CN116017801A

CN116017801A - Dimming method of LED lamp

Info

Publication number: CN116017801A
Application number: CN202310142142.0A
Authority: CN
Inventors: 庄俊尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-04-25

Abstract

The invention discloses a dimming method of an LED lamp. The method comprises the following steps: modeling in optical design software according to the design requirement of the LED lamp to obtain a simulated LED lamp; calculating the distance between each LED module on the simulated LED lamp according to a distance calculation formula, and arranging each LED module on a non-plane according to the distance; and searching four-quadrant light distribution angles corresponding to the LED modules from a pre-stored optical database according to the illumination required by the LED lamp and the uniformity of the light spots, and dimming the LED lamp according to the four-quadrant light distribution angles. According to the dimming method provided by the invention, according to the actual scene requirement, the light spots and uniformity of the lamp are directly adjusted through the four-quadrant light distribution angles, so that the irradiation uniformity of a product is improved, and meanwhile, the risk of excessive development or mold waste is well controlled.

Description

Dimming method of LED lamp

Technical Field

The embodiment of the invention relates to the technical field of optical design, in particular to a design method of an LED lamp.

Background

The existing LED lamp is generally designed into an integrated module due to the factors of LED light source characteristics, cost structures, heat dissipation, water resistance, dust resistance and the like, the arrangement of LEDs on an aluminum substrate is a plane matrix, light energy of lenses is added to LED light source particles, the LED chip light source characteristics are single-sided point light sources with light emitting angles of about 135 degrees on the light emitting surface of the same integrated module, the first light diffraction and diffusion are caused, and the middle stroke from an LED matrix light source in the lamp light emitting module to an irradiated object target can be caused due to hysteria fog or suspended particles in the air, and the second diffraction and diffusion are caused. Even if illuminance and uniformity measured by the track-type brightness distributor are used, there is a quality error in actual installation and use.

Disclosure of Invention

The invention provides a dimming method of an LED lamp, which is used for improving the irradiation uniformity of the LED lamp.

A dimming method of an LED lamp, comprising:

modeling in optical design software according to the design requirement of the LED lamp to obtain a simulated LED lamp;

calculating the distance between each LED module on the simulated LED lamp according to a distance calculation formula, and arranging each LED module on a non-plane according to the distance;

searching four-quadrant light distribution angles corresponding to the LED modules from a pre-stored optical database according to the illumination required by the LED lamp and the uniformity of the light spots, and dimming the LED lamp according to the four-quadrant light distribution angles;

wherein, four quadrant grading angle includes: the lens optical angle, the vertical arc angle of the light emergent surface of the lamp, the horizontal arc angle of the light emergent surface of the lamp and the vertical included angle between the installation lamp wall of the whole lamp and the projection ground.

Optionally, the method according to claim 1, wherein the distance between the LED modules is calculated as follows:

wherein dmax is the maximum distance between two point light sources, m is a constant, and z is the irradiation distance of the LED lamp.

Optionally, the method according to claim 1, wherein the optical database is pre-stored with simulation data of light intensities and light spots corresponding to different four-quadrant light distribution angles.

Optionally, the LED module is a single micro module with a lens packaged on the LED chip.

The invention provides a light distribution method, which can directly adjust the light spots and uniformity of a lamp through four-quadrant light distribution angles according to actual scene requirements, and can well control the risks of excessive development or mold waste while improving the irradiation uniformity of products. By adopting the LED module of the microminiature module, the LED module is flexible in assembly in terms of structure, changeable in structure, easy in module maintenance, and local in module damage, and the integral operation of the lamp is not affected.

Drawings

Fig. 1 is a schematic view of light output corresponding to a lens optical angle of 60 ° according to an embodiment of the present invention;

fig. 2 is a schematic view of light output of a lens with an optical angle of 120 ° and 50 ° superimposed according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an LED module according to an embodiment of the present invention;

FIG. 4 is a schematic view of a luminaire spot provided in the prior art;

fig. 5 is a schematic structural diagram of an LED lamp according to an embodiment of the present invention;

fig. 6 is a schematic view of a light spot of an LED lamp according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

Examples

The embodiment of the invention provides a design method of an LED lamp, which comprises the following steps:

s1, modeling in optical design software according to the design requirement of the LED lamp to obtain the simulated LED lamp.

S2, calculating the distance between the LED modules on the simulated LED lamp according to a distance calculation formula, and setting the LED modules on a non-plane according to the distance.

The calculation formula of the point spacing of the LED module is as follows:

wherein: dmax is the maximum distance between two point sources, m is a constant, and z is the illumination distance.

S3, searching four-quadrant light distribution angles corresponding to the LED modules from a pre-stored optical database according to the illumination required by the LED lamp and the uniformity of the light spots, and designing the LED lamp according to the four-quadrant light distribution angles.

Specifically, the four-quadrant light distribution angle includes: the lens optical angle, the vertical arc angle of the light emergent surface of the lamp, the horizontal arc angle of the light emergent surface of the lamp and the vertical included angle between the installation lamp wall of the whole lamp and the projection ground.

(1) Optical angle of lens

Because the LEDs are provided with different lenses, the angles of emitted light are different, namely the light spots irradiated on the ground surface are different, and even the same LED has different illumination values from the center to the edge under different light spots. The surface light spot can be adjusted by matching with different lenses, so that the uniformity of the surface illumination is better. Figures 1 and 2 below exemplify two alternative lenses, thousands of lenses being practical and self-designed.

(2) Vertical arc angle of light emergent surface of lamp and horizontal arc angle of light emergent surface of lamp

From traditional lamps and lanterns, the shape of lamps and lanterns itself has been fixed, can't better laminating on the installation face of different curvatures, uses the LED module to arrange lamps and lanterns on the face of arbitrary curvature in this embodiment, can satisfy different illumination demands.

(3) Vertical included angle between installation lamp arm of integral lamp and projection ground

In the lamp installation process, the angle of the lamp can be adjusted by using the installation support and the like, or in the sloping field irradiation process, the different angles of the lamp are adjusted, so that the illumination of the irradiation surface is equal to the illumination.

The LED module structure used in this embodiment is shown in fig. 3. The single LED module is provided with a heat conduction chimney penetrating through the periphery of the optical lens, and a plurality of heat dissipation fins are arranged at the bottom of the module. According to the LED module, the longitudinal direction is firstly used, then the transverse direction is used, a longitudinal hollow shape and a chimney made of the same material are established on the diagonal line of the transverse heat conduction path, so that the transverse heat conduction path is instantaneously turned to the chimney wall, the longitudinal speed is increased, the transverse heat conduction speed is increased, and normally, LED particles are welded on an aluminum substrate, so that the LED module is the most basic transverse heat dissipation. According to the mode, the LED lamp with heat dissipation efficiency can be considered, the sectional area is greatly reduced, and fewer materials are applied to accelerate heat conduction. The mechanism part of the invention is easy to be applied in a humid environment, and the volume of waterproof inside the lamp is reduced after the mechanism part is miniaturized, so that the pressure intensity can be increased. Has better efficiency for the invasion of water and moisture.

Further, the module can be regarded as a miniaturized module system for outdoor use, the LED module has LED light source building blocks with one side emitting light, no light design is made in one plane, and the LED module can be regarded as a huge product series. Each appearance is similar, but has a large number of different parameters and specifications, and can face different application scenes or required illumination and uniformity.

In addition, the LED module can realize the numerical value exceeding IP70 of the dustproof and waterproof coefficient, so that the traditional outdoor lighting lamp shell can be completely free of the design of the dustproof and waterproof coefficient, nonmetallic materials, hollowed-out appearance designs and the like, the shell materials and the manufacturing process of the lamp are selectively increased, and more space is reserved for the selection of the appearance light-emitting surface.

In this embodiment, when designing an LED lamp, as a description of initial design of the product, the LED module retains the point light source characteristics of the LED chip package particles and the lens, uses a single micro-module as an integrated light source to concentrate light quality, and installs each micro-module on four angular light-emitting surfaces of non-planar light-emitting defined in this embodiment, where the non-planar light can be regarded as an infinite curved surface.

The following is illustrated: each LED module may have a set of independent IES optical simulation data using different lenses, using different sizes of LED chips, such as: 2016 Different light intensity data are also generated for the 2835, 3030, 3535, 5050, 7575 size models. This data can be easily used in a developed general database, in combination with three other quadrant angles, including: the vertical included angle and the horizontal included angle between the central axis of the light emitting angle of the single module and the projected object are two quadrant angles, and the vertical included angle between the lamp and the mounting bracket or the lamp wall is a third quadrant angle. By utilizing the four parameters, the simulation data of the light intensity and the light spot can be more accurately corresponding, the applicable range and scene of the lamp can be known in advance before the lamp is not produced in quantity, the light spot and uniformity of the lamp can be directly adjusted according to the actual scene requirement very easily, the appearance, the volume, the electrical parameters and the like of the lamp do not need to be redesigned, and the risk of excessive development or mold waste is very well controlled.

Fig. 4 shows that the uniformity of a high-pole lamp in a high-speed parking lot is only 0.29 and the light spot is obvious after measurement and DIALUX optical simulation by using a DIALUX (light illumination design software) and an IES optical database in the prior art.

For example, referring to fig. 5, the LED lamp designed in the embodiment is a modeling layout lamp, 3 LED modules are used in total and fixed on the disc, the light spots on the ground are circular through ray tracing, the uniformity is also greatly increased, the level reaches 0.43, and the light spot diagram is shown in fig. 6.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A dimming method of an LED lamp, comprising:

2. The method of claim 1, wherein the distance between the LED modules is calculated as follows:

3. The method of claim 1, wherein the optical database is pre-stored with simulation data of light intensity and light spot corresponding to different four-quadrant light distribution angles.

4. The method of claim 1, wherein the LED module is a single miniature module with a lens packaged on an LED chip.