Spectrometer with adjustable diaphragm optical fiber lens

Abstract

The utility model discloses a spectrograph with an adjustable diaphragm optical fiber lens, which comprises an adjustable diaphragm independent lens and a spectrograph host, the adjustable diaphragm independent lens and the spectrograph host form light path connection through an outer optical fiber, and the adjustable diaphragm independent lens and the spectrograph host form electrical connection through a communication cable; the adjustable diaphragm independent lens comprises an industrial lens, the rear end of the industrial lens is connected with a small-hole reflector, the small-hole reflector divides an image formed by the industrial lens into two paths, one path passes through the small-hole reflector and then is transmitted to the spectrometer host through an outer optical fiber, and the other path is focused to the area-array camera; through the arrangement of the adjustable diaphragm independent lens, the adjustment of different diaphragms is realized, the measurement of products with different sizes is satisfied, the application range and the use flexibility are improved, and the visualization of the measurement can be realized through the area-array camera.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a spectrometer with an adjustable diaphragm optical fiber lens. Background Art

[0002] A spectrometer is a device that uses light detectors such as photomultiplier tubes to measure the brightness of spectral lines at different wavelengths and outputs corresponding spectral data.

[0003] In the existing technology, there are more and more demands for display screen measurement. For example, for products of different sizes, corresponding spectrometers are needed to perform spectral measurement and analysis to obtain effective spectral data. Different spectrometers are usually required, which has poor flexibility in actual production. For another example, the existing measurement cannot be presented intuitively, and the user experience is low. In addition, the existing spectrometer cannot be applied to flicker testing and spectral testing at the same time. Utility Model Content

[0004] To solve the above problems, the present application provides a spectrometer with a rational structure and an adjustable aperture fiber lens, so as to realize the adjustment of different apertures, meet the measurement of products of different sizes, improve the application scope and flexibility of use, and realize the visualization of measurement through an area array camera.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A spectrometer with an adjustable aperture fiber lens, comprising an independent lens with an adjustable aperture and a spectrometer host, wherein the independent lens with an adjustable aperture and the spectrometer host are optically connected via an external optical fiber, and the independent lens with an adjustable aperture and the spectrometer host are electrically connected via a communication cable;

[0007] The adjustable aperture independent lens includes an industrial lens, and a pinhole reflector is arranged at the rear end of the industrial lens. The pinhole reflector divides the image formed by the industrial lens into two paths, one path passes through the pinhole reflector and is transmitted to the spectrometer host through an external optical fiber, and the other path is focused to the area array camera.

[0008] As a further improvement of the above technical solution:

[0009] An optical reflector is arranged between the pinhole reflector and the area array camera. The image formed by the industrial lens is reflected by the pinhole reflector and the optical reflector in sequence and then focused into the area array camera.

[0010] The adjustable aperture independent lens also includes a shell body, an optical reflector is arranged and installed at a corner of the shell body, and an output end of the area array camera forms an interface on a wall surface on one side of the shell body for easy external connection.

[0011] The outer optical fiber is vertically inserted on one side of the shell through a connector, and the inner end of the outer optical fiber is clamped and fixed on the shell through a clamping piece.

[0012] The pinhole reflector is installed at the output end of the motor. A plurality of pinhole reflectors are arranged on the same circumference of the pinhole reflector with the rotating shaft as the center. The diameters of the pinhole reflectors gradually increase or decrease along the circumferential arrangement direction.

[0013] The axial direction of the industrial lens, the axial direction of the pinhole on the pinhole reflector, and the axial direction of the external optical fiber input end are located on the same straight line.

[0014] A collimator is arranged between the pinhole reflector and the input end of the external optical fiber.

[0015] The spectrometer host includes a diode switching mechanism connected to the end of the outer optical fiber, and the diode switching mechanism is connected to the spectrometer via the inner optical fiber; the diode switching mechanism switches the image transmitted by the outer optical fiber between the diode and the spectrometer to perform flicker measurement or spectrum measurement.

[0016] The diode switching mechanism includes a base, a slider is slidably mounted on the base, and two sliding positions, position one and position two, are arranged on the slider. The end of the outer optical fiber is directly connected with the inner optical fiber via position one, and the end of the outer optical fiber is connected with the photodiode via position two.

[0017] The spectrometer host also includes a second shell, in which the diode switching mechanism, the inner optical fiber and the spectrometer are arranged; a control mainboard is also arranged in the second shell, and the control mainboard is electrically connected to the diode switching mechanism and the spectrometer.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model has a compact structure and is easy to use. By setting an independent lens for an adjustable diaphragm, the adjustment of different diaphragms can be achieved, which satisfies the measurement of products of different sizes, improves the application scope and flexibility of use, and can realize measurement visualization through an area array camera, effectively improving the user experience.

[0020] The utility model also has the following advantages:

[0021] By setting the diode switching mechanism, the photodiode and the spectrometer can be switched for use, thereby realizing the switching selection of flicker test or spectrum test, which can quickly meet different measurement needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 The figure is a schematic diagram of the internal structure of the independent lens with adjustable aperture of the utility model.

[0024] Figure 3The utility model is a schematic diagram of installing the pinhole reflector on the motor.

[0025] Figure 4 The figure is a schematic diagram of the internal structure of the mainframe of the spectrometer of the utility model.

[0026] Figure 5 It is a structural schematic diagram of the diode switching mechanism of the utility model.

[0027] Among them: 1. Independent lens with adjustable aperture; 2. External optical fiber; 3. Communication cable; 4. Spectrometer host;

[0028] 10. Shell 1; 11. Industrial lens; 12. Optical reflector; 13. Area array camera; 14. Pinhole reflector; 15. Motor; 16. Collimator; 17. Clamp; 141. Pinhole;

[0029] 40. Shell 2; 41. Diode switching mechanism; 42. Internal optical fiber; 43. Control main board; 44. Heat sink; 45. Spectrometer; 411. Slider; 412. Base; 4111. Position 1; 4112. Position 2. DETAILED DESCRIPTION

[0030] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, the spectrometer with an adjustable aperture fiber lens of this embodiment includes an independent lens 1 with an adjustable aperture and a spectrometer host 4. The independent lens 1 with an adjustable aperture and the spectrometer host 4 are connected in an optical path via an external optical fiber 2. The independent lens 1 with an adjustable aperture and the spectrometer host 4 are electrically connected via a communication cable 3.

[0032] like Figure 2 As shown, the adjustable aperture independent lens 1 includes an industrial lens 11, and a pinhole reflector 14 is arranged at the rear end of the industrial lens 11. The pinhole reflector 14 divides the image formed by the industrial lens 11 into two paths, one path passes through the pinhole reflector 14 and is transmitted to the spectrometer host 4 via the external optical fiber 2, and the other path is focused to the area array camera 13.

[0033] In this embodiment, the adjustable aperture independent lens 1 can be provided to adjust different apertures to meet the measurement of products of different sizes; and the measurement can be visualized through the area array camera 13.

[0034] In this embodiment, an area array camera 13 is installed inside the independent lens 1 with an adjustable aperture, which not only makes the measurement visualized, but also helps to select and align the measured area more accurately.

[0035] An optical reflector 12 is arranged between the pinhole reflector 14 and the area array camera 13. The image formed by the industrial lens 11 is reflected by the pinhole reflector 14 and the optical reflector 12 in sequence and then focused into the area array camera 13, thereby effectively realizing visualization of measurement.

[0036] The adjustable aperture independent lens 1 also includes a shell 10, an optical reflector 12 is arranged and installed at the corner of the shell 10, and the output end of the area array camera 13 forms an interface convenient for external connection on the side wall of the shell 10; the overall layout is compact, reasonable and ingenious.

[0037] In this embodiment, the structural support of the independent lens 1 with adjustable aperture can be realized through the housing 10, which helps to realize modularization.

[0038] The external optical fiber 2 is vertically inserted into the side surface of the housing 10 via a connector, and the inner end of the external optical fiber 2 is clamped and fixed to the housing 10 via a clamp 17; this effectively ensures the installation reliability of the external optical fiber 2 on the adjustable aperture independent lens 1, and effectively ensures the transmission reliability to the external optical fiber 2 after passing through the pinhole reflector 14.

[0039] like Figure 3 As shown, the pinhole reflector 14 is installed at the output end of the motor 15. A plurality of small holes 141 are spaced apart on the same circumference of the pinhole reflector 14 with the rotating axis as the center. The diameters of the plurality of small holes 141 gradually increase or decrease along the circumferential arrangement direction.

[0040] In this embodiment, the operation of the motor 15 realizes automatic and independent adjustment of the pinhole reflector 14, and realizes automatic adjustment of multiple different apertures, thereby being able to meet the measurement needs of all sizes of products from micro displays to ultra-large display screens currently on the market, thereby increasing the application range of the instrument and improving its flexibility of use.

[0041] In this embodiment, the number of small holes 141 and the diameter of each small hole 141 can be set according to actual use requirements. For example, five small holes 141 with gradually increasing sizes are set to match the five viewing angle options of 0.1°, 0.2°, 0.5°, 1° and 2°; in actual use, the motor 15 controls the arbitrary switching of the five viewing angles, so that the entire measurement process is more automated and the measurement is more efficient.

[0042] The axial direction of the industrial lens 11, the axial direction of the pinhole 141 on the pinhole reflector 14, and the axial direction of the input end of the external optical fiber 2 are located on the same straight line; thus, the image formed by the industrial lens 11 can be focused on the light entrance of the external optical fiber 2 through the selected pinhole 141 on the pinhole reflector 14, and then transmitted to the spectrometer host 4 through the external optical fiber 2.

[0043] In this embodiment, the industrial lens 11 can select an existing standard product - an automatic aperture adjustment lens, which has the function of automatic focusing and aperture adjustment; the automatic aperture adjustment lens is completely independent, which is convenient for optical testing of the product in various special environments, and can effectively avoid the main optical components being affected by environmental interference and affecting the test results.

[0044] A collimator 16 is arranged between the pinhole reflector 14 and the input end of the external optical fiber 2 to effectively ensure focusing toward the entrance of the external optical fiber 2 .

[0045] like Figure 4 As shown, the spectrometer host 4 includes a diode switching mechanism 41 connected to the end of the outer optical fiber 2, and the diode switching mechanism 41 is connected to the spectrometer 45 via the inner optical fiber 42; the diode switching mechanism 41 switches the image transmitted by the outer optical fiber 2 between the diode and the spectrometer 45 to perform flicker measurement or spectral measurement.

[0046] In this embodiment, the diode may be a photodiode. By installing a photodiode inside the spectrometer host 4 to achieve flicker measurement (Flicker test) of the product, the design is ingenious and effectively enriches the test function of the instrument.

[0047] In this embodiment, by setting the diode switching mechanism 41, it is possible to switch between the photodiode and the spectrometer 45, thereby realizing the switching selection of the flicker test or the spectrum test, which can quickly meet different measurement requirements.

[0048] like Figure 5 As shown, the diode switching mechanism 41 includes a base 412, on which a slider 411 is slidably mounted, and the slider 411 is provided with two sliding positions, position one 4111 and position two 4112. The end of the outer optical fiber 2 is directly connected to the inner optical fiber 42 via position one 4111, and the end of the outer optical fiber 2 is connected to the photodiode via position two 4112.

[0049] In this embodiment, the slider 411 can be driven by a linear drive power including but not limited to a pneumatic cylinder, an electric cylinder, etc. to move up and down relative to the base 412 to achieve adjustment between position one 4111 and position two 4112.

[0050] The slider 411 in this embodiment can also be equipped with an existing standard electric slide to achieve movement, and the electric slide can be used to achieve free and fast switching between the two measurements, which effectively helps to improve the overall integration and the overall use value.

[0051] The spectrometer host 4 also includes a shell 2 40 , in which a diode switching mechanism 41 , an inner optical fiber 42 , and a spectrometer 45 are all arranged; a control mainboard 43 is also arranged in the shell 2 40 , and the control mainboard 43 is electrically connected to the diode switching mechanism 41 and the spectrometer 45 .

[0052] In this embodiment, the structural support of the spectrometer host 4 can be achieved through the second housing 40, which helps to achieve modularization.

[0053] The inner optical fiber 42 located in the second shell 40 can be fixed relative to the inner wall surface of the second shell 40 by using cable fixers arranged at intervals according to the actual length.

[0054] In this embodiment, conventional components such as batteries can be arranged in an orderly manner in the shell 2 40 of the spectrometer host 4 according to actual use requirements, and heat dissipation measures can also be set according to use requirements, such as installing heat dissipation components 44 such as fans on the side walls of the shell 2 40.

[0055] The spectrometer 45 in this embodiment is a cooling type spectrometer. The spectrometer 45 is installed inside the spectrometer host 4 to measure the spectral data of the product under test. The measurement range can be from extremely low brightness to extremely high brightness, such as 0.0005 to 24000000 cd / m 2 .

[0056] In the utility model, a very high-resolution CCD electronic lens can be used as the industrial lens 11, a high-sensitivity photodiode can be selected as the diode, a multi-mode quartz optical fiber can be selected as the outer optical fiber 2 and the inner optical fiber 42, and a high-precision spectrometer can be selected as the spectrometer 45. In combination with an optical reflector 12, an array camera 13, an aperture adjustment mechanism, etc., the brightness value, chromaticity value and Flicker value in the luminous area can be collected and measured at high speed.

[0057] In actual use, the image formed by the industrial lens 11 can be focused on the light entrance of the external optical fiber 2 through the selected small hole 141 on the small hole reflector 14, and transmitted by the external optical fiber 2 to the photodiode in the spectrometer host 4 to realize Flicker measurement, or transmitted to the spectrometer host 4 and then transmitted by the internal optical fiber 42 to the cooling type spectrometer 45 for spectral measurement; in addition, the image formed by the industrial lens 11 is focused to the area array camera 13 through the optical reflector 12 while passing through the selected small hole 141 on the small hole reflector 14, so that the test area can be visualized, which is convenient for users to clearly understand the tested position information.

[0058] The utility model is simple to operate, meets the measurement requirements of products of different sizes, improves the scope of application and flexibility of use, and can realize measurement visualization through an area array camera, effectively improving the user experience.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A spectrometer with an adjustable aperture fiber lens, characterized in that: The invention comprises an independent lens with an adjustable aperture (1) and a spectrometer mainframe (4), wherein the independent lens with an adjustable aperture (1) and the spectrometer mainframe (4) are connected in an optical path via an external optical fiber (2), and the independent lens with an adjustable aperture (1) and the spectrometer mainframe (4) are electrically connected via a communication cable (3); The adjustable aperture independent lens (1) comprises an industrial lens (11), and a pinhole reflector (14) is arranged at the rear end of the industrial lens (11). The pinhole reflector (14) divides the image formed by the industrial lens (11) into two paths, one path passes through the pinhole reflector (14) and is then transmitted to a spectrometer host (4) via an external optical fiber (2), and the other path is focused to a surface array camera (13).

2. The spectrometer with an adjustable aperture fiber lens as claimed in claim 1, characterized in that: An optical reflector (12) is arranged between the pinhole reflector (14) and the area array camera (13); an image formed by the industrial lens (11) is sequentially reflected by the pinhole reflector (14) and the optical reflector (12) and then focused into the area array camera (13).

3. The spectrometer with an adjustable aperture fiber lens as claimed in claim 2, characterized in that: The adjustable aperture independent lens (1) also includes a housing (10), an optical reflector (12) is arranged and installed at a corner of the housing (10), and an output end of the area array camera (13) forms an interface on the side wall of the housing (10) for easy external connection.

4. The spectrometer with an adjustable aperture fiber lens as claimed in claim 3, characterized in that: The outer optical fiber (2) is vertically inserted into the side surface of the housing (10) via a connector, and the inner end of the outer optical fiber (2) is clamped and fixed on the housing (10) via a clamping member (17).

5. The spectrometer with an adjustable aperture fiber lens as claimed in claim 1, characterized in that: The pinhole reflector (14) is mounted on the output end of the motor (15), and a plurality of pinholes (141) are spaced apart on the same circumference of the pinhole reflector (14) with the rotation axis as the center, and the diameters of the plurality of pinholes (141) gradually increase or decrease along the circumferential arrangement direction.

6. The spectrometer with an adjustable aperture fiber lens as claimed in claim 1, 4 or 5, characterized in that: The axial direction of the industrial lens (11), the axial direction of the small hole (141) on the small hole reflector (14), and the axial direction of the input end of the external optical fiber (2) are located on the same straight line.

7. The spectrometer with an adjustable aperture fiber lens as claimed in claim 1, characterized in that: A collimator (16) is arranged between the pinhole reflector (14) and the input end of the external optical fiber (2).

8. The spectrometer with an adjustable aperture fiber lens as claimed in claim 1, characterized in that: The spectrometer host (4) includes a diode switching mechanism (41) connected to the end of the outer optical fiber (2), and the diode switching mechanism (41) is connected to the spectrometer (45) via the inner optical fiber (42); the diode switching mechanism (41) switches the image transmitted by the outer optical fiber (2) between the diode and the spectrometer (45) to perform flicker measurement or spectrum measurement.

9. The spectrometer with an adjustable aperture fiber lens as claimed in claim 8, characterized in that: The diode switching mechanism (41) comprises a base (412), a slider (411) is slidably mounted on the base (412), and two sliding positions, position one (4111) and position two (4112), are provided on the slider (411), the end of the outer optical fiber (2) is directly connected to the inner optical fiber (42) via position one (4111), and the end of the outer optical fiber (2) is connected to the photodiode via position two (4112).

10. The spectrometer with an adjustable aperture fiber lens as claimed in claim 8, characterized in that: The spectrometer host (4) further comprises a second housing (40), wherein the diode switching mechanism (41), the inner optical fiber (42), and the spectrometer (45) are all arranged in the second housing (40); a control mainboard (43) is also arranged in the second housing (40), and the control mainboard (43) is electrically connected to the diode switching mechanism (41) and the spectrometer (45).

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