Night Vision Device Movable Light Guiding Cavity
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Solution Overview
Problem
Existing night vision devices face challenges in increasing night vision distance and image quality without compromising the resolution of light-sensitive chips or the illumination capability of auxiliary light sources, often resulting in energy waste due to fixed light-output structures.
Innovation Solution
A night vision device with a movable light guiding cavity and an adjustable auxiliary light source that matches the irradiation range to the imaging range of the light-sensitive chip, allowing for effective energy use and improved distance and image quality through optical and digital zoom adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of the light-sensitive chip is increased to improve image quality, then image quality is improved, but sensitivity is reduced and night vision distance is shortened
Solution Approach 1:
The patent applies the dynamics principle by making the light guiding cavity movable instead of fixed. The light guiding cavity can be adjusted to change the irradiation range of the auxiliary light source, allowing the system to adapt dynamically between image quality and sensitivity requirements based on zoom level and imaging conditions
2Length of moving object
If zoom is used to increase the night vision distance, then night vision distance is increased, but the auxiliary light source needs corresponding illumination distance which increases the number of lights
Solution Approach 1:
The patent uses a movable light guiding cavity that can be adjusted to match different imaging ranges. When zoom is applied to increase night vision distance, the light guiding cavity is adjusted to provide corresponding illumination distance, eliminating the need to increase the number of light sources
3Device complexity
If a fixed light-output structure is used by the auxiliary light source, then the structure is simple, but energy waste occurs when the focal length is shortened
Solution Approach 1:
The patent converts the fixed light-output structure into a dynamic one by making the light guiding cavity movable. The cavity can be adjusted to match different focal lengths and imaging ranges, ensuring that the auxiliary light source energy is fully and effectively used on the scene to be imaged without waste
Solution Approach 2:
The patent changes the parameter of the light guiding cavity from fixed to adjustable/movable. By adjusting the position or configuration of the light guiding cavity, the irradiation range of the auxiliary light source is adapted to match the imaging range of the light-sensitive chip, optimizing energy utilization across different focal lengths
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 solution enhances night vision distance and image quality without altering hardware components, ensuring efficient energy use and effective illumination across varying zoom factors.
Implementation Method 1
a first light-sensitive chip which is at least sense infrared light
Implementation Method 2
The auxiliary light source may be at least able to emit infrared light
Data Source
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AI summary
A night vision device, comprising a first light-sensitive chip, a first lens group (101), a first display screen, an image processing system and a control system for adjusting an imaging range of the first light-sensitive chip by adjusting times of optical zooming of the first lens group and/or digital zooming of the image processing system. The night vision device further comprises an auxiliary illumination module (103), which comprises an auxiliary light source and a light guiding cavity; the auxiliary light source at least can emit infrared light; a light ray emitted by the auxiliary light source is emitted via the light guiding cavity; the light guiding cavity has a movable adjustment component for adjusting an irradiation range of the emitted light ray in a manual manner or by means of automatic control by the control system; and the irradiation range is adapted to the imaging range of the first light-sensitive chip. The night vision device according to the present invention can improve a night visual range and imaging quality without changing the level of hardware.