Masakatsu Ota

Title: Masakatsu Ota: Innovator in Projection Exposure Technology

Introduction

Masakatsu Ota is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of projection exposure technology, holding a total of 3 patents. His work primarily focuses on enhancing the efficiency and precision of device manufacturing methods.

Latest Patents

Ota's latest patents include innovative designs for projection exposure apparatuses. One of his notable inventions is a projection exposure apparatus that features an illumination optical system designed to illuminate a pattern of a reticle using laser light from a continuous emission excimer laser. This apparatus also includes a projection optical system that projects the illuminated pattern onto a substrate. Additionally, it incorporates an adjusting device that modifies the optical characteristics of the projection optical system in response to changes in the laser's wavelength. Furthermore, a wavelength stabilizing device is integrated to ensure the laser light's wavelength remains stable, even when adjustments are insufficient.

Another significant patent by Ota describes a projection exposure apparatus that utilizes a lens system made from a substantially single glass material. This invention also includes a wavelength detecting device that monitors the laser light's wavelength and produces an output. A displacing device is employed to shift a mirror for resonance of the excimer laser based on the output from the wavelength detecting device.

Career Highlights

Masakatsu Ota is associated with Canon Kabushiki Kaisha, a leading company in imaging and optical products. His work at Canon has been instrumental in advancing the technology used in high-precision manufacturing processes.

Collaborations

Ota has collaborated with notable colleagues, including Naoto Sano and Hiroshi Echizen. Their combined expertise has contributed to the development of cutting-edge technologies in the field.

Conclusion

Masakatsu Ota's innovative work in projection exposure technology has significantly impacted the manufacturing industry. His patents reflect a commitment to enhancing precision and efficiency in device manufacturing methods.