KR20110037450A - The dual field of view lens module for the thermal imaging camera - Google Patents

The dual field of view lens module for the thermal imaging camera Download PDF

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KR20110037450A
KR20110037450A KR1020090094902A KR20090094902A KR20110037450A KR 20110037450 A KR20110037450 A KR 20110037450A KR 1020090094902 A KR1020090094902 A KR 1020090094902A KR 20090094902 A KR20090094902 A KR 20090094902A KR 20110037450 A KR20110037450 A KR 20110037450A
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lens unit
lens
image
thermal imaging
magnification
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KR1020090094902A
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Korean (ko)
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KR101039105B1 (en
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김현규
옥창민
박전구
정해두
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(주)토핀스
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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
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G02B7/105—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens with movable lens means specially adapted for focusing at close distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/22—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with movable lens means specially adapted for focusing at close distances
    • 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
    • G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only

Abstract

PURPOSE: A double magnification lens module for a thermal imaging camera is provided to adjust a focus in case of a 100K temperature change. CONSTITUTION: A first lens unit(100) captures an image by receiving light reflected from a subject. A second lens unit(200) is located in the rear side of the first lens unit in an optical axis direction to make an image of the first lens unit from an infrared ray detector. A plurality of fixing bars(400,400') crosses the first and second lens units to position the second lens unit in the optical axis direction of the first lens unit. A third lens unit(300) slides among the fixing bars. The third lens unit is located between the first and second lens units to change the magnification of the image.

Description

열화상카메라용 이중배율 렌즈모듈{THE DUAL FIELD OF VIEW LENS MODULE FOR THE THERMAL IMAGING CAMERA}Dual-magnification lens module for thermal imaging cameras {THE DUAL FIELD OF VIEW LENS MODULE FOR THE THERMAL IMAGING CAMERA}

본 발명은 감시용, 산업용, 연구용, 의료용으로 사용되는 열화상카메라용 이중배율 렌즈모듈에 관한 것이다.The present invention relates to a dual magnification lens module for a thermal imaging camera used for surveillance, industrial, research, medical.

열화상카메라는 1970년대 야간전투를 위하여 군사목적으로 사용하기 시작하였으나, 근래에들어 민수용으로 사용하는 사례가 계속해서 증가하는 추세에 있다.Thermal imaging cameras began to be used for military purposes for night combat in the 1970s, but in recent years, the use of civil cameras has been increasing.

민수용으로 사용되는 열화상카메라는 감시용, 산업용, 연구용, 의료용으로 구분할 수 있으며 감시용의 경우에는 피사체에서 발생되는 적외선 흑백영상을 그대로 사용하고 있으나, 산업용, 연구용, 의료용은 피사체에서 발생되는 적외선 복사에너지를 온도차이로 표현하여 슈도칼라(흑백 영상의 각 화소에 각 명암도별로 색을 할당하여 표시하는방법으로 X선 영상, 초음파 영상 등에서필요한 특징을 잘 볼 수 있도록 하는 데 주로 사용한다)로 영상을 얻게되어 피사체에 대한 이차원 온도분포를 볼 수 있다.Thermal imaging cameras used for civil purposes can be classified into surveillance, industrial, research, and medical.In the case of surveillance, infrared black and white images generated by a subject are used as they are.Industrial, research, and medical use, infrared radiation generated by a subject is used. The energy is expressed as a temperature difference, and a color is used as a pseudo color (a method of assigning colors to each pixel of a black and white image for each contrast level, and is used to make it possible to see the necessary features well in an X-ray image or an ultrasound image). You can then get a two-dimensional temperature distribution over the subject.

이러한 온도분포는 냉난방 시스템 제작 및 설치시 에너지 손실을 최소화하는데 사용되거나, 제품검사 또는 열분포 최적화 시스템을 구현하기 위한 연구장비 또 는 의료용 체열진단기나 공황검색대에서 조류독감 및 신종플루에 감염되어 체온이 올라간 사람을 검색하는데 사용되고 있다.These temperature distributions are used to minimize energy loss during the manufacturing and installation of heating and cooling systems, or are infected with bird flu and swine flu in research equipment or medical thermographs or panic screening systems to implement product inspection or heat distribution optimization systems. It is used to search people who have climbed.

열화상카메라는 적외선 검출기를 77K로 냉각하여 중적외선과 원적외선 대역에서 사용되는 냉각형과 적외선 검출기를 냉각하지 않고 원적외선 대역에서만 사용되는 비냉각형이 있다.Thermal imaging cameras have an infrared detector cooled to 77K, which are used in the mid-infrared and far-infrared bands and uncooled in the far-infrared band without cooling the infrared detectors.

냉각형 열화상카메라는 적외선 검출기에 냉각기를 붙여서 사용하기 때문에 부피가 크고 약간의 진동과 소음이 있으나, 검출기의 성능이 좋아서 원거리 관측이나 고화질 구현이 가능한 반면, 비냉각형 열화상카메라는 냉각기가 필요없기 때문에 소형경량화가 가능하므로 좁은 공간에 장착하거나 휴대용으로 사용하기에 적합하여 최근 널리 보급되고 있는 대부분의 열화상카메라가 비냉각형으로 되어 있으나 냉각형 열화상카메라에 비해 관측거리, 고화질 구현이 힘들어 많은 연구가 있어왔다.Cooled IR cameras are bulky and have some vibration and noise due to the use of a cooler attached to the infrared detector.However, the performance of the detector allows for long-range observation or high image quality, whereas uncooled IR cameras do not require a cooler. Because of its small size and light weight, it is suitable to be installed in a narrow space or to be used as a portable device. Most thermal imaging cameras, which are widely used in recent years, are uncooled. Has been.

한국 공개특허공보 제10-2008-0100438호에는 물체측으로부터 차례로 제 1 내지 제 3 렌즈군을 구비하고, 주밍(zooming)시에 상기 제 1 및 제 3 렌즈군이 고정된 상태로, 상기 제 2 렌즈군이 이동되고, 상기 제 1 내지 제 3 렌즈군은 각각 황화 아연에 의해 형성된 적어도 하나의 렌즈를 갖는 것을 특징으로 하는 적외선 줌 렌즈 및 적외선카메라가 공개되어 있다.Korean Patent Laid-Open Publication No. 10-2008-0100438 includes the first to third lens groups sequentially from an object side, and the second and second lens groups are fixed while zooming. An infrared zoom lens and an infrared camera are disclosed, wherein the lens group is moved, and the first to third lens groups each have at least one lens formed of zinc sulfide.

한국 등록실용신안공보 제20-0393933호에는 물체측에 대하여 볼록면을 갖는 메니스커스형의 음의 배율 렌즈인 제1렌즈와, 물체측과 상측에 대하여 볼록면을 갖는 양의 배율렌즈인 제 2 렌즈와, 물체측과 상측에 대하여 볼록면을 갖는Korean Utility Model Publication No. 20-0393933 discloses a first lens which is a meniscus negative magnification lens having a convex surface on the object side, and a positive magnification lens having a convex surface on the object side and an image side. 2 lens and convex surface with respect to object side and image side

양의 배율렌즈인 제 3 렌즈와, 물체측에 대하여 오목면을 갖는 메니스커스형의 음의 배율렌즈인 제4렌즈와, 상기 제 1 렌즈와 상기 제 2 렌즈 사이에 배치되는 고정조리개로 구성된 감시카메라용 렌즈에 있어서, 상기 제 1 렌즈, 제 2 렌즈, 제 3 렌즈 및 제 4 렌즈의 굴절율 및 분산계수를 소정 값으로 구성하는 가시광선 및 근적외선 감시카메라 렌즈가 공개되어 있다.A third lens which is a positive magnification lens, a fourth lens which is a meniscus negative magnification lens having a concave surface with respect to the object side, and a fixed aperture disposed between the first lens and the second lens. In the surveillance camera lens, there are disclosed visible and near-infrared surveillance camera lenses that have refractive indices and dispersion coefficients of the first, second, third, and fourth lenses at predetermined values.

그러나, 상기와 같은 기존의 기술들은 배율변환이 힘들며 렌즈의 특성상 온도변화에 따른 광학계의 초점거리가 많이 변하게 되어 피사체의 화질이 선명하지 못한 문제가 있다.However, the existing technologies as described above are difficult to change the magnification, and the focal length of the optical system is changed by the temperature change due to the characteristics of the lens, so that the image quality of the subject is not clear.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 배율변환과 온도변화에 의한 렌즈의 굴절률 변화 때문에 발생하는 초점이동량의 보정이 가능하여 100K의 온도변화시에도 초점조절이 가능한 열화상카메라용 이중배율 렌즈모듈을 제공하는데 있다.The present invention is to solve such a problem, it is possible to correct the amount of focus shift caused by the change of the refractive index of the lens due to the magnification conversion and temperature change, the dual magnification lens for the thermal imaging camera that can be adjusted in focus even at a temperature change of 100K To provide a module.

상기 목적을 달성하기 위한 본 발명의 열화상카메라용 이중배율 렌즈모듈은 피사체와 대향하여 피사체에서 반사되는 빛을 수광하여 상을 포착하도록 한 제1렌즈부; 광축방향으로 제1렌즈부의 후측에 위치하여, 상을 디지털 영상신호로 변환하여 출력하는 적외선검출기로 제1렌즈부가 수광한 상을 결상하도록 한 제2렌즈부; 상기 제2렌즈부와 제1렌즈부를 가로질러 설치되어 제2렌즈부가 제1렌즈부의 광축방 향에 놓이게 서로를 고정하는 다수개의 고정바들; 상기 고정바들 사이에 슬라이드 방식으로 이동가능하게 설치되어 제1렌즈부와 제2렌즈부 사이에 위치하여, 제1렌즈부와 제2렌즈부 사이를 광축방향으로 이동하며 상의 배율을 변환시키고 비열화를 보상하도록 한 제3렌즈부; 및 상기 제1렌즈부와 제2렌즈부 및 제3렌즈부를 가로질러 관통하게 설치되어 회전하는 나사봉과, 나사봉의 일단에 설치되는 구동모터로 이루어져, 구동모터가 나사봉을 회전시킴에 의해 제3렌즈부가 나사봉의 나사를 타고 제1렌즈부와 제2렌즈부 사이를 이동할 수 있도록 한 이동수단을 포함하여 구성된다.A dual magnification lens module for a thermal imaging camera according to the present invention for achieving the above object comprises: a first lens unit configured to capture an image by receiving light reflected from the subject to face the subject; A second lens unit positioned behind the first lens unit in the optical axis direction and configured to form an image received by the first lens unit by an infrared detector for converting and outputting an image into a digital image signal; A plurality of fixing bars installed across the second lens unit and the first lens unit to fix each other such that the second lens unit is positioned in an optical axis direction of the first lens unit; It is slidably installed between the fixing bars and positioned between the first lens unit and the second lens unit, and moves between the first lens unit and the second lens unit in the optical axis direction to change the image magnification and deteriorate. A third lens unit configured to compensate for the loss; And a screw rod installed through the first lens portion, the second lens portion, and the third lens portion to rotate therethrough, and a driving motor installed at one end of the screw rod. The lens unit comprises a moving means for moving between the first lens unit and the second lens unit by the screw of the screw rod.

또, 상기 고정바들 중 일부는 판형상으로서 길이방향으로 1개 이상의 장공을 갖고, 제3렌즈의 외주면에는 그 장공에 끼워지는 돌기가 형성된 것을 특징으로 한다.In addition, some of the fixing bars are plate-like, having at least one long hole in the longitudinal direction, and the outer peripheral surface of the third lens is characterized in that the projection is fitted to the long hole.

또한, 상기 구동모터는 구동정밀도 5㎛로 미세초점조정이 가능하도록 이루어짐을 특징으로 한다.In addition, the drive motor is characterized in that the fine focus adjustment is possible to drive precision 5㎛.

상기 해결수단에 의한 본 발명은 배율변환과 온도변화에 의한 렌즈의 굴절률 변화 때문에 발생하는 초점이동량의 보정이 가능하여 100K의 온도변화시에도 초점조절이 가능한 효과가 있는 것이다.The present invention by the above solution means that the amount of focus shift caused by the change of the refractive index of the lens due to the magnification conversion and the temperature change can be corrected, so that the focus can be adjusted even at the temperature change of 100K.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 열화상카메라용 이중배율 렌즈모듈의 Ge렌즈 개략도, 도 2는 본 발명의 열화상카메라용 이중배율 렌즈모듈의 사시도, 도 3은 본 발명의 열화상카메라용 이중배율 렌즈모듈의 제3렌즈부 상세도, 도 4 내지 도 5는 본 발명의 열화상카메라용 이중배율 렌즈모듈로 촬상한 흑백(4A,5A) 및 슈도칼라(4B,5B) 영상이다.1 is a schematic view of a Ge lens of a dual magnification lens module for a thermal imaging camera of the present invention, FIG. 2 is a perspective view of a dual magnification lens module for a thermal imaging camera of the present invention, and FIG. 3 is a dual magnification lens module for a thermal imaging camera of the present invention. 4 to 5 are black and white (4A, 5A) and pseudo color (4B, 5B) images captured by the dual magnification lens module for a thermal imaging camera of the present invention.

도면에 나타낸 바와 같이, 본 발명의 열화상카메라용 이중배율 렌즈모듈은 제1렌즈부(100)와, 제2렌즈부(200)와, 제3렌즈부(300)와, 다 수개의 고정바들(400,400')과, 이동수단(500)으로 구비된다.As shown in the drawings, the dual magnification lens module for a thermal imaging camera of the present invention includes a first lens unit 100, a second lens unit 200, a third lens unit 300, and a plurality of fixed bars. 400 and 400 'and a moving unit 500 are provided.

상기 제1렌즈부(100)는 Ge렌즈(L1) 1매로 구성되며 피사체와 대향하여 피사체에서 반사되는 빛을 수광하여 상을 포착하도록 형성된다.The first lens unit 100 includes one Ge lens L1 and is formed to capture an image by receiving light reflected from the subject to face the subject.

또, 제1렌즈부(100)의 Ge렌즈(L1)는 한쪽면이 비구면을 형성하도록 한다.In addition, one surface of the Ge lens L1 of the first lens unit 100 forms an aspherical surface.

렌즈부(100)의 후측에 위치하여, 상을 디지털 영상신호로 변환하여 출력하는 적외선검출기(600)로 제1렌즈부(100)가 수광한 상을 결상하도록 형성된다.An infrared detector 600 positioned at the rear side of the lens unit 100 and converting the image into a digital image signal is output to form an image received by the first lens unit 100.

또, 제2렌즈부(200)의 Ge렌즈(L2)를 제외한 Ge렌즈(L3,L4)는 한쪽면이 비구면을 형성하도록 한다.In addition, one side of the Ge lenses L3 and L4 except the Ge lens L2 of the second lens unit 200 forms an aspherical surface.

상기 제3렌즈부(300)는 Ge렌즈(L5) 1매로 구성되며 고정바들(400) 사이에 슬라이드 방식으로 이동가능하게 설치되어 제1렌즈부(100)와 제2렌즈부(200) 사이에 위치하여, 제1렌즈부(100)와 제2렌즈부(200) 사이를 광축방향으로 이동하여 상의 배율을 변환시키고 비열화를 보상하도록 형성된다.The third lens unit 300 is composed of one Ge lens (L5) and is installed to be movable in a sliding manner between the fixing bars 400 between the first lens unit 100 and the second lens unit 200. In this case, the first lens unit 100 and the second lens unit 200 are moved in the optical axis direction to convert the magnification of the image and compensate for deterioration.

또, 제3렌즈부(300)의 Ge렌즈(L5)는 한쪽면이 비구면을 형성하도록 한다.In addition, one surface of the Ge lens L5 of the third lens unit 300 forms an aspherical surface.

상기 각 렌즈부(100,200,300)의 Ge렌즈(L1,L2,L3,L4,L5)는 Zemax를 이용하여 설계하였으며 비냉각 열화상카메라의 경우에는 비냉각 열화상카메라의 특성 때문에 F-수가 1.0 ~1.5 정도의 범위로 Ge렌즈(L1,L2,L3,L4,L5)를 구성하는데 F-수가 작을수록 광학성능이 우수하다.Ge lenses (L1, L2, L3, L4, L5) of each lens unit (100, 200, 300) are designed using Zemax, and in the case of an uncooled thermal camera, the F-number is 1.0 to 1.5 due to the characteristics of the uncooled thermal camera. Ge lenses (L1, L2, L3, L4, L5) are configured in the range of accuracy, and the smaller the F-number, the better the optical performance.

따라서, 본 발명에서는 F/1.04로 두 개의 시야각을 갖는 이중배율의 Ge렌즈(L1,L2,L3,L4,L5)를 구성하였으며, 자세한 Ge렌즈(L1,L2,L3,L4,L5)의 설계사양은 표1 과 같다. Therefore, in the present invention, a double magnification Ge lens (L1, L2, L3, L4, L5) having two viewing angles is composed of F / 1.04, and detailed Ge lenses (L1, L2, L3, L4, L5) are designed. Specifications are shown in Table 1.

표1. 본 발명의 열화상카메라의 Ge렌즈(L1,L2,L3,L4,L5) 설계사양Table 1. Design Specification of Ge Lenses (L1, L2, L3, L4, L5) of Infrared Camera of the Present Invention

ItemsItems Design ResultDesign result Uncooled IR DetectorUncooled IR Detector 320x240, 25μm 320 x 240, 25 μm Spectral Range [μm] Spectral Range [μm] 7.5 ~ 13.07.5-13.0 Reference Wavelength [μm] Reference Wavelength [μm] 10.610.6 Zoom ratioZoom ratio 3 : 13: 1 Field of View [°]Field of View [°] Narrow (X 3)Narrow (X 3) 8 x 68 x 6 Wide (X 1)Wide (X 1) 24 x 1824 x 18 Effective Focal Length [mm]Effective Focal Length [mm] Narrow (X 3)Narrow (X 3) 55.055.0 Wide (X 1)Wide (X 1) 19.019.0 F-numberF-number 1.041.04 MTFMTF ≥ 0.5≥ 0.5 Transmission [%]Transmission [%] 78.578.5 Overall length [mm]Overall length [mm] 132.83132.83

이와 같은 Ge렌즈(L1,L2,L3,L4,L5)들은 온도변화에 따른 굴절률의 변화가 매우 크기 때문에 온도에 따른 광학계의 초점거리가 많이 변하게 되어 온도변화에 따른 비열화를 분석하여 보상을 하지 않을 경우에는 심각한 상의 흐림 현상이 나타나기 때문에 제3렌즈부(300)를 이동시켜 화질을 개선토록 하는 것이다.Such Ge lenses (L1, L2, L3, L4, L5) have a large change in refractive index due to temperature change, and thus the focal length of the optical system changes significantly according to the temperature. Otherwise, since a serious blur occurs, the image quality is improved by moving the third lens unit 300.

상기 다 수개의 고정바들(400,400')은 제2렌즈부(200)와 제1렌즈부(100)를 가로질러 설치되어 제2렌즈부(200)가 제1렌즈부(100)의 광축방향에 놓이게 서로를 고정하도록 형성된다.The plurality of fixing bars 400 and 400 ′ are installed across the second lens unit 200 and the first lens unit 100 so that the second lens unit 200 is positioned in the optical axis direction of the first lens unit 100. It is formed to secure each other to lay.

이때, 다 수개의 고정바들(400,400')은 제3렌즈부(300)가 광측방향으로 이동시에 제3렌즈부(300)를 지지하여 수평을 유지하는 역할을 한다.In this case, the plurality of fixing bars 400 and 400 ′ serve to maintain the level by supporting the third lens unit 300 when the third lens unit 300 moves in the light side direction.

또, 고정바들(400,400') 중 일부는 판형상으로 형성되고 길이방향으로 1개 이상의 장공(410)을 갖고, 제3렌즈부(300)의 외주면에는 그 장공(410)에 끼워지는 돌기(310)가 형성될 수도 있다.In addition, some of the fixing bars (400, 400 ') is formed in a plate shape and has at least one long hole 410 in the longitudinal direction, the projection 310 is fitted to the long hole 410 on the outer peripheral surface of the third lens unit 300 ) May be formed.

상기 이동수단(510)은 제1렌즈부(100)와 제2렌즈부(200) 및 제3렌즈부(300)를 가로질러 관통하게 설치되어 회전하는 나사봉(510)과, 나사봉(510)의 일단에 설치되는 구동모터(530)로 이루어져, 구동모터(530)가 나사봉(510)을 회전시킴에 의해 제3렌즈부(300)가 나사봉(510)의 나사를 타고 제1렌즈부(100)와 제2렌즈부(200) 사이를 이동할 수 있도록 형성된다.The moving means 510 is a screw rod 510 and a screw rod 510 which are installed to rotate through the first lens unit 100, the second lens unit 200, and the third lens unit 300. It consists of a drive motor 530 is installed at one end of the drive motor, the drive lens 530 rotates the screw rod 510, the third lens unit 300 is screwed on the screw rod 510, the first lens It is formed to be able to move between the portion 100 and the second lens unit 200.

이때, 상기 구동모터(530)는 구동정밀도 5㎛로 미세초점조정이 가능하도록 하여 온도 변화에 따른 미세한 비열화 보상이 가능하다. At this time, the drive motor 530 can be finely adjusted to the driving precision of 5㎛ fine compensation to the deterioration according to the temperature change.

상기와 같은, 본 발명은 제3렌즈부(300)의 광측방향이동으로 배율변환과 온도변화에 의한 렌즈의 굴절률 변화에서 발생하는 초점이동량의 보정이 가능하기 때문에 100K의 온도변화시에도 초점조절이 가능한 것이다.As described above, the present invention is capable of correcting the focus shift amount caused by the change in the refractive index of the lens due to the magnification conversion and the temperature change by the optical side movement of the third lens unit 300. It is possible.

본 발명에 의해 냉난방 시스템 제작 및 설치시 에너지 손실을 최소화하는데 사용되거나, 제품검사 또는 열분포 최적화 시스템을 구현하기 위한 연구장비로 활용되고, 그 외에 의료용 체열진단기나 공항검색대에서 조류독감 또는 신종플루에 감염된 사람을 검색하는데 활용되는 열화상카메라용 이중배율 렌즈모듈을 제공하는 데 있다.The present invention is used to minimize energy loss during the manufacturing and installation of air conditioning and heating systems, or as a research equipment for realizing a product inspection or heat distribution optimization system, and in addition to avian influenza or swine flu in medical thermographs or airport screening stations. The present invention provides a dual magnification lens module for a thermal imaging camera used to detect an infected person.

도 1은 본 발명의 열화상카메라용 이중배율 렌즈모듈의 Ge렌즈 개략도이다.1 is a schematic view of a Ge lens of a dual magnification lens module for a thermal imaging camera of the present invention.

도 2는 본 발명의 열화상카메라용 이중배율 렌즈모듈의 사시도이다.2 is a perspective view of a dual magnification lens module for a thermal imaging camera of the present invention.

도 3은 본 발명의 열화상카메라용 이중배율 렌즈모듈의 제3렌즈부 상세도이다.3 is a detailed view of a third lens unit of the dual magnification lens module for a thermal imaging camera of the present invention.

도 3 내지 도 4는 본 발명의 열화상카메라용 이중배율 렌즈모듈로 촬상한 흑백(4A,5A) 및 슈도칼라(4B,5B) 영상이다.3 to 4 are black and white (4A, 5A) and pseudo color (4B, 5B) images captured by the dual magnification lens module for a thermal imaging camera of the present invention.

<도면의 간단한 설명><Brief Description of Drawings>

100:제1렌즈 200:제2렌즈100: first lens 200: second lens

300:제3렌즈 310:돌기300: third lens 310: projection

400,400':고정바 410:장공400,400 ': Fixed bar 410: Long hole

500:이동수단 510:나사봉500: moving means 510: screw rod

530:구동모터 600:적외선검출기530: drive motor 600: infrared detector

L1,L2,L3,L4,L5:Ge렌즈L1, L2, L3, L4, L5: Ge lens

Claims (3)

피사체와 대향하여 피사체에서 반사되는 빛을 수광하여 상을 포착하도록 한 제1렌즈부(100);A first lens unit 100 configured to receive light reflected from the subject so as to face the subject to capture an image; 광축방향으로 제1렌즈부(100)의 후측에 위치하여, 상을 디지털 영상신호로 변환하여 출력하는 적외선검출기(600)로 제1렌즈부(100)가 수광한 상을 결상하도록 한 제2렌즈부(200);A second lens positioned at a rear side of the first lens unit 100 in the optical axis direction and configured to form an image received by the first lens unit 100 by an infrared detector 600 that converts the image into a digital image signal and outputs the image; Part 200; 상기 제2렌즈부(200)와 제1렌즈부(100)를 가로질러 설치되어 제2렌즈부(200)가 제1렌즈부(100)의 광축방향에 놓이게 서로를 고정하는 다수개의 고정바들(400,400');A plurality of fixing bars installed across the second lens unit 200 and the first lens unit 100 to fix the second lens unit 200 to be in the optical axis direction of the first lens unit 100 ( 400,400 '); 상기 고정바들(400,400') 사이에 슬라이드 방식으로 이동가능하게 설치되어 제1렌즈부(100)와 제2렌즈부(200) 사이에 위치하여, 제1렌즈부(100)와 제2렌즈부(200) 사이를 광축방향으로 이동하며 상의 배율을 변환시키고 비열화를 보상하도록 한 제3렌즈부(300); 및It is installed between the fixing bars (400, 400 ') in a slidable manner and is located between the first lens unit (100) and the second lens unit (200), so that the first lens unit (100) and the second lens unit ( A third lens unit 300 moving in the direction of the optical axis to convert the magnification of the image and compensate for deterioration; And 상기 제1렌즈부(100)와 제2렌즈부(200) 및 제3렌즈부(300)를 가로질러 관통하게 설치되어 회전하는 나사봉(510)과, 나사봉(510)의 일단에 설치되는 구동모터(530)로 이루어져, 구동모터(530)가 나사봉(510)을 회전시킴에 의해 제3렌즈부(300)가 나사봉(510)의 나사를 타고 제1렌즈부(100)와 제2렌즈부(200) 사이를 이동할 수 있도록 한 이동수단(500)을 포함하여 구성된, 열화상카메라용 이중배율 렌즈모듈.The screw rod 510 is installed to penetrate across the first lens unit 100, the second lens unit 200, and the third lens unit 300 to rotate, and is installed at one end of the screw rod 510. It consists of a drive motor 530, the drive motor 530 rotates the screw rod 510, the third lens unit 300 is screwed on the screw rod 510, the first lens unit 100 and the first A dual magnification lens module for a thermal imaging camera, comprising a moving unit (500) capable of moving between two lens units (200). 제1항에 있어서, 상기 고정바들(400,400') 중 일부는 판형상으로서 길이방향으로 1개 이상의 장공(410)을 갖고, 제3렌즈부(300)의 외주면에는 그 장공(410)에 끼워지는 돌기(310)가 형성된 것을 특징으로 하는 열화상카메라용 이중배율 렌즈모듈.The method of claim 1, wherein some of the fixing bars (400, 400 ') is a plate shape having one or more long holes (410) in the longitudinal direction, the outer peripheral surface of the third lens unit 300 is fitted to the long holes (410) Dual magnification lens module for a thermal imaging camera, characterized in that the projection 310 is formed. 제1항에 있어서, 구동모터(430)는 구동정밀도 5㎛로 미세초점조정이 가능하도록 이루어짐을 특징으로 하는 열화상카메라용 이중배율 렌즈모듈.The dual magnification lens module of claim 1, wherein the driving motor 430 is configured to enable fine focus adjustment with a driving precision of 5 μm.
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