Dual-Path Optical Biometer for Synchronous Eye Interface Detection
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Solution Overview
Problem
Conventional optical biometers take a long time to measure different positions/interfaces of the eye due to a long eye axis, leading to inefficient detection and synchronization issues.
Innovation Solution
The optical biometer employs dual optical paths with adjustable optical path difference generators and detectors, synchronized rotation speeds, and optical switches to enable simultaneous measurement of multiple eye interfaces, reducing measurement time and error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional optical biometer measures different positions/interfaces of the eye sequentially, then the measurement process is simple and device structure is not complex, but the detection time is long and synchronization cannot be achieved
Solution Approach 1:
The optical biometer divides the optical path into multiple independent channels (first optical path, second optical path, third optical path) that can simultaneously measure different eye interfaces. Each optical path is equipped with its own light source, coupler, and detector, enabling parallel measurement of cornea, lens, and retina without sequential scanning, thus resolving the contradiction between detection speed and device complexity.
2Measurement precision
If the optical biometer uses a single optical path for measurement, then the device structure is simple, but it cannot synchronously detect multiple positions/interfaces of the eye
Solution Approach 1:
The patent merges multiple optical measurement functions into a single integrated system where three optical paths converge at a common detector. Each optical path measures a different eye interface (cornea, lens, retina) simultaneously, and the detector integrates all signals. This merging approach achieves synchronous detection with high measurement precision while avoiding the need for completely separate independent measurement systems.
3Reliability
If the optical biometer measures along a long eye axis, then it can cover all eye interfaces, but the measurement time increases significantly
Solution Approach 1:
Instead of measuring all eye interfaces sequentially along the longitudinal eye axis, the patent introduces a dimensional transformation by creating multiple parallel optical paths that simultaneously access different interfaces. This transforms a one-dimensional sequential measurement process into a multi-dimensional parallel process, maintaining measurement completeness while dramatically reducing detection time.
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 solution allows for synchronous detection of eye interfaces, minimizing measurement time, reducing errors from eye/machine shaking, and minimizing signal loss, enhancing measurement efficiency.
Implementation Method 1
a first-stage coupler, a first second-stage coupler, a second second-stage coupler
Implementation Method 2
emit a first reflected light reflected from the first position/interface to the first second-stage coupler
Implementation Method 3
The first optical path difference generator is configured to receive the first second-stage light and emit the first second-stage light with a first optical path difference
Implementation Method 4
The first detector is configured to receive a first detection signal generated by the first second-stage coupler according to the first second-stage light with the first optical path difference and the first reflected light
Data Source
AI summary
An optical biometer including a light source, a first-stage coupler, a first and a second second-stage coupler, a first and a second optical path difference generator, a first and a second optical component set, a first and a second detection device is disclosed. The first-stage coupler receives an incident light from the light source and emits first and second first-stage lights. The first second-stage coupler receives the first first-stage light and emits first and second second-stage lights. The second second-stage coupler receives the second first-stage light and emits third and fourth second-stage lights. The first/second optical path difference generator generates the first/fourth second-stage light with the first/second optical path difference. The first/second optical component set emits the second/third second-stage light to a first/second position of an eye and receives a first/second reflected light. The first/second detector receives a first/second detection light.