Lighting Device Absolute Position Control

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Solution Overview

Problem

Existing lighting devices face challenges in precise orientation and alignment of light sources due to reliance on complex feedback systems, which complicate mechanics and are costly, especially when not installed on a perfectly horizontal surface.

Innovation Solution

Incorporation of a measuring device that determines the light source's position in an absolute reference frame using gyroscopes or accelerometers, allowing for precise orientation and alignment independent of mechanical part references, eliminating the need for complex feedback systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a feedback system is used to determine the position of the light source, then the positioning accuracy is improved, but the device complexity and cost significantly increase

Engineering Contradiction:

Improvepositioning accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical feedback systems with a measuring device that directly determines the position of the light source in an absolute reference frame. This substitution eliminates the need for complicated feedback mechanisms while maintaining positioning accuracy, as the measuring device provides direct position information without requiring mechanical reference structures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a measuring device as an intermediary between the light source and the control system. This measuring device directly measures the position in an absolute reference frame and provides this information to the control system, eliminating the need for complex feedback systems that would otherwise be required to achieve accurate positioning.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If a feedback system is used to control light source position, then positioning accuracy is improved, but the cost significantly increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidmanufacturing cost

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent replaces expensive mechanical feedback systems with a more cost-effective measuring device that directly determines position in an absolute reference frame. This substitution maintains positioning accuracy while significantly reducing manufacturing costs by eliminating complex feedback mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs a measuring device that provides direct position measurement without requiring expensive, complex feedback systems. This approach uses a simpler, more cost-effective solution that achieves the same positioning accuracy without the high manufacturing costs associated with traditional feedback systems.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Device complexity

If the light source position is determined relative to mechanical parts, then the measurement system is simpler, but positioning accuracy deteriorates when the device is not on a horizontal surface

Engineering Contradiction:

Improvemeasurement system complexityVSAvoidpositioning accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent inverts the traditional approach by determining the position of the light source in an absolute reference frame rather than relative to mechanical parts. This inversion allows the system to maintain high positioning accuracy even when the device is not on a horizontal surface, as the absolute reference frame is not affected by the device's orientation or installation conditions.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent employs a measuring device that provides universal position determination in an absolute reference frame, making the system independent of specific installation conditions. This universal approach allows accurate positioning whether the device is mounted on a horizontal surface, suspended from above, or installed at various inclines, eliminating the limitations of relative measurement 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

Enables precise and cost-effective control of light source orientation and alignment, even when installed at inclines, simplifying mechanics and ensuring accurate light beam direction without the need for costly feedback systems.

Implementation Method 1

determines the light source's position in an absolute reference frame using gyroscopes or accelerometers

Methodology Applied

Scientific EffectGyroscope: Gyroscope

Implementation Method 2

determines the light source's position in an absolute reference frame using gyroscopes or accelerometers

Methodology Applied

Scientific EffectAccelerometer: Accelerometer

Data Source

PatentEP2690357B1A lighting device

Publication Date: 2015.08.05 SGM

Figure 1
Figure 2

AI summary

A lighting device (1; 11) comprises a light source for emitting a light beam in order to illuminate an environment, a positioning device for changing orientation of the light source, so that the light beam can be emitted in a desired direction, a measuring device (7, 8; 17) for determining position of the light source in an absolute reference frame.