Pinhole Optical Sensing for Smoking Device Authentication
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Solution Overview
Problem
Existing aerosol-generating devices face challenges in authenticating consumable articles due to the need for complex optical sensing systems with lenses and mirrors, which are costly, prone to damage, and difficult to assemble in constrained spaces, especially in high-temperature environments.
Innovation Solution
A pinhole-based optical sensing system that eliminates the need for lenses and mirrors, using a pinhole to form an image on an image plane detectable by an image detector, allowing for robust and cost-effective authentication of aerosol-generating articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lenses and mirrors are used in the optical sensing system, then image detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts and removes the complex optical elements (lenses and mirrors) from the sensing system, retaining only the essential pinhole aperture. This extraction eliminates the need for alignment, focusing adjustments, and complex housing structures while maintaining the core image detection capability through the pinhole camera principle.
Solution Approach 2:
The pinhole aperture serves as a simple, inexpensive, and replaceable optical element compared to precision lenses and mirrors. The patent employs this low-cost alternative that can be easily manufactured and replaced if needed, significantly reducing system cost and complexity.
2Measurement precision
If lenses and mirrors are used in the optical sensing system, then image quality is improved, but reliability decreases due to susceptibility to damage
Solution Approach 1:
By removing fragile optical elements like lenses and mirrors from the system, the patent eliminates their susceptibility to damage from heat, dust, and mechanical impact. The pinhole aperture, being a simple opening in a barrier, has no moving parts or delicate surfaces that can be damaged.
Solution Approach 2:
The pinhole design inherently protects against optical damage by not requiring precision optical surfaces that can be scratched or contaminated. The simple aperture structure provides built-in robustness against the harsh operating environment without requiring additional protective measures.
3Measurement precision
If lenses and mirrors are used in the optical sensing system, then focusing capability is improved, but ease of manufacture worsens due to alignment requirements
Solution Approach 1:
The patent removes the complex alignment and focusing mechanisms associated with lenses and mirrors. The pinhole aperture requires no alignment procedures, focal length adjustments, or precision mounting, making the system trivial to manufacture and assemble.
Solution Approach 2:
The pinhole aperture can be manufactured as a simple feature in a barrier structure without requiring precision optical manufacturing processes. This dramatically simplifies production and eliminates the need for specialized optical alignment equipment and skilled technicians.
4Reliability
If a cover system is provided to protect the sensor, then sensor protection is improved, but device complexity increases
Solution Approach 1:
The patent eliminates the need for separate cover systems, protective housings, and cleaning mechanisms by using the pinhole aperture itself as the primary protective and functional element. The barrier containing the pinhole provides inherent protection while maintaining optical functionality.
Solution Approach 2:
The barrier structure containing the pinhole serves multiple functions simultaneously: it provides mechanical protection for the sensor, defines the optical aperture, and can be integrated into the device housing. This multi-functionality eliminates the need for separate protective cover 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 pinhole-based system provides infinite depth of field and rectilinear wide-angle images, enhancing the accuracy and reliability of indicia recognition, and can operate in high-temperature environments without damage, offering a simpler and more affordable alternative to traditional systems.
Implementation Method 1
the optical sensing system comprises at least one pinhole and an image detector, wherein the pinhole allows to form an image on an image plane, detectable by the image detector
Data Source
AI summary
An electrically powered smoking device configured to receive a consumable article includes a housing having a cavity, defining a cavity axis, for receiving at least partially the consumable article, and an optical sensing system for detecting indicia on the consumable article, wherein the optical sensing system includes at least one pinhole and an image detector, wherein the pinhole allows to form an image on an image plane, detectable by the image detector.