CN214583656U - Handheld common-caliber imaging spectrometer for prism light splitting - Google Patents
Handheld common-caliber imaging spectrometer for prism light splitting Download PDFInfo
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- CN214583656U CN214583656U CN202120912416.6U CN202120912416U CN214583656U CN 214583656 U CN214583656 U CN 214583656U CN 202120912416 U CN202120912416 U CN 202120912416U CN 214583656 U CN214583656 U CN 214583656U
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Abstract
The utility model discloses a hand-held type of prism beam splitting is bore imaging spectrometer altogether, the spectrum appearance includes leading objective, beam splitter prism, space dimension detector, collimating mirror, two Amici prisms, formation of image mirror, linear array detector, wherein: the front objective lens is positioned at the foremost end of the spectrometer, and the beam splitter prism is positioned on the right side of the front objective lens; the space dimension detector is arranged above the beam splitter prism, and the collimating mirror is arranged on the right side of the beam splitter prism; the double Amici prisms are arranged on the right side of the collimating mirror; the imaging mirror is arranged on the right side of the double Amici prism, and the linear array detector is arranged on the right side of the imaging mirror; the front objective lens, the beam splitter prism, the collimating lens, the double Amici prism and the imaging lens all share an optical axis. The spectrometer has the advantages of coaxial light path, high stability, high energy utilization rate and good imaging quality, and can be suitable for civil fields such as food rapid detection.
Description
Technical Field
The utility model relates to an optical system technical field especially relates to a hand-held type of prism beam splitting is bore imaging spectrometer altogether.
Background
Imaging spectroscopy technology has emerged in the eighties of the last century, and integrates optics, spectroscopy, precision mechanics, electronic technology and computer technology, and is an innovation on the basis of multidisciplinary cross fusion. Any object always emits visible or invisible light radiation (electromagnetic radiation), all substances have inherent emission and reflection (scattering) characteristic spectrums, the category and the composition of the object can be identified through analyzing the characteristic spectrums, the imaging spectrometer can obtain an optical remote sensing instrument of 'map integration' of two-dimensional space information and one-dimensional spectrum information of a measured target, and obtained image Data is called as a 'Data Cube' (Data Cube).
The acquisition of spectral information is to separate the light rays with different wavelengths and the same incident angle through a dispersion element, the existing mature dispersion element is provided with a prism element, different wavelengths correspond to different refractive indexes to generate different emergent deflection angles to cause light splitting, the single prism dispersion principle is simple and convenient to apply, but the single prism dispersion element has many inevitable defects, for example, the spectral resolution has serious nonlinearity, and the spectral resolution at the short wave position and the long wave position can be different by more than 10 times; the spatial incident angles corresponding to different field angles in the spatial direction are different, so that spectral lines are bent; the different angular amplification ratios of different spectral bands bring color distortion and other problems.
Disclosure of Invention
The utility model aims at providing a hand-held type of prism beam splitting is bore imaging spectrometer altogether, this spectrum appearance coaxial light path, stability are high, energy utilization is high, the imaging quality is good, applicable in civilian fields such as food short-term test.
The utility model aims at realizing through the following technical scheme:
the utility model provides a hand-held type of prism beam splitting is bore imaging spectrometer altogether, the spectrum appearance includes leading objective, beam splitter prism, space dimension detector, collimating mirror, two Amici prisms, imaging mirror, linear array detector, wherein:
the front objective lens is positioned at the foremost end of the spectrometer, and the beam splitter prism is positioned on the right side of the front objective lens;
the space dimension detector is arranged above the beam splitter prism, and the collimating mirror is arranged on the right side of the beam splitter prism;
the double Amici prisms are arranged on the right side of the collimating mirror;
the imaging mirror is arranged on the right side of the double Amici prism, and the linear array detector is arranged on the right side of the imaging mirror;
the front objective lens, the beam splitter prism, the collimating lens, the double Amici prism and the imaging lens all share an optical axis.
The double Amicii prism is formed by splicing three triangular prisms, wherein the first triangular prism is made of crown glass with medium dispersion capacity;
the second prism is made of high-dispersion flint glass, is positioned between the first prism and the third prism and is in a symmetrical structure;
the third prism is also made of crown glass with a medium dispersion capacity.
The technical indexes of the spectrometer comprise:
By the aforesaid the technical scheme provided by the utility model can see out, above-mentioned spectrum appearance coaxial light path, stability are high, energy utilization is high, the imaging quality is good, applicable in civilian fields such as food short-term test.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a handheld common-aperture imaging spectrometer for splitting light by a prism according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the dual Amici prism of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the present invention will be described in further detail with reference to the accompanying drawings, and as shown in fig. 1, the embodiment of the present invention provides a handheld common-caliber imaging spectrometer structure schematic diagram for prism splitting, wherein the spectrometer mainly includes a front objective 1, a splitting prism 2, a spatial dimension detector 3, a collimating mirror 4, a dual Amici prism 5, an imaging mirror 6, and a linear array detector 7, wherein:
the front objective lens 1 is positioned at the foremost end of the spectrometer, the beam splitter prism 2 is positioned at the right side of the front objective lens 1, and a light beam emitted by a target scene at infinity enters the beam splitter prism 2 after passing through the front objective lens 1;
the space dimension detector 3 is arranged above the beam splitter prism 2, and the collimating mirror 4 is arranged on the right side; the beam splitter prism 2 splits an incident beam into two beams, and one beam is reflected to the space dimension detector 3 and is used for acquiring the space information of a target scene; the other beam enters the collimating lens 4 and becomes a parallel beam after being processed by the collimating lens 4;
the double Amici prism 5 is arranged on the right side of the collimating mirror 4, the parallel light beams enter the double Amici prism 5, and the double Amici prism 5 performs light splitting processing on the parallel light beams;
the imaging mirror 6 is arranged on the right side of the double Amici prism 5, the linear array detector 7 is arranged on the right side of the imaging mirror 6, the light beam after the light splitting treatment passes through the imaging mirror 6 and finally irradiates on the linear array detector 7, and the linear array detector 7 detects and acquires the spectral information of the target scenery;
the front objective lens, the beam splitter prism, the collimating lens, the double Amici prism and the imaging lens all share an optical axis.
Fig. 2 is a schematic structural diagram of a double Amici prism of the present invention, wherein the double Amici prism 5 is formed by splicing three triangular prisms, and the first triangular prism is made of crown glass with medium dispersion capacity; the second prism is made of high-dispersion flint glass, is positioned between the first prism and the third prism and is in a symmetrical structure; the third prism is also made of crown glass with a medium dispersion capacity.
In addition, the technical indexes of the spectrometer comprise: relative aperture 2; the field angle of the space camera is 46 degrees; the field angle of the spectrometer is +/-1 degree; magnification ratio 1: 1; the working wavelength is in the range of 486 nm-900 nm.
It is to be noted that the embodiments of the present invention not described in detail belong to the prior art known to those skilled in the art, for example, the eccentricity or inclination angle of the optical surface, the distance between the surfaces, and the optical material used, etc., and these modifications and changes do not depart from the essential scope of the present invention.
To sum up, the spectrometer of the utility model has the following advantages:
1. by adopting a design scheme with a common caliber, the spectral information of the target scenery is acquired in real time, and the method is convenient and quick;
2. the prism dispersion scheme is adopted, the optical efficiency is high, and the symmetrical prism form ensures that the optical path is coaxial, the structure is compact, the system stability is good, and the reliability is high;
3. two detectors are adopted, one area array detector is used for obtaining the space two-dimensional information of a target scene, and one linear array detector can selectively obtain the spectral information of an interested target;
4. the utility model discloses spectrum appearance structural style is novel, and present conventional processing level realizes easily, and two Amici prisms are arranged in parallel light path, easily the dress and transfer, can use at near ultraviolet, visible light, near-infrared or even mid-wave infrared spectral band, uses extensively.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a hand-held type of prism beam splitting is bore imaging spectrometer altogether, its characterized in that, the spectrum appearance includes leading objective, beam splitter prism, space dimension detector, collimating mirror, two Amici prisms, imaging mirror, linear array detector, wherein:
the front objective lens is positioned at the foremost end of the spectrometer, and the beam splitter prism is positioned on the right side of the front objective lens;
the space dimension detector is arranged above the beam splitter prism, and the collimating mirror is arranged on the right side of the beam splitter prism;
the double Amici prisms are arranged on the right side of the collimating mirror;
the imaging mirror is arranged on the right side of the double Amici prism, and the linear array detector is arranged on the right side of the imaging mirror;
the front objective lens, the beam splitter prism, the collimating lens, the double Amici prism and the imaging lens all share an optical axis.
2. The prism-split handheld common-aperture imaging spectrometer of claim 1,
the double Amicii prism is formed by splicing three triangular prisms, wherein the first triangular prism is made of crown glass with medium dispersion capacity;
the second prism is made of high-dispersion flint glass, is positioned between the first prism and the third prism and is in a symmetrical structure;
the third prism is also made of crown glass with a medium dispersion capacity.
3. The prism-split handheld common-aperture imaging spectrometer of claim 1, wherein the technical specifications of the spectrometer include:
relative aperture 2; the field angle of the space camera is 46 degrees; the field angle of the spectrometer is +/-1 degree; magnification ratio 1: 1; the working wavelength is in the range of 486 nm-900 nm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120912416.6U CN214583656U (en) | 2021-04-29 | 2021-04-29 | Handheld common-caliber imaging spectrometer for prism light splitting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120912416.6U CN214583656U (en) | 2021-04-29 | 2021-04-29 | Handheld common-caliber imaging spectrometer for prism light splitting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023227290A1 (en) * | 2022-05-23 | 2023-11-30 | Consejo Superior De Investigaciones Científicas | Spectral shaper illumination device |
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2021
- 2021-04-29 CN CN202120912416.6U patent/CN214583656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023227290A1 (en) * | 2022-05-23 | 2023-11-30 | Consejo Superior De Investigaciones Científicas | Spectral shaper illumination device |
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