Light Source Device Sensor Wavelength Anomaly Detection
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Solution Overview
Problem
Conventional light source devices face challenges in maintaining light condensing efficiency while keeping manufacturing costs low, particularly due to the use of beam splitters which increase production expenses.
Innovation Solution
The proposed light source device incorporates a second lens with a curvature different from the first lens, positioned between the wavelength converting member and the first lens, to condense light traveling back towards the excitation light source and direct it onto a sensor, enhancing light condensing efficiency without the need for a beam splitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a beam splitter is used to reflect light toward a sensor, then light condensing efficiency and detection accuracy are improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the beam splitter component from the optical system. Instead of using a beam splitter to reflect light toward the sensor, the invention uses a different optical path where the wavelength converting member itself directs light to the sensor, eliminating the need for the beam splitter and reducing manufacturing cost while maintaining detection accuracy
Solution Approach 2:
The wavelength converting member is given multiple functions: it not only converts the wavelength of light but also serves as an optical element that directs light toward the sensor. This multi-functionality eliminates the need for separate components like beam splitters, reducing overall system complexity and manufacturing cost
2Measurement precision
If light condensing efficiency is maximized using conventional optical paths, then sensor accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the wavelength conversion function and the light direction function into a single integrated optical path. The light emitted by the wavelength converting member is directly guided to the sensor without requiring separate beam splitting and reflection components, simplifying the overall optical system while maintaining effective light condensing and detection accuracy
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 ensures improved light condensing efficiency for the sensor, reduces manufacturing costs by eliminating the need for a beam splitter, and enhances the accuracy of anomaly detection in the wavelength converting member.
Implementation Method 1
a first lens that condenses the primary light
Implementation Method 2
a wavelength converting member that emits secondary light including the primary light and wavelength converted light
Implementation Method 3
a second lens that condenses light which travels back toward the excitation light source, and causes the light to be incident on the sensor
Data Source
AI summary
A device includes a light source; a first lens for condensing light emitted by the light source; a member for converting at least a portion of the condensed light; a sensor for detecting light traveling from the member back towards the light source; and a second lens for directing light traveling back toward the light source to the sensor. The first lens includes a curved first face facing the light source, and a flat second face opposite the first face; the second lens has a curved third face facing away from the first lens and with a curvature different from a curvature of the first face of the first lens, and a flat fourth face facing the second face of the first lens. The second lens is provided between the first lens and the wavelength converting member.