Company Filing History:
Years Active: 2010
Title: Kazutaka Tsukayama: Innovator in Laser Technology
Introduction
Kazutaka Tsukayama is an inventor based in Tokushima-shi, Japan. He is known for his contributions to the field of laser technology. Although he currently holds no granted patents, his innovative ideas are reflected in his latest patent applications.
Latest Patent Applications
Kazutaka Tsukayama has submitted several notable patent applications. One of his applications is for a **VERTICAL CAVITY SURFACE EMITTING LASER ELEMENT**. This element includes first and second light reflecting layers, first, second, and third semiconductor layer portions, an active layer, and first and second electrodes. The first semiconductor layer portion is disposed on the first light reflecting layer and contains a first impurity of a first conductivity type. The second semiconductor layer portion contains a second impurity of a second conductivity type. The third semiconductor layer portion is disposed on the second semiconductor layer portion, contains a third impurity of the first conductivity type at a higher concentration than a concentration of the first impurity, and has a thickness of 10 nm or more and less than 100 nm. The second light reflecting layer is disposed on the third semiconductor layer portion. The first electrode is electrically connected to the first semiconductor layer portion, while the second electrode is in contact with the third semiconductor layer portion.
Another application is for a **LIGHT EMITTING DEVICE**. This device includes a semiconductor laser element configured to emit laser light having a peak wavelength of 460 nm or less. It features a base body with a through-hole through which the laser light passes from the bottom to the top of the base body. A fluorescent member is disposed to close the through-hole, and a filter is configured to reflect fluorescence from the fluorescent member. The filter is positioned above and spaced apart from a plane including the lower end of the through-hole. The inner surface of the base body defining the through-hole includes an inclination surface that expands from the lower part of the through-hole toward the upper part. A reflection layer containing aluminum is formed on the inclination surface.
Conclusion
Kazutaka Tsukayama is an innovative inventor whose work in laser technology shows promise for future advancements. His latest patent applications reflect his commitment to developing cutting-edge solutions in the field.