Reflected Light Projection Device Using Rotating Reflector Cup
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Solution Overview
Problem
Existing atmosphere projection lamps are not portable, small, energy-efficient, environmentally friendly, cost-effective, and multi-functional, failing to meet the growing demand for compact, low-power, and versatile lighting solutions for home use.
Innovation Solution
A reflected light projection device comprising a projection light source assembly, a rotatable reflector cup, and a dust-proof light-transmitting sheet, where the light source assembly, reflector cup, and light-transmitting sheet are sequentially stacked and driven by a motor, allowing light to be reflected and projected onto a surface, creating patterns like water ripples or clouds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If optical transmission principle is used with transparent interference wheels, then projection effect is achieved, but device complexity and size increase
Solution Approach 1:
The patent inverts the conventional optical transmission approach by using reflection instead of transmission. A rotating reflector with patterned reflective surfaces redirects light from LEDs to create projection patterns, eliminating the need for transparent interference wheels and achieving the same visual effect with simpler components
Solution Approach 2:
The patent replaces complex mechanical optical systems (transparent wheels with precise patterning) with a simpler rotating reflector mechanism. The reflector uses geometrically arranged reflective planes that can be manufactured more simply and assembled more easily than multi-layer transparent interference wheels
2Illumination intensity
If high-power LEDs are used for illumination, then projection brightness is improved, but energy consumption increases
Solution Approach 1:
The rotating reflector continuously redirects light from the LEDs across the projection surface, ensuring that the light output is constantly utilized. This continuous action maximizes the effectiveness of the LED illumination, allowing lower power LEDs to achieve sufficient brightness through optimized light distribution
Solution Approach 2:
The patent changes the optical parameters by using multiple reflective planes at different angles to redirect light in specific patterns. This geometric optimization of light paths improves illumination efficiency, allowing the system to achieve desired brightness levels with lower power consumption
3Illumination intensity
If multiple components are stacked for projection function, then projection capability is achieved, but portability is reduced
Solution Approach 1:
The patent merges the light source, reflector, and projection surface into a compact stacked arrangement on a single board. This integration reduces the overall device size and weight compared to traditional separate component configurations, improving portability while maintaining projection functionality
Solution Approach 2:
The patent uses a nested structure where the reflector cup is positioned within the housing, and the light source assembly is integrated within the reflector structure. This nesting arrangement minimizes the device footprint and weight, making the projector more portable
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 device provides a compact, energy-efficient, and cost-effective solution for creating atmospheric patterns, enhancing user experience with its ability to project dynamic and romantic scenes, improving light source utilization and aesthetic appeal.
Implementation Method 1
a light emitted by the projection light source assembly
Implementation Method 2
the light is reflected by the reflector cup and then projected to a surface of an external medium
Implementation Method 3
a motor configured to drive the reflector cup to rotate
Implementation Method 4
the dust-proof light-transmitting sheet is provided with a striped uneven surface; a light emitted by the projection light source assembly directly irradiates the reflector cup and then is projected to a surface of an external medium through the dust-proof light-transmitting sheet
Data Source
AI summary
A reflected light projection device is provided, comprising a projection light source assembly, a light source fixing plate for fixing the projection light source assembly, a rotatable reflector cup, a dust-proof light-transmitting sheet, and a motor driving the reflector cup to rotate. The dust-proof light-transmitting sheet, the reflector cup, the light source fixing plate, and the projection light source assembly are sequentially stacked and arranged on the motor, and the projection light source assembly, the light source fixing plate, and the reflector cup are respectively provided with a first opening, a second opening, and a third opening through which the motor passes, and a light emitted by the projection light source assembly directly irradiates the reflector cup that rotates under a drive of the motor, and the light is reflected by the reflector cup and then projected to a surface of an external medium through the dust-proof light-transmitting sheet.