Radiation Steering Mechanism With Non-Orthogonal Mirror Axes

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Solution Overview

Problem

Current electromagnetic radiation steering mechanisms for laser scanning and marking systems are bulky and cumbersome due to the need for orthogonally oriented mirrors, limiting their integration and flexibility in production systems.

Innovation Solution

An electromagnetic radiation steering mechanism with non-orthogonal rotational axes and steering axes, decoupling the orientations of the optical elements' rotational axes from the steering axes, allowing for a compact and flexible design that can be installed coaxially with the laser beam, using an electromagnetic radiation manipulator to introduce a difference between the angles of the rotational and steering axes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If orthogonally oriented mirrors are used to achieve perpendicular steering axes, then the electromagnetic radiation can be steered about a two-dimensional field of view, but the housing must be large enough to accommodate the orthogonally oriented mirrors and actuators, resulting in large, heavy and cumbersome mechanisms

Engineering Contradiction:
Improvetwo-dimensional field of view steering capabilityVSAvoidhousing weight and size
Core Design Contradiction:
Adaptability or versatilityVSWeight of stationary object

Solution Approach 1:

The patent introduces a third dimension by tilting the mirrors relative to the perpendicular plane. Instead of having mirrors oriented strictly orthogonally in two dimensions, the mirrors are angled at specific orientations (e.g., 45 degrees) relative to the perpendicular plane, allowing the rotational axes to be non-orthogonal while still achieving perpendicular steering axes through the combined effect of rotation and tilt

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

Solution Approach 2:

The patent changes the angular parameters of the mirror orientations. Rather than using standard orthogonal orientations (0 and 90 degrees), the mirrors are oriented at specific angles (e.g., both at 45 degrees to the perpendicular plane) to decouple the rotational axis orientation from the steering axis orientation, enabling compact housing design while maintaining full two-dimensional steering capability

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If orthogonally oriented mirrors are used to achieve perpendicular steering axes, then the electromagnetic radiation can be steered about a two-dimensional field of view, but the housing must be large enough to accommodate the orthogonally oriented mirrors and actuators, resulting in cumbersome mechanisms

Engineering Contradiction:
Improvetwo-dimensional field of view steering capabilityVSAvoidhousing structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a third dimension by tilting the mirrors relative to the perpendicular plane. Instead of having mirrors oriented strictly orthogonally in two dimensions, the mirrors are angled at specific orientations (e.g., 45 degrees) relative to the perpendicular plane, allowing the rotational axes to be non-orthogonal while still achieving perpendicular steering axes through the combined effect of rotation and tilt

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

Solution Approach 2:

The patent changes the angular parameters of the mirror orientations. Rather than using standard orthogonal orientations (0 and 90 degrees), the mirrors are oriented at specific angles (e.g., both at 45 degrees to the perpendicular plane) to decouple the rotational axis orientation from the steering axis orientation, enabling compact housing design while maintaining full two-dimensional steering capability

Inventive Principle:
Principle #35Parameter changes

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

Enables the integration of laser scanning or marking systems into production lines with a compact, lightweight marking head, providing greater design freedom and flexibility, reducing the size and weight of the system while maintaining a full two-dimensional field of view.

Implementation Method 1

a first optical element having an associated first actuator configured to rotate the first optical element about a first rotational axis to change a first coordinate of a first steering axis

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

a second optical element having an associated second actuator configured to rotate the second optical element about a second rotational axis to change a second coordinate of a second steering axis

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 3

an electromagnetic radiation manipulator optically disposed between the first and second optical elements, wherein a first angle is defined between the first and second rotational axes, a second angle is defined between the first and second steering axes, and the electromagnetic radiation manipulator is configured to introduce a difference between the first angle and the second angle

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentUS11822070B2Electromagnetic radiation steering mechanism
Publication Date: 2023.11.21 ALLTEC ANGEWANDTE LASER LICHT TECH GMBH
  • US11822070B2 patent drawing
  • US11822070B2 patent drawing
  • US11822070B2 patent drawing

AI summary

An electromagnetic radiation steering mechanism An electromagnetic radiation steering mechanism configured to steer electromagnetic radiation to address a specific location within a two-dimensional field of view comprising a first optical element having an associated first actuator configured to rotate the first optical element about a first rotational axis to change a first coordinate of a first steering axis in the two-dimensional field of view, a second optical element having an associated second actuator configured to rotate the second optical element about a second rotational axis to change a second coordinate of a second steering axis in the two-dimensional field of view, and an electromagnetic radiation manipulator optically disposed between the first and second optical elements. A first angle is defined between the first and second rotational axes and a second angle is defined between the first and second steering axes. The electromagnetic radiation manipulator is configured to introduce a difference between the first angle and the second angle.