Company Filing History:
Years Active: 1994-1998
Title: **Innovative Contributions of Akira Ishida**
Introduction
Akira Ishida is a notable inventor based in Tsuchiura, Japan. With a focus on precision measurement technologies, he has contributed to advancements that significantly enhance the accuracy of various measurement processes. Ishida holds two patents, reflecting his commitment to innovation in his field.
Latest Patents
Ishida's latest patents include an apparatus for measuring the refractive index of a medium using light and an apparatus for measuring straightness. The first patent involves a second harmonic generation (SHG) device, which is utilized for wavelength conversion. The device employs a direction-of-polarization rotating unit that rotates the polarization of light beams—typically by 45 degrees—before directing them into the SHG device. This innovative approach minimizes the attenuation of light intensity during wavelength conversion, allowing for a more accurate measurement of the refractive index of the medium compared to conventional methods.
The second patent outlines a method for measuring straightness with high precision, utilizing two laser beams of different wavelengths. This design effectively eliminates measurement errors caused by deflection due to turbulence in the medium through which the lasers propagate. The apparatus features a position sensor that receives the two laser beams; it calculates the deflection amounts and offsets these to provide an accurate position measurement, thus enabling precise straightness measurement.
Career Highlights
Akira Ishida is associated with Nikon Corporation, a leading company in imaging and optical products. His work within Nikon showcases his dedication to the development of sophisticated measurement technologies that enhance performance in various applications.
Collaborations
During his career, Ishida has collaborated with talented colleagues, including Hitoshi Kawai and Jun Kawakami. These partnerships highlight the collaborative nature of innovation and contribute significantly to the development of cutting-edge technologies in his field.
Conclusion
Akira Ishida's contributions to the field of measurement technology illustrate the importance of innovation and collaboration in scientific advancements. His patents not only demonstrate his inventive spirit but also provide valuable tools that enhance accuracy in measurement, impacting various industries positively.