Beam Splitter Integration for Optical Measurement Accuracy
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Solution Overview
Problem
Optical measurement apparatuses face challenges in improving measurement accuracy and workability.
Innovation Solution
An image pickup apparatus is introduced, comprising a base section, a beam splitter, and an image pickup section, which is detachably attached to the optical measurement apparatus, allowing for the projection of a subject's image on a screen and simultaneous image pickup, enhancing measurement accuracy and workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an optical measurement apparatus uses only projection optical system to project image on screen, then the apparatus structure remains simple, but measurement accuracy and workability are insufficient
Solution Approach 1:
The patent combines the projection optical system and image pickup optical system into a single integrated apparatus. The projection unit projects the subject image onto a screen, while the image pickup unit simultaneously captures the same image through the beam splitter. This merging of functions allows the system to benefit from both projection-based measurement and image-based measurement, thereby improving measurement accuracy without requiring completely separate apparatuses.
Solution Approach 2:
The optical measurement apparatus is designed to perform multiple functions: it can project images onto a screen for visual measurement, simultaneously capture images for digital analysis, and switch between different measurement modes. The image pickup section can detect both the projected image on the screen and the subject directly, providing universal measurement capabilities that improve workability and accuracy across different measurement scenarios.
2Ease of operation
If additional image pickup apparatus is added to optical measurement apparatus, then measurement workability improves, but apparatus complexity and cost increase
Solution Approach 1:
Instead of adding a completely separate image pickup apparatus, the patent integrates the image pickup function into the existing optical measurement apparatus structure. The image pickup section shares the optical path with the projection system through the beam splitter, and the control unit coordinates both projection and image pickup operations. This integration improves measurement workability by having both functions in one apparatus while avoiding the complexity and cost of completely separate systems.
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
The solution improves measurement accuracy and workability by enabling the use of both projected and picked-up images, facilitating efficient measurement processing and reducing the need for additional equipment, thus being cost-effective.
Implementation Method 1
a beam splitter 40. The beam splitter 40 is disposed on an optical axis O1 of the projection optical system 20 when the lens unit 30 is attached. The image pickup lens section 33 takes an image of a workpiece W on the basis of light L2 generated through splitting at the beam splitter 40
Data Source
AI summary
An image pickup apparatus that is capable of improving measurement accuracy and measurement workability of an optical measurement apparatus, an optical measurement apparatus including the image pickup apparatus, and a measurement system. An image pickup apparatus according to an embodiment includes a base section, a beam splitter, and an image pickup section. The base is configured to detachably attach to an optical measurement apparatus including an optical projection system configured to project an image of a subject on a screen. The beam splitter is disposed on an optical axis of the optical projection system upon attachment of the base to the optical measurement apparatus. The image pickup circuitry includes an image pickup device configured to receive light generated through splitting at the beam splitter and is configured to take an image of the subject upon attachment of the base.