LED Projector with Rotating Plano-Convex Lens Carousel
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Solution Overview
Problem
Existing decorative lighting technologies, primarily based on incandescent bulbs, face issues with high energy consumption, short lifespan, and heat generation, limiting their effectiveness and versatility in projecting dynamic and decorative patterns.
Innovation Solution
An LED light projector with six interchangeable image frames and a rotating carousel of lenses, featuring a motorized system with a focal assembly and LED circuit board, which uses a combination of plano-convex and plano-concave lenses to create a unique kaleidoscopic pattern, while incorporating an integral exhaust fan for heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If incandescent bulbs are used to achieve brightness, then illumination intensity is improved, but energy consumption increases and lifespan decreases
Solution Approach 1:
The patent changes the fundamental parameter of the light source from incandescent to LED technology. This parameter change enables achieving the required illumination intensity while dramatically reducing energy consumption and extending lifespan, as LEDs are inherently more energy-efficient and have longer operational life compared to incandescent bulbs
2Illumination intensity
If incandescent bulbs are used to achieve brightness, then illumination intensity is improved, but the device generates excessive heat
Solution Approach 1:
The patent changes the light source parameter from incandescent to LED, which fundamentally alters the thermal characteristics. LEDs generate significantly less heat compared to incandescent bulbs for the same illumination output, thus resolving the heat generation issue while maintaining brightness
Solution Approach 2:
The patent extracts and removes the heat generation problem by using LED technology that inherently produces less heat. Additionally, the design separates the light-generating function from heat-generating function, allowing for better thermal management in the projection device
3Adaptability or versatility
If multiple lenses and interchangeable frames are added, then adaptability and pattern variety are improved, but device complexity increases
Solution Approach 1:
The patent segments the projection system into modular components: a fixed focal assembly with concave lenses, a rotatable carousel with convex lenses, and interchangeable image frames. This segmentation allows each component to perform a specific function while enabling versatile pattern creation through their coordinated operation, managing complexity through functional decomposition
Solution Approach 2:
The patent introduces dynamic elements including a rotatable carousel that cycles through multiple convex lenses and interchangeable image frames that can be swapped. These dynamic features enable pattern variety and adaptability without requiring a completely different device for each pattern, managing complexity through reusable moving components
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 LED light projector achieves energy-efficient, long-lasting decorative lighting with dynamic and scalable patterns, enhancing design flexibility and reducing heat-related issues through the use of interchangeable frames and a cooling system.
Implementation Method 1
A focal assembly is mounted on the motor overtop the LED circuit board and it too includes M of windows each having a plano-concave lens mounted therein for collimating the plurality of diffuse light beams
Implementation Method 2
The projection carousel comprises a disk with a plurality N of windows each having a plano-convex lens mounted therein
Data Source
AI summary
An LED light projector comprising a housing, a motor seated in the housing, and a projection carousel mounted distally on the motor and configured to rotate therewith in the housing. The projection carousel comprises a disk with a plurality of windows each having a plano-convex lens mounted therein. In addition, an LED circuit board is mounted on the motor, the LED circuit board including a number of LEDs for emitting a plurality of light beams. A focal assembly is mounted on the motor overtop the LED circuit board and it too includes windows each having a plano-concave lens for collimating the light beams. A partition is mounted in the housing adjacent (outside) the focal assembly and projection carousel, and it includes windows each having a removable image slide for passing the light beams and projecting an image thereon. The projected images result in a unique kaleidoscopic pattern.