Kenji Yamada

Title: Kenji Yamada: Innovator in Optical Measurement and Eye Examination Technologies

Introduction

Kenji Yamada is a prominent inventor based in Narashino, Japan. He has made significant contributions to the fields of optical measurement and eye examination technologies. With a total of 7 patents to his name, Yamada's work has advanced the capabilities of various optical devices.

Latest Patents

Yamada's latest patents include an "Apparatus for Measuring Curvature" and an "Apparatus for Eye Examination." The apparatus for measuring curvature is designed to automatically guide two radiation beams reflected by an object to a linear image sensor. It determines the curvature of the object based on the signals obtained from the sensor, responding to the distance of the two radiation beams on the sensor. Additionally, the apparatus features an image rotator positioned between the radiation beam generation means and the object. The eye-examining apparatus consists of a first positive lens unit, a negative lens unit, a second positive lens unit, a third positive lens unit, and a target mark arranged in sequence from the examined eye. The third positive lens unit is movable along the optical axis, while an astigmatic system is rotatable about the optical axis, allowing for precise adjustments in diopter and astigmatism.

Career Highlights

Throughout his career, Kenji Yamada has worked with notable companies such as Nippon Kogaku K.K. and Oiles Industries Co., Ltd. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Yamada has collaborated with esteemed colleagues, including Eiji Satoh and Masayuki Kohama. Their joint efforts have furthered advancements in the optical field.

Conclusion

Kenji Yamada's innovative work in optical measurement and eye examination technologies has made a lasting impact on the industry. His patents reflect a commitment to enhancing the functionality and accuracy of optical devices.