rear optical imaging assembly (3) comprises a rear optical lens barrel assembly (3-1), a detector mounting member (3-2), and an infrared detector (3-3); the structure is as follows: the upper portion of the rear optical lens barrel assembly (3-1) is a hollow cylindrical structure with an optical lens mounted inside, and the lower portion is a disc structure; the upper end surface of the detector mounting member (3-2) is fixedly connected to the lower end surface of the disc at the lower portion of the rear optical lens barrel assembly (3-1) by means of screws; and the infrared detector (3-3) is fixedly connected to the lower end surface of the detector mounting member (3-2) by means of screws; The upper end surface of the lower disk of the rear optical lens barrel assembly (3-1) of the rear optical imaging assembly (3) is fixedly mounted on the lower end surface of the lower reflector base plate (1-1) of the integrated machined metal double reflector (1) by screws, and the upper cylinder of the rear optical lens barrel assembly (3-1) equipped with an optical lens passes through the first machined through hole (1-5) of the integrated machined metal double reflector (1); the lower end surface of the lower reflector base plate (1-1) of the integrated machined metal double reflector (1) is fixedly mounted on the upper end surface of the base (2) by screws, and the lower part of the rear optical imaging assembly (3) is in the center hole of the base (2); the first curved optical reflector surface (1-7), the second curved optical reflector surface (1-8) of the integrated machined metal double reflector (1) and the rear optical lens barrel assembly (3-1) are installed to form a panoramic infrared imaging optical path, and panoramic infrared imaging is performed through the infrared detector (3-3).

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