Optical Unit Rolling Correction Heat Dissipation
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Solution Overview
Problem
Optical units with imaging elements face increased heat generation due to higher pixel counts, necessitating an efficient heat dissipation mechanism to maintain performance.
Innovation Solution
An optical unit with a rolling correction function, featuring a rotation member with a heat dissipating member and a rotation supporting mechanism, where the imaging element and heat dissipating member overlap with the rotation shaft, allowing for direct and efficient heat transfer via a conductive layer, and a rolling magnetic driving mechanism for axis correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels in the imaging element is increased, then the imaging performance is improved, but the heat generated from the imaging element increases
Solution Approach 1:
A heat dissipating member is introduced as an intermediary component between the imaging element and the rotation shaft. This heat dissipating member receives heat from the imaging element and transfers it to the rotation shaft, which has good heat dissipation properties. The heat dissipating member acts as a thermal intermediary that manages the heat flow path, preventing direct heat accumulation at the imaging element while utilizing the rotation shaft's rotational capability for heat dissipation.
Solution Approach 2:
The rotation shaft, which is already a necessary component for the rolling correction mechanism, is utilized for dual purposes: both rotational movement and heat dissipation. By fixing the heat dissipating member to the rotation shaft, the system leverages the existing rotation shaft structure to provide additional heat dissipation functionality without requiring a separate dedicated heat sink, thereby achieving self-service heat management.
2Temperature
If a heat dissipating structure is added to the optical unit, then heat dissipation performance is improved, but the device complexity increases
Solution Approach 1:
The heat dissipating member is designed to serve multiple functions simultaneously: it acts as a heat dissipation component, a structural support element for the imaging element, and a thermal transfer medium. By integrating these functions into a single component that can be fixed to the rotation shaft, the system achieves improved heat dissipation without proportionally increasing device complexity, as the same component performs multiple roles.
Solution Approach 2:
The heat dissipation function is merged with the existing rotation shaft assembly rather than being implemented as a completely separate system. The heat dissipating member is fixed to the rotation shaft, combining the rotational mechanism and heat dissipation functions into an integrated assembly. This merging approach reduces overall device complexity compared to adding a standalone heat sink system with its own mounting structure and thermal interface materials.
3Temperature
If the heat dissipating member is positioned away from the imaging element, then the heat transfer path is longer, but the thermal interference with the optical path is reduced
Solution Approach 1:
The heat dissipation function is extracted from the optical path and assigned to a separate thermal pathway through the heat dissipating member. By positioning the heat dissipating member to receive heat from the imaging element and transfer it to the rotation shaft, the thermal interference with the optical path is minimized. The heat dissipation process occurs through structural components rather than directly in the optical path, separating thermal management from optical function.
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 enables effective heat dissipation from the imaging element to the rotation shaft, reducing thermal issues and enhancing the optical unit's performance by transmitting heat in the shortest route, while also correcting shake on the optical axis.
Implementation Method 1
the heat dissipating member is arranged on the counter object side of the circuit board to receive a heat from the circuit board... transmit heat that is generated from the imaging element, from the circuit board to the heat dissipating member, and then transmitting the heat from the heat dissipating member to the rotation shaft
Implementation Method 2
a rolling magnetic driving mechanism that causes the rotation member to rotate on an optical axis of the optical element
Data Source
AI summary
An optical unit with rolling correction function is provided and performs rolling correction by fixing a circuit board on which an imaging element is mounted and a heat dissipating member to a rotation member, transmitting heat from the circuit board to the heat dissipating member, and rotating the rotation member. A rotation shaft of a rotation supporting mechanism is fixed to the rotation member via the heat dissipating member. Accordingly, it is possible to dissipate heat by transmitting heat that is generated from the imaging element, from the circuit board to the heat dissipating member, and then transmitting the heat from the heat dissipating member to the rotation shaft. The imaging element and the heat dissipating member overlap with the rotation shaft at an identical position when the imaging element and the heat dissipating member are seen from an optical axis direction.