UV Laser Machining Device Sealed Optical Path
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Solution Overview
Problem
Laser machining devices face output decreases due to impurities formed from electric components like resin and wires in guide-light emitting devices and imaging devices, leading to chemical reactions and contamination on optical components, causing transmission and reflection losses.
Innovation Solution
A laser machining device configuration with a sealed space for optical components and positioning guide-light emitting and imaging devices outside the sealed space to prevent impurity adhesion, using half mirrors for optical components and a drying agent to maintain a clean environment, ensuring the optical components remain free from contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If guide-light emitting devices and imaging devices are placed around the optical path to enable visualization and imaging functions, then the device functionality is improved, but impurities from electric components contaminate optical components causing output decrease
Solution Approach 1:
The device is divided into two separate spaces: a sealed space housing only optical components (mirrors, lenses) and an unsealed space housing electric components (guide-light emitting device, imaging device). This segmentation prevents impurities from electric components from contaminating optical components while maintaining all device functions.
Solution Approach 2:
Electric components that generate impurities (guide-light emitting device and imaging device with circuit boards and wires) are extracted from the sealed optical component space and placed in a separate unsealed space. This removes the source of contamination from the optical path environment.
2Ease of operation
If electric components are provided for guide-light emitting and imaging functions, then the operational capability is improved, but vaporization of resin and adhesive forms impurities that adhere to optical components
Solution Approach 1:
The device is divided into two separate spaces: a sealed space housing only optical components (mirrors, lenses) and an unsealed space housing electric components (guide-light emitting device, imaging device). This segmentation prevents impurities from electric components from contaminating optical components while maintaining all device functions.
Solution Approach 2:
A sealed enclosure acts as an intermediary barrier between electric components and optical components. This sealed space allows optical components to operate in a clean environment while electric components can function outside the sealed space without direct contact between the two.
3Device complexity
If impurities adhere to optical components, then the device structure remains simple, but transmission loss and reflection loss occur reducing laser light output
Solution Approach 1:
The device is divided into two separate spaces: a sealed space housing only optical components (mirrors, lenses) and an unsealed space housing electric components (guide-light emitting device, imaging device). This segmentation prevents impurities from electric components from contaminating optical components while maintaining all device functions.
Solution Approach 2:
The sealed space creates a protected environment for optical components, isolating them from impurities generated by electric components. This inert environment prevents chemical reactions and adhesion of impurities to optical surfaces, maintaining transmission and reflection efficiency.
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
Prevents output decreases by maintaining the cleanliness of optical components, reducing transmission and reflection losses, and maintaining the device's efficiency, especially effective for UV laser light where optical dust collection effects are more pronounced.
Implementation Method 1
an excitation-light generating section (110) configured to generate excitation light; a laser-light output section (2) configured to generate UV laser light on the basis of the excitation light generated by the excitation-light generating section (110) and emit the UV laser light
Implementation Method 2
a transmission window section (31c) configured to transmit guide light emitted from a guide-light emitting device (35) disposed on an outer side of the sealed space (Sz)
Implementation Method 3
a transmission window section (31d) configured to transmit light received by an imaging device (36) disposed on the outer side of the sealed space (Sz)
Implementation Method 4
an optical component disposed to cause an optical path of UV laser light emitted from the laser-light output section (2) and an optical path of transmitted light transmitted through the transmission window section (31c) to cross
Data Source
AI summary
To prevent an output decrease of laser light due to impurities that could be formed in a guide-light emitting device or an imaging device. A laser-light guiding section includes a transmission window section, an optical component disposed to cause an optical path of the UV laser light emitted from the laser-light output section and an optical path of transmitted light transmitted through the transmission window section to cross, and a sealing member in which the transmission window section is provided, the sealing member configuring a sealed space for airtightly housing the optical component. At least one of a guide-light emitting device configured to emit guide light for visualizing a scanning position of the UV laser light toward the transmission window section and an imaging device configured to receive light for imaging a workpiece via the transmission window section is disposed on the outer side of the sealed space.