Star Field Projection Apparatus Using Laser and LED Optical Pathways
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing projection technologies fail to effectively create a realistic moving star field and deep blue cloud-like effect in planetarium and architectural lighting applications, lacking the dynamic and immersive visual experience provided by coherent and non-coherent light sources combined with advanced optical elements.
Innovation Solution
A projection apparatus utilizing a monochromatic laser as a coherent light source and light emitting diodes (LEDs) with an interferential filter wheel and diffractive optical elements, along with motors to create a moving star field and deep blue cloud-like effect, employing a power supply and regulation system to control the operation of light sources and motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional projection apparatuses use simple light sources and basic optical elements, then the device complexity is low, but the ability to create realistic moving star field and deep blue cloud-like effect is insufficient
Solution Approach 1:
The patent combines multiple light sources (laser and LED) with different optical characteristics, along with various optical elements (diffractive optical elements, grating wheel, interferential filter wheel) to create a unified projection system that achieves both moving star field and cloud-like effects simultaneously
Solution Approach 2:
The system uses composite optical pathways where coherent laser light and incoherent LED light are combined and processed through different optical elements to produce distinct visual effects (star field from laser, cloud effect from LED) within the same projection apparatus
2Adaptability or versatility
If the patent uses multiple light sources and advanced optical elements to create moving star field and cloud-like effect, then the visual effect capability is improved, but the device complexity increases
Solution Approach 1:
The projection apparatus is divided into distinct functional modules: a first optical pathway for the laser-based moving star field effect, and a second optical pathway for the LED-based cloud-like effect, allowing independent optimization and control of each effect
Solution Approach 2:
The projection apparatus is designed to produce multiple visual effects (moving star field and deep blue cloud-like effect) using a single integrated system that shares common components such as the projection lens and housing, reducing overall system complexity despite the multiple functions
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 generates a realistic and dynamic moving star field with a deep blue cloud-like effect, enhancing the visual experience in planetarium and architectural lighting applications by combining coherent and non-coherent light sources with advanced optical elements and motor-controlled optical wheels.
Implementation Method 1
The light from the laser passes through the diffractive optical elements and the grating wheel as the second motor rotates the grating wheel to create a moving star field effect
Implementation Method 2
a grating wheel, two diffractive optical elements and a second motor. The diffractive optical elements are between the grating wheel and the lasers. The light from the laser passes through the diffractive optical elements and the grating wheel
Implementation Method 3
The interferential wheel is between the inner and outer condenser lenses. The light from the LED passes through the lenses and the interferential wheel. The first motor rotates the interferential filter wheel and this gives an effect of a slowly moving deep blue cloud
Data Source
AI summary
A projection apparatus for generating a moving star field and a cloud-like effect comprises a means for generating a cloud-like effect using at least one non-coherent light source, a means for generating a moving star field using at least one coherent light source and a means for regulating and supplying electric power. The means for generating cloud-like effect using at least one non-coherent light source comprises at least one pair of condenser lenses and an interferential filter wheel rotated by a motor, disposed between at least one pair of condenser lenses. The means for generating the moving star field using a coherent light source comprises a grating wheel rotated by a motor and a diffractive optical element disposed between the at least one coherent light source and the grating wheel.