Component Placement Unit Illumination via Reflected Light
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Solution Overview
Problem
Existing component placement units require a separate and bulky light source with electronic driving and cabling, which occupies space and weight, making efficient illumination and accurate component placement challenging.
Innovation Solution
Integration of a light source with a diffuser on the side of the object space averted from the light source, allowing the light to be reflected and diffused through the stop plate and lens assemblies, eliminating the need for a separate illumination unit and enhancing illumination efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a separate light source is disposed on a side of the second lens assembly that is averted from the object space, then the component can be illuminated, but the light source occupies relatively much space and is relatively heavy
Solution Approach 1:
The patent integrates the light source directly into the imaging device housing rather than using a separate external light source. This merging of functions eliminates the need for separate cabling and control units, reducing overall system weight and space occupation while maintaining effective illumination of the component for image capture
2Illumination intensity
If a separate light source is disposed on a side of the second lens assembly that is averted from the object space, then the component can be illuminated, but separate electronic driving and cabling are required
Solution Approach 1:
The light source is integrated into the imaging device housing with its electronic driving circuitry and control mechanisms combined within the same unit. This eliminates separate cabling and control units, simplifying the electronic architecture and reducing device complexity while ensuring reliable illumination for component imaging
3Illumination intensity
If the light source is disposed between the stop plate and the second lens assembly and directed towards a reflecting side of the stop plate, then more effective illumination is obtained, but the optical path becomes more complex
Solution Approach 1:
The stop plate is utilized as an intermediary reflective element to redirect light from the light source toward the component. By positioning the light source between the stop plate and the second lens assembly and utilizing the reflecting side of the stop plate, the system achieves effective illumination while managing optical path complexity through the stop plate's dual function as both an aperture control and light reflection element
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 reduces the weight and complexity of the component placement unit, enabling more accurate and efficient illumination and positioning of components on a substrate with improved image quality and reduced space requirements.
Implementation Method 1
By means of the stop plate the light from the light source is reflected and diffused in the direction of the second lens assembly
Implementation Method 2
a diffuser which is disposed on a side of the object space that is averted from the light source... By means of the diffuser the light from the light source is diffused
Data Source
AI summary
A device suitable for producing an image of an object disposed in an object space by means of a sensor comprises at least the sensor, a first lens assembly disposed in front of the sensor, a stop plate comprising a light passage disposed in front of the first lens assembly, a second lens assembly disposed in front of the stop plate and the object space disposed in front of the second lens assembly. The device further comprises a light source, as well as a diffuser which is disposed on a side of the object space that is averted from the light source.