Light Integrating System With Misaligned Sources And Triangular Prism
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Solution Overview
Problem
In projection apparatuses, the alignment of two light sources can lead to damage due to direct light emission between them, reducing their lifespan and affecting image uniformity.
Innovation Solution
A light integrating system comprising an integrator rod and a triangular prism, where the two light sources are misaligned with each other, with the triangular prism adjacent to the integrator rod, allowing light from both sources to be integrated efficiently without direct interference, and a light splitting system to form a coherent light beam for image projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two light sources are aligned with the integrator rod, then light integration is achieved, but the light sources emit light to each other causing damage and reduced lifespan
Solution Approach 1:
The patent introduces a triangular prism component that redirects light from the second light source through a different spatial path. Instead of direct alignment with the integrator rod, the second light source is positioned offset and uses the prism's reflection surface to redirect light at a different angle, thereby preventing direct light exposure between sources while maintaining integration functionality.
Solution Approach 2:
The triangular prism acts as an intermediary component between the second light source and the integrator rod. It receives light from the second source, reflects it through its inclined surface, and directs it into the integrator rod, thereby mediating the light path to avoid direct emission between light sources while achieving the desired light integration effect.
2Reliability
If two light sources are misaligned, then direct light emission between sources is prevented, but light integration efficiency may be reduced
Solution Approach 1:
The triangular prism serves as a mediating optical element that captures light from the misaligned second light source and redirects it into the integrator rod. The prism's geometry and positioning ensure that despite the misalignment, light from both sources is effectively integrated into the same optical path, maintaining integration efficiency while preventing harmful direct emission between sources.
Solution Approach 2:
The patent uses dimensional redirection by positioning the second light source in a different spatial location and using the triangular prism to change the light's propagation direction. This dimensional approach allows light from misaligned sources to be convered into the same integration path, maintaining productivity while improving reliability.
3Ease of operation
If a triangular prism is added to the system, then light path control is improved, but device complexity increases
Solution Approach 1:
The triangular prism performs multiple functions simultaneously: it redirects light from the second source, defines the light entry angle into the integrator rod, and positions the light path appropriately. By consolidating these functions into a single component, the patent achieves improved light path control without proportionally increasing system complexity.
Solution Approach 2:
The patent merges the light redirection function with the existing integrator rod structure. The triangular prism is positioned to work in conjunction with the integrator rod, combining their functions to achieve both precise light path control and light integration in a unified optical arrangement, thereby minimizing the increase in 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
This configuration enhances the lifespan of the light sources by preventing direct light emission between them, ensuring uniform image projection and simplifying the structural design, allowing for 360-degree installation of the projector apparatus.
Implementation Method 1
Light of the first light source is incident into the integrator rod through the first light-entrance surface and is reflected by the first reflection inclined surface to emit out of the first light-exit surface along the light-integrating axis
Implementation Method 2
Light of the second light source is incident into the triangular prism through the third light-entrance surface and is reflected by the second reflection inclined surface to emit out of the first light-exit surface through the second light-exit surface and the second light-entrance surface sequentially along the light-integrating axis
Data Source
AI summary
A light integrating system includes an integrator rod, a triangular prism, and first and second light sources misaligned with each other. The integrator rod has a light-integrating axis, first and second light-entrance surfaces, a first reflection inclined surface and a first light-exit surface. The triangular prism adjacent to the second light-entrance surface has a third light-entrance surface, a second light-exit surface, and a second reflection inclined surface. Light of the first light source is incident into the integrator rod through the first light-entrance surface and is reflected by the first reflection inclined surface to emit out of the first light-exit surface along the light-integrating axis. Light of the second light source is incident into the triangular prism through the third light-entrance surface and is reflected by the second reflection inclined surface to emit out of the first light-exit surface through the second light-exit surface and the second light-entrance surface sequentially.