Yuzo Shimizu

Title: Yuzo Shimizu: Optical Semiconductor Device Inventor.

Introduction

Yuzo Shimizu is an inventor based in Mukou, Japan, whose work includes optical semiconductor devices designed to improve the accuracy of signals read from optical recording media. His listed portfolio includes 2 patents. The patent descriptions identify Matsushita Electronics Corporation as the company associated with his work.

Latest Patents

Shimizu’s listed inventions focus on controlling light within semiconductor devices to support more precise signal detection.

“Optical semiconductor device” describes a design in which a semiconductor laser is mounted in a recessed portion of a semiconductor substrate. The arrangement directs the laser’s optical axis parallel to the substrate surface and reflects the emitted light toward the recording medium. A light-receiving portion detects the returned signal, while designated light-intercepting regions help limit unwanted light.

“Optical semiconductor device with enhanced light reception” addresses stray light that could otherwise create excess carriers and distort the detected signal. Its design places a light-shielding area between the laser and the signal-detection element, blocking stray light before it reaches the receiving area. This helps the device produce a more accurate signal from an optical recording medium.

Career Highlights

The available information highlights Shimizu’s contributions to optical semiconductor technology, particularly device structures that manage emitted and stray light. His listed patents reflect a shared goal: improving the precision of optical signal detection.

Collaborations

Masanori Hirose and Shin-ichi Hamaguchi are identified as Shimizu’s coworkers. Matsushita Electronics Corporation is the company associated with his patent work.

Conclusion

Yuzo Shimizu’s listed inventions use recessed semiconductor structures and light shielding to reduce signal interference and improve optical detection accuracy.