Combined spectrometer based on optical cage system

Abstract

The invention provides a combined spectrometer based on an optical cage system. The combined spectrometer comprises a rotary table, an optical cage system A, an optical cage system B, a three-axis adjusting table, a digital imaging unit, a reticle and an LED light source. The device has the advantages that a fully-open optical cage type system structure is adopted, the positions and functions of all optical elements are clear at a glance, and an object to be measured can be freely placed according to needs and is not limited by a fixing structure; component design is adopted, all components can be assembled independently, the degree of participation in the experiment process is improved, and the basic structure and principle of the spectrometer can be comprehensively understood; the measurement process is fully digitalized, the angle of the rotary table is read by an encoder, the resolution is high, the visual field of a traditional eyepiece is read by an image sensor, and the angle and the image are displayed on a computer screen by matched data acquisition software.

Description

Technical Field

[0001] The invention relates to the technical field of optical instruments, and in particular to a combined spectrometer based on an optical cage system. Background Art

[0002] A spectrometer is an optical instrument that can accurately measure the deflection angle of light. It can be used to measure wavelength, refractive index and dispersion rate of prism materials, etc.

[0003] At present, conventional experimental spectrometers are usually composed of a rotating table, a collimator, a prism table, a telescope, and a dial. Traditional spectrometers are widely used in major domestic universities. They are designed as an integral unit, and each component can be fine-tuned as necessary but cannot be disassembled. The collimator, telescope, and Abbe eyepiece are all closed structures, with a small field of view, and it is difficult to adjust the optical axis coaxially. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a combined spectrometer based on an optical cage system, which can not only realize all the functions of a traditional spectrometer, but also play a certain positive role in experimental teaching and scientific research in colleges and universities.

[0005] The specific plan is as follows: A combined spectrometer based on an optical cage system is characterized by comprising a rotating table, an optical cage system A, an optical cage system B, a three-axis adjustment table, a digital imaging unit, a graticule and an LED light source.

[0006] As a further improvement of the present invention, the turntable is composed of an outer disk and an inner disk having a common central axis, and the outer disk and the inner disk can rotate independently.

[0007] As a further improvement of the present invention, the optical cage system A is connected to the outer disk of the turntable and can rotate with the outer disk; the optical cage system A includes an objective lens, a graticule, an LED light source, and a digital imaging unit installed in sequence, and the digital imaging unit is located at the end of the optical cage system A.

[0008] As a further improvement of the present invention, the digital imaging unit can be replaced with a traditional eyepiece to form a visual system.

[0009] As a further improvement of the present invention, the optical cage system B comprises a lens, a slit plate and a spectrum lamp which are installed in sequence. The spectrum lamp can usually be a mercury lamp or a sodium lamp.

[0010] As a further improvement of the present invention, the optical cage system A is sequentially mounted with a first lens frame adapter, a second lens frame adapter, and a fourth lens frame adapter.

[0011] As a further improvement of the present invention, a third spectacles frame adapter may be provided between the second spectacles frame adapter and the fourth spectacles frame adapter.

[0012] The optical cage system A provides an Abbe autocollimation optical path, wherein the third frame adapter is an auxiliary lens, which is optional and can be used to adjust the imaging magnification. The digital imaging unit is connected to the fourth frame adapter. The digital imaging unit can be replaced with a traditional eyepiece to form a visual system.

[0013] The spacing between the first frame adapter, the second frame adapter, the third frame adapter, and the fourth frame adapter (digital imaging unit) can be adjusted. However, the first frame adapter and the second frame adapter are fixed on two sets of cage system rods. When adjusting the spacing between them, the spacing between the second frame adapter, the third frame adapter, and the fourth frame adapter (digital imaging unit) should be kept unchanged.

[0014] As a further improvement of the present invention, the optical cage system B is sequentially mounted with a fifth lens frame adapter and a sixth lens frame adapter.

[0015] The optical cage system B provides parallel light for the slit where the sixth frame adapter is located. The fifth frame adapter is a frame adapter where the eyepiece is located, the sixth frame adapter is a frame adapter where the slit is located, the distance between the fifth frame adapter and the sixth frame adapter is adjustable, and the sixth frame adapter should be located on the focal plane of the objective lens of the fifth frame adapter.

[0016] As a further improvement of the present invention, the components of the optical cage system (frame adapter, metal rod, mounting ring, etc.) can be disassembled and assembled. Optical cage system A, optical cage system B, and its attached adapters, etc. are all composed of optical cage system components and can be disassembled and assembled.

[0017] As a further improvement of the present invention, the three-axis adjustment platform has three-dimensional adjustment capability, is connected to the inner disk, and is used to place or install prisms, gratings, and other optical elements.

[0018] As a further improvement of the present invention, two angle measuring units are further included. The two angle measuring units are respectively connected to the outer disk and the inner disk of the turntable, and are used to independently record the deflection angles of the inner disk and the outer disk respectively.

[0019] As a further improvement of the present invention, a vernier scale can be included to record the deflection angles of the outer and inner disks of the turntable. A conventional vernier scale also belongs to the category of the angle measurement unit of the present invention, that is, the angle value is obtained by visual reading instead of electronic measurement.

[0020] The beneficial effects of the present invention are: 1. Fully open standard optical cage structure. Experimenters need to fully understand the principles of each part of the spectrometer before they can correctly complete the assembly; the optical path can be clearly presented, which is conducive to experimental teaching.

[0021] 2. Component-based design allows for adding or reducing some components according to scientific research needs.

[0022] 3. The eyepiece image and angle are read out by digital measurement method with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] List of reference numerals: 1. Turntable, 1-1. Outer disk, 1-2. Inner disk, 2. Optical cage system A, 3. Optical cage system B, 4. Three-axis adjustment table, 5. Digital imaging unit, 6. Angle measurement unit, 7-LED light source, 8-spectral light, 9-first mirror frame adapter, 10-second mirror frame adapter, 11-third mirror frame adapter, 12-fourth mirror frame adapter, 13-fifth mirror frame adapter, 14-sixth mirror frame adapter. Implementation

[0025] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] As shown in the figure, the present invention provides a combined spectrometer based on an optical cage system, including a turntable 1, an optical cage system A2, an optical cage system B3, a three-axis adjustment table 4, a digital imaging unit 5, a graticule and an LED light source 7.

[0027] In this embodiment, the turntable 1 is composed of an outer disk 1-1 and an inner disk 1-2 having a common central axis, and the outer disk 1-1 and the inner disk 1-2 can rotate independently.

[0028] In this embodiment, the optical cage system A2 is connected to the outer disk 1-1 of the turntable 1 and can rotate with the outer disk 1-1; the optical cage system A2 includes an objective lens, a graticule, an LED light source 7, and a digital imaging unit 5 installed in sequence, and the digital imaging unit 5 is located at the end of the optical cage system A2.

[0029] In this embodiment, the digital imaging unit 5 can be replaced by a traditional eyepiece to form a visual system.

[0030] In this embodiment, the optical cage system B (3) comprises a lens, a slit plate and a spectrum lamp 8 which are installed in sequence. The spectrum lamp 8 can generally be a mercury lamp or a sodium lamp.

[0031] In this embodiment, a first lens frame adapter 9, a second lens frame adapter 10 and a fourth lens frame adapter 12 are sequentially mounted on the optical cage system A (2).

[0032] In this embodiment, a third spectacles frame adapter 11 may be further provided between the second spectacles frame adapter 10 and the fourth spectacles frame adapter 12 .

[0033] The optical cage system A provides an Abbe autocollimation optical path, wherein the third frame adapter is an auxiliary lens, which is optional and can be used to adjust the imaging magnification. The digital imaging unit is connected to the fourth frame adapter. The digital imaging unit can be replaced with a traditional eyepiece to form a visual system.

[0034] The spacing between the digital imaging units of the first frame adapter, the second frame adapter, the third frame adapter, and the fourth frame adapter can be adjusted. However, the first frame adapter and the second frame adapter are fixed on two sets of cage system rods, and when adjusting the spacing between them, the spacing between the digital imaging units of the second frame adapter, the third frame adapter, and the fourth frame adapter should be kept unchanged.

[0035] In this embodiment, a fifth lens frame adapter 13 and a sixth lens frame adapter 14 are sequentially mounted on the optical cage system B3.

[0036] The optical cage system B provides parallel light for the slit where the sixth frame adapter is located. The fifth frame adapter is a frame adapter where the eyepiece is located, the sixth frame adapter is a frame adapter where the slit is located, the distance between the fifth frame adapter and the sixth frame adapter is adjustable, and the sixth frame adapter should be located on the focal plane of the objective lens of the fifth frame adapter.

[0037] In this embodiment, the components of the optical cage system, such as the frame adapter, metal rod, and mounting ring, can be disassembled and assembled. The optical cage system A, the optical cage system B, and its attached adapters, etc. are all composed of optical cage system components and can be disassembled and assembled.

[0038] In this embodiment, the three-axis adjustment table 4 has three-dimensional adjustment capability, is connected to the inner disk 1-2, and is used to place or install prisms, gratings, and other optical elements.

[0039] In this embodiment, two angle measuring units 6 are further included. The two angle measuring units 6 are respectively connected to the outer disk 1-1 and the inner disk 1-2 of the turntable 1, and are used to independently record the deflection angles of the inner disk 1-2 and the outer disk 1-1.

[0040] In this embodiment, a vernier scale is also included to record the deflection angles of the outer disk 1-1 and the inner disk 1-2 of the turntable 1. A conventional vernier scale also belongs to the category of the angle measurement unit of the present invention, that is, the angle value is obtained by visual reading instead of electronic measurement.

[0041] The present invention adopts a fully open optical cage system structure, and the position and function of each optical element are clear at a glance. It adopts a modular design, and all components can be assembled independently, which increases the participation of the experimental process and helps to fully understand the basic structure and principle of the spectrometer. The measurement process is fully digital, and the turntable angle is read out by an encoder with high resolution; the traditional eyepiece field of view is read out by an image sensor; the angle and image are displayed on the computer screen by the supporting data acquisition software.

[0042] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A combined spectrometer based on an optical cage system, characterized in that: The invention comprises a turntable (1), an optical cage system A (2), an optical cage system B (3), a three-axis adjustment table (4), a digital imaging unit (5), a graticule and an LED light source (7), wherein the turntable (1) is composed of an outer disk (1-1) and an inner disk (1-2) having a common central axis, and the outer disk (1-1) and the inner disk (1-2) can rotate independently.

2. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: The optical cage system A (2) is connected to an outer disk (1-1) of a turntable (1) and can rotate together with the outer disk (1-1); the optical cage system A (2) comprises an objective lens, a graticule, an LED light source (7), and a digital imaging unit (5) which are installed in sequence, and the digital imaging unit (5) is located at the end of the optical cage system A (2).

3. The combined spectrometer based on the optical cage system according to claim 2, characterized in that: The digital imaging unit (5) is an eyepiece.

4. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: The optical cage system B (3) comprises a lens, a slit plate and a spectrum lamp (8) which are installed in sequence.

5. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: The optical cage system A (2) is sequentially mounted with a first mirror frame adapter (9), a second mirror frame adapter (10) and a fourth mirror frame adapter (12).

6. The combined spectrometer based on the optical cage system according to claim 5, characterized in that: A third spectacles frame adapter (11) is further provided between the second spectacles frame adapter (10) and the fourth spectacles frame adapter (12).

7. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: The optical cage system B (3) is sequentially mounted with a fifth mirror frame adapter (13) and a sixth mirror frame adapter (14).

8. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: The three-axis adjustment platform (4) has a three-dimensional adjustment capability and is connected to the inner disk (1-2), with the optical element to be measured placed or installed on it.

9. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: It also includes two angle measurement units (6), which are respectively connected to the outer disk (1-1) and the inner disk (1-2) of the turntable (1) and are used to independently record the deflection angles of the inner disk (1-2) and the outer disk (1-1).

10. The combined spectrometer based on the optical cage system according to claim 1, characterized in that: It also includes a vernier scale disk capable of recording the respective deflection angles of the outer disk (1-1) and the inner disk (1-2) of the turntable (1).

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