A standard lamp for light source intensity and its uses

Abstract

The present invention discloses a light source intensity standard lamp and its uses. The light source intensity standard lamp includes a light-emitting component, a positioning component, and a heat dissipation component; wherein, the light-emitting component includes a lamp holder, a light bulb disposed on the lamp holder, and an outer wall, and the outer wall is disposed outside the light bulb and the lamp holder for protecting the light bulb and the lamp holder; the outer wall can enter into a cuvette holder in a spectral measurement device; the positioning component is disposed on the side surface of the outer wall, and the positioning component can move up and down along the side surface of the outer wall; the size of a positioning frame in the positioning component is larger than the size of the cuvette holder for positioning the position of the light bulb in the cuvette holder. The outer wall size of the standard lamp is equivalent to the outer size of the cuvette, and the positioning of the light bulb can be achieved by aligning the positioning component with the cuvette holder. It is equivalent to a light source intensity standard lamp of a blackbody radiation source and can stably output spectral energy in a wide spectral band range (350 - 3000 nm).

Description

Technical Field

[0001] The present invention relates to the field of optical detection, and relates to a light source intensity standard lamp and its use, and more specifically relates to a color temperature definable volume radiation light source intensity standard lamp and its use. Background Art

[0002] A light source can emit electromagnetic radiation of various wavelengths, such as infrared rays, visible light, ultraviolet rays, and even high-energy cosmic rays and other long-wave electromagnetic radiation. An ideal blackbody radiation light source only absorbs any incoming radiation without reflection, and at the same time radiates to the outside in the forms of light and heat. Some artificial light sources can achieve radiation equivalent to that of a blackbody radiation light source within a certain color temperature range. Using an artificial light source to simulate a blackbody radiation light source can be applied to the intensity correction of a spectral measurement device.

[0003] Currently used standard light sources include deuterium lamp standard light sources, xenon lamp standard light sources, plasma standard light sources, and tungsten halogen lamp standard light sources, etc. The standard spectra of deuterium lamp standard light sources, xenon lamp standard light sources, and plasma standard light sources are all sharp line spectra or partially sharp line spectra, while the standard spectrum of a standard tungsten halogen lamp is a blackbody radiation spectrum and is smooth. The latter is more suitable for spectral intensity calibration compared to the former three.

[0004] Patent CN205655265U discloses a halogen lamp standard light source, which uses a tungsten halogen lamp bulb combined with optical fiber light guiding to calibrate a spectrometer, and dissipates heat through a heat dissipation lamp body and an air duct on the lamp body, and can homogenize light. However, since the light emitted by it will change after being refracted and reflected by the optical fiber, there is a large difference from the standard spectrum, and it is difficult to calibrate the spectral intensity after entering the spectral detection device. Summary of the Invention

[0005] The present invention provides a light source intensity standard lamp, and the light source intensity standard lamp includes a light emitting component, a positioning component, and a heat dissipation component;

[0006] Among them, the light emitting component includes a lamp holder, a bulb and an outer wall arranged on the lamp holder. The outer wall is arranged outside the bulb and the lamp holder and is used to protect the bulb and the lamp holder; the outer wall can enter a cuvette holder in a spectral measurement device;

[0007] The positioning component is arranged on the side surface of the outer wall, and the positioning component can move up and down along the side surface of the outer wall; the positioning component includes a positioning frame, and the size of the positioning frame is larger than the size of the cuvette holder, and is used to position the position of the bulb in the cuvette holder.

[0008] According to the technical solution of the present invention, the shape of the outer wall can be a cuboid, a cylinder or other shapes, and preferably a cuboid.

[0009] According to the exemplary technical solution of the present invention, the size and shape of the outer wall are matched with the size and shape of the positioning frame, so that the positioning frame can move on the side surface of the outer wall. For example, the size of the outer wall can be equivalent to the outer dimension of the cuvette. For example, the size is the same as that of a 10 mm cuvette.

[0010] According to the technical solution of the present invention, a light passing hole is provided on the side surface of the outer wall to allow the light of the bulb to pass through and irradiate the spectral measurement device. Preferably, the shape of the light passing hole is a round hole.

[0011] According to the technical solution of the present invention, the structure of the positioning frame is not limited. For example, it can be an integral closed positioning frame, an integral non-closed positioning frame or a combined positioning frame. Further, the positioning component may further include a fixing member that can fix the positioning frame to the side surface of the outer wall, such as a screw, a positioning pin or a buckle. For another example, the positioning component may further include a locking member that cooperates with the fixing member, such as a nut that cooperates with a screw.

[0012] When the positioning frame is an integral closed positioning frame, the positioning component may further include a screw. A threaded hole that cooperates with the screw is provided on the side surface of the positioning frame. By screwing the screw in and out, the fixing and movement of the positioning frame on the outer wall surface are controlled. When the screw is screwed in and abuts against the side surface of the outer wall, the positioning frame can be fixed to the side surface of the outer wall. And since the size of the positioning frame is larger than the size of the cuvette holder, the surface of the end of the positioning frame close to the cuvette holder contacts the upper part of the cuvette holder, which can ensure that the outer wall is inside the cuvette holder and does not fall off. At this time, the position of the bulb is also fixed accordingly. When the screw is screwed out, the positioning frame can move along the side surface of the outer wall. When the positioning frame moves to a position where the bulb is in a suitable position after positioning, the screw can be tightened. Preferably, when the screw abuts against the side surface of the outer wall, the position of the light passing hole should be avoided.

[0013] When the positioning frame is an integral non-closed positioning frame, the non-closed area is less than or equal to 1 / 4 of the perimeter of the positioning frame, and the non-closed end extends out of the fixed end, and through holes are provided at each fixed end. Further, the positioning component may further include a screw that cooperates with the through hole and a nut that cooperates with the screw. By passing the screw through the through hole and screwing the nut into the screw, the fixing of the positioning frame on the side surface of the outer wall can be achieved.

[0014] Among them, the "closed" in the above "integral closed positioning frame" and "integral non-closed positioning frame" means that the circumferential head and tail of the positioning frame are connected and in a closed state.

[0015] When the positioning frame is a combined positioning frame, for example, it can be composed of two identical half frames. The end of each half frame can extend a fixed end, and through holes are provided on each fixed end. Further, the positioning component can also include screws that cooperate with the through holes and nuts that cooperate with the screws. By passing the screws through the through holes to combine the half frames and screwing the nuts into the screws, the positioning frame can be fixed on the outer wall side surface.

[0016] According to the technical solution of the present invention, the material of the positioning frame is not limited and can be a rigid material or an elastic material.

[0017] According to the technical solution of the present invention, the bulb is a tungsten halogen bulb. This bulb has a flat response in a wide spectral range (350 - 3000 nm). By setting a constant current supply current, its color temperature can be ensured to be 2800 - 2900 K, such as 2856 K.

[0018] According to the technical solution of the present invention, the heat dissipation component includes a fan base and a fan located on the fan base.

[0019] According to the technical solution of the present invention, the standard lamp further includes a lampshade, and the lampshade is arranged outside the fan. Further, ventilation holes are provided on the lampshade, and the positions of the ventilation holes are directly opposite to the fan, facilitating heat dissipation.

[0020] Further, the light source intensity standard lamp can also include a power supply connector, and the power supply connector is arranged outside the lampshade and is used to connect to an external power supply to supply power to the light intensity standard lamp. For example, the number of the power supply connectors can be set to two. The first power supply connector is electrically connected to the fan to independently control the operation of the fan; the second power supply connector is electrically connected to the bulb to independently control the on and off of the bulb.

[0021] According to the technical solution of the present invention, the spectral measurement device can be an optical fiber spectrometer or an emission spectrometer, etc. Among them, the optical fiber spectrometer can be an infrared optical fiber spectrometer, an ultraviolet optical fiber spectrometer or a fluorescence optical fiber spectrometer, etc.

[0022] According to the technical solution of the present invention, the light source intensity standard lamp can also include an adapter cylinder, an optical fiber adapter, and an optical fiber connector. The adapter cylinder is located outside the bulb and surrounds the bulb. The optical fiber adapter is located outside the adapter cylinder and surrounds the adapter cylinder. The optical fiber connector is assembled on the through hole on the outer surface of the adapter cylinder. The light emitted from the bulb enters the optical fiber through the through hole via the optical fiber connector and irradiates the sample. Among them, the size of the adapter cylinder is smaller than the size of the outer wall.

[0023] Furthermore, the present invention also provides the application of the light source intensity standard lamp in a spectral measurement device. For example, the application of the light source intensity standard lamp in the calibration of a spectral measurement device, that is, it can be used as a spatial light intensity calibration light source. Also, the light source intensity standard lamp can be used as a light source in a spectral measurement device.

[0024] Advantages of the present invention:

[0025] 1. The present invention provides a light source intensity standard lamp that radiates an intensity equivalent to that of a blackbody radiation light source within a certain color temperature range (2800 - 2900K), and this standard lamp can stably output spectral energy within a wide spectral band range (350 - 3000nm).

[0026] 2. The light source intensity standard lamp provided by the present invention uses air-cooled heat dissipation, and the stable working time can reach 2000 hours.

[0027] 3. The outer wall size of the device in the present invention is equivalent to the outer size of a cuvette. By aligning with the positioning component to the cuvette holder, the positioning of the bulb can be achieved; it is very convenient to install and calibrate on various spectrometers. This light source intensity standard lamp can be used as a spatial light intensity calibration light source in the calibration of a spectral measurement device, and can also be used as a light source in a spectral measurement device. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the light source intensity standard lamp in Example 1 (with an adapter cylinder, an optical fiber adapter, and an optical fiber connector).

[0029] Figure 2 It is a cross-sectional view of the structure of the light source intensity standard lamp in Example 1 (with an adapter cylinder, an optical fiber adapter, and an optical fiber connector).

[0030] Figure 3 It is a cross-sectional view of the structure of the light source intensity standard lamp in Example 2 (removing the adapter cylinder, the optical fiber adapter, and the optical fiber connector).

[0031] Figure 4 It is a practical application scenario diagram of the light source intensity standard lamp in Example 2 (as a spatial light intensity calibration light source).

[0032] Figure 5 It is a practical application scenario diagram of the light source intensity standard lamp in Example 1 (as a light source).

[0033] Figure 6 It is a circuit diagram of the light source intensity standard lamp in Example 1.

[0034] Reference numerals: 1 is an optical fiber connector, 2 is a tungsten halogen lamp, 3 is an optical fiber adapter, 4 is an outer wall, 5 is a positioning frame, 6 is a fan base, 7 is a fan, 8a is a first power connector, 8b is a second power connector, 9 is a lamp cover, 10 is a transfer cylinder, 11 is a lamp holder, 12 is a screw hole, 13 is a light passing hole, 14 is an excitation spectrometer, 15 is a lens, 16 is a light source intensity standard lamp, 17 is an emission spectrometer, 18 is an optical platform, 19 is a sample chamber, 20 is a liquid sample stage, 21 is an optical fiber, 22 is an optical fiber spectrometer. Detailed implementation manners

[0035] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only for illustrative and explanatory purposes of the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies implemented based on the above content of the present invention are covered within the scope of protection intended by the present invention.

[0036] Embodiment 1

[0037] As Figure 1 - Figure 2 shown, the light source intensity standard lamp includes a light emitting component, a positioning component and a heat dissipation component;

[0038] Among them, the light emitting component includes a lamp holder 11, a tungsten halogen lamp 2 arranged on the lamp holder 11, and an outer wall 4. The outer wall 4 is arranged outside the tungsten halogen lamp 2 and the lamp holder 11 for protecting the tungsten halogen lamp and the lamp holder; the outer wall 4 can enter the cuvette holder in the spectrometer;

[0039] The positioning component is arranged on the side surface of the outer wall 4, and the positioning component can move up and down along the side surface of the outer wall.

[0040] The positioning component includes a positioning frame 5. The structure of the positioning frame 5 is an integral closed positioning frame. The size of the positioning frame 5 is larger than the size of the cuvette holder, and is used to position the position of the tungsten halogen lamp in the cuvette holder.

[0041] The shape and size of the positioning frame 5 match those of the outer wall 4, and both are cuboids. Among them, the size of the outer wall is the same as that of a 10-mm cuvette. A light passing hole 13 is arranged on the side surface of the outer wall to allow the light of the lamp to pass through and irradiate the sample in the spectrometer.

[0042] A screw hole 12 is provided on the side surface of the positioning frame 5. The positioning component includes a screw that cooperates with the screw hole 12. By screwing the screw in and out, the fixing and movement of the positioning frame 5 on the side surface of the outer wall are controlled. When the screw is screwed in and abuts against the side surface of the outer wall, the positioning frame can be fixed on the side surface of the outer wall. Since the size of the positioning frame is larger than that of the cuvette holder, the bottom of the positioning frame contacts the upper part of the cuvette holder, which can ensure that the outer wall is within the cuvette holder and does not fall off. At this time, the position of the light bulb is also fixed accordingly. When the screw is screwed out, the positioning frame can move along the side surface of the outer wall. When the positioning frame moves to a position where the light bulb is in a suitable position after positioning, the screw can be tightened. When the screw abuts against the side surface of the outer wall, the position of the light-transmitting hole should be avoided.

[0043] Among them, the heat dissipation component includes a fan base 6, a fan 7 located on the fan base, and a lamp shade 9. The lamp shade 9 is arranged outside the fan 7, and ventilation holes are provided on the lamp shade 9. The positions of the ventilation holes are directly opposite to the fan, facilitating heat dissipation.

[0044] The light source intensity standard lamp further includes a power supply connector, which is arranged outside the lamp shade 9 and is used to connect to an external power supply to supply power to the light intensity standard lamp. As Figure 6 shown, the power supply connector includes a first power supply connector 8a and a second power supply connector 8b. The first power supply connector 8a is electrically connected to the fan 7 to independently control the operation of the fan; the second power supply connector 8b is electrically connected to the tungsten halogen lamp 2 to independently control the on and off of the lamp.

[0045] The light source intensity standard lamp in this embodiment is used as a light source in a spectrometer. As Figure 5 shown, it further includes components connected to the spectrometer: an adapter cylinder 10, an optical fiber adapter 3, and an optical fiber connector 1. The adapter cylinder 10 is located outside the tungsten halogen lamp 2 and surrounds the tungsten halogen lamp. The optical fiber adapter 3 is located outside the adapter cylinder 10 and surrounds the adapter cylinder 10. The optical fiber connector 1 is assembled on the through hole on the outer surface of the adapter cylinder 10. The light emitted from the tungsten halogen lamp passes through the through hole, enters the optical fiber through the optical fiber connector, and irradiates the sample. Among them, the size of the adapter cylinder is smaller than that of the outer wall. After installing the adapter cylinder 10, the optical fiber adapter 3, and the optical fiber connector 1, an optical fiber 21 is connected to the optical fiber connector 1 and an optical fiber spectrometer 22 is connected to the other end of the optical fiber. The light emitted by the tungsten halogen lamp 2 enters the optical fiber spectrometer 22 after being refracted and reflected by the optical fiber 21. Due to the refraction and reflection, the distribution of the light intensity with respect to the wavelength changes. At this time, the emitted light of the light source intensity standard lamp is different from the standard blackbody radiation after entering the spectrometer and cannot be used as a calibration light source.

[0046] This standard lamp can have a flat response in a wide spectral band range (350 - 3000 nm), and the spectral energy output is stable; by setting a specific constant current supply current, its color temperature can be ensured to be 2856K. This standard lamp uses air-cooled heat dissipation, and the stable working time can reach 2000 hours.

[0047] Example 2

[0048] As shown in Figure 3 the light source intensity standard lamp, which does not have components connected to the spectrometer: the adapter cylinder 10, the fiber optic adapter 3 and the fiber optic connector 1, and the rest is the same as in Example 1.

[0049] The standard lamp in this embodiment is used as a spatial light intensity calibration light source. As shown in Figure 4 the light source intensity standard lamp 16 of this embodiment is inserted into the liquid sample stage 20. The light source intensity standard lamp 16 and the liquid sample stage 20 are both located in the sample chamber 19 and placed on the optical platform 18. The sample chamber 19 is surrounded by the excitation spectrometer 14 and the emission spectrometer 17. During calibration, the excitation spectrometer is in the off state, and the light emitted by the light source intensity standard lamp 16 is incident on the emission spectrometer 17 through the lens 15, and the spectral intensity of the emission spectrometer 17 is calibrated by spatial light.

[0050] Example 3

[0051] Different from Example 2, the positioning frame is an integral non-closed positioning frame, the non-closed area is less than or equal to 1 / 4 of the perimeter of the positioning frame, the non-closed end extends out of the fixed end, and through holes are provided at each fixed end. The positioning assembly may further include screws that cooperate with the through holes and nuts that cooperate with the screws. By passing the screws through the through holes and screwing the nuts into the screws, the positioning frame can be fixed on the outer wall side surface.

[0052] Example 4

[0053] Different from Example 2, the positioning frame is composed of two identical half frames. The end of each half frame extends out of the fixed end, and through holes are provided at each fixed end. The positioning assembly includes screws that cooperate with the through holes and nuts that cooperate with the screws. By passing the screws through the through holes to combine the half frames and screwing the nuts into the screws, the positioning frame can be fixed on the outer wall side surface.

[0054] The above describes the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A standard lamp for light source intensity, characterized in that, The light source intensity standard lamp includes a light-emitting component, a positioning component, and a heat dissipation component; Among them, the light-emitting component includes a lamp holder, a light bulb disposed on the lamp holder, and an outer wall. The outer wall is disposed outside the light bulb and the lamp holder for protecting the light bulb and the lamp holder; the outer wall can enter the cuvette holder in the spectral measurement device; The positioning component is disposed on the side surface of the outer wall, and the positioning component can move up and down along the side surface of the outer wall; the positioning component includes a positioning frame, and the size of the positioning frame is larger than the size of the cuvette holder for positioning the position of the light bulb in the cuvette holder; the size and shape of the outer wall are matched with the size and shape of the positioning frame so that the positioning frame can move on the side surface of the outer wall; The light source intensity standard lamp further includes an adapter cylinder, an optical fiber adapter, and an optical fiber connector. The adapter cylinder is located outside the light bulb and surrounds the light bulb. The optical fiber adapter is located outside the adapter cylinder and surrounds the adapter cylinder. The optical fiber connector is assembled on the through hole on the outer surface of the adapter cylinder. The light emitted from the light bulb enters the optical fiber through the through hole via the optical fiber connector and irradiates the sample.

2. The light source intensity standard lamp according to claim 1, wherein A light passing hole is provided on the side surface of the outer wall; the shape of the light passing hole is a circular hole.

3. The standard lamp for light source intensity according to claim 1, wherein The structure of the positioning frame is an integral closed positioning frame, an integral non-closed positioning frame, or a combined positioning frame.

4. The standard lamp for light source intensity according to claim 3, characterized in that, The positioning component further includes a fixing member capable of fixing the positioning frame to the side surface of the outer wall.

5. The standard lamp for light source intensity according to claim 4, characterized in that, The positioning component further includes a locking member cooperating with the fixing member.

6. The standard light source for light source intensity according to claim 3, characterized in that When the positioning frame is an integral closed positioning frame, the positioning component further includes a screw. A screw hole cooperating with the screw is provided on the side surface of the positioning frame. By screwing in and out the screw, the fixing and moving of the positioning frame on the outer wall surface are controlled.

7. The standard lamp for light source intensity according to claim 3, characterized in that, When the positioning frame is an integral non-closed positioning frame, the non-closed area is less than or equal to 1 / 4 of the perimeter of the positioning frame, and the non-closed end extends out of the fixed end, and through holes are provided at each fixed end.

8. The standard light source for light intensity according to claim 3, wherein When the positioning frame is a combined positioning frame, it is composed of two identical half frames. The end of each half frame can extend out of the fixed end, and through holes are provided at each fixed end.

9. The standard light source for light source intensity according to any one of claims 1-8, characterized in that, The material of the positioning frame is a rigid material or an elastic material; the light bulb is a tungsten halogen lamp.

10. The standard lamp for light source intensity according to any one of claims 1-8, characterized in that, The heat dissipation component includes a fan seat and a fan located on the fan seat.

11. The standard lamp for light source intensity according to claim 10, characterized in that, The light source intensity standard lamp further includes a lampshade. The lampshade is disposed outside the fan, and ventilation holes are provided on the lampshade.

12. The standard light source for light source intensity according to any one of claims 1-8, characterized in that, The light source intensity standard lamp further includes a power connector for connecting to an external power source to supply power to the light source intensity standard lamp.

13. An application of the light source intensity standard lamp according to any one of claims 1-12 in a spectral measurement device, wherein the light source intensity standard lamp is used for calibrating the spectral measurement device or as a light source in the spectral measurement device.

14. The application according to claim 13, wherein The spectral measurement device is an optical fiber spectrometer or an emission spectrometer.

Images