DMD Cooling Device Side Surface Contact Water Pump
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Solution Overview
Problem
Conventional cooling devices for high-luminance projectors, particularly those with digital mirror devices (DMDs), are ineffective in managing increased heat generation due to the difficulty in integrating a cooling mechanism near the reflection surface, leading to potential device failure.
Innovation Solution
A cooling device with a contact member that contacts the side surface of a support frame surrounding the DMD's light receiving surface, utilizing a water cooling system to efficiently transfer heat away from the device, thereby reducing thermal resistance and effectively cooling the DMD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a metallic flat plate is brought into contact with the plane parallel to the reflection surface to absorb heat, then the heat absorption capability is improved, but the cooling effectiveness is insufficient due to long heat transmission path
Solution Approach 1:
The contact member changes from contacting the front surface (parallel to reflection surface) to contacting the side surface (transverse to reflection surface) of the support frame. This dimensional change in contact position dramatically shortens the heat transmission path from the light receiving surface to the cooling unit, thereby improving cooling effectiveness while maintaining heat absorption capability.
2Adaptability or versatility
If optical parts such as prisms are disposed on the side of the reflection surface, then the optical functionality is improved, but the ease of integrating cooling mechanism is worsened
Solution Approach 1:
The cooling contact member is positioned on the side surface of the support frame rather than the front surface, utilizing a different spatial dimension. This allows the cooling mechanism to be integrated without interfering with the optical parts (prisms) that are disposed on the front side, thus maintaining optical functionality while enabling effective cooling integration.
3Illumination intensity
If the laser beam output is increased to achieve higher luminance, then the illumination intensity is improved, but the heat generation is increased leading to potential failure
Solution Approach 1:
The heat is extracted from the light receiving surface through the support frame side surface contact member, separating the heat removal function from the optical function. This allows the laser beam output to be increased for higher luminance while the extracted heat is efficiently removed through the cooling unit, preventing heat-related failures.
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 proposed cooling device significantly reduces the temperature of the DMD by shortening the heat transmission path and increasing the contact area, outperforming conventional methods in heat management and preventing device failure.
Implementation Method 1
The contact member has a first contact surface that is brought into contact with a side surface in a direction transverse the light receiving surface at the support frame. The cooling unit is connected to the contact member and cools the contact member.
Data Source
AI summary
A cooling device is adapted to cool a DMD including a reflection surface and a support frame for supporting the outer edge of the reflection surface, and includes first and second contact portions and a water cooling pump. The first and second contact portions each have a contact surface that is brought into contact with a side surface in a direction transverse the reflection surface at the support frame. The water cooling pump is connected to the first and second contact portions so as to cool the first and second contact portions.