红外热像仪内軍镜头 Army lens for thermal imaging camera
本发明所属技犬领域 Technical dog field to which the present invention belongs
本实用新型涉及一种适用于红外像仪上的内置镜头。 The utility model relates to a built-in lens suitable for an infrared imager.
在本发明之前的现有 术 Prior art prior to the present invention
红外热像仪上使用的内置镜头和普通的光学镜头的成像原理、 即工 作原理是相同的, 均遵循透镜成像规律: l/u+l/v=l/f。 普通的光学镜头 的焦距一般为固定的, 也可以人工调节, 通常不具务电动聚焦功能, 也 不能进一步改变视场角的大小, 而且其重量、 体积均比较大, 手动调整 焦距既不方便也不准确, 还不容易密封, 这样就对热像仪的整体性能和 外形尺寸造成不利影响, 在红外热像仪日益精确、方便和小型化的今天, 普通的光学镜头已不能满足其安装和使用要求。 The built-in lens used in the infrared camera and the ordinary optical lens have the same imaging principle, that is, the working principle is the same, both follow the lens imaging rule: l / u + l / v = l / f. The focal length of an ordinary optical lens is generally fixed and can also be adjusted manually. Usually, it does not have the function of electric focusing, nor can it further change the angle of view, and its weight and volume are relatively large. It is neither convenient nor convenient to adjust the focal length manually. Accurate and not easy to seal, which will adversely affect the overall performance and overall size of the thermal imager. With the increasingly accurate, convenient and miniaturized infrared thermal imagers today, ordinary optical lenses can no longer meet their installation and use requirements .
发明目的 Object of the invention
本实用新型的目的在于提供一种能克服现有技术中存在的缺陷的红 外热像仪内置镜头, 它采用非球面透镜, 镜头内置, 并增设电动聚焦功 能, 外加改变视场角大小的扩展镜头, 使得镜头的体积和重量大为减小, 结构紧凑轻巧, 操作也更加方便。 The purpose of this utility model is to provide a built-in lens for an infrared thermal imager that can overcome the defects in the prior art. It uses an aspheric lens, the lens is built in, and an electric focus function is added, and an extended lens that changes the size of the field of view This makes the volume and weight of the lens greatly reduced, the structure is compact and light, and the operation is more convenient.
本发 B月的技术方案 The technical plan of the B month of the hair
本实用新型的目的是这样实现的: 一种红热像仪内置镜头, 包括设 置在热像仪机芯内的镜座 21、 第一透镜 15、 第二透镜 11、 第三透镜 10; 其中: 所述的红外热像仪内置镜头还包括有电动机 31, 所述第一、 二 透镜 15、 11均安装在物镜框 12内, 所述的物镜框 12与所述镜座 21之 间固定连接并间隔一个适宜的距离, 所述的第三透镜 10 安装在位于所
述镜座 21和物镜框 12之间并可以沿轴向移动的调焦镜框 8内, 该第三 透镜 10与所述的第一、 二透镜 15、 11处在同一中心轴线上, 所述电动 机 31通过电机座 35固定安装在所述镜座 21 上, 并通过传动装置与所 述调焦镜框 8相连。 The purpose of the present invention is achieved as follows: A built-in lens of a red thermal imager includes a lens holder 21, a first lens 15, a second lens 11, and a third lens 10 disposed in a thermal imager movement; wherein: The built-in lens of the infrared camera further includes a motor 31. The first and second lenses 15, 11 are installed in an objective lens frame 12, and the objective lens frame 12 and the lens base 21 are fixedly connected and At a suitable distance, the third lens 10 is installed at The third lens 10 and the first and second lenses 15 and 11 are located on the same central axis between the lens holder 21 and the objective lens frame 12 and can be moved in the axial direction. The motor 31 is fixedly mounted on the lens base 21 through a motor base 35, and is connected to the focusing lens frame 8 through a transmission device.
本实用新型的红外热像仪内置镜头, 由于它采用小型电动机带动相 应的传动装置, 通过依次改变镜头的焦距来实现自动调焦目的, 从而避 免了传统的手动调焦方式所带来的不便捷和不准确等问题。 而且由于不 必再用手操作调焦, 非球面的成像镜头可以内置在机芯内, 能够方便进 行密封, 有效地改善了热像仪的成像质量和外观尺寸, 同时, 镜头以及 热像仪的体积和重量也大大减小了。 而镜头的内置方式, 又为进一步改 变视场角的大小提供了便利, 可以很方便地采用外加扩展镜头的方法来 进一步改变其视场角大小。 The infrared camera of the utility model has a built-in lens. Because it uses a small motor to drive the corresponding transmission device, the focus of the lens is changed sequentially to achieve the purpose of automatic focusing, thereby avoiding the inconvenience brought by the traditional manual focusing method. And inaccuracies. In addition, since it is no longer necessary to manually adjust the focus, the aspherical imaging lens can be built into the movement, which can be easily sealed, which effectively improves the imaging quality and appearance size of the thermal imager. At the same time, the volume of the lens and the thermal imager And the weight is also greatly reduced. The built-in method of the lens provides convenience for further changing the size of the field of view. The method of adding an extended lens can be used to further change the size of the field of view.
附图说明 BRIEF DESCRIPTION OF THE DRAWINGS
图 1是本实用新型的结构示意图。 FIG. 1 is a schematic structural diagram of the present invention.
图 2是图 1的 A— A视图。 FIG. 2 is a view A—A of FIG. 1.
图 3是图 1的 B— B视图。 Fig. 3 is a B-B view of Fig. 1.
图 4是图 1的 ( 一( 视图。 Fig. 4 is a view of Fig. 1.
图 5是图 1的 D— D视图。 FIG. 5 is a D-D view of FIG. 1.
图中标记分别是: 调焦丝杆 1、 调焦连件 2、 压簧 3、 遮光罩 4、 光 束探测器 5、 螺钉 6、 活动光栏 7、 调焦镜框 8、 压圈 9、 第三透镜 10、 第二透镜 11、 物镜框 12、 物镜压圈 13、 装饰圈 14、 第一透镜 15、 螺 钉 16、 导柱 17、 螺钉 18、 盘轮 19、 电机支架 20、 镜座 21、 定位块 22、
销钉 23、 拨杆弹簧 24、 螺钉 25— 28、 黑屏 29、 绝缘块 30、 电动机 31、 支架 32、 螺钉 33、 34、 电机座 35、 螺钉 36、 电机 37、 连杆 38、 销钉 39、 螺钉 40、 41、 转座 42、 拉簧 43、 螺钉 44一 47、 轴 48、 垫圈 49、 螺钉 50。 The marks in the picture are: focusing screw 1, focusing link 2, compression spring 3, hood 4, beam detector 5, screw 6, movable light bar 7, focusing lens frame 8, pressure ring 9, third Lens 10, second lens 11, objective lens frame 12, objective lens ring 13, decorative ring 14, first lens 15, screw 16, guide post 17, screw 18, disk wheel 19, motor bracket 20, lens holder 21, positioning block twenty two, Pin 23, lever spring 24, screw 25-28, black screen 29, insulation block 30, motor 31, bracket 32, screw 33, 34, motor base 35, screw 36, motor 37, connecting rod 38, pin 39, screw 40 41, turn base 42, tension spring 43, screws 44-47, shaft 48, washer 49, screw 50.
实施例 Examples
下面结合附图及实施例对本实用新型作一步的说明。 In the following, the utility model will be described in detail with reference to the drawings and embodiments.
请参阅附图 1一 5, 本实用的红外热像仪内置镜头包括设置在热像 仪机芯内的镜座 21、 光束探测器 5、 第一透镜 15、 第二透镜 11和第三 透镜 10, 其中, 所述的光束探测器 5安装在镜座 21 内, 所述第一、 二 透镜 15、 11均安装在物镜框 12内并通过物镜压圈 13相互压紧, 所述 的物镜框 12与所述镜座 21之间固定连接并间隔一个适宜的距离, 所述 的第三透镜 10安装在位于所述光束探测器 5和物镜框 12之间的调焦镜 框 8内并由压圈 9压紧, 该第三透镜 10与所述的光束探测器 5和第一、 二透镜 15、 11 处在同一中心轴线上, 电动机 31通过电机座 35固定安 装在所述镜座 21上, 并通过由调焦丝杆 1、 调焦连件 2和压簧 3所组 成的传动装置与所述调焦镜框 8相连, 所述调焦镜框 8可以在所述光束 探测器 5和物镜框 12之间的范围内沿轴向进行移动。 Please refer to FIGS. 1 to 5. The built-in lens of the practical infrared camera includes a lens holder 21, a light beam detector 5, a first lens 15, a second lens 11, and a third lens 10, which are arranged in the camera body. Wherein, the beam detector 5 is installed in the lens holder 21, the first and second lenses 15, 11 are installed in the objective lens frame 12 and pressed against each other by the objective lens pressing ring 13, and the objective lens frame 12 The third lens 10 is fixedly connected to the lens base 21 and spaced at an appropriate distance. The third lens 10 is installed in a focusing lens frame 8 located between the beam detector 5 and the objective lens frame 12 and is held by a pressure ring 9 The third lens 10 is pressed on the same central axis as the beam detector 5 and the first and second lenses 15 and 11. The motor 31 is fixedly mounted on the lens base 21 through the motor base 35 and passes through the lens base 21. A transmission device composed of a focusing screw rod 1, a focusing link 2 and a compression spring 3 is connected to the focusing lens frame 8, and the focusing lens frame 8 may be between the beam detector 5 and the objective lens frame 12. Move in the axial direction within the range.
所述的调焦丝杆 1的外表面为螺纹杆, 它被固定安装在所述电动机 31 的主动旋转轴上, 所述调焦连件 2 的一端通过其上设置的螺纹孔与 该调焦丝杆 1相连, 该调焦连件 2的另一端通过螺钉 33与所述调焦镜 框固定连接, 在该调焦连件 2临近所述调焦镜框 8的这一端还设置有一 个压板, 所述的压簧 3被置于该压板和座 21之间。
在所述的镜座 21 上临近所述调焦镜框 8 的一侧安装有遮光罩 4, 它与所述的镜座 21相互配合, 所述的光束探测器 5包裹其中, 在所述 遮光罩 4的外侧还设置有活动光栏 7, 该活动光栏 7通过螺钉 6与镜座 21 相连接, 此外, 在该活动光栏 7和所述调焦镜框 8之间还设置有黑 屏 29。 The outer surface of the focusing screw 1 is a threaded rod, which is fixedly mounted on the active rotation shaft of the motor 31. One end of the focusing link 2 is connected to the focusing through a screw hole provided thereon. The screw rod 1 is connected, the other end of the focusing link 2 is fixedly connected to the focusing lens frame by a screw 33, and a pressing plate is also provided at the end of the focusing link 2 adjacent to the focusing lens frame 8. The compression spring 3 described above is placed between the compression plate and the seat 21. A light shield 4 is installed on the side of the lens base 21 adjacent to the focusing lens frame 8 and cooperates with the lens base 21. The light beam detector 5 is wrapped in the light shield A movable light bar 7 is also provided on the outer side of 4. The active light bar 7 is connected to the lens base 21 by screws 6. In addition, a black screen 29 is provided between the active light bar 7 and the focus lens frame 8.
所述的电动机 31与所述电机座 35之间通过螺钉 36固定在一起, 在所述的物镜压圈 13的最外端还安装有装饰圈 14。 The motor 31 and the motor base 35 are fixed together by screws 36, and a decorative ring 14 is also installed on the outermost end of the objective lens pressing ring 13.
在进行调焦操作时, 启动电动机 31, 带动与该电动机 31 同轴的调 焦丝杆 1在原位旋转, 所述的调焦连件 2则会通过螺纹配合而沿轴向进 行移动, 这样, 与该焦丝杆 1 连接在一起的调焦镜框 8和第三透镜 10 就会随之而产生向前或向后的位移, 与安装在物镜框 12 内的第一、 二 透镜 15、 11 之间形成相对运动, 直到达到最佳的聚焦效果, 在拍摄完 毕后, 并闭电动机 31, 所述的调焦连件 2则会因压簧 3 的弹力作用下 回复原位, 并带动调焦镜框和第三透镜 10—同回位。 During the focusing operation, the motor 31 is started to drive the focusing screw 1 that is coaxial with the motor 31 to rotate in the original position, and the focusing link 2 will move in the axial direction through screwing. The focus lens frame 8 and the third lens 10 connected with the focus screw rod 1 will be displaced forward or backward accordingly, and the first and second lenses 15, 11 installed in the objective lens frame 12 A relative movement is formed between them until the best focusing effect is achieved. After the shooting is completed, the motor 31 is closed, and the focusing link 2 will return to its original position due to the elastic force of the compression spring 3 and drive the focusing. The frame and the third lens 10 are in the same position.
由于上述包括镜头在内的组件均设置在热像仪的机芯内, 又为进一 步改变视场角的大小提供了便利, 可以很方便地采用在该机芯外镜头的 适宜位置增设扩展镜头的方法来进一步改变其视场角大小。
Since the above-mentioned components including the lens are all set in the movement of the thermal imager, it also provides convenience for further changing the size of the field of view. It can be easily adopted to add an extension lens at a suitable position of the lens outside the movement. Method to further change its field of view size.