LED Lighting Unit Calibration Storage for Optical Measuring Apparatus
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Solution Overview
Problem
Optical measuring apparatuses with LED lighting units face challenges in maintaining accurate light intensity due to variability between LEDs, requiring frequent calibration and increasing assembly time and costs, with risks of incorrect brightness if wrong units are connected.
Innovation Solution
Integrating a storage unit with calibration values directly into the lighting unit, allowing for independent calibration and eliminating the need for on-site servicing, enabling accurate light intensity control across a range of values without increasing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration values are stored in a separate lighting controller, then light intensity control is achieved, but replacement cost and assembly time increase due to required on-site calibration
Solution Approach 1:
The patent combines the storage unit containing calibration values with the lighting unit itself, merging previously separate functions. This allows the lighting unit to be self-contained with its calibration data, eliminating the need for separate calibration operations when replacing lighting units and thereby reducing assembly time while maintaining light intensity accuracy.
Solution Approach 2:
The calibration values are pre-stored in the storage unit integrated with the lighting unit during manufacturing. This preliminary action ensures that when the lighting unit is installed or replaced, the calibration data is already available, eliminating the need for on-site calibration operations and reducing assembly time.
2Measurement precision
If calibration values are stored in a separate lighting controller, then light intensity control is achieved, but replacement cost increases due to servicing requirements
Solution Approach 1:
The storage unit with calibration values is merged into the lighting unit, creating a self-contained module. This reduces replacement cost by eliminating the need for separate calibration operations and servicing visits, as the lighting unit can be replaced without requiring technical personnel to perform calibration procedures.
Solution Approach 2:
The lighting unit becomes self-service capable by having its calibration values stored internally. When replaced, the unit brings its own calibration data, eliminating the need for external servicing and calibration operations, thereby reducing replacement costs.
3Productivity
If calibration is performed after assembly, then production efficiency improves, but assembly process complexity increases
Solution Approach 1:
Calibration values are pre-stored in the storage unit integrated with the lighting unit during manufacturing. This allows calibration to be performed as a preliminary action rather than requiring post-assembly calibration operations, improving production efficiency while the integration keeps the overall system complexity manageable.
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 solution reduces replacement costs, improves production efficiency by allowing light calibration post-assembly, and ensures accurate light intensity control, minimizing the risk of incorrect brightness from mismatched lighting units.
Implementation Method 1
The lighting unit has a light-emitting diode as a light source
Implementation Method 2
the light-emitting diode generates a light intensity corresponding to the light intensity command value
Data Source
AI summary
An optical measuring apparatus including: a measuring apparatus body, a lighting unit, a lighting controller. The lighting unit is demountably mounted on the measuring apparatus and has an LED as a light source. The lighting controller is configured to control the lighting unit according to a light intensity command value. The lighting unit includes a storage unit in which a calibration value is stored. The calibration value generates a light intensity corresponding to the light intensity command value. The lighting controller is configured to read calibration values corresponding to the light intensity command value out from the storage unit of the lighting unit upon receipt of the light intensity command value, and controls the LED on the basis of the calibration value.