Location History:
- Yokohama, JP (1995 - 2016)
- Tokyo, JP (2016)
Company Filing History:
11 out of 42,496 
5 out of 203 
4 out of 389 
Years Active: 1995-2016
Title: Fumio Haruna: Innovator in Laser Projection Technology
Introduction
Fumio Haruna is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of laser projection technology, holding a total of 16 patents. His innovative work has paved the way for advancements in display devices and laser control methods.
Latest Patents
One of Haruna's latest patents is a laser projection display device. This device includes a laser light source drive unit, an attribute amount detection unit for detecting the attribute amount of a picture signal, a light sensor for measuring the light amounts of the laser light sources, and a temperature sensor for measuring the temperatures of the laser light sources. The device is designed to correct the current vs. light amount output characteristics of the laser light sources based on the load amount of the picture signal per frame. It ensures that the light sources are driven at a predefined timing of the vertical blanking interval, while also controlling the threshold currents and current gains according to the measured temperatures.
Another notable patent is for a system and methods for laser beam display. This device features a dimming setting input unit, a first dimming processing unit with multiple dimming LUTs, and a second dimming processing unit that holds gains regarding the respective dimming steps. The light source drive unit operates based on reference results obtained from the dimming LUTs, allowing for precise control of the luminance of the emission beam of the laser diode.
Career Highlights
Fumio Haruna has worked with notable companies such as Hitachi, Ltd. and Hitachi Media Electronics Co., Ltd. His experience in these organizations has contributed to his expertise in laser technology and innovation.
Collaborations
Throughout his career, Haruna has collaborated with talented individuals, including Tomoki Kobori and Tsuneyuki Nozawa. These collaborations have further enhanced his work and contributions to the field.
Conclusion
Fumio Haruna is a distinguished inventor whose work in laser projection technology has led to significant advancements in the industry. His numerous patents reflect his dedication to innovation and excellence in engineering.