Company Filing History:
6 out of 9,152 
2 out of 32,513 
1 out of 1,719 
Years Active: 2011-2025
Title: Tsung-Dar Cheng: Innovator in Optical Technologies
Introduction
Tsung-Dar Cheng is an inventor based in Taipei, Taiwan. He is known for his innovative contributions to optical technologies. Although he currently holds no granted patents, his work in the field is noteworthy.
Latest Patent Applications
Tsung-Dar Cheng has submitted several patent applications that showcase his inventive spirit. One of his latest applications is for a "Reflective Structure for Optical Touch Sensing." This invention includes a transparent substrate, a plurality of microstructures, and a transmittive reflective layer. The transparent substrate has a surface that allows visible light to pass through, while the microstructures are designed to enhance optical touch sensing capabilities.
Another significant application is for an "Optical Etching Device for Laser Machining." This device comprises a laser light source and an optical head. The optical head features a transparent substrate, an opaque film, and a sub-wavelength annular channel. The design allows the incident beam from the transparent substrate to generate a surface plasma wave on the opaque film, enhancing the laser machining process.
Conclusion
Tsung-Dar Cheng is an inventive mind making strides in optical technologies through his latest patent applications. His work has the potential to influence various applications in the field.