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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

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Published on: July 5, 2016

Compact camera module testing equipment with a conversion lens.

¹Institute of Photonic Systems, National Chiao Tung University, Tainan City 71150, Taiwan. juiwenpan@gmail.com

|March 16, 2012

Summary

This summary is machine-generated.

This study introduces modified testing equipment for compact camera modules (CCMs), significantly reducing testing space and chart size. The new system offers faster adjustments and variable object distances for efficient camera module testing.

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Area of Science:

Optics and Photonics
Electrical Engineering
Manufacturing Technology

Background:

Compact camera modules (CCMs) require precise back focal length adjustment.
Conventional testing equipment occupies significant space and uses large test charts.
Efficient and compact testing solutions are needed for CCM manufacturing.

Purpose of the Study:

To propose modified testing equipment for CCM back focal length adjustment.
To demonstrate space-saving and efficiency improvements in CCM testing.
To enable variable object distances and high-speed chart changes.

Main Methods:

Development of modified testing equipment incorporating a conversion lens.
Utilizing a smaller, variable-sized testing chart.
Implementing high-speed chart changing mechanisms.
Achieving variable object distances.

Main Results:

The modified equipment produces a test chart of 38.32 mm, compared to 5000 mm for conventional equipment.
At a 2000 mm object distance, total track and test chart size were reduced to 8.3% of conventional equipment.
Significant reduction in overall testing space was achieved.

Conclusions:

The modified testing equipment offers substantial space savings for CCM testing.
The system provides enhanced efficiency through high-speed chart changes and variable object distances.
This innovation is crucial for optimizing compact camera module manufacturing processes.