Integrated Optical Channel for Alignment Stability

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Solution Overview

Problem

Existing observation systems are bulky and not suited for easy movement, lacking robustness during shocks or vibrations, and have high energy consumption.

Innovation Solution

A compact observation system with a main optical channel for receiving and emitting optical radiation, using an infrared emitter and receiver, and an optical fiber for distance measurement, integrated with a single-piece optical assembly for alignment stability and reduced energy consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate observation and laser emission/reception channels are used, then distance measurement and observation functions are achieved, but alignment stability deteriorates during shocks or vibrations

Engineering Contradiction:
Improvedistance measurement accuracyVSAvoidalignment stability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent merges the observation channel and laser emission/reception channels into a single integrated optical channel. The optical element (beam splitter) combines the functions of receiving observation light and transmitting laser radiation through the same physical pathway, ensuring that both functions share identical alignment references. This integration eliminates the misalignment problem that occurs in separate channels during shocks or vibrations, as both observation and ranging operations are performed through the same optical axis.

Inventive Principle:
Principle #5Merging (Combining)

2Measurement precision

If bulky systems are used for observation with laser illumination, then distance measurement and illumination functions are achieved, but portability deteriorates

Engineering Contradiction:
Improvedistance measurement capabilityVSAvoidsystem portability
Core Design Contradiction:
Measurement precisionVSWeight of moving object

Solution Approach 1:

The patent combines multiple functions (observation, laser illumination, distance measurement) into a single integrated system using a unified optical channel. By sharing the optical pathway and using a single optical element for both observation and laser transmission, the system eliminates redundant components that would increase weight and bulk. This integration enables portable deployment while maintaining distance measurement precision.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple separate optical channels are used, then comprehensive observation and ranging functions are achieved, but system complexity increases

Engineering Contradiction:
Improveobservation and ranging functionalityVSAvoidoptical channel configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal optical channel that performs multiple functions: receiving observation radiation, transmitting laser radiation to the target, and collecting reflected laser radiation for distance measurement. The single optical element (beam splitter) enables this multi-functionality by directing different wavelengths or directions of light through appropriate pathways, eliminating the need for separate dedicated channels for each function and thereby reducing system complexity.

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

Provides a lightweight, portable system capable of illuminating and measuring distance while maintaining alignment during movement, with reduced energy use and enhanced robustness against shocks and vibrations.

Implementation Method 1

an optical element configured to transmit part of the first optical radiation to the main sensor and to transmit the second optical radiation to the scene to be observed

Methodology Applied
Scientific EffectOptical transmission: Refraction

Implementation Method 2

an optical fiber connecting the optical connector to the transmitter... an optical fiber connecting the optical connector to the receiver

Methodology Applied
Scientific EffectOptical fiber transmission: Optical Fibre

Implementation Method 3

a main sensor configured to develop a digital image from the first optical radiation

Methodology Applied
Scientific EffectPhotoelectric conversion: Photoelectric Effect

Implementation Method 4

a receiver configured to receive a portion of the second pulsed optical radiation returned by the scene to be observed

Methodology Applied
Scientific EffectInfrared radiation detection: Infrared Radiation

Data Source

PatentEP4291935B1Observation system and method, and process for manufacturing such a system
Publication Date: 2026.04.01 BERTIN TECHNOLOGIES
  • EP4291935B1 patent drawingFigure 1

AI summary

Disclosed is an observation system comprising: a main optical path (2) that can receive first optical radiation (60) emitted by a scene to be observed and includes a main sensor (7) configured to generate a digital image from the first optical radiation (60) and an emitter (100) configured to emit second optical radiation (101) in the infrared range; the main optical path (2) comprising an optical element (11) configured to transmit a portion (22) of the first optical radiation (60) to the main sensor (7) and transmit the second optical radiation (101) to the scene to be observed.