Integrated Light Collecting Rod for Projection Systems
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Solution Overview
Problem
Conventional light collecting devices for projection systems are difficult to manufacture, suffer from light loss due to poor couplings, and lack flexibility for multi-light source applications, while also requiring additional optical components to meet specific aspect ratios and reduce size.
Innovation Solution
A light collecting device with a simplified structure comprising a single light collecting rod with integrated incident and emergent surfaces and reflective surfaces, allowing for efficient light beam integration from multiple sources, reducing light loss, and accommodating various aspect ratios, which can be easily manufactured and integrated with multiple light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light collecting rods are used to integrate light beams from multiple light sources, then light integration and uniformity are improved, but manufacturing difficulty increases due to complex joining requirements
Solution Approach 1:
The patent merges multiple light collecting rods into a single integrated light collecting rod that can accommodate multiple light sources. This eliminates the need to join multiple separate rods, thereby maintaining light integration capabilities while significantly reducing manufacturing complexity and improving ease of production.
Solution Approach 2:
The single light collecting rod is designed with multi-functional capabilities to handle light beams from multiple different light sources simultaneously. It incorporates multiple incident surfaces and reflecting surfaces within one structure, allowing it to perform the functions of multiple separate rods while simplifying the overall system.
2Illumination intensity
If multiple light collecting rods are used to collect light from multiple sources, then light beam integration is improved, but light loss increases due to poor couplings between rods
Solution Approach 1:
By combining multiple light collecting rods into a single continuous rod structure, the patent eliminates the coupling interfaces between separate rods. This removes the sources of light loss at junctions while maintaining the ability to integrate light beams from multiple sources through the unified structure.
3Illumination intensity
If conventional light collecting device structure is used, then light beams can be integrated, but device complexity increases making it difficult to manufacture
Solution Approach 1:
The patent simplifies the device structure by merging multiple separate light collecting rods into one integrated rod. This reduces the number of components from three or more separate rods to a single rod with multiple incident and reflecting surfaces, thereby reducing structural complexity while maintaining light integration functionality.
4Measurement precision
If additional optical components are added to meet aspect ratio requirements, then projection precision is improved, but device complexity and light loss increase
Solution Approach 1:
The light collecting rod is designed with multi-functional surfaces that simultaneously achieve light integration and aspect ratio adjustment. The reflecting surfaces are configured to not only collect and integrate light but also to project light beams with the required aspect ratios directly, eliminating the need for additional optical 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 solution enhances light coupling efficiency, reduces manufacturing complexity, and allows for flexible use in multi-light source projection systems while meeting aspect ratio requirements, thereby improving brightness and reducing the overall size of the projection apparatus.
Implementation Method 1
a second light beam is adapted to enter the body of the first light collecting rod and be reflected by the first reflecting surface of the incident end
Data Source
AI summary
A light collecting device adapted for a projection apparatus is provided. The light collecting device at least comprises a light collecting rod that has a body, a longitudinal direction, an incident end, and an emergent end. The incident end comprises an incident surface and a reflecting surface, in which the incident surface is adjacent to the reflecting surface to form an included angle therebetween. The emergent end is opposite to the incident end. Thus, a first light beam passes through the incident surface of the incident end and travels along the body of the light collecting rod towards the emergent end along the longitudinal direction when a second light beam enters into the body of the light collecting rod. The second light beam is reflected by the reflecting surface of the incident end towards the emergent end along the longitudinal direction.