Underwater lighting lamp spectrum modulation method and system
The method and system adjust light source power in underwater lighting fixtures to compensate for varying water conditions, ensuring consistent spectral output at the target location.
Patent Information
- Application Number
- CN202410046269.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2025-07-15
AI Technical Summary
Due to the variation of the spectral transmittance of existing underwater lighting fixtures under different underwater conditions, the spectrum does not meet the needs when the emitted light reaches the target lighting position and cannot be effectively adjusted.
By measuring the distance between the underwater lighting fixture and the target lighting position and the spectral transmittance of the current water body, the working power of different color light sources is calculated in real time to ensure that the emitted light reaches the required spectrum when it is in the target position.
Real-time modulation of the exit spectrum of underwater lighting fixtures is achieved, ensuring that the exit spectrum is consistent with the target under different underwater conditions, and improving the lighting effect.
Smart Images
Figure CN120321857A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to underwater lighting fixtures, and in particular, to a method and system for spectral modulation of underwater lighting fixtures. Background Art
[0002] With the increasing demand for underwater operation scenarios, the requirements for various customized lighting scenarios are also getting higher and higher. Currently, when existing underwater lighting fixtures are used under different underwater conditions, color changes of varying degrees will occur, and sometimes they cannot even be used due to large color changes. The applicant found that the reason is that existing underwater lighting fixtures have fixed spectra. Since there are significant differences in the spectral transmittance between underwater and the atmosphere, and factors such as different water depths and different salt contents lead to differences in spectral transmittance, when the emitted light of the underwater lighting fixture reaches the target lighting position, the attenuated spectrum is no longer the required spectrum. Summary of the Invention
[0003] The object of the present invention is to solve the problems in the prior art, and to provide a new method and system for spectral modulation of underwater lighting fixtures.
[0004] To achieve the above object, a technical solution provided by the present invention: A method for spectral modulation of an underwater lighting fixture, comprising:
[0005] Determine the target lighting distance between the underwater lighting fixture and the target lighting position;
[0006] Determine the spectral transmittance of the water body where the underwater lighting fixture is currently located; and,
[0007] Based on the determined target lighting distance and the determined spectral transmittance, determine the working power of different color light sources in the underwater lighting fixture to ensure that when the emitted light of the underwater lighting fixture reaches the target lighting position, the attenuated spectrum is exactly the required spectrum.
[0008] Another technical solution provided by the present invention: A system for spectral modulation of an underwater lighting fixture, comprising: a lighting component, a ranging component, a transmittance testing component, and a control component. The lighting component is used to illuminate the target lighting position. The ranging component is used to determine the target lighting distance between the underwater lighting fixture and the target lighting position. The transmittance testing component is used to determine the spectral transmittance of the water body where the underwater lighting fixture is currently located. The control component is used to determine the working power of different color light sources in the underwater lighting fixture based on the determined target lighting distance and the determined spectral transmittance, to ensure that when the emitted light of the underwater lighting fixture reaches the target lighting position, the attenuated spectrum is exactly the required spectrum.
[0009] As a preferred solution of the system for spectral modulation of an underwater lighting fixture, the light source is selected from LED, LD, or a combination of LED and LD.
[0010] As a preferred solution of the spectral modulation system of the underwater lighting fixture, the transmittance test component has a channel, a transmitter on one side of the channel, and a receiver on the opposite side of the channel. The transmitter is opposite to the receiver, and the current water body passes through the inside of the channel. The light beam of the transmitter reaches the receiver after passing through the current water body.
[0011] Compared with the prior art, the beneficial effects of the present invention are at least as follows: The target illumination distance between the underwater lighting fixture and the target illumination position is measured in real time, and the spectral transmittance of the water body where the underwater lighting fixture is currently located is measured in real time. According to the target illumination distance and the spectral transmittance, the working powers of different color light sources in the underwater lighting lamp are calculated in reverse, so as to ensure that when the emitted light of the underwater lighting fixture reaches the target illumination position, the attenuated spectrum is exactly the required spectrum. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a flowchart of the method for spectral modulation of an underwater lighting fixture according to the present invention.
[0013] Figure 2 is a schematic structural diagram of the spectral modulation system of the underwater lighting fixture according to the present invention.
[0014] Figure 3 is a schematic structural diagram of the transmittance test component in the spectral modulation system of the underwater lighting fixture according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0016] Please refer to Figure 1 , which shows a method for spectral modulation of an underwater lighting fixture. The method for spectral modulation of an underwater lighting fixture includes:
[0017] Step S1, determining the target illumination distance between the underwater lighting fixture and the target illumination position.
[0018] Step S2, determining the spectral transmittance of the water body where the underwater lighting fixture is currently located.
[0019] Step S3, based on the target illumination distance determined in step S1 and the spectral transmittance determined in step S2, determining the working powers of different color light sources in the underwater lighting fixture, so as to ensure that when the emitted light of the underwater lighting fixture reaches the target illumination position, the attenuated spectrum is exactly the required spectrum (i.e., the target spectrum).
[0020] Please refer to Figure 2 , which shows an underwater lighting fixture spectral modulation system. The underwater lighting fixture spectral modulation system includes a lighting component 1, a ranging component 2, a transmittance testing component 3, a control component 4, etc.
[0021] The lighting component 1 is used to illuminate a target lighting position. The lighting component 1 has more than two color light sources, such as including: RGBW four colors. The light source can be selected from LED, LD, or a combination of LED and LD.
[0022] The ranging component 2 is used to determine the target lighting distance between the underwater lighting fixture and the target lighting position.
[0023] The transmittance testing component 3 is used to determine the spectral transmittance of the water body where the underwater lighting fixture is currently located.
[0024] During specific implementation, please refer to Figure 3 , the transmittance testing component 3 has a channel 31, a transmitter 32 on one side of the channel 31, and a receiver 33 on the opposite side of the channel 31. The transmitter 32 is relative to the receiver 33. The light beam of the transmitter 32 passes through the current water body (the current water body passes through the channel 31) and reaches the receiver 33. The spectral transmittance can be calculated according to the ratio of the light intensity transmitted from the water body to the light intensity incident into the water body.
[0025] The control component 4 is used to determine the working power of different color light sources in the underwater lighting fixture based on the determined target lighting distance and the determined spectral transmittance, ensuring that when the emitted light of the underwater lighting fixture reaches the target lighting position, the attenuated spectrum is exactly the required spectrum (i.e., the target spectrum): the external input specifies the required spectrum and the required target lighting position; the control component 4 sends an instruction to the ranging component 2 according to the external input, and the ranging component 2 measures the target lighting distance between the underwater lighting fixture and the target lighting position; the control component 4 sends an instruction to the transmittance testing component 3, and the transmittance testing component 3 measures the spectral transmittance of the current underwater; the control component 4 receives the signal feedback from the ranging component 2 and the transmittance testing component 3, calculates the working power of different color light sources in the underwater lighting fixture for achieving the required spectrum (i.e., the target spectrum) according to theoretical calculation, and controls the lighting component 1 to adjust the working power of each color lighting light source. Among them, the spectrum specified by the external input can be a specific spectrum, or a system preset state such as color temperature, color, etc.
[0026] Take an example to illustrate:
[0027] After selecting multiple light source types for the underwater lighting fixture, each light source will have an absolute spectrum - electric power curve.
[0028] Suppose the selected light sources are L1, L2, and L3, and their relative spectra are L1(λ), L2(λ), and L3(λ) respectively. Several color coordinate levels will be preset in the product in advance, and the preset method for the levels is as follows:
[0029] Suppose the optical powers of the three light sources are P1, P2, and P3 respectively, then:
[0030]
[0031] Where r(λ), g(λ), and b(λ) are the standard RGB tristimulus values in colorimetry.
[0032] Then, perform transformation according to the following matrix:
[0033]
[0034] The color coordinates are determined by the following formula:
[0035]
[0036] Adjust the values of P1, P2, and P3 to obtain the required color coordinates (x, y).
[0037] According to the above calculation principle, preset several color coordinate levels, such as the blackbody radiation line of 4000K or the blackbody radiation line of 5000K.
[0038] After selecting a specific level, measure the wavelength transmittance of the underwater where the lighting product is located and consider the attenuation caused by the target distance, which is recorded as k(λ) as a whole. Divide the corresponding wavelengths of the spectra of the three light sources by the corresponding transmittance to obtain the actual spectra after passing through the water body
[0039] L1(λ)', L2(λ)', L3(λ)'
[0040] Then, adjust the powers of the three according to the optimization algorithm as follows:
[0041] P'1, P'2, P'3
[0042] Repeatedly calculate the above formula with the new powers to ensure that after passing through a certain distance of water body, the color coordinates reaching the target are still the required ones.
[0043] If it is necessary to consider the color coordinates of the light rays reaching the target and returning, then the square value of k(λ) at each wavelength needs to be calculated.
[0044] The above only expresses the embodiments of the present invention, which are described in a relatively specific and detailed manner. However, it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.
Claims
1. A method for spectral modulation of an underwater lighting fixture, characterized in that, Comprising: Determining a target illumination distance between an underwater lighting fixture and a target illumination position; Determining a spectral transmittance of the water body where the underwater lighting fixture is currently located; And, Based on the determined target illumination distance and the determined spectral transmittance, determining the operating powers of different color light sources in the underwater lighting fixture, ensuring that when the emitted light of the underwater lighting fixture reaches the target illumination position, the attenuated spectrum is exactly the required spectrum.
2. An underwater lighting fixture spectral modulation system, characterized in that, Comprising: A lighting component, a ranging component, a transmittance testing component, and a control component. The lighting component is used to illuminate the target illumination position. The ranging component is used to determine the target illumination distance between the underwater lighting fixture and the target illumination position. The transmittance testing component is used to determine the spectral transmittance of the water body where the underwater lighting fixture is currently located. The control component is used to determine the operating powers of different color light sources in the underwater lighting fixture based on the determined target illumination distance and the determined spectral transmittance, ensuring that when the emitted light of the underwater lighting fixture reaches the target illumination position, the attenuated spectrum is exactly the required spectrum.
3. The underwater lighting fixture spectral modulation system according to claim 2, wherein The light source is selected from an LED, an LD, or a combination of an LED and an LD.
4. The underwater lighting fixture spectral modulation system according to claim 2, wherein, The transmittance testing component has a channel, a transmitter on one side of the channel, and a receiver on the opposite side of the channel. The transmitter is opposite to the receiver. The current water body passes through the inside of the channel, and the beam of the transmitter reaches the receiver after passing through the current water body.