WO2022160444A1 - 一种用于光谱成像的光学镜头 - Google Patents

一种用于光谱成像的光学镜头 Download PDF

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WO2022160444A1
WO2022160444A1 PCT/CN2021/082940 CN2021082940W WO2022160444A1 WO 2022160444 A1 WO2022160444 A1 WO 2022160444A1 CN 2021082940 W CN2021082940 W CN 2021082940W WO 2022160444 A1 WO2022160444 A1 WO 2022160444A1
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light source
barrel body
lens barrel
optical lens
lens
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PCT/CN2021/082940
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English (en)
French (fr)
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黄威
钟燕飞
张洪艳
李志刚
王桂强
许小京
张良培
罗旭东
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公安部物证鉴定中心
广州星博科仪有限公司
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Publication of WO2022160444A1 publication Critical patent/WO2022160444A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids

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  • the invention relates to an optical lens for spectral imaging, and relates to the technical field of spectral imaging.
  • Optical lens usually refers to a lens made of optical materials that can transmit light, which are sequentially installed in the lens barrel.
  • the basic function of the optical lens is to project the image of the target on the film or image chip (CCD/CMOS) through the refraction of light by the lens.
  • Spectral imaging is to image the target with different light wavelengths, and obtain a series of images from the same target with different light wavelengths to form an image set, or called a spectral image cube.
  • an electronic filter In order to capture spectral images quickly, an electronic filter is usually used to automatically set the wavelength of transmitted light through electronic technology. By continuously changing the wavelength of light transmitted by the electronic filter, automatic scanning and shooting of spectral images can be achieved.
  • the wavelength range of electronic filters is limited, and they are usually only used in the visible light and near-infrared regions. Spectral images in other wavelength ranges are also realized by narrow-band filters. Therefore, the process of shooting The filter needs to be changed constantly, the shooting process is slow and the operation is complicated.
  • the purpose of the present invention is to provide an optical lens for spectral imaging that can realize rapid scanning and shooting of spectral images.
  • an optical lens for spectral imaging the optical lens comprises:
  • a ring light source the front end of the lens barrel body is equipped with a ring light source capable of emitting multiple different wavelengths to provide illumination of different wavelengths for the imaging target, and the ring light source adopts a multi-band LED light source or a laser light source;
  • the lens barrel body is provided with a wire hole extending in the direction of the optical axis, and the wire hole is used for arranging a wire;
  • Electronic contacts the front and rear ends of the lens barrel body are provided with the electronic contacts, and the electronic contacts are connected with the wires in the lens barrel body.
  • the optical lens further includes a drive control board capable of controlling the ring light source to emit light in sequence, the drive control board is disposed in the camera body, and the drive control board is connected to the lens barrel body and the camera through wires or FPC The electronic contacts between the bodies are further connected to the ring light source through the wires in the wire holes.
  • a drive control board capable of controlling the ring light source to emit light in sequence
  • the drive control board is disposed in the camera body
  • the drive control board is connected to the lens barrel body and the camera through wires or FPC
  • the electronic contacts between the bodies are further connected to the ring light source through the wires in the wire holes.
  • the ring light source is connected with the lens barrel body through a quick interface.
  • the quick interface adopts a three-jaw quick bayonet.
  • the multi-band LED light sources or laser light sources are arranged on an annular structure at intervals.
  • the front end of the lens barrel body is further provided with a light shield for shielding ambient light and preventing interference.
  • the wire holes are through holes or trenches.
  • the present invention is provided with a ring light source, and the ring light source adopts an LED light source or a laser light source. Since the LED light source or the laser light source has a narrow-band luminescence spectrum, the narrow-band spectrum can be realized without installing a filter without the interference of ambient light. imaging;
  • the present invention controls the ring light source disposed at the front of the lens to emit light in sequence through the drive control board disposed in the camera body, and triggers the camera to shoot synchronously, so that rapid spectral image scanning and shooting can be achieved without manual switching or driving of the runner. Switch the filter to achieve fast scanning to capture spectral images;
  • the present invention is provided with a hood, and the hood installed on the LED light source or the laser light source can eliminate the interference of ambient stray light;
  • FIG. 1 is an overall schematic diagram of a lens body according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a front-end interface of a lens body according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a through hole used for wiring in a lens barrel of a lens body according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a groove for wiring in a lens barrel of a lens body according to an embodiment of the present invention.
  • the reference signs are: 1-lens barrel body; 2-through hole; 3-groove; 4-electronic contact; 5-quick interface; 6-ring light source.
  • spatially relative terms may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures, such as “inner”, “outer”, “inner” “, “outside”, “below”, “above”, etc.
  • This spatially relative term is intended to include different orientations of the device in use or operation other than the orientation depicted in the figures.
  • the optical lens for spectral imaging proposed by the present invention includes a lens barrel body; a ring light source, and a ring light source capable of emitting multiple different wavelengths is installed at the front end of the lens barrel body, so as to provide illumination of different wavelengths for the imaging target.
  • the ring light source adopts multi-band LED light source or laser light source; line hole, the lens barrel body is provided with a line hole extending in the direction of the optical axis, and the line hole is used to set the wire; electronic contacts, the front and rear ends of the lens barrel body are provided There are electronic contacts, and the electronic contacts are connected with the wires in the lens barrel body.
  • the LED light source or the laser light source provided in the present invention has a narrow-band luminescence spectrum, so that the narrow-band spectral imaging can be realized without installing a filter without the interference of ambient light.
  • the semiconductor light source has the characteristics of simple color and fast response.
  • the wavelength range of the light energy it emits is relatively narrow, which is somewhat similar to the light source illumination filtered by the narrow-band filter, which can achieve the same effect as the narrow-band filter. Imaging becomes possible.
  • the present invention designs and develops an optical lens for spectral imaging.
  • the optical lens for spectral imaging provided by the embodiment of the present invention includes:
  • the lens barrel body 1 is installed on the camera body, and an optical lens is arranged in the lens barrel body 1 for performing spectral imaging on an imaging target.
  • the front end of the lens barrel body 1 is installed with a ring light source 6 that can emit light energy of various wavelengths through the quick interface 5.
  • the ring light source 6 can use a multi-band LED light source or a laser light source to provide illumination of different wavelengths for the imaging target.
  • the lens barrel body 1 is provided with a line hole extending in the direction of the optical axis.
  • the line hole can be a through hole 2 or a groove 3. Set the wire.
  • the front and rear ends of the lens barrel body 1 are provided with electronic contacts 4 .
  • the electronic contacts 4 are connected to the wires in the lens barrel body 1 , and the electronic contacts 4 are used to provide power and control connections for the ring light source 6 .
  • the present invention also includes a drive control board capable of controlling the ring light source 6 to emit light in sequence.
  • the drive control board 6 of the light source can be installed in the camera body, and the power supply and control of the ring light source pass through the wires in the lens barrel body 1 and It is realized by the electronic contacts 4 at the front and rear ends of the lens barrel body 1 .
  • the quick interface 5 may use a three-claw quick bayonet, such as Nikon's F-mount, for example, but not limited to this.
  • the front end of the lens barrel body 1 is also installed with a light shield 7 through a connection interface, and the light shield 7 is used to block ambient light and prevent interference.
  • the connection interface can be connected in a threaded manner or in a quick interface manner.
  • the multi-band LED light sources or laser light sources can be arranged in a ring structure at intervals, and the number of light sources can be 3, 6, or 8, etc. This is an example, not limited to this, and can be based on actual needs It is determined that since the multi-band LED light sources or laser light sources arranged in front of the lens barrel body 1 have different wavelengths, the brightness can be individually lit and controlled.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

一种用于光谱成像的光学镜头，包括：镜筒本体（1）；环形光源（6），镜筒本体（1）的前端安装有能够发射多种不同波长的环形光源（6），用于为成像目标提供不同波长的照明；线孔（2，3），镜筒本体（1）上设置有沿光轴方向延伸的线孔（2，3），线孔（2，3）用于设置导线；电子触点（4），镜筒本体（1）的前端和后端均设置有电子触点（4），电子触点（4）与镜筒本体（1）内的导线连接。通过设置在相机本体内的驱动控制板控制设置在镜头前端的环形光源（6）依次发光，同步地触发相机进行拍摄，即可实现快速地光谱图像扫描拍摄，无需手动切换或驱动转轮切换滤光片，实现快速扫描拍摄光谱图像。

Description

一种用于光谱成像的光学镜头 技术领域
本发明是关于一种用于光谱成像的光学镜头，涉及光谱成像技术领域。
背景技术
光学镜头通常是指由可以透光的光学材料制作的透镜，依次安装在镜筒中所形成的产品，主要的用途是对目标成像，广泛应用于照相机、摄像机、监控摄像头，手机摄像头，机器视觉等。光学镜头的基本作用是通过透镜对光的折射把目标的像投射到底片或图像芯片(CCD/CMOS)上。
现有光学镜头根据不同的应用分为照相镜头、摄像镜头、手机镜头、监控镜头等。用于对目标进行光谱成像的镜头叫做光谱成像镜头。光谱成像是对目标分不同光波长进行成像，对同一个目标分不同的光波长得到一系列图像形成图像集合，或者说称为光谱图像立方体。
为了实现快速拍摄光谱图像，通常应用电子滤光器，通过电子技术实现对透过光波长的自动设置，通过连续改变电子滤光器透过的光波长，可以实现光谱图像的自动扫描拍摄。但是目前由于技术的原因，电子滤光器的使用波长范围还有一定的限制，通常只应用于可见光和近红外区域，其它波长范围的光谱图像还要靠窄带滤光片实现，因此拍摄的过程中需要不断更换滤光片，拍摄过程慢且操作复杂。
发明内容
针对上述问题，本发明的目的是提供一种能够实现快速扫描拍摄光谱图像的用于光谱成像的光学镜头。
为实现上述目的，本发明采取以下技术方案：一种用于光谱成像的光学镜头，该光学镜头包括：
镜筒本体；
环形光源，所述镜筒本体的前端安装有能够发射多种不同波长的环形光源，用于为成像目标提供不同波长的照明，所述环形光源采用多波段LED光源或激光光源；
线孔，所述镜筒本体上设置有沿光轴方向延伸的线孔，所述线孔用于设置导线；
电子触点，所述镜筒本体的前端和后端均设置有所述电子触点，所述电子触点 与所述镜筒本体内的导线连接。
优选地，该光学镜头还包括能够控制所述环形光源依次发光的驱动控制板，所述驱动控制板设置在相机本体内，所述驱动控制板通过导线或FPC连接到所述镜筒本体与相机本体之间的电子触点上，进而通过所述线孔内的导线与所述环形光源连接。
优选地，所述环形光源与镜筒本体通过快速接口连接。
优选地，所述快速接口采用三爪快速卡口。
优选地，所述多波段LED光源或激光光源间隔设置在一环形结构上。
优选地，所述镜筒本体前端还设置有用于遮挡环境光，防止干扰的遮光罩。
优选地，所述线孔为通孔或沟槽。
本发明由于采取以上技术方案，其具有以下优点：
1、本发明设置有环形光源，环形光源采用LED光源或激光光源，由于LED光源或激光光源具有窄带的发光光谱，因此在无环境光干扰的情况下，无需安装滤光片即可实现窄带光谱成像；
2、本发明通过设置在相机本体内的驱动控制板控制设置在镜头前端的环形光源依次发光，同步地触发相机进行拍摄，即可实现快速地光谱图像扫描拍摄，而无需手动切换或驱动转轮切换滤光片，从而实现快速扫描拍摄光谱图像；
3、本发明设置有遮光罩，安装在LED光源或激光光源上的遮光罩可以排除环境杂散光的干扰；
4、本发明镜筒本体内设置有让导线通过的通孔或沟槽，无需外加的线缆。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。在整个附图中，用相同的附图标记表示相同的部件。在附图中：
图1为本发明实施例的镜头本体整体示意图；
图2为本发明实施例的镜头本体前端接口示意图；
图3为本发明实施例的镜头本体的镜筒内的用于走线的通孔示意图；
图4为本发明实施例的镜头本体的镜筒内的用于走线的沟槽示意图；其中，
附图标记为：1-镜筒本体；2-通孔；3-沟槽；4-电子触点；5-快速接口；6-环形 光源。
具体实施方式
下面将参照附图更详细地描述本发明的示例性实施方式。虽然附图中显示了本发明的示例性实施方式，然而应当理解，可以以各种形式实现本发明而不应被这里阐述的实施方式所限制。相反，提供这些实施方式是为了能够更透彻地理解本发明，并且能够将本发明的范围完整的传达给本领域的技术人员。
应理解的是，文中使用的术语仅出于描述特定示例实施方式的目的，而无意于进行限制。除非上下文另外明确地指出，否则如文中使用的单数形式“一”、“一个”以及“所述”也可以表示包括复数形式。术语“包括”、“包含”、“含有”以及“具有”是包含性的，并且因此指明所陈述的特征、步骤、操作、元件和/或部件的存在，但并不排除存在或者添加一个或多个其它特征、步骤、操作、元件、部件、和/或它们的组合。文中描述的方法步骤、过程、以及操作不解释为必须要求它们以所描述或说明的特定顺序执行，除非明确指出执行顺序。还应当理解，可以使用另外或者替代的步骤。
为了便于描述，可以在文中使用空间相对关系术语来描述如图中示出的一个元件或者特征相对于另一元件或者特征的关系，这些相对关系术语例如为“内部”、“外部”、“内侧”、“外侧”、“下面”、“上面”等。这种空间相对关系术语意于包括除图中描绘的方位之外的在使用或者操作中装置的不同方位。
本发明提出的用于光谱成像的光学镜头，包括镜筒本体；环形光源，镜筒本体的前端安装有能够发射多种不同波长的环形光源，用于为成像目标提供不同波长的照明，所述环形光源采用多波段LED光源或激光光源；线孔，镜筒本体上设置有沿光轴方向延伸的线孔，线孔用于设置导线；电子触点，镜筒本体的前端和后端均设置有电子触点，电子触点与镜筒本体内的导线连接。本发明设置的LED光源或激光光源具有窄带的发光光谱，因此在无环境光干扰的情况下，无需安装滤光片即可实现窄带光谱成像。
随着半导体技术的快速发展，半导体光源得到迅速普及应用。半导体光源有颜色单纯、响应快速的特点，其发出的光能量波长范围比较狭窄，有点类似窄带滤光片过滤后的光源照明，可以达到窄带滤光片相同的效果，使直接用光源分光的光谱成像成为可能。为了提高光谱图像的拍摄速度，实现自动扫描拍摄，本发明设计研 发了一种用于光谱成像的光学镜头。
如图1～4所示，本发明实施例提供的用于光谱成像的光学镜头，包括：
镜筒本体1，镜筒本体1安装在相机本体上，镜筒本体1内设置有光学透镜，用于对成像目标进行光谱成像。
镜筒本体1的前端通过快速接口5安装有可以发射多种不同波长光能量的环形光源6，环形光源6可以采用多波段LED光源或激光光源，用于为成像目标提供不同波长的照明。
镜筒本体1上设置有沿光轴方向延伸的线孔，优选地，如图3、图4所示，线孔可以为通孔2或沟槽3，通孔2或沟槽3内用于设置导线。
镜筒本体1的前端和后端均设置有电子触点4，电子触点4与镜筒本体1内的导线连接，电子触点4用于为环形光源6提供电源和控制连接。
本发明的一些实施例中，还包括能够控制环形光源6依次发光的驱动控制板，光源的驱动控制板6可以安装在相机本体内，环形光源的供电和控制通过镜筒本体1内的导线和镜筒本体1前后端的电子触点4来实现。
本发明一些实施例中，快速接口5可以采用三爪快速卡口例如尼康的F口，以此为例，不限于此。
本发明一些实施例中，位于环形光源6前方，镜筒本体1前端还通过连接接口安装有遮光罩7，遮光罩7用于遮挡环境光，防止干扰。优选地，该连接接口可以采用螺纹方式连接也可以采用快速接口方式。
本发明的一些实施例中，多波段LED光源或激光光源可以间隔设置在一环形结构，光源数量可以3个、6个或8个等等，以此为例，不限于此，可以根据实际需要进行确定，由于设置在镜筒本体1前的多波段LED光源或激光光源具有不同波长，因此可以单独点亮和控制亮度。
最后应说明的是，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (7)

  1. 一种用于光谱成像的光学镜头，其特征在于，该光学镜头包括：
    镜筒本体；
    环形光源，所述镜筒本体的前端安装有能够发射多种不同波长的环形光源，用于为成像目标提供不同波长的照明，所述环形光源采用多波段LED光源或激光光源；
    线孔，所述镜筒本体上设置有沿光轴方向延伸的线孔，所述线孔用于设置导线；
    电子触点，所述镜筒本体的前端和后端均设置有所述电子触点，所述电子触点与所述镜筒本体内的导线连接。
  2. 根据权利要求1所述的光学镜头，其特征在于，该光学镜头还包括能够控制所述环形光源依次发光的驱动控制板，所述驱动控制板设置在相机本体内，所述驱动控制板通过导线或FPC连接到所述镜筒本体与相机本体之间的电子触点上，进而通过所述线孔内的导线与所述环形光源连接。
  3. 根据权利要求1所述的光学镜头，其特征在于，所述环形光源与所述镜筒本体通过快速接口连接。
  4. 根据权利要求3所述的光学镜头，其特征在于，所述快速接口采用三爪快速卡口。
  5. 根据权利要求1所述的光学镜头，其特征在于，所述多波段LED光源或激光光源间隔设置在一环形结构上。
  6. 根据权利要求1～5任一项所述的光学镜头，其特征在于，所述镜筒本体前端还设置有用于遮挡环境光、防止干扰的遮光罩。
  7. 根据权利要求1～5任一项所述的光学镜头，其特征在于，所述线孔为通孔或沟槽。
PCT/CN2021/082940 2021-01-28 2021-03-25 一种用于光谱成像的光学镜头 WO2022160444A1 (zh)

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