Pan Camera Light Blocking Member Preventing Diffuse Reflection
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Solution Overview
Problem
In pan motion cameras, the rotation of the camera and lighting modules together leads to diffuse reflection of illumination light, causing interference and dark spots in captured images, especially when using infrared LEDs, as the lighting module is typically fixed, leading to a mismatch between the illumination and camera angles.
Innovation Solution
A light blocking structure is implemented, where a motor-driven rotating member carries both camera and lighting modules, with a light-blocking member fixed to the camera housing to prevent light from the lighting module from entering the camera lens, using a step and protrusions to block light reflections and emissions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the lighting module is fixed while the camera module rotates, then the angle of view photographed by the camera module deviates from the irradiation angle of the lighting module, causing dark spots in captured images, but if the lighting module rotates together with the camera module, then consistent illumination is achieved, but diffuse reflection of illumination light occurs and flows into the camera module
Solution Approach 1:
The patent extracts the harmful diffuse reflection light from the optical path by introducing a light blocking member that selectively blocks light from the lighting module while allowing camera module light to pass through. This separates the useful illumination function from the harmful reflection interference.
Solution Approach 2:
The light blocking member acts as an intermediary element positioned between the lighting module and the camera module. It mediates the interaction by blocking harmful diffuse reflection light while maintaining the rotational synchronization between the camera and lighting modules.
2Object-affected harmful factors
If a light blocking member is introduced to block diffuse reflection light, then interference in captured images is reduced, but the device complexity increases
Solution Approach 1:
The light blocking member is designed to serve multiple functions: it blocks diffuse reflection light from the lighting module, maintains structural support for the rotating components, and integrates with the existing camera housing structure. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The patent merges the light blocking function with the existing structural components of the camera housing. The light blocking member is integrated into the housing structure rather than being a completely separate assembly, thereby reducing overall device complexity while achieving the light blocking objective.
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 prevents interference from diffuse reflection, ensuring consistent illumination and preventing dark spots in images captured by the pan motion camera, even when using rotating lighting modules, thereby improving image quality.
Implementation Method 1
a light blocking member fixed to a side of a camera housing and blocking light emitted from the lighting module from flowing into a lens of the camera module
Data Source
AI summary
A pan motion camera including a motor providing a rotational driving force; a rotating member rotating around a rotation axis according to the rotation driving force; at least one camera module mounted on the rotating member and rotating together with the rotating member; at least one lighting module mounted on a position corresponding to the at least one camera module on the rotating member and rotating together without movement relative to the at least one camera module; and a light blocking member fixed to a side of a camera housing and blocking light emitted from the lighting module from flowing into a lens of the camera module without contacting the rotating member.