Compact Optical Sensor Design with Enhanced Accuracy
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Summary
Problems
Conventional optical sensors require separate optical elements for subdividing transmission light beams into measuring and reference beams, leading to increased complexity, larger dimensions, and the need for extensive calibration and synchronization, which results in higher costs and reduced accuracy.
Innovation solutions
An optical sensor utilizing a semitransparent photosensitive area detector that simultaneously detects both transmission and reflection light, eliminating the need for separate optics and synchronization, and allowing for direct correlation of light levels without correction factors, with the option of using an organic polymer layer as the photosensitive substrate.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If optical elements are used to subdivide the transmission light beam into measuring light beam and reference light beam, then the measurement accuracy is improved, but the device complexity and apparatus dimensions increase
Why choose this principle:
The patent combines the functions of transmitting optics and receiving optics into a single optical system. The transmission light beam and reflection light beam share common optical elements, eliminating the need for separate optical paths and reducing the number of optical components required. This merging approach maintains measurement accuracy while significantly simplifying the device structure.
Principle concept:
If optical elements are used to subdivide the transmission light beam into measuring light beam and reference light beam, then the measurement accuracy is improved, but the device complexity and apparatus dimensions increase
Why choose this principle:
The optical elements in the patent serve multiple functions simultaneously. The same optical elements are used for both transmitting the light beam and receiving the reflection light beam. This multi-functionality reduces the overall complexity of the system by eliminating redundant components that would be present in conventional separate transmit/receive optical systems.
Application Domain
Data Source
AI summary:
An optical sensor utilizing a semitransparent photosensitive area detector that simultaneously detects both transmission and reflection light, eliminating the need for separate optics and synchronization, and allowing for direct correlation of light levels without correction factors, with the option of using an organic polymer layer as the photosensitive substrate.
Abstract
An optical sensor having at least one optical transmitting unit for production of a transmitted light beam, a photosensitive flat detector with semitransparent characteristics, through which the transmitted light beam passes, and which re-receives reflection light beams, i.e., from an object, and an evaluation unit for the photoelectric current of the photosensitive flat detector, at least for detection of an object. The photosensitive flat detector advantageously includes an organic polymer layer comprising a photosensitive substrate. An “Organic Photosensitive Diode” (OPD) is particularly advantageously used as the photosensitive flat detector with semitransparent characteristics.