Keigo Yarita

Title: Keigo Yarita: Optical Systems and Display Technology.

Introduction

Keigo Yarita is an inventor based in Tokyo, Japan, associated with Canon Kabushiki Kaisha. His patent work focuses on optical systems designed for display apparatuses, including arrangements that guide light between a display surface and a viewer’s pupil. His portfolio includes 2 patents.

Latest Patents

Yarita’s listed patents address optical designs that use transmissive reflective surfaces to manage light and improve display performance.

“Optical system including transmissive reflective surface and display apparatus including optical system” describes an optical system that guides a light beam from a display surface to a pupil surface. Its lens arrangement includes a first lens with a transmissive reflective surface, a second lens, and a third lens with another transmissive reflective surface. A quarter waveplate is placed on the pupil-side surface of the second lens, while the second and third lenses are spaced apart.

“Optical system and display apparatus” describes an optical system with a front group containing a positive-power lens and a rear group containing multiple lenses. The rear group has transmissive reflective surfaces positioned nearest the pupil surface and nearest the display surface. The design satisfies a specified inequality intended to improve optical performance.

Career Highlights

Yarita’s listed patent contributions concern optical systems for display apparatuses, with particular attention to lens configurations and transmissive reflective surfaces. These designs illustrate approaches to directing light through compact optical assemblies.

Collaborations

Yarita is associated with Canon Kabushiki Kaisha. His listed coworkers include fellow inventors Kazuto Ishida and Yu Miyajima.

Conclusion

Keigo Yarita’s patent work at Canon Kabushiki Kaisha centers on optical systems for display apparatuses, especially lens arrangements that guide light and support improved optical performance.