Nested Beam Splitter Module for Compact Optical Systems

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Solution Overview

Problem

Conventional beam splitter optical devices are often expensive, difficult to manufacture and assemble with precision, and occupy significant space, making them vulnerable to vibrations and thermal drift, which is a challenge in compact research environments like microscopes.

Innovation Solution

A compact beam splitter apparatus that splits an incident light beam into multiple beams using a combination of beam splitters, mirrors, and prisms, allowing for efficient redirection and detection of light beams, reducing the spatial footprint and complexity of the system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional beam splitter devices are used to split light beams, then beam splitting functionality is achieved, but the device occupies significant space and becomes vulnerable to vibrations and thermal drift

Engineering Contradiction:
Improvestability against vibrations and thermal driftVSAvoidspatial footprint
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The patent implements a nested beam splitter configuration where a second beam splitter is positioned within the optical path of the first beam splitter. This nested arrangement allows multiple beam splitting operations to occur in a compact, overlapping spatial configuration rather than requiring separate, extended optical paths, thereby reducing the overall spatial footprint while maintaining functional stability

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent utilizes three-dimensional spatial arrangement by positioning beam splitters at different depths and angles within the optical system. The first and second beam splitters are oriented at different positions and angles relative to the optical axis, creating a multi-dimensional compact structure that reduces the two-dimensional footprint while maintaining optical path stability

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If conventional beam splitter devices are used, then beam splitting is achieved, but the devices are expensive and difficult to manufacture and assemble with precision

Engineering Contradiction:
Improvemanufacturing and assembly easeVSAvoidassembly precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent divides the beam splitting function into multiple separate beam splitter components (first beam splitter and second beam splitter) rather than using a single complex device. This segmentation allows each component to be manufactured and assembled independently with standard precision tolerances, reducing overall manufacturing difficulty and cost while maintaining functional precision

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs standard, commercially available beam splitter components that can be used in multiple configurations and applications. These universal components are designed with standardized mounting interfaces and optical specifications, making them easier to manufacture, source, and assemble compared to custom-designed beam splitting systems

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 effectively splits light beams into multiple parallel paths, enabling compact and efficient light manipulation, suitable for applications like microscopy, while minimizing space and vulnerability to environmental factors.

Implementation Method 1

A primary beam splitter of an optical apparatus can be used to split an incident light beam into a primary plurality of light beams and to direct a first beam of the primary plurality of light beams in a first direction and a second beam of the primary plurality of light beams in a second direction orthogonal to the first direction

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentUS8704150B2Beam splitter module having a secondary beam splitter for providing orthogonal light beams and parallel light beams
Publication Date: 2014.04.22 YALE UNIVERSITY
  • US8704150B2 patent drawing
  • US8704150B2 patent drawing
  • US8704150B2 patent drawing

AI summary

A primary beam splitter (310) of an optical apparatus (300) can be used to split an incident light beam (305) into a primary plurality of light beams and to direct a first beam therefrom in a first direction and a second beam therefrom in a second direction orthogonal to the first direction. Secondary beam splitters (315a,b) positioned in beam paths of the first and second beams can be used to split the first and second beams of the primary plurality of light beams into a secondary plurality of light beams (320a,b) and to split the same into a tertiary plurality of light beams (325a,b). A primary plurality of beam reflectors (335a,b/340a,b/345a,b) can be positioned and used to redirect the secondary and tertiary plurality of light beams toward a common detector (355).