Shigetoshi Hiratsuka

Title: **Shigetoshi Hiratsuka: Innovator in Image Sensor Technology**

Introduction

Shigetoshi Hiratsuka is a prominent inventor based in Yokohama, Japan. With a total of six patents to his name, he has made significant contributions to the field of imaging technology, particularly in the development of image sensors and optical printing solutions. His innovative approach combines technical expertise with practical applications, driving progress in the industry.

Latest Patents

Hiratsuka's latest patents illustrate his keen insight into sensor technology. One notable invention is a **contact type image sensor having photoelectric conversion elements**. This sensor is designed with a transparent substrate that supports photoelectric conversion elements and employs an opaque film strategically placed over select elements. This arrangement allows the first photoelectric conversion element with the opaque film to function as a reference for light received, while the second element captures the light from an original document. This innovative design enables the extraction of signals that are free from variations in the luminance of the light source.

Another significant patent by Hiratsuka is for an **optical printer head with a light emitting diode array**. This invention features a mechanism to establish the distance between the emitting surface of a light emitting diode (LED) array chip and a rod lens array, incorporating two reference position levels. The design enhances productivity by eliminating the need for distance adjustments during assembly, thereby streamlining the manufacturing process.

Career Highlights

Shigetoshi Hiratsuka has held key positions in reputed companies, including Hitachi, Ltd. and Hitachi Cable, Inc. His work in these organizations has been crucial in pushing the boundaries of imaging technologies. His expertise not only expanded the capabilities of these companies but also contributed to the advancement of the industry as a whole.

Collaborations

Throughout his career, Hiratsuka has collaborated with esteemed professionals, including Hisao Iizuka and Kiyohiko Tanno. These partnerships have fostered innovative research and development, yielding patents that have had a lasting impact on imaging technology.

Conclusion

Shigetoshi Hiratsuka's contributions as an inventor significantly enhance our understanding and utilization of image sensors and optical systems. His patents showcase not only his innovative spirit but also his commitment to advancing technology. As he continues his work, the future holds great potential for further breakthroughs and improvements in the field.