Particle Detection Using Multi-Path Laser Reflection
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Solution Overview
Problem
Existing particle detecting devices are ineffective in accurately detecting particles in a specific area due to limited irradiation range and number of particles irradiated, leading to inaccurate detection of particle presence or quantity.
Innovation Solution
Incorporating a reflector to intersect the laser light and observed light paths multiple times at different positions, increasing the number of intersections and enhancing detection accuracy by using light source light reflectors and scattered light reflectors to redirect the laser light and observed light paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a laser beam is reciprocated between a reflecting film and a reflecting mirror to obtain higher energy density, then the energy density of the irradiated light is improved, but the irradiation range is limited and the number of particles irradiated is not increased
Solution Approach 1:
The patent divides the single reciprocating light path into multiple independent light paths by using multiple reflecting films and mirrors. Each light path can be independently controlled to irradiate different regions, thereby expanding the overall irradiation range while maintaining high energy density in each path.
Solution Approach 2:
The patent extends the light irradiation from a single line (one-dimensional reciprocating path) to a two-dimensional area by using multiple light paths arranged in different spatial dimensions. This allows the laser to cover a broader observation area while maintaining sufficient energy density through controlled light paths.
2Device complexity
If a single straight line light beam is used for particle detection, then the device structure is simple, but the detection accuracy is insufficient due to limited irradiation range and number of particles
Solution Approach 1:
The patent segments the single detection function into multiple independent light paths, each capable of detecting particles in different regions. This segmentation allows the system to maintain relative structural simplicity while significantly improving detection accuracy by covering more particles and areas.
Solution Approach 2:
The patent makes each light path serve multiple functions: irradiating particles, detecting scattered light, and potentially focusing on different observation points. This multi-functionality allows a single device to achieve enhanced detection accuracy without proportionally increasing complexity.
3Use of energy by moving object
If the light beam is reciprocated to increase energy density, then the light energy is concentrated, but the number of particles irradiated and detected remains limited
Solution Approach 1:
The patent segments the concentrated light energy into multiple independent light paths, each capable of irradiating and detecting particles. This allows the system to maintain energy concentration in each path while increasing the total number of particles irradiated across all paths.
Solution Approach 2:
The patent transitions from irradiating particles along a single line to irradiating particles across a two-dimensional area by arranging multiple light paths in different spatial dimensions. This increases the quantity of particles irradiated while maintaining sufficient energy density through controlled light path geometry.
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 configuration significantly improves particle detection accuracy by increasing the number of intersections, allowing for more precise detection of particles in the observed area, effectively addressing the limitations of previous technologies.
Implementation Method 1
a laser light source to irradiate a laser light
Implementation Method 2
a light detector to detect the laser light scattered by a particle
Implementation Method 3
a light source light reflector to reflect the laser light to make it intersect an observed light path of the light detector plural times at different positions
Implementation Method 4
a scattered light reflector to reflect the observed light path of the light detector to make it intersect the laser light plural times at different positions
Data Source
AI summary
A particle detecting device including a light source light reflector to reflect a laser light to make it intersect an observed light path of a light detector plural times at different positions, or a scattered light reflector to reflect the observed light path of the light detector to make it intersect the laser light plural times at different positions is installed on a side of a printed surface of a record medium in the inside of an image forming apparatus.