Transmissive Dimension Measuring Device Optical Axis Alignment
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Solution Overview
Problem
Conventional optical type transmissive dimension measuring devices face challenges in intuitively adjusting optical axes and detecting contamination, leading to inconvenient alignment processes and potential erroneous measurements due to optical axis deviations and surface contamination.
Innovation Solution
A transmissive dimension measuring device with a projector and optical receiver configuration that includes an incident light position display unit using indicating lamps to visually represent the light projecting spot, allowing for intuitive adjustment of optical axes and immediate detection of contamination, along with operation mode settings and measurement position displays to enhance user understanding and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the density of light projected is increased to make the light projecting spot visible to the human eye, then the visibility of the light projecting spot is improved, but the light source may suffer from safety hazards and degradation of life span
Solution Approach 1:
The patent uses a light emitting element (such as an LED) to create a visible light projecting spot that copies or represents the actual measurement light path. This visual indicator allows users to see where the measurement light is projected without requiring the measurement light itself to be visible, thus avoiding safety hazards and light source degradation while maintaining operational visibility and guidance.
2Measurement precision
If the distance between light source and light projecting lens is separated to make parallel light with high accuracy, then the parallel light accuracy is improved, but the device structure becomes more complex and larger
Solution Approach 1:
The patent divides the optical system into separate functional modules: a light emitting element for generating light, a light projecting lens for creating parallel light, and a light emitting element (indicator) for visual display. This segmentation allows each component to be optimized independently and simplifies the overall structure while maintaining parallel light accuracy through proper optical design of the projecting lens.
3Measurement precision
If contamination is attached to the light projecting surface or light receiving surface, then measurement accuracy deteriorates due to erroneous detection, but the user cannot intuitively determine what has happened without additional display
Solution Approach 1:
The patent introduces a light emitting element as an intermediary visual indicator that displays the state of the light receiving surface. This indicator acts as a mediator between the contamination condition and the user's understanding, providing intuitive visual feedback about measurement status and potential contamination issues without requiring complex diagnostic displays or user interpretation of raw measurement data.
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 easy and intuitive adjustment of optical axes, immediate identification of contamination issues, and accurate measurement by providing a visual representation of the light projecting spot and measurement areas, thereby reducing measurement errors and operational complexity.
Implementation Method 1
a light emitting element which emits light
Implementation Method 2
a light projecting lens which converts light emitted by the light emitting element to parallel light
Implementation Method 3
an optical receiver which receives light transmitted through the area to be measured
Implementation Method 4
displays an incident light position on the optical receiver by a plurality of indicating lamps
Data Source
AI summary
There is provided a transmissive dimension measuring device in which a user can intuitively and easily adjust optical axes of a projector and an optical receiver, and in which a suitable action can be immediately taken when contamination is attached to a light projecting surface of the projector and a light receiving surface of the optical receiver. An incident light position display unit provided on the optical receiver expresses a light projecting spot in a pseudo manner by making an LED corresponding to an incident light position turn on, the light projecting spot being incident on the optical receiver arranged with a predetermined interval to the projector which projects light. The incident light position display unit is provided on an upper surface side opposite to a bottom surface that is a surface on which the optical receiver is installed on a base.