LED Illumination With Replaceable Optics for Beam Control
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Solution Overview
Problem
Existing illumination apparatuses face challenges in achieving different lighting effects without reducing energy efficiency and are susceptible to environmental influences such as moisture, dust, and temperature fluctuations.
Innovation Solution
An illumination apparatus with a transparent and resistant protective screen and replaceable light shaping devices, including soft optic and spot optic devices, allows for adjustable half-scatter angles and environmental protection, using multi-lens optical systems with controllable actuators to maintain efficiency and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LED panel lights use a diffuse cover lens to provide soft light with a large half-scatter angle, then the lighting effect is soft and homogeneous, but the energy efficiency is reduced when attempting to reduce the half-scatter angle
Solution Approach 1:
The illumination apparatus divides the emission surface into multiple independently controllable LED groups, each capable of emitting light with different half-scatter angles. This segmentation allows selective activation of specific LED groups based on the desired lighting effect, avoiding the energy loss associated with using optical elements to modify the beam angle of a unified light source.
Solution Approach 2:
The system dynamically switches between different LED groups with different radiation characteristics based on the required half-scatter angle. By dynamically selecting which LED groups to activate, the system adapts to different lighting requirements without the energy efficiency penalties of using diffusers or prismatic plates to change beam angles.
2Adaptability or versatility
If accessories like diffuser disks or softboxes are used to extend the half-scatter angle of narrow beam LED groups, then the beam characteristics are changed to provide soft light, but the energy efficiency is significantly reduced
Solution Approach 1:
Instead of using optical accessories to modify the beam angle of narrow beam LEDs (which causes energy loss), the invention inverts the approach by directly selecting LED groups that inherently emit light at the desired half-scatter angle. This eliminates the need for energy-absorbing diffusers and softboxes while achieving the same beam angle adjustment effect.
Solution Approach 2:
The system changes the radiation characteristic parameter (half-scatter angle) by switching between LED groups with different inherent emission patterns rather than using optical elements to modify the beam. This parameter change approach maintains energy efficiency while providing adaptability in beam angle control.
3Illumination intensity
If LED clusters with small half-scatter angle are used to create spotlights at medium to long distances, then the light intensity is concentrated, but the light flows around illuminated objects at shorter distances creating multiple shadows
Solution Approach 1:
The system dynamically selects between LED groups with different half-scatter angles based on the distance to the illuminated object. For close-range illumination, LED groups with larger half-scatter angles are activated to prevent light from flowing around objects and creating multiple shadows. For medium to long distances, LED groups with smaller half-scatter angles are used to concentrate light intensity.
Solution Approach 2:
The illumination apparatus changes the effective half-scatter angle parameter by switching between different LED groups, optimizing the lighting effect for different distances without requiring physical adjustment of the light source or addition of optical modifiers.
4Power
If prismatic plates are used to reduce the half-scatter angle from 120 degrees to 60 degrees, then the luminous intensity is increased, but the energy efficiency is significantly reduced
Solution Approach 1:
The emission surface is segmented into LED groups with different inherent half-scatter angles. By selecting and activating specific LED groups, the system achieves the desired luminous intensity without using prismatic plates that cause energy loss. The segmentation allows direct utilization of LED groups that naturally emit light at the required angle.
Solution Approach 2:
The system achieves parameter change in half-scatter angle by switching between LED groups with different radiation characteristics rather than using optical elements like prismatic plates. This maintains energy efficiency while achieving the desired luminous intensity and beam angle.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus achieves varied lighting effects with adjustable half-scatter angles while maintaining energy efficiency and resisting environmental factors, offering high flexibility and robustness.
Implementation Method 1
LED light generating device (2) comprising groups of LEDs spatially distributed on an emission surface for the generation of light
Implementation Method 2
spot optic device (3B) comprising a two-dimensional field of multi-lens optical systems (9)
Data Source
AI summary
Aspects and embodiments disclosed herein include an illumination apparatus comprising an LED light generating device comprising groups of LEDs spatially distributed on an emission surface for the generation of light, the generated light being emitted from the emission surface of the LED light generating device through a transparent and resistant protective screen of the LED light generating device, and comprising a replaceable light shaping device mounted in front of the transparent protective screen of the LED light generating device for shaping the light emitted from the emission surface of the LED light generating device.