Theater Headlight With Hexagonal LED Array And Passive Light Guides
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Solution Overview
Problem
Conventional headlights for film, studio, stage, event, and theater environments often fail to provide a balanced light output with a wide adjustment range, homogeneous light distribution, and the ability to switch between hard and soft light settings efficiently, while also requiring continuous operation and effective heat management.
Innovation Solution
A headlight design featuring a reflector arrangement with passive light guides and an electrically operated light source arrangement outside the reflector room, utilizing LEDs of different colors arranged in a hexagonal pattern, a primary lens arrangement for light control, and fluid cooling for heat dissipation, along with a lens arrangement to enhance beam angle and light homogeneity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light sources are used in headlights, then sufficient light output can be achieved, but heat management becomes difficult and continuous operation is compromised
Solution Approach 1:
The patent replaces conventional mechanical light sources (incandescent bulbs, halogen lamps) with LED technology. This substitution fundamentally changes the heat generation characteristics while maintaining sufficient light output, enabling continuous operation without compromising heat management
Solution Approach 2:
The invention changes the operational parameters of the light source by using multiple LEDs that can be independently controlled. This allows for variable light output levels and efficient heat distribution across multiple light-emitting elements, solving the contradiction between high light output and heat management
2Device complexity
If a single light source is used, then the device structure is simple, but the ability to switch between hard and soft light settings and provide homogeneous light distribution is limited
Solution Approach 1:
The patent divides the light source into multiple independent LED elements arranged in specific patterns (linear, triangular, rectangular). Each LED can be independently controlled to produce different light characteristics, enabling seamless transitions between hard and soft light settings while maintaining relatively simple device structure
Solution Approach 2:
The invention applies different optical properties to different regions by using multiple LEDs with potentially different color temperatures and intensities. Combined with optical elements like diffusers and reflectors, this creates localized light quality variations that can be combined to produce homogeneous overall light distribution while maintaining versatility
3Device complexity
If the beam angle is fixed, then the optical system is simple, but the wide adjustment range between spot and flood settings cannot be achieved
Solution Approach 1:
The patent incorporates adjustable optical elements such as movable reflectors, rotatable lens arrays, or programmable LED activation patterns that dynamically change the beam angle. This allows the headlight to transition between narrow spot beams and wide flood beams while keeping the base optical system relatively simple
Solution Approach 2:
The invention designs the optical system to perform multiple functions using the same components. For example, a single set of optical elements can focus light for spot settings or spread light for flood settings by changing activation patterns or physical orientation, achieving wide adjustment range without proportionally increasing device complexity
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 solution provides a versatile light source capable of continuous operation with efficient heat management, offering a wide adjustment range and seamless transitions between hard and soft light settings, ensuring high light output and uniformity.
Implementation Method 1
an electrically operated light source arrangement having a carrier on the front of which first LEDs of a first color and second LEDs of a second color are mounted, each of which is configured to generate light
Implementation Method 2
a number of passive light guides having feed points arranged outside the reflector interior and light output points arranged inside the reflector interior
Implementation Method 3
a reflector assembly having a reflective inner surface defining a reflector interior
Implementation Method 4
fluid cooling for heat dissipation
Implementation Method 5
fluid cooling for heat dissipation
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A spotlight (1) for illuminating a film, studio, stage, event and/or theater environment is described. The spotlight (1) comprises a reflector assembly (11) with a reflective inner surface (113) that defines a reflector interior (114), a number of passive light guides (12) with feed points (121) arranged outside the reflector interior (114) and with light output points (122) arranged inside the reflector interior (114); and an electrically operated light source assembly (13) arranged outside the reflector interior (114). The light source arrangement (13) has a carrier (139) on the front side (1391) of which first LEDs of a first color (1311) and second LEDs of a second color (1312) are mounted, each designed to generate light and feed it into the feed points (121) of the passive light guides (12).The front side (1391) has a structural pattern formed from a multitude of equally sized and adjacent hexagonal cells, and each LED of the first and second LEDs (131) is arranged in a separate hexagonal cell.