Adjustable Collimating Lenses for Optical Path Deviation

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Solution Overview

Problem

Conventional optical processing devices face increased coupling loss due to beam position deviation in the optical path conversion optical system, where structural restrictions limit the adjustment of components like mirrors, making it difficult to correct beam position alignment.

Innovation Solution

The optical processing device incorporates a series of adjustable collimating lenses and an optical path conversion system with a mirror element and intermediate mirror, allowing for beam dispersion and wavelength-dependent path conversion, enabling precise adjustment of the beam path to suppress position deviation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If a conventional optical path conversion optical system with fixed mirror positions is used, then the structure is simple and easy to manufacture, but the beam position deviates from the output path causing increased coupling loss

Engineering Contradiction:
Improvecoupling lossVSAvoidoptical path conversion optical system
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The patent introduces adjustable collimating lenses that can be moved along the optical path to dynamically adjust the beam position. This transforms the static optical system into a dynamic one where the beam position can be corrected by changing the distance between collimating lenses, thereby reducing coupling loss without requiring complex mirror adjustment mechanisms

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent uses collimating lenses as intermediary elements between the dispersion element and the optical path conversion system. These lenses serve as mediators that can adjust the beam position independently of the mirror positions, allowing correction of beam deviation without affecting the overall system structure or requiring mirror repositioning

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If the mirror position is misaligned in the optical path conversion system, then the beam position deviates, but adjusting the mirror position is difficult due to structural restrictions

Engineering Contradiction:
Improvebeam position alignmentVSAvoidadjustability of optical components
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent makes the collimating lenses movable along the optical path, allowing dynamic adjustment of the beam position to correct alignment errors. This provides ease of operation for beam positioning without requiring structural changes to the mirror mounting system

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of collimating lens position along the optical path to correct beam alignment. By adjusting the distance between collimating lenses, the beam position can be fine-tuned to compensate for mirror misalignment, improving manufacturing precision without complicating the mechanical structure

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If collimating lenses are installed in series with adjustable distances, then the beam path can be precisely adjusted to suppress position deviation, but the device complexity increases

Engineering Contradiction:
Improvebeam position controlVSAvoidoptical path conversion optical system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces movable collimating lenses that can be adjusted along the optical path to dynamically control beam position. This dynamic adjustment capability provides precise beam position control while using a relatively simple mechanism compared to adjusting mirror positions or adding complex alignment systems

Inventive Principle:
Principle #15Dynamics

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 allows for improved output characteristics by adjusting the beam path, reducing coupling loss even when the mirror is misaligned, thereby enhancing the optical fiber coupling efficiency.

Implementation Method 1

a plurality of collimating lenses to which a beam emitted from the optical fibers are incident; wherein the plurality of collimating lenses is installed in series in the optical path direction of the beam emitted from the optical fiber

Methodology Applied
Scientific EffectLens: Lens

Implementation Method 2

a dispersion element which disperses the beam emitted from one optical fiber among the plurality of optical fibers

Methodology Applied
Scientific EffectDispersion: Dispersion (of waves)

Implementation Method 3

The optical path conversion optical system may include a mirror element which reflects the beam at a first reflection point

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 4

an intermediate mirror which reflects the beam reflected from the mirror element at an intermediate reflection point

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentUS8693818B2Optical processing device
Publication Date: 2014.04.08 MOLEX INC
  • US8693818B2 patent drawing
  • US8693818B2 patent drawing
  • US8693818B2 patent drawing

AI summary

Provided is an optical processing device including: a beam emission portion which comprises a plurality of optical fibers; a plurality of collimating lenses to which a beam emitted from the optical fibers are incident; a dispersion element which disperses the beam emitted from one optical fiber among the plurality of optical fibers; and an optical path conversion optical system which converts an optical path of the beam passing through the dispersion element and allows the beam to be incident to another optical fiber among the plurality of optical fibers, wherein the plurality of collimating lenses is installed in series in the optical path direction of the beam emitted from the optical fiber, and wherein a distance between at least two collimating lenses are adjustable in the optical path direction.