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Updated: Jun 17, 2026
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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
3-D computer-generated movies using a varifocal mirror
1Bell Telephone Laboratories, Murray Hill,New Jersey 07974, USA.
Applied Optics
|January 14, 2010
Summary
This study details using a varifocal mirror for autostereoscopic 3-D movies, achieving 15 volumetric images per second. Analytical and experimental methods enabled near-linear image scans for improved 3-D display.
Area of Science:
- Optics and Photonics
- Computer Graphics
- Display Technologies
Background:
- Autostereoscopic imaging enables 3-D viewing without glasses.
- Varifocal mirrors offer a dynamic method for depth control in displays.
- Previous methods faced challenges in achieving linear depth scanning for 3-D content.
Purpose of the Study:
- To describe the application of varifocal mirror autostereoscopic imaging for 3-D computer-generated movies.
- To investigate methods for achieving linear time scans of image volumes for even depth distribution.
- To address the nonlinear relationship between mirror displacement, driving voltage, and image position.
Main Methods:
- Utilizing a high-speed movie projector and an oscillating varifocal mirror.
- Implementing linear time scans for image volume distribution along the depth axis.
- Conducting analytical and experimental investigations to analyze system nonlinearities.
Main Results:
- Achieved projection of moving autostereoscopic images at 15 volumetric images per second.
- Identified nonlinearities in image position relative to mirror displacement and driving voltage.
- Attained approximately linear scans for image volume distribution at duty cycles approaching 90%.
Conclusions:
- Varifocal mirror technology is applicable to 3-D computer-generated movies.
- Addressing nonlinearities is crucial for uniform depth representation in autostereoscopic displays.
- High duty cycle operation of the varifocal mirror system can yield approximately linear depth scans.
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