阅读说明：本技术 一种光源一体化成像镜头及光谱图像摄取装置、方法 (Light source integrated imaging lens and spectral image shooting device and method ) 是由 黄威 钟燕飞 张洪艳 李志刚 王桂强 许小京 张良培 罗旭东 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种光源一体化成像镜头及光谱图像摄取方法,光谱成像技术。针对现有技术中镜头设置滤光模块导致的成本、体积和重量问题提出本方案。主要为在镜头本体前端设置单色光源以实现窄光谱的照明环境。优点在于,利用单色光源进行摄像照明,可以得到波长范围很窄的光谱图像。镜头本体内直接省去电子滤光器,镜头整体明显得到体积缩小和重量降低的效果。通过多种单色光源分别照明和同步拍摄,即可取得多光谱的光谱图像。(The invention discloses a light source integrated imaging lens, a spectral image shooting method and a spectral imaging technology. The scheme is provided aiming at the problems of cost, volume and weight caused by the fact that the filtering module is arranged on the lens in the prior art. The lens is mainly characterized in that a monochromatic light source is arranged at the front end of the lens body to realize a narrow-spectrum lighting environment. The advantage is that the spectral image with narrow wavelength range can be obtained by using the monochromatic light source for shooting and lighting. An electronic filter is directly omitted in the lens body, and the whole lens obviously achieves the effects of volume reduction and weight reduction. And respectively illuminating and synchronously shooting through various monochromatic light sources to obtain a multispectral spectral image.)

1. A light source integrated imaging lens includes a lens body (20); the novel camera lens is characterized in that a light source module (10) is arranged at the front end of a lens body (20), and the rear end of the light source module (10) is connected with the front end of the lens body (20); a light-emitting component is arranged on the front side of the light source module (10); the light-emitting component consists of more than one monochromatic light source; the lens body (20) is internally provided with a wire set, the wire set extends along the optical axis direction, one end of the wire set, which is close to the light source module (10), is electrically connected with the light-emitting component, and the other end of the wire set extends to the rear end of the lens body (20); the rear end of the lens body (20) is provided with a first quick bayonet (21).

2. The light source integrated imaging lens according to claim 1, wherein the lens body (20) is provided with a wire groove or a through hole extending in the optical axis direction for accommodating the wire group.

3. The light source-integrated imaging lens according to claim 1, wherein the light emitting component is an LED light source or a laser light source or a combination thereof.

4. The light source integrated imaging lens according to claim 1, wherein the light source module (10) is detachably connected to the lens body (20); the front end of the lens body (20) is provided with a second quick bayonet (22), and the second quick bayonet (22) is used for being connected with the rear end of the light source module (10) in a clamping mode.

5. The light source-integrated imaging lens according to claim 1, wherein the wire set is in contact connection with the light emitting assembly.

6. A spectral image capturing device, comprising a camera host (30), characterized by further comprising the light source-integrated imaging lens according to any one of claims 1 to 5; the camera host (30) is provided with a light source driving module (31) and an image acquisition chip (32), and the light source integrated imaging lens is connected with the camera host (30) through a first quick bayonet (21); the optical axis of the light source integrated imaging lens points to the image acquisition chip (32); the light source driving module (31) is electrically connected with the wire set at the extended end contact point at the rear end of the lens body (20).

7. A spectral image capturing method characterized by performing spectral image capturing using the spectral image capturing apparatus according to claim 6.

8. The spectral image capturing method according to claim 7, wherein the light emitting element is provided to be composed of more than one monochromatic light source; after the interference of the ambient light is shielded, different monochromatic light sources are lightened one by one, and spectral images of the corresponding wavelengths of the monochromatic light sources are obtained.

9. The method for capturing a spectral image according to claim 8, wherein the light sources with different wavelengths are arranged in a staggered manner and controlled to be respectively turned on by the driving board, and the camera host 30 is synchronously controlled to capture a spectral image with a corresponding wavelength.

Technical Field

The invention relates to a spectral imaging technology, in particular to a light source integrated imaging lens, a spectral image shooting device and a spectral image shooting method.

Background

The spectral imaging is different from the traditional optical imaging, and is an optical imaging technology which corresponds to different spectrums or wavelengths of a shooting target by using a filtering technology or a light splitting technology on the basis of the traditional optical imaging. A collection of optical images of multiple spectra or wavelengths is taken simultaneously to obtain a spectral image cube. The filtering technique can be implemented by using optical filters or electronic filters, and the beam splitting technique can be implemented by using prisms or gratings. By using the electronic filter, the target can be subjected to spectral scanning imaging rapidly.

However, the filter modules such as the optical filter or the electronic filter must be arranged in or in front of or behind the lens, so that the lens or the system is complex and the cost is high, and the volume and the weight of the lens are greatly increased. How to realize the optimization of a spectral imaging system is a problem to be solved urgently in the industry.

Disclosure of Invention

The invention aims to provide a light source integrated imaging lens, a spectral image shooting device and a spectral image shooting method, which are used for reducing the cost of a lens or a system, reducing the volume and reducing the weight.

The invention relates to a light source integrated imaging lens, which comprises a lens body; the front end of the lens body is provided with a light source module, and the rear end of the light source module is connected with the front end of the lens body; the front side of the light source module is provided with a light-emitting component; the light-emitting component consists of more than one monochromatic light source; the lens body is internally provided with a wire group, the wire group extends along the direction of an optical axis, one end of the wire group close to the light source module is electrically connected with the light-emitting component, and the other end of the wire group extends to the rear end of the lens body; the rear end of the lens body is provided with a first quick bayonet.

Further, the lens body is provided with a wire groove or a through hole extending along the optical axis direction for accommodating the wire group.

Further, the light emitting component is an LED light source or a laser light source or a combination thereof.

Furthermore, the light source module is detachably connected with the lens body; the front end of the lens body is provided with a second quick bayonet which is used for being connected with the rear end of the light source module in a clamping mode.

Further, the wire group is in contact connection with the light-emitting component.

A spectrum image shooting device comprises a shooting host and a light source integrated imaging lens; the camera host is provided with a light source driving module and an image acquisition chip, and the light source integrated imaging lens is connected with the camera host through a first quick bayonet; the optical axis of the light source integrated imaging lens points to the image acquisition chip; the light source driving module is electrically connected with the wire group at the extending end contact point at the rear end of the lens body.

A spectral image shooting method utilizes the spectral image shooting device to shoot spectral images.

Further, the light-emitting component is arranged to be composed of more than one single-color light source; after the interference of the ambient light is shielded, different monochromatic light sources are lightened one by one, and spectral images of the corresponding wavelengths of the monochromatic light sources are obtained.

Further, the light sources with different wavelengths are arranged in a staggered manner and controlled to be respectively turned on through the driving board, and the camera host 30 is synchronously controlled to capture the spectrum images with corresponding wavelengths.

The light source integrated imaging lens, the spectral image shooting device and the spectral image shooting method have the advantages that the monochromatic light source arranged at the front end of the lens body is used for shooting and illuminating, and imaging data with very good wavelength unicity can be obtained. The pressure in the lens body is reduced, and an electronic filter is not required to be arranged directly. Compared with the prior spectral imaging technology, the method has the advantages of reduced volume, reduced cost and reduced weight. And respectively illuminating and synchronously shooting through various monochromatic light sources to obtain a multispectral spectral image.

The detachable connection also makes the camera lens change different light sources more convenient. When more than one monochromatic light source is arranged, the spectral images corresponding to different wavelengths can be continuously shot without replacing the light source module, and the working efficiency is obviously improved.

Drawings

Fig. 1 is a schematic structural view of a spectral image capturing apparatus according to the present invention.

Detailed Description

The light source integrated imaging lens comprises a light source module 10 and a lens body 20 which are connected with each other. The spectral image capturing device of the present invention, as shown in fig. 1, includes a camera host 30 and the light source integrated imaging lens mounted and connected thereto.

The light source module 10 may be a lamp set having an annular structure, or may be a lamp set disposed at the front edge of the lens body 20. In the present invention, taking the ring structure as an example, the center of the light source module 10 is provided with a transparent sheet or directly hollowed out to prevent light from entering the lens body 20. The lens body 20 is provided with a plurality of optical modules, and what kind of optical modules are arranged and the arrangement relationship of the optical modules is the prior art. In the present invention, the lens body 20 may be selectively provided with a filter or an electronic filter or without any filter module. The present invention may work in a solution without a filtering module, but does not represent a solution excluding the filtering module. With the support of the light source module 10, even if the filter module is selectively disposed, the filter module with lower cost or smaller volume can be selected without reducing the original spectrum capturing effect.

The rear end of the light source module 10 is detachably connected with the front end of the lens body 20, and a second fast bayonet 22 matched with the rear end of the light source module is arranged at the connection position. The rear end of the lens body 20 is detachably connected with the front end of the camera main body 30 through a first quick bayonet 21. The clamping structure of the lens is the existing mature technology, and the first fast bayonet 21 and/or the second fast bayonet 22 can directly borrow various clamping interfaces of existing various shooting devices, such as: EF bayonet from canon, F bayonet from nikon, alpha bayonet from sony, PK bayonet from binge, 4/3 bayonet from panasonic, and the like.

Electronic contacts for realizing electrical connection are arranged in the first quick bayonet 21 and/or the second quick bayonet 22. The electronic contact can be used for quickly realizing connection and disassembly, and has the characteristics of small occupied part space, light weight and low cost.

The camera host 30 is provided with an image capturing chip 32 aligned with the optical axis of the lens body 20. The front side of the light source module 10 is provided with a concentric light emitting assembly. The light emitting assembly consists of more than one monochromatic light source. The lens body 20 is provided with a wire set extending from the front end to the rear end of the lens body 20 along the optical axis direction. The camera host 30 is further provided with a light source driving module 31, and the light emitting assembly is electrically connected with the light source driving module 31 through a wire set.

For storage convenience, the lens body 20 may be provided with a wire groove or a through hole for accommodating the wire set. The light-emitting component is an LED light source or a laser light source. The light source driving module 31 supplies power and controls signals to the light emitting elements through the line group. Each monochromatic light source can be realized by only one light source respectively or by a combination of a plurality of monochromatic light sources. When implemented by combining a plurality of monochromatic light sources, the monochromatic light sources may be distributed with a shift.

The spectral image shooting method comprises the following steps: the light source integrated imaging lens is arranged on a camera host to shield the interference of ambient light, for example, a black room is adopted. When the light emitting elements are composed of more than one monochromatic light source, the light source driving module 31 controls the light emitting elements to light color one by one. The monochromatic light is reflected from the object and enters the lens body 20, and reaches the image acquisition chip 32 after being subjected to a plurality of optical processes in the lens body 20, so that a spectral image of the lighted monochromatic light with the corresponding wavelength is obtained. If N kinds of monochromatic light sources form the light-emitting component, N spectral images with different wavelengths can be obtained in one shooting process, and the efficiency is obviously improved compared with the prior art. The corresponding spectral image is generated by utilizing the gradual change of the monochromatic light sources without considering the filtering quality and performing the light splitting treatment. The weight and the cost of the whole lens are obviously reduced. The less optical modules are passed by the light reflected by the object, the lower the distortion degree is, the lower the light energy loss is, and the image quality is effectively improved compared with the prior art.

In another specific example of the present invention, when the light emitting component is only a monochromatic light source, the interference of ambient light is shielded, and the light source driving module 31 directly controls the light emitting component to light up and output monochromatic light for irradiation, so as to finally obtain a spectral image of the monochromatic light with a wavelength corresponding to the monochromatic light.

Of course, it is obvious that the light source driving module 31 can control the brightness of the light emitting assembly under the concept of the present invention; it is also obvious that the light source driving module 31 controls the local light emitting elements to light up.

With the rapid development of semiconductor technology, semiconductor light sources are rapidly becoming popular. The semiconductor light source has the characteristics of simple color and quick response, the wavelength range of the light energy emitted by the semiconductor light source is narrower, the semiconductor light source is somewhat similar to the light source illumination after being filtered by the narrow-band filter, the same effect of the narrow-band filter can be achieved, and the light splitting optical imaging directly using the light source becomes possible.

It will be apparent to those skilled in the art that various other changes and modifications may be made in the above-described embodiments and concepts and all such changes and modifications are intended to be within the scope of the appended claims.