Micrometer dimming-based small halogen tungsten lamp light source

Abstract

The utility model discloses a small halogen tungsten lamp light source based on micrometer dimming, and mainly relates to the field of light sources. Comprising a mounting shell, a collimating mirror is arranged at one end of the mounting shell, a lamp bead coaxial with the collimating mirror is arranged in the mounting shell, a micrometer is embedded in the position, located between the lamp bead and the collimating mirror, of the mounting shell, the movable end of the bottom of the micrometer is located in the mounting shell and can shield the lamp bead, a light barrier is embedded in the mounting shell, and a light source is arranged in the light barrier. The light barrier is located between the micrometer and the collimating mirror, and the light barrier is also located on the axis where the lamp bead and the collimating mirror are located. The beneficial effects of the utility model lie in that the output light intensity is adjusted through the micrometer, the fixed part of the micrometer is directly embedded and fixed with the mounting shell, and only the movable part of the micrometer needs to be adjusted, so that the color temperature is not influenced, and the defects and deficiencies of a fit clearance and a screw-thread fit mode do not exist; and high-density adjustment can be carried out on the output light intensity more finely and stably.

Description

Technical Field

[0001] This utility model relates to the field of light sources, specifically a small halogen tungsten lamp light source based on micrometer dimming. Background Technology

[0002] A halogen lamp is a gas-filled incandescent lamp containing some halogen elements or halides. Its light source features a wide and continuous spectral range, stable color temperature, and good color rendering. Small halogen lamps are commonly used in fiber optic sensing, materials physics research, transmission and reflection measurements, color measurement, and spectral characterization. To prevent rapid oxidation or sublimation of the filament at high temperatures, the bulb is filled with an oxidizing gas. Traditional G4 or candle-type bulbs emit light from a distance, receiving light from the side; only a small portion reaches the optical fiber. Although they have high power, their actual luminous efficacy is very low.

[0003] Halogen tungsten lamp light sources typically require preheating to stabilize their light emission; the preheating time depends on the bulb's wattage and quality. Currently, the output power of halogen tungsten lamps can be adjusted by regulating the current and using physical shading. However, voltage or current dimming can cause color temperature changes because tungsten lamps are essentially blackbody radiators; a decrease in current leads to a drop in the temperature of the tungsten filament, resulting in a decrease in color temperature and a change in the light source's trend line. Physical shading, on the other hand, changes the output light intensity by altering the light-blocking ratio. While this does not affect color temperature, the use of screws or apertures for dimming and shading in most existing small halogen tungsten lamp light sources introduces certain defects and deficiencies in the fit and thread configuration between the screw and the halogen tungsten lamp, leading to less precise and stable adjustments. Utility Model Content

[0004] The purpose of this invention is to provide a small halogen tungsten lamp light source based on micrometer dimming. It adjusts the output light intensity through a micrometer. The fixed part of the micrometer is directly embedded in the mounting shell. Only the moving part of the micrometer needs to be adjusted. It does not affect the color temperature, nor does it have any defects or deficiencies in the fitting gap or threaded fitting method. It can adjust the output light intensity more precisely and stably with high density.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A small halogen tungsten lamp light source based on micrometer dimming includes a mounting housing. A collimating lens is provided at one end of the mounting housing. An LED bead coaxial with the collimating lens is provided inside the mounting housing. A micrometer is embedded on the mounting housing between the LED bead and the collimating lens. The movable end of the bottom of the micrometer is located inside the mounting housing and can block the LED bead. A light-blocking plate is embedded on the mounting housing. The light-blocking plate is located between the micrometer and the collimating lens, and the light-blocking plate is also located on the axis of the LED bead and the collimating lens.

[0007] Furthermore, the mounting housing is provided with a toggle switch and an indicator light on its end face.

[0008] Furthermore, the toggle switch and indicator light are located on the same end face as the collimating lens.

[0009] Furthermore, the mounting housing also contains a circuit board that is electrically connected to the LED beads.

[0010] Furthermore, a power port is provided at the end of the mounting housing away from the collimating lens.

[0011] Furthermore, the upper and lower travel stops of the micrometer's bottom movable end are respectively completely unobstructed by the LED and completely obstructed by the LED.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This patent features a micrometer embedded in a mounting housing. The fixed part of the micrometer, with its adjustment knob, is fixedly connected to the housing and exposed externally, while the movable part of the micrometer is located inside the housing. This eliminates any gaps between the micrometer and the housing. The extension length of the movable part can be adjusted by turning the knob to regulate the degree of light source obstruction, thereby adjusting the light intensity. This design also overcomes the shortcomings of traditional threaded connections. Utilizing the micrometer's own telescopic adjustment structure, fine adjustments to the light intensity are possible, making the light intensity adjustment more precise and achieving high-precision control of the output light intensity. Furthermore, the overall mechanical dimming avoids color temperature variations caused by voltage or current dimming, resulting in better performance and practicality. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Appendix Figure 2 This is a schematic diagram of the structure of this utility model.

[0016] Appendix Figure 3 This is a front structural sectional view of the present invention.

[0017] The labels shown in the attached diagram:

[0018] 1. Mounting housing; 2. Collimating lens; 3. LED; 4. Micrometer; 5. Light shield; 6. Toggle switch; 7. Indicator light; 8. Circuit board; 9. Power port. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0020] This invention relates to a small halogen tungsten lamp light source based on micrometer dimming. The main structure includes a mounting housing 1, with a collimating lens 2 at one end. Inside the mounting housing 1 is a lamp bead 3, coaxial with the collimating lens 2. The lamp bead 3 uses a stainless steel-encapsulated cylindrical bulb, which receives light through a built-in lens directly in front of the filament, greatly improving luminous efficacy. Furthermore, the light is refocused by the collimating lens, achieving the intensity of a 20W or higher G4 bulb at a power consumption of only 2.5W. A micrometer 4 is embedded in the mounting housing 1 between the lamp bead 3 and the collimating lens 2. The fixed part of the micrometer 4 is fixed to the mounting housing 1, with the adjustment knob exposed outside the housing 1, allowing precise adjustment of the length of the lower protruding steel column. The movable end of the micrometer 4 is located inside the mounting housing 1 and can block the lamp bead 3. By adjusting the length of the movable steel column at the bottom of the micrometer 4, the degree of blocking of the lamp bead 3 is adjusted, thereby adjusting the amount of light entering the collimating lens 2 from the lamp bead 3, thus adjusting the light intensity. To control the light intensity of the output light source, a light-blocking plate 5 is embedded in the mounting housing 1 to prevent glare. The light-blocking plate 5 is located between the micrometer 4 and the collimating lens 2, and it is also located on the axis of the lamp bead 3 and the collimating lens 2. This patent allows for direct installation of the micrometer 4 and the mounting housing 1, and the light intensity is adjusted by the adjustment knob on the micrometer 4. This overcomes the defects and deficiencies of traditional structures in terms of installation gap and threaded fit. Utilizing the micrometer 4's own adjustable telescopic characteristics, i.e., telescopic progress down to 0.01mm, fine adjustment of light intensity can be achieved, thus realizing high-precision adjustment of the output light intensity. Moreover, the whole system adopts mechanical dimming, which can avoid the color temperature change problem caused by voltage or current dimming. In addition, the lamp bead 3 is filled with high-purity xenon gas, which has a much better protection effect on the filament than krypton gas. This not only greatly improves the bulb life but also enhances stability. In long-life mode, i.e., when the current is set to 400mA, the official life of this bulb can reach more than 100,000 hours.

[0021] Preferably, the mounting housing 1 is provided with a toggle switch 6 and an indicator light 7 on its end face. The toggle switch 6 and the indicator light 7 are located on the same end face as the collimating lens 2. The lamp can be switched on and off by the toggle switch 6, and the status of the lamp can be seen intuitively by the indicator light 7.

[0022] Preferably, the mounting housing 1 is further provided with a circuit board 8 electrically connected to the lamp bead 3, which serves to stabilize the voltage of the lamp bead 3.

[0023] Preferably, the end of the mounting housing 1 away from the collimating lens 2 is also provided with a power port 9, and an external power supply is connected to the power port 9 to supply power to the lamp beads 3.

[0024] Preferably, the upper and lower travel stops of the bottom movable end of the micrometer 4 are respectively completely unobstructed by the LED bead 3 and completely obstructed by the LED bead 3, so that the micrometer 4 can steplessly adjust the amount of light entering the collimating lens 2 from the LED bead 3, and make the output light intensity of the light source adjustable.

[0025] This patent allows for direct installation of the micrometer 4 to the mounting housing 1, and the light intensity can be adjusted by the adjustment knob on the micrometer 4. This can compensate for the defects and deficiencies of traditional structures in terms of installation gap and threaded fit, and can achieve high-precision adjustment of output light intensity. It solves the problem of the inability to adjust intensity or difficulty in precise adjustment that is common in light sources in the industry. Moreover, the whole system adopts mechanical dimming, which can avoid the color temperature change problem caused by voltage or current dimming.

Claims

1. A small halogen tungsten lamp light source based on micrometer dimming, characterized in that: The device includes a mounting housing (1), one end of which is provided with a collimating lens (2). Inside the mounting housing (1) is a lamp bead (3) coaxial with the collimating lens (2). A micrometer (4) is embedded on the mounting housing (1) between the lamp bead (3) and the collimating lens (2). The movable end of the bottom of the micrometer (4) is located inside the mounting housing (1) and can block the lamp bead (3). A light-blocking plate (5) is embedded on the mounting housing (1). The light-blocking plate (5) is located between the micrometer (4) and the collimating lens (2), and the light-blocking plate (5) is also located on the axis where the lamp bead (3) and the collimating lens (2) are located.

2. The small halogen tungsten lamp light source based on micrometer dimming according to claim 1, characterized in that: The mounting housing (1) has a toggle switch (6) and an indicator light (7) on its end face.

3. The small halogen tungsten lamp light source based on micrometer dimming according to claim 2, characterized in that: The dial (6) and indicator light (7) are located on the same end face as the collimating lens (2).

4. The small halogen tungsten lamp light source based on micrometer dimming according to claim 1, characterized in that: The mounting housing (1) is also provided with a circuit board (8) that is electrically connected to the lamp beads (3).

5. A small halogen tungsten lamp light source based on micrometer dimming according to claim 1, characterized in that: The mounting housing (1) is also provided with a power port (9) at the end away from the collimating lens (2).

6. A small halogen tungsten lamp light source based on micrometer dimming according to claim 1, characterized in that: The upper and lower travel stops of the bottom movable end of the micrometer (4) are completely unobstructed (3) and completely obstructed (3), respectively.

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