Lens Device Light Splitting Module High Magnification
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Solution Overview
Problem
Conventional lens devices with high magnification and long focal length suffer from reduced aperture size due to thickness limitations, leading to insufficient light reaching the image sensor, resulting in poor image quality.
Innovation Solution
The lens device incorporates a light splitting module that splits incident light into multiple beams of different wavelengths, allowing each beam to be sensed by dedicated image sensing units, thereby increasing the image-sensing area and compensating for light insufficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the effective focal length of the lens module is increased to achieve higher magnification, then the magnification is improved, but the aperture becomes smaller due to thickness limitations, resulting in insufficient light reaching the image sensor
Solution Approach 1:
The patent divides the image sensing function into multiple independent image sensing units (first, second, third image sensing units) that respectively sense different wavelength ranges (first, second, third wavelength ranges). This segmentation allows each sensor to capture light in its optimized wavelength band, effectively increasing the total light capture capability without requiring a larger aperture, thus resolving the contradiction between high magnification and sufficient illumination.
2Productivity
If the effective focal length is increased to achieve higher magnification, then the magnification is improved, but the image quality deteriorates due to insufficient light reaching the sensor
Solution Approach 1:
The patent segments the image sensing function across multiple image sensing units with different wavelength sensitivities. This allows the system to maintain high magnification while improving image quality by capturing light across multiple wavelength ranges, compensating for the light loss inherent in long focal length systems.
Solution Approach 2:
Each image sensing unit is optimized for specific wavelength ranges (first, second, and third wavelength ranges), allowing each sensor to operate at its peak sensitivity. This local optimization of sensing capability across different spectral regions improves overall image quality while maintaining the high magnification capability provided by the long focal length lens module.
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 approach enhances image quality by effectively increasing the image-sensing area and addressing light insufficiency issues even with high magnification and long focal lengths, improving the overall image forming capability.
Implementation Method 1
a second surface reflecting the first light beam and allowing the second and third light beams to pass therethrough
Implementation Method 2
a first surface allowing the light that enters the first prism unit to pass therethrough
Implementation Method 3
a first light splitting film coated on the second surface allows light of wavelength of 500 nm-700 nm to pass therethrough
Implementation Method 4
the image sensing units are disposed at different sides of the light splitting module to sense the corresponding light beam
Data Source
AI summary
A lens device includes a lens module, a light splitting module and an image sensing module. The lens module includes an optical axis extended in a first direction. The light splitting module is configured to split light coming from the lens module into at least a first light beam and a second light beam, wherein the first light beam and the second light beam have wavelengths of different ranges. The image sensing module includes a plurality of image sensing units corresponding to the first light beam and the second light beam respectively, wherein the image sensing units are disposed at different sides of the light splitting module to sense the corresponding light beam.