Integrated Thin Film Imager for Multi-Mode Optical Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current imaging devices require a finite optical path to perform quality imaging in different modes like bright-field, dark-field, and frustrated total internal reflection, limiting their design flexibility and applicability.
Innovation Solution
An integrated imager system that uses a thin film structure with a light source, a light-blocking layer with pin holes, and photo sensors, allowing easy switching between bright-field, dark-field, and frustrated total internal reflection imaging modes without a finite optical path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a finite optical path is used to create quality images in different imaging modes, then imaging quality is improved, but device thickness and complexity increase
Solution Approach 1:
The patent extracts and removes the finite optical path components (lenses, mirrors, and other optical elements) from the imaging system. By using a contact imaging approach where the sensor array is placed in direct contact with the object, the system eliminates the need for light to travel through a finite optical path, thereby reducing device thickness while maintaining imaging capability
Solution Approach 2:
The patent introduces a microlens array as an intermediary element positioned between the object and the sensor array. This microlens array focuses light from different imaging modes (bright-field, dark-field, frustrated total internal reflection) onto the sensor plane, enabling high-quality imaging without requiring a finite optical path or additional optical components
2Reliability
If dedicated imaging devices are used for each imaging mode, then imaging quality for each mode is optimized, but device complexity and versatility worsen
Solution Approach 1:
The patent creates a universal imaging device that can perform multiple imaging modes (bright-field, dark-field, and frustrated total internal reflection) using a single sensor array and microlens array combination. By changing the illumination conditions and analyzing different light paths through the microlens array, the system achieves multi-mode capability without requiring separate dedicated devices for each imaging mode
Solution Approach 2:
The patent segments the imaging function into two independent components: the microlens array that handles light focusing and routing, and the sensor array that captures the image data. This segmentation allows the same hardware configuration to support multiple imaging modes by varying the illumination and analysis methods, thereby improving versatility while maintaining imaging quality
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 high-quality imaging in various modes with flexible design parameters, reducing the need for a finite optical path and enhancing versatility across different applications.
Implementation Method 1
at least a portion of the light reflected off of the object is received through the hole
Implementation Method 2
a thin film light-blocking layer that has at least one hole such that at least a portion of the light reflected off of the object is received through the hole
Data Source
AI summary
An optical imaging system includes a thin film imager that is able to create images of objects in various modes of imaging such as bright field, dark field, frustrated total internal reflection, fly eye, and the like. The imaging system may be an integrated optical design that performs different modes of optical imaging in the same imaging device by positioned pin hole structures in geometries that capture images according to the desired mode of imaging.