An adjustable color temperature flash lamp

Abstract

This utility model relates to the field of photographic equipment technology, specifically an adjustable color temperature flash, including a carrier and at least two light-emitting modules, each mounted on the carrier for projecting light onto a target area; at least two color filter units of different colors, each corresponding to a light-emitting module; the light emitted by each light-emitting module is adjusted by the corresponding color filter element and then mixed in the target area to form a mixed light with a preset color temperature. This utility model, by setting at least two independently controlled light-emitting modules on the carrier and matching them with different color filter units, adopts a collaborative design of "multiple light-emitting modules + multiple color filter units," eliminating the need to interrupt the shooting process to remove and replace color filters, thus avoiding missing crucial moments. Simultaneously, the precise color temperature adjustment and rapid switching response achieved through independent control effectively compensate for the shortcomings of traditional warm and cool light source combination adjustments, such as insufficient precision and difficulty in matching rapid light changes.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment technology, specifically to an adjustable color temperature flash. Background Technology

[0002] In the fields of photography and videography, flash units are widely used as important supplementary lighting devices in various scenarios. Whether in dimly lit indoor environments such as conference rooms and exhibition halls, or outdoors at night, flash units can provide additional light for the subject, ensuring the sharpness and color reproduction of the captured image.

[0003] Traditional flash units typically have a fixed color temperature. If adjustment is needed to suit the environment, there are two common methods: First, a color filter is added to the flash head. In a warm, yellowish environment (such as incandescent lighting where the ambient color temperature is low), a blue filter is used to increase the flash color temperature to neutralize the warm yellow. In a cool, bluish environment (such as fluorescent lighting or cloudy outdoor conditions where the ambient color temperature is high), an orange filter is used to decrease the flash color temperature to counteract the cool blue, thus balancing the color temperature with the environment. Second, the color temperature is directly adjusted by combining a cool light source (corresponding to a high color temperature) with a warm light source (corresponding to a low color temperature), forming a different technical path from filter adjustment.

[0004] However, in real-world shooting scenarios where lighting changes rapidly, both adjustment methods have significant drawbacks. When relying on color filters, if a color temperature deviation is detected, the photographer must stop shooting to select the appropriate size from numerous filters and disassemble and install them. This is not only time-consuming and laborious but also prone to causing distraction and missing crucial moments. On the other hand, using a combination of warm and cool light sources often suffers from insufficient adjustment precision and slow color temperature switching response, making it difficult to accurately match rapidly changing lighting conditions and potentially affecting the shooting results. Therefore, we propose an adjustable color temperature flash to effectively address these drawbacks. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable color temperature flash lamp to solve the problems mentioned in the background art, where adjusting the color temperature by relying on color filters requires interrupting the shooting, and adjusting by combining warm and cool light sources has insufficient accuracy.

[0006] This utility model is achieved through the following technical solution: an adjustable color temperature flash lamp, including a carrier, and further comprising:

[0007] At least two light-emitting modules are installed on a carrier to project light onto the target area;

[0008] At least two color filter units of different colors are provided, and each color filter unit is set in a one-to-one correspondence with each light-emitting module; the light emitted by each light-emitting module is adjusted by the corresponding color filter element and then mixed in the target area to form a mixed light with a preset color temperature.

[0009] Optionally, the light-emitting module is any one or any combination of xenon lamps, krypton lamps, neon lamps, and argon lamps.

[0010] Optionally, the light-emitting module is a xenon lamp.

[0011] Optionally, the color filter unit is a transparent carrier sheet with a color filter material attached to its surface.

[0012] Optionally, the transparent support sheet is selected from at least one of inorganic non-metallic materials, organic polymer materials, and their composite materials.

[0013] Optionally, the inorganic non-metallic material includes at least one of glass, quartz, and glass-ceramic.

[0014] The organic polymer material includes at least one of polymethyl methacrylate, polycarbonate, and cyclic olefin copolymer;

[0015] The composite material includes at least one of glass fiber reinforced plastic and multilayer composite film.

[0016] Optionally, the color filter unit is colored glass.

[0017] Optionally, the color filter unit is a colored acrylic sheet.

[0018] Optionally, the color filter unit is a color filter paper.

[0019] Optionally, the color filter unit is a liquid crystal filter.

[0020] Optionally, the color filter unit can be detachably disposed on the outside of the corresponding light-emitting module.

[0021] Optionally, the color filter unit can be detachably connected to the light-emitting module by means of a snap-fit, magnetic attraction, or adhesive.

[0022] Compared with the prior art, this utility model provides an adjustable color temperature flash lamp, which has the following beneficial effects:

[0023] 1. This utility model, by setting at least two independently controlled light-emitting modules on the carrier and matching them with different color filter units, adopts a collaborative design of "multiple light-emitting modules + multiple color filter units," which fundamentally solves the drawbacks of traditional flash units: it eliminates the need to interrupt the shooting process to remove and replace color filters, avoiding time-consuming and laborious operations and the loss of precious moments due to distraction. Simultaneously, the precise color temperature adjustment and rapid switching response achieved through independent control effectively compensate for the shortcomings of traditional warm and cool light source combinations in terms of insufficient precision and difficulty in matching rapid changes in light. Ultimately, it achieves multiple improvements in shooting efficiency, color reproduction, and equipment compatibility, making it particularly suitable for professional photography, film and television recording, and other fields with high requirements for light control.

[0024] 2. This utility model uses a xenon lamp as the light-emitting module, which, thanks to its unique photoelectric properties, brings significant technical advantages and application value to flash units. On one hand, xenon lamps possess high-power instantaneous burst characteristics, with extremely fast discharge speeds and flash durations reaching the microsecond level. This meets the stringent requirements of high-speed photography for extremely short flash durations, accurately capturing the fleeting moments of high-speed motion such as bullets flying or water droplets splashing, avoiding motion blur. Simultaneously, its instantaneous high-intensity light output effectively suppresses complex ambient light, ensuring accurate exposure of the subject and significantly improving shooting results in low-light or backlit scenes. Attached Figure Description

[0025] Figure 1 This is the front view of the present invention;

[0026] Figure 2 This is a rear view of the present invention;

[0027] Figure 3 This is an exploded view of the present invention.

[0028] In the diagram: 1. Carrier; 2. Circuit board; 3. Light-emitting module; 4. Color filter unit; 5. Battery; 6. Capacitor; 7. Display screen; 8. Control buttons; 9. Hot shoe fixture; 10. Trigger. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: Please refer to Figures 1 to 3 An adjustable color temperature flash lamp includes a carrier 1, which serves as a basic carrier and can be a shell with an inner cavity, providing a stable mounting space for the various components inside the device.

[0031] It should be noted that a circuit board 2, which serves as the core control unit of the flash unit, is installed inside the housing. A battery 5, electrically connected to the circuit board 2, is also installed inside the housing to provide stable power to the flash unit. Additionally, a display screen 7 and several control buttons 8 are installed on the outer wall of the housing, and both the display screen 7 and the control buttons 8 are electrically connected to the circuit board 2. The display screen 7 can display the current flash unit's color temperature, battery status, flash intensity level, and other parameters in real time. Users can use the control buttons 8 to adjust the flash's emission ratio, set the strobe mode, and other functions.

[0032] In this embodiment, a hot shoe mounting member 9 is fixed to the bottom of the carrier 1. The hot shoe mounting member 9 is used to connect to the hot shoe interface on the external camera, ensuring that the flash can be fixedly mounted on the external camera. A trigger 10 electrically connected to the circuit board 2 is fixed to the bottom of the hot shoe mounting member 9. The trigger 10 is used to enable communication between the circuit board 2 and the external camera. When the flash is mounted on the camera through the hot shoe mounting member 9, the trigger 10 can receive trigger signals and parameter commands sent by the camera in real time, achieving precise synchronization between the flash and the camera shutter. At the same time, it feeds back the working status of the flash to the camera system, ensuring intelligent and coordinated light effect control during shooting.

[0033] This embodiment also includes at least two light-emitting modules 3 and at least two color filter units of different colors 4.

[0034] Specifically, each light-emitting module 3 is mounted on the carrier 1 and is used to project light onto the target area. In this embodiment, each light-emitting module 3 is arranged in an array on the same wall of the carrier 1. This arrangement ensures that the light output direction of each light-emitting module 3 is consistent, thereby effectively avoiding the optical axis offset problem that may occur when multiple light sources work together, and ensuring that the light projected onto the target area has good consistency and stability.

[0035] Each color filter unit 4 is set in a one-to-one correspondence with each light-emitting module 3, and each color filter unit 4 is set between the corresponding light-emitting module 3 and the target area; the light emitted by each light-emitting module 3 is adjusted by the corresponding color filter element 4 and then mixed in the target area to form a mixed light with a preset color temperature.

[0036] It should be added that each light-emitting module 3 is electrically connected to the circuit board 2. The circuit board 2 can independently control the light intensity and on / off state of each light-emitting module 3, providing the hardware basis for dual-color temperature adjustment. A capacitor 6 is electrically connected between the circuit board 2 and each light-emitting module 3. The capacitor 6 has fast charging and discharging characteristics, which not only releases high-intensity electrical energy instantaneously to meet the high-power flash requirements of the light-emitting module 3, but also effectively filters out high-frequency noise in the circuit, ensuring stable current output and preventing voltage fluctuations from damaging the light-emitting module 3, further improving the lifespan and operational stability of the flash unit.

[0037] The following is an introduction to the light-emitting module 3:

[0038] Light-emitting module 3 can be any one or any combination of xenon, krypton, neon, or argon lamps. Specifically, xenon-based light sources are configured to provide high color temperature (5500K-6500K) cool white light, suitable for scenarios requiring high brightness and high color fidelity. Krypton-based light sources are configured to provide medium-low color temperature (3000K-4500K) warm white light, suitable for scenarios requiring soft light, such as portrait photography and film lighting. Neon-based light sources are configured to provide low color temperature (1800K-2500K) orange-red light, suitable for special effects lighting or retro-style shooting. Argon-based light sources are configured to provide high-energy ultraviolet / blue light, suitable for scenarios requiring specific spectra, such as industrial inspection and high-speed photography.

[0039] In this embodiment, the light-emitting module 3 is a xenon lamp, which has the characteristics of high-power instantaneous burst, extremely fast discharge speed, and flash duration of up to microseconds. It can meet the stringent requirements of high-speed photography for extremely short flash duration, accurately capturing the moment of high-speed movement such as bullet flight and water droplet splash, avoiding motion blur. At the same time, its instantaneous strong light output can effectively suppress complex ambient light, ensuring accurate exposure of the subject and significantly improving the shooting effect in low-light or backlight scenes.

[0040] The following is a description of color filter unit 4:

[0041] In this embodiment, the color filter unit 4 is a transparent carrier sheet with a color filter material attached to its surface, ensuring that the light is directly applied to the subject after being filtered, thereby achieving efficient color conversion and color temperature adjustment.

[0042] Specifically, the transparent carrier sheet is selected from at least one of inorganic non-metallic materials, organic polymer materials, and their composite materials. Inorganic non-metallic materials include at least one of glass, quartz, and glass-ceramic. Organic polymer materials include at least one of polymethyl methacrylate, polycarbonate, and cyclic olefin copolymers. Composite materials include at least one of glass fiber reinforced plastics and multilayer composite films. This diverse selection of materials can adapt to different application scenarios and performance requirements, enhancing the applicability and practicality of the color filter unit 4.

[0043] In terms of dual color temperature adjustment, the color filter unit 4 can achieve various effects through different color configurations. For example, a combination of colorless transparency and light yellow can present a cool white-warm white effect, suitable for everyday shooting. Pairing it with light blue and light orange can simulate sunlight-cloudy lighting, fitting outdoor scenes. The combination of amber and sky blue can create a creative lighting atmosphere.

[0044] Example 2: The difference between this example and Example 1 is that the color filter unit 4 is colored glass. This colored glass is made by adding specific metal oxides or rare earth elements to the glass raw material. For example, adding cobalt can form blue glass, and adding iron can form green glass. These added elements can selectively absorb specific wavelengths of light, thereby achieving the adjustment of the color and color temperature of the light.

[0045] Colored glass, used as color filter unit 4, possesses excellent optical stability and high-temperature resistance, maintaining a stable color filtering effect even under high temperatures generated by prolonged flash operation. Simultaneously, its high mechanical strength ensures it is not easily damaged during use, allowing for long-term stable application in dual-tone flash units, providing stable color temperature adjustment for shooting.

[0046] Example 3: The difference between this example and Examples 1 and 2 is that the color filter unit 4 is a colored acrylic sheet. This colored acrylic sheet is formed during the acrylic material production process by adding organic dyes or pigments to create a sheet with a specific color. The organic dyes or pigments are uniformly dispersed in the acrylic matrix, and when light passes through, they selectively absorb and transmit the light, thereby changing the color temperature of the light.

[0047] Colored acrylic sheets are lightweight, flexible, and easy to process and shape. They can be processed into various shapes and sizes to fit different dual-color temperature flash units. Furthermore, their relatively low cost makes them suitable for mass production, reducing the overall cost of dual-color temperature flash units while maintaining effective color filtering.

[0048] Example 4: The difference between this example and Examples 1, 2, and 3 is that the color filter unit 4 is a color filter paper. This color filter paper uses polyester film as the base material and forms a color filter functional layer through processes such as coating a polyurethane coating containing organic dyes, laminating a pre-dyed polyester film with a transparent PET substrate, or dispersing 10nm-100nm quantum dot materials in a PET substrate, thereby achieving spectral modulation. Compared with traditional paper filters, this structure can work stably under RH≤95% conditions, the color temperature offset can be precisely controlled within ±200K, the weight is only 1 / 10 of that of a glass filter of the same size, and the cost can be reduced by more than 60% through roll-to-roll production.

[0049] Example 5: The difference between this example and Examples 1, 2, 3, and 4 is that the color filter unit 4 is a liquid crystal filter, which mainly consists of two transparent electrode substrates and a liquid crystal layer sandwiched in between. By applying different voltages to the transparent electrodes, the arrangement state of the liquid crystal molecules can be changed, thereby changing the light transmission characteristics of the liquid crystal filter and realizing dynamic adjustment of the light color temperature.

[0050] The biggest advantage of the liquid crystal filter as color filter unit 4 is that it can achieve rapid and continuous adjustment of color temperature through electrical signals, without the need for manual replacement of the color filter element. This allows dual-color temperature flashes to adjust the color temperature in real time according to changes in the shooting environment, greatly improving the intelligence and automation of the flash, and making it particularly suitable for shooting scenarios that require rapid response and dynamic adjustment of color temperature, such as live streaming and video shooting.

[0051] In all the above embodiments, the color filter unit 4 can cooperate with the light-emitting module 3. Through the collaborative design of "multiple light-emitting modules + multiple color filter units", it not only fundamentally solves the drawbacks of traditional flash units: there is no need to interrupt the shooting process to disassemble and replace the color filter, avoiding time-consuming and laborious operations and missed wonderful moments caused by distraction, but also achieves precise color temperature adjustment and rapid switching response through independent control, effectively making up for the defects of insufficient precision and difficulty in matching rapid changes in light in the traditional combination adjustment of warm and cool light sources.

[0052] Meanwhile, by employing red, green, and blue primary color filter units 4, in conjunction with independently controlled light-emitting modules 3, the precise ratio of the three primary colors (red, green, and blue) and mixed colors can be achieved by adjusting the intensity of the interaction between different primary color filter units 4 and their corresponding light-emitting modules 3. This allows for the output of any color light across the full spectrum, efficiently realizing the core function of an RGB flash. This design comprehensively covers the diverse needs for light color temperature and color in different shooting scenarios, ultimately achieving a comprehensive improvement in shooting efficiency, color reproduction, color adjustment flexibility, and equipment compatibility. It is particularly suitable for professional photography, film and television recording, and other fields with stringent requirements for light control.

[0053] In some embodiments of this application, the color filter unit 4 is detachably mounted on the outside of the corresponding light-emitting module 3. When no special color temperature adjustment is required for shooting, the user can easily remove the color filter unit 4, allowing the xenon lamp to directly output standard white light. After removing the color filter unit 4, the flash flux loss is controlled within 3%, effectively ensuring light purity and output stability, thus meeting both professional adjustment and everyday general needs.

[0054] In this embodiment, the color filter unit 4 is detachably connected to the light-emitting module 3 via a snap-fit, magnetic, or adhesive method. All three connection methods have undergone vibration resistance testing, ensuring stable installation of the color filter unit 4 within an ambient temperature range of -20℃ to 60℃. It also supports over 500 cycles of disassembly and reassembly, balancing structural reliability and operational flexibility, perfectly adapting to both professional color temperature adjustment needs and everyday general lighting scenarios.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A color temperature adjustable flash lamp comprising a carrier (1), characterized in that, Also includes: At least two light-emitting modules (3) are installed on the carrier (1) for projecting light onto the target area; At least two color filter units (4) of different colors are provided, and each color filter unit (4) is set in correspondence with each light-emitting module (3). The light emitted by each light-emitting module (3) is adjusted by the corresponding color filter element (4) and then mixed in the target area to form a mixed light with a preset color temperature.

2. A tunable color temperature flashlamp as defined in claim 1, wherein: The light-emitting module (3) is any one or any combination of xenon lamp, krypton lamp, neon lamp and argon lamp.

3. A tunable color temperature flashlamp as defined in claim 2, wherein: The light-emitting module (3) is a xenon lamp.

4. A color temperature adjustable flash lamp as claimed in claim 1, characterized in that: The color filter unit (4) is a transparent carrier sheet with color filter material attached to its surface.

5. A tunable color temperature flashlamp as defined in claim 4, wherein: The transparent support sheet is selected from at least one of inorganic non-metallic materials, organic polymer materials and their composite materials.

6. A tunable color temperature flashlamp as defined in claim 5, wherein: The inorganic non-metallic material includes at least one of glass, quartz, and microcrystalline glass; The organic polymer material includes at least one of polymethyl methacrylate, polycarbonate, and cyclic olefin copolymer; The composite material includes at least one of glass fiber reinforced plastic and multilayer composite film.

7. A color temperature adjustable flash lamp as defined in claim 1, wherein: The color filter unit (4) is colored glass.

8. A color temperature adjustable flash lamp as defined in claim 1, wherein: The color filter unit (4) is a colored acrylic sheet.

9. A color temperature adjustable flash lamp as defined in claim 1, wherein: The color filter unit (4) is a color filter paper.

10. A color temperature adjustable flash lamp as claimed in claim 1, characterized in that: The color filter unit (4) is a liquid crystal filter.

11. A color temperature adjustable flash lamp as defined in claim 1, wherein: The color filter unit (4) is detachably mounted on the outside of the corresponding light-emitting module (3).

12. A tunable color temperature flashlamp as defined in claim 11, wherein: The color filter unit (4) is detachably connected to the light-emitting module (3) by means of snap-fit, magnetic attraction or adhesive.

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