Yutaka Okada

Title: Yutaka Okada: Innovator in Light Emitting Devices

Introduction

Yutaka Okada is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of light emitting devices, holding a total of 5 patents. His work focuses on enhancing light extraction efficiency and improving display technologies.

Latest Patents

Okada's latest patents include innovative designs for light emitting devices, surface light sources, and liquid crystal display devices. One of his notable inventions is a light emitting device that features a substrate with a phosphor layer containing an LED element. This element emits primary light, while a fluorescent particle absorbs part of this light and emits secondary light. The device also includes a transparent resin layer that enhances light extraction efficiency by satisfying a specific geometric relationship.

Another significant patent involves a light emitting device that incorporates a semiconductor light emitting element covered by a sealing member and a lens with multiple convex parts. This design allows for a non-concentric luminance distribution, which is crucial for creating display devices that are thin and exhibit minimal unevenness in luminance and chromaticity.

Career Highlights

Yutaka Okada is associated with Sharp Kabushiki Kaisha Corporation, where he continues to innovate in the field of light technology. His work has been instrumental in advancing the capabilities of display devices and lighting solutions.

Collaborations

Okada has collaborated with notable coworkers such as Shin Ito and Junichi Nakamura. Their combined expertise has contributed to the successful development of various light emitting technologies.

Conclusion

Yutaka Okada's contributions to the field of light emitting devices have significantly impacted display technology and lighting solutions. His innovative patents reflect a commitment to enhancing efficiency and performance in these areas.