Lighting Fixture Shutter Blade Beam Control
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Solution Overview
Problem
Conventional lighting fixtures using LEDs often face challenges in achieving uniform and efficient light mixing and beam control, particularly in applications requiring precise light manipulation such as live performances and studio productions.
Innovation Solution
The lighting fixture incorporates a tapered reflector, a tandem lens array, a shutter blade system, and a condenser with aspheric lenses, which work together to enhance light mixing and beam control by directing and shaping light emitted from an array of LEDs, allowing for adjustable beam angles and uniform light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional lighting fixtures use simple LED arrays without advanced optical components, then the device complexity is reduced, but light mixing uniformity and beam control precision deteriorate
Solution Approach 1:
The optical system is segmented into multiple functional components: tapered reflector for initial light distribution, tandem lens array for beam shaping, shutter blade for precise control, and condenser for light concentration. Each segment performs a specific function to achieve overall uniform light mixing and precise beam control.
Solution Approach 2:
The optical components are nested within the housing in a compact arrangement where the tapered reflector surrounds the LED array, the tandem lens array is positioned within the reflected light path, the shutter blade is integrated within the lens array structure, and the condenser is nested at the focal point, maximizing space utilization while maintaining optical performance.
2Adaptability or versatility
If conventional lighting fixtures use fixed beam angles without adjustable components, then the device complexity is reduced, but adaptability to different applications deteriorates
Solution Approach 1:
The shutter blade is designed to be rotatable about the optical axis, allowing dynamic adjustment of beam angle and shape. The blade can be positioned at different angular orientations to create various beam patterns (spot, flood, accent) while maintaining a compact fixed housing structure.
Solution Approach 2:
The tandem lens array is designed with dual functionality: it serves as both a beam shaping element and a mounting structure for the shutter blade. The same optical components enable multiple lighting functions (spotlight, floodlight, accent lighting) through different shutter blade positions, eliminating the need for separate fixtures for different applications.
3Manufacturing precision
If conventional lighting fixtures use single lens elements, then the device complexity is reduced, but beam control precision and light mixing uniformity deteriorate
Solution Approach 1:
The lens system is divided into multiple lens elements arranged in a tandem configuration. Each lens element contributes to specific aspects of beam control: the first lens element handles initial beam shaping, while the second lens element refines the beam profile and focuses light through the shutter blade, achieving precise control through distributed optical functions.
Solution Approach 2:
The optical system uses composite optical design combining different lens types (convex, concave, aspheric elements) and materials with varying refractive indices to achieve precise beam control. The combination of lens elements creates synergistic optical effects that improve beam precision beyond what single elements could achieve.
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
This configuration results in improved light mixing and beam control, enabling more uniform and versatile lighting solutions suitable for various performance and studio applications, with the ability to adjust the light shape and angle effectively.
Implementation Method 1
The reflector has an input end positioned along the optical axis between the light source and the outlet of the housing. The reflector also has an output end positioned along the optical axis between the input end and the outlet of the housing. The light source emits light through the reflector from the input end through the output end.
Implementation Method 2
The tandem lens array is positioned along the optical axis between the output end of the reflector and the outlet of the housing.
Implementation Method 3
The condenser is positioned along the optical axis between the shutter blade and the outlet of the housing. The condenser includes a lens. In some embodiments, the lens includes an aspheric lens.
Data Source
AI summary
A lighting fixture includes a housing, light source, reflector, tandem lens array, shutter blade, and condenser. The housing includes an outlet. An optical axis extends centrally through the outlet. The light source includes an array of light-emitting diodes. The reflector has an input end positioned along the optical axis between the light source and the outlet. The reflector has an output end positioned along the optical axis between the input end and the outlet. The light source emits light from the input end through the output end. The tandem lens array is positioned along the optical axis between the output end and the outlet. The shutter blade is positioned along the optical axis between the tandem lens array and the outlet. The shutter blade is disposed at least partially within the housing. The condenser, including a lens, is positioned along the optical axis between the shutter blade and the outlet.