Industrial Technology Research Institute

Young Optics Inc.

Ming-Feng Ho

Chao-Shun Chen

Chau-Yuan Ke

Li-Han Wu

Hung-Lu Chang

Li-Ding Wei

Yea-Ru Sheu

I-Chih Tseng

A three dimensional printing apparatus including a carrying plate, a transparent plate, an elastic film, and a bump is provided. The transparent plate is disposed on the carrying plate. The elastic film is disposed on the transparent plate. The bump is disposed between the elastic film and the carrying plate. An interface between the transparent plate and the elastic film is in communication with an external space through a fluid channel between each bump and the elastic film. An orthographic projection area of the bump on the transparent plate is not more than &#xbc; of a surface area of the transparent plate.

Three dimensional printing apparatus and manufacturing method thereof

A three-dimensional printing apparatus includes a liquid tank, a curing platform and a light source device. A bearing member of the liquid tank is air proof, and forms an accommodating space with a side wall of the liquid tank. The curing platform is disposed at a first side of the bearing member corresponding to the accommodating space for allowing a workpiece to be cured on a surface thereof. After the accommodating space accommodates a liquid material, a curing light beam provided by a light source device disposed at a second side of the bearing member opposite to the accommodating space cures at least part of the liquid material on a surface of the curing platform via the bearing member. The use of a solid release material between the curing platform and the bearing member may be omitted. Methods for printing and releasing a three-dimensional workpiece are also provided.

Three-dimensional printing apparatus and methods for printing and releasing three-dimensional workpiece

A wire-suspended objective lens actuator structure and a method of assigning current pathways. The lens holder on the actuator structure has a group of focusing coils, a group of tracking coils and a group of slant adjustment coils. The coils are connected to four conductive wires. A first conductive wire controls the focusing coil and a second conductive wire controls the tracking coil. Similarly, a third conductive wire controls the slant adjustment coil. The ground terminals of all three groups of coils are connected in parallel to a fourth conductive wire. The fourth conductive wire serves as a common ground terminal. The control terminal of each group of coils is connected to a differential voltage-output current amplifier circuit or a differential voltage-output voltage amplifier circuit. Hence, the focusing, the tracking and the slant adjustment coils can be driven by differential voltages.

Wire-suspended objective lens actuator structure and method of assigning current pathways thereto

This invention relates to a method for detecting and compensating the disk tilt of an optical disk and an apparatus using it. The disk tilt causes the coma which degrades the carrier-to-signal ratio of a pickup. To reduce the coma induced by the disk tilt of an optical disk, the pickup of the present invention adapts a two-dimension (2-D) grating to produce a plurality of laser beams for detecting the disk tilt in the radial and tangential direction of the optical disk. In addition, according to the radial and tangential tilts of the disk, an actuation device adjusts a reflection angle of a reflective mean to change the incident angles of the laser beams for the compensation of the coma induced by the disk tilt of the optical disk.

Growing community of inventors

Hsinchu, Taiwan

Ming-Feng Ho