Lens Assembly with Integrated Light Source for Spectroscopy
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Solution Overview
Problem
Conventional spectroscopic analyzing apparatuses for nondestructive sugar content measurement in fruits face challenges due to the parallel arrangement of light emitting and receiving units, which affects measurement accuracy and requires significant space, leading to errors and increased volume.
Innovation Solution
A lens assembly with an integrated light source and internal light shielding unit, where the light source is positioned at the center of a through hole in the lens, allowing for a compact design and minimizing light interference, with the light source and lens on the same optical axis, and an external light shielding unit to prevent external light from entering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the light emitting unit and light receiving unit are arranged laterally in parallel, then the apparatus can be designed with separate components, but the measurement accuracy is greatly affected by size and shape of the object and the volume of the apparatus increases
Solution Approach 1:
The patent merges the light emitting unit and light receiving unit into a single integrated assembly where the light source is positioned at the center of a through hole in the lens, with both units sharing the same optical axis. This integration eliminates the need for separate lateral arrangement and reduces the apparatus volume while improving measurement accuracy by ensuring consistent optical path alignment.
2Volume of stationary object
If the distance between the light emitting unit and the light receiving unit increases, then the apparatus volume can be reduced, but the measurement result is greatly affected by size and shape of the object
Solution Approach 1:
By integrating the light source and lens into a single compact assembly where the light source is positioned at the center of a through hole in the lens, the patent achieves both small apparatus volume and consistent measurement accuracy. The integrated design ensures fixed, optimal distance between light emitting and receiving units, eliminating variability caused by increased spacing.
3Volume of stationary object
If the distance between the light emitting unit and the light receiving unit decreases, then the apparatus volume can be reduced, but the depth of penetration of the light into the object decreases generating light interference
Solution Approach 1:
The integrated assembly with the light source at the center of a through hole in the lens achieves compact volume while maintaining optimal light penetration depth. The precise positioning and integration ensure that light interference is minimized despite the reduced distance, as the optical path is carefully controlled within the integrated structure.
4Ease of operation
If a bundle of optical fibers is used to focus and transmit light, then the apparatus can be designed for portable use, but securing space and arranging optical fibers becomes difficult
Solution Approach 1:
The patent extracts the optical fiber bundle approach and replaces it with a direct integrated lens and light source assembly. This eliminates the complexity of arranging and coupling optical fibers while maintaining the ability to focus and transmit light. The integrated design achieves portability without the arrangement difficulties associated with fiber bundles.
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 enhances measurement accuracy and precision by reducing light interference and allowing deeper penetration, while also downsizing the apparatus, making it portable and less affected by the size and shape of the object.
Implementation Method 1
a light source configured to emit light to an object to be measured
Implementation Method 2
light diffused and reflected from inside the object
Implementation Method 3
a lens configured to receive light diffused and reflected from inside the object
Data Source
AI summary
A lens assembly with an integrated light source includes a light source configured to emit light to an object to be measured, a lens configured to receive light diffused and reflected from inside the object, a through hole formed at a center of the lens, in which the light source is arranged, and an internal light shielding unit arranged between the light source and an inner wall of the through hole, wherein a front portion of the internal light shielding unit protrudes from a surface of the lens toward the object.