CN-121498006-B - Energy-saving LED module optical system with adjustable lens

CN121498006BCN 121498006 BCN121498006 BCN 121498006BCN-121498006-B

Abstract

The invention provides an energy-saving LED module optical system with an adjustable lens, and relates to the technical field of illumination optics. And the adjustable lens group is used for zooming and shaping the primary light beam and outputting an intermediate light beam. According to the energy-saving LED module optical system of the adjustable lens, through combining the electrowetting liquid lens array and the collimation microstructure element, continuous zooming and precise shaping of light beams can be realized, and the optical adjustment flexibility and precision of the system are greatly improved. The system can dynamically adjust the balance of luminous flux and power consumption according to different lighting requirements, and can realize energy-saving effect while optimizing the light efficiency. By integrating the illuminance sensor and the feedback regulation mechanism, the system can monitor the illumination parameters in real time, and ensure stable and efficient illumination effect.

Inventors

LIU HUAN
ZHOU CONGGANG

Assignees

安徽三匹马半导体有限公司

Dates

Publication Date: 20260512
Application Date: 20251119

Claims (9)

1. An energy-saving LED module optical system with an adjustable lens, comprising: The LED array outputs stable primary light beams and is powered by the constant current driver; The adjustable lens group is used for zooming and shaping the primary light beam and outputting an intermediate light beam, the adjustable lens group is composed of an electrowetting liquid lens array and a collimation microstructure element, the zooming is continuously adjusted through the electrowetting liquid lens array, and the collimation is carried out by adopting the collimation microstructure element for collimation correction; An illuminance sensor that detects an illumination parameter of an illumination area of the intermediate beam and generates a feedback signal; the data acquisition and recording unit acquires and stores the running states of the constant current driver, the electrowetting liquid lens array and the illuminance sensor to generate running parameters; The memory stores a preset target light distribution curve; the controller constructs a light flux and power consumption double-target optimization model according to the target light distribution curve and the feedback signal, and the light flux and power consumption double-target optimization model converges the intermediate light beam into an optimized light beam; The blanking component is used for absorbing and shielding high-angle scattering components in the optimized light beam and outputting a terminal light beam, the blanking component is of a composite integrated structure, the composite integrated structure comprises a nanopore array blanking film and a honeycomb blackening barrier, the absorption adopts the nanopore array to selectively absorb, and the shielding adopts the honeycomb blackening barrier to shield residual overflowed light; And the output port projects the terminal light beam to a target illumination area and returns the operation parameters to the controller.
2. The lens-tunable energy-saving LED module optical system of claim 1, wherein the constant current driver includes a temperature compensation module that reduces the driving current when the ambient temperature increases and increases the driving current when the ambient temperature decreases.
3. The energy-saving LED module optical system with the adjustable lens according to claim 1, wherein the electrowetting liquid lens array performs zoom adjustment on the primary light beam by changing the curvature of a liquid interface, and the collimating microstructure element performs collimation and shaping on the light beam after zoom adjustment and outputs the intermediate light beam.
4. The energy-saving LED module optical system with adjustable lens as set forth in claim 3, wherein the liquid interface curvature adjustment range of the electrowetting liquid lens array is 0.01 -0.10 The collimating microstructure element is composed of a plurality of sections of refraction units, and the angle difference of the light emergent surfaces of the sections of refraction units relative to the optical axis is less than 2 degrees.
5. The energy-saving LED module optical system with the adjustable lens as claimed in claim 1, wherein the detection range of the illuminance sensor is 1 lux-50000 lux, and the detection precision is more than or equal to +/-2%.
6. The lens-tunable energy-saving LED module optical system of claim 1, wherein the operating parameters include a current parameter, a curvature parameter, and an illuminance parameter.
7. The energy-saving LED module optical system of the adjustable lens of claim 1, wherein the light flux and power consumption dual-objective optimization model is constructed by adopting a weighted normalization function, and the objective function of the weighted normalization function is as follows: , Wherein, the In order to optimize the function of the objective, For the real-time luminous flux of the system, For a target luminous flux, P is the system real-time power consumption, For the reference power consumption to be referred to, As the light-passing weight coefficient, Is a power consumption weight coefficient.
8. The energy-saving LED module optical system of the adjustable lens of claim 1, wherein the aperture range of the nanopore array blanking film is 50nm-200nm, the film thickness range is 100nm-500nm, the unit aperture of the honeycomb blackening barrier is 1mm-3mm, and the thickness is 10mm-20mm.
9. The lens-tunable energy-saving LED module optical system of claim 1, wherein the backhaul is a wireless communication interface and the operating parameters are time stamped.

Description

Energy-saving LED module optical system with adjustable lens Technical Field The invention relates to the technical field of illumination optics, in particular to an energy-saving LED module optical system with an adjustable lens. Background The LED light source gradually replaces the traditional light source due to high energy efficiency and long service life, and becomes the main stream of road illumination, indoor illumination and stage lighting. In order to realize light distribution control, the existing LED module is usually used together with an optical lens. The lens is made of optical plastic or glass materials, and refraction or reflection light distribution is realized based on non-imaging optical design. Different scenes have different requirements on light distribution, such as road illumination emphasizes illumination uniformity, indoor illumination emphasizes emphasis, and stage illumination needs light spots to be variable. In order to meet application differences, the existing scheme is mostly adjusted by fixing lenses or replacing lens components, and partial products adopt multi-section refraction or free-form surface design, so that different lighting requirements can be met to a certain extent. The existing lens system has the core defects of limited adjustment mode and insufficient flexibility. Most lens structures are fixed, different light distribution can be realized only by replacing components or changing module arrangement, and the operation is complex and the cost is high. Although the few adjustable lenses can change the angle of the light beam, the adjustable lenses depend on mechanical sliding or rotation, have complicated structures, poor stability, inconvenient maintenance and increased energy consumption. Making it difficult for the prior art to balance energy savings with diversified lighting needs. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an energy-saving LED module optical system with an adjustable lens, which aims to solve the technical problems of realizing accurate zooming and shaping of light beams, optimizing balance of light flux and power consumption, improving light efficiency and realizing energy saving by combining an electrowetting liquid lens array and a collimation microstructure element. The energy-saving LED module optical system with the adjustable lens comprises an LED array, wherein the LED array outputs stable primary light beams, and the LED array is powered by a constant current driver. The adjustable lens group is used for zooming and shaping the primary light beam and outputting an intermediate light beam, the adjustable lens group is composed of an electrowetting liquid lens array and a collimation microstructure element, the zooming is continuously adjusted through the electrowetting liquid lens array, and the collimation is corrected by adopting the collimation microstructure element. And the illumination sensor detects illumination parameters of an illumination area of the intermediate beam and generates a feedback signal. And the data acquisition and recording unit is used for acquiring and storing the running states of the constant current driver, the electrowetting liquid lens array and the illuminance sensor to generate running parameters. And the memory is used for storing a preset target light distribution curve. And the controller constructs a light flux and power consumption double-target optimization model according to the target light distribution curve and the feedback signal, and the light flux and power consumption double-target optimization model converges the intermediate light beam into an optimized light beam. The blanking component is used for absorbing and shielding high-angle scattering components in the optimized light beam and outputting a terminal light beam, the blanking component is of a composite integrated structure, the composite integrated structure comprises a nanopore array blanking film and a honeycomb blackening barrier, the nanopore array is used for selective absorption in absorption, and the honeycomb blackening barrier is used for shielding residual scattered light so as to reduce glare and improve effective light efficiency. And the output port projects the terminal beam to a target illumination area, and the output port transmits the operation parameters back to the controller for updating a subsequent scene template and energy-saving operation. Preferably, the constant current driver includes a temperature compensation module that reduces a driving current when an ambient temperature increases, and increases the driving current when the ambient temperature decreases, so as to keep a light flux output of the primary beam stable. Preferably, the electrowetting liquid lens array performs zoom adjustment on the primary light beam by changing the curvature of a liquid interface, and the collimating microstructure element performs collimation and shaping on the lig