Shuji Hoshika

Title: Innovations of Shuji Hoshika

Introduction

Shuji Hoshika is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of optical measurement, particularly in the area of eye refraction. With a total of 5 patents to his name, Hoshika's work has advanced the technology used in vision correction and measurement.

Latest Patents

Hoshika's latest patents include a "Method and device for measuring eye refraction errors." This innovative method involves projecting a plurality of infrared patterns onto the eye being measured. The reflected light is directed onto light-sensitive detectors, and the outputs are processed through bandpass filters, an automatic gain control circuit, and an A/D converter to a microprocessor. The microprocessor analyzes the digitized outputs to calculate refraction powers using a disclosed nonlinear regression technique. The refraction errors of the eye, along with a reliability coefficient, are calculated based on the determined refraction powers.

Another significant patent is the "Angle measuring device with line sensor." This device features a scale board that carries a scale with a predetermined pitch. A light source projects this scale onto an array of sensors, which have a pitch that is substantially but not exactly equal to the scale's pitch. By comparing successive pairs of sensor outputs, the angular position of the scale board can be determined with a resolution much smaller than the scale pitch.

Career Highlights

Shuji Hoshika is currently associated with Asahi Kogaku Kogyo Kabushiki Kaisha, a company known for its advancements in optical technology. His work has been instrumental in developing innovative solutions for measuring eye refraction, which is crucial for improving vision correction methods.

Collaborations

Hoshika has collaborated with notable colleagues such as Yukiyasu Nishikawa and Ikuzo Okamoto. Their combined expertise has contributed to the success of various projects and patents in the field of optical measurement.

Conclusion

Shuji Hoshika's contributions to the field of optical measurement and eye refraction technology are commendable. His innovative patents reflect a commitment to advancing vision correction methods, making a significant impact in the industry.