Holographic Printer Shutter with Rotating Arc Opening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Holographic printers are vulnerable to vibrations caused by the opening and closing of mechanical shutters, which degrade the quality of hologram recordings.
Innovation Solution
A holographic printer using a vibration-free mechanical shutter with a rotating arc-shaped opening, controlled by motors to adjust exposure time and period, ensuring precise and vibration-free exposure of light to the recording medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a mechanical shutter is used to control light exposure, then the exposure time can be controlled, but vibrations are generated during opening/closing which degrade hologram recording quality
Solution Approach 1:
The patent replaces the traditional mechanical shutter system with an acousto-optic shutter that uses acoustic waves to modulate light. The acousto-optic modulator converts electrical signals into acoustic waves that diffract light, enabling precise exposure control without mechanical moving parts, thereby eliminating vibration-induced degradation of hologram recording quality
Solution Approach 2:
The patent changes the operational parameters of the shutter system by using acoustic frequency and electrical signal modulation instead of mechanical opening/closing motion. The exposure time is controlled by varying the duration of electrical signals applied to the acousto-optic modulator, allowing precise timing without generating vibrations that would affect hologram recording precision
2Loss of time
If a mechanical shutter is used, then the structure is simple, but the exposure time cannot be precisely adjusted and vibrations occur
Solution Approach 1:
The patent replaces the mechanical shutter system with an acousto-optic shutter that uses acoustic waves to modulate light. The acousto-optic modulator converts electrical signals into acoustic waves that diffract light, enabling precise exposure control without mechanical moving parts, thereby eliminating vibration-induced degradation of hologram recording quality
Solution Approach 2:
The patent changes the operational parameters of the shutter system by using acoustic frequency and electrical signal modulation instead of mechanical opening/closing motion. The exposure time is controlled by varying the duration of electrical signals applied to the acousto-optic modulator, allowing precise timing without generating vibrations that would affect hologram recording precision
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 solution prevents degradation of hologram recording quality by eliminating vibrations during shutter operation and allows for adjustable exposure times and periods, enhancing recording precision.
Implementation Method 1
a first rotation plate having an arc-shaped opening formed thereon to expose object light generated by the hologram fringe pattern; and a first motor configured to rotate the first rotation plate
Implementation Method 2
a modulator configured to generate a holographic fringe pattern on a hogel basis by modulating light emitted from the light source
Implementation Method 3
a first rotation plate having an arc-shaped opening formed thereon to expose object light generated by the hologram fringe pattern; a length of the arc on the first rotation plate may be determined by an exposure time of the shutter
Data Source
AI summary
Provided is a holographic printer using a mechanical shutter having adjustable exposure time and no vibration. The holographic printer according to an embodiment of the present invention comprises: a light source; a modulator for generating a holographic fringe pattern in hogel units; a stage on which a hologram recording medium is placed; a driving part for moving the position of the stage in hogel units; and a shutter for periodically exposing an object light due to the holographic fringe pattern generated by the modulator to the hologram recording medium. The shutter comprises: a rotation plate having formed therein an arc-shaped opening which exposes the object light due to the holographic fringe pattern; and a motor for rotating the rotation plate. Therefore, the exposure period and exposure time of the shutter can be variously adjusted by adjusting the rotational state of the rotation plates having the arc-shaped opening formed therein.