Integrating Plate Beam Splitter for Compact Optical Assembly
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Solution Overview
Problem
Conventional beam splitters are limited in miniaturization and assembly due to the need for multiple reflecting lenses to split external beams, which also require a significant distance between the light emitting element and the monitor photo diode, making them cumbersome and difficult to assemble.
Innovation Solution
A beam splitter design incorporating a body with a main reflection portion, a sub reflection portion, and a refraction portion, allowing for adjustable beam paths and distances between the light emitting element and the monitor photo diode, utilizing rotating angles and refractive index differences to miniaturize the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple reflecting lenses are used to split external beams, then beam splitting functionality is achieved, but the distance between light emitting element and monitor photo diode increases and device size cannot be miniaturized
Solution Approach 1:
The patent combines multiple reflecting lenses into a single integrating plate with multiple reflection portions. This merging of optical elements eliminates the need for separate lenses spaced apart, thereby reducing the overall distance between the light emitting element and monitor photo diode while maintaining beam splitting functionality.
Solution Approach 2:
The patent transitions from using multiple discrete lenses arranged in a linear path to an integrating plate where multiple reflection portions are arranged on different surfaces (first surface and second surface). This dimensional reorganization allows light to be split into multiple paths within a compact volume, reducing the required distance along the optical axis.
2Adaptability or versatility
If multiple reflecting lenses are used to split external beams, then beam splitting functionality is achieved, but assembly complexity increases and device becomes troublesome to assemble
Solution Approach 1:
The patent merges multiple reflecting lenses into a single integrating plate component. This consolidation reduces the number of separate parts that need to be assembled, thereby simplifying the assembly process and reducing complexity while maintaining the beam splitting function through multiple reflection portions on the plate.
Solution Approach 2:
The integrating plate is designed with multiple distinct reflection portions (first reflection portion, second reflection portion, third reflection portion) that are segmented in their functional roles but integrated into a single physical component. This segmentation of function within a unified structure maintains beam splitting capability while simplifying assembly compared to multiple separate lenses.
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 design enables a compact beam splitter that adjusts the distance between the light emitting element and the monitor photo diode, improving assembly ease and miniaturization while maintaining effective beam splitting functionality.
Implementation Method 1
the main reflection portion reflects the external beam to produce a main beam
Implementation Method 2
the sub reflection portion reflects the external beam to produce a sub beam
Implementation Method 3
the refraction portion is located on a second side of the body proximate to the inlet and has a third rotating angle different from the inlet, the sub beam projects out of the refraction portion so as to produce a deflective projection angle of the sub beam
Data Source
AI summary
A beam splitter contains: a body, a main reflection portion, a sub reflection portion, and a refraction portion. The body includes an inlet and an outlet. The main reflection portion is located on a first side of the body, and the main reflection portion and the outlet have a first rotating angle and a second rotating angle respectively so that the main reflection portion reflects an external beam to produce a main beam. The sub reflection portion is located on the first side of the body, and the sub reflection portion reflects the external beam to produce a sub beam. The refraction portion is located on a second side of the body and has a third rotating angle different from the inlet, the sub beam projects out of the refraction portion to produce a deflective projection angle of the sub beam.