Industrial Technology Research Institute

Kwen-Jin Lee

Tzuan-Ren Jeng

Jau-Jiu Ju

Chi-Shen Chang

Shyh-Jier Wang

Chau-Yuan Ke

Chun-Te Wu

Ming-Tsan Peng

Hai-Jo Huang

Lei-Ming Yang

A precision motion transducer is provided in the present invention. The precision motion transducer is provided with a first elastic body. An end of the first elastic body is connected to an end of a second elastic body, while the other end of the second elastic body is fixed to a base via a fixing means. A motion input means is connected to the other end of the first elastic body for inputting motion inputs, while a motion output means is provided at a location where the first elastic body is connected with the second elastic body for outputting motion outputs. The modulus of elastic of the first elastic body is smaller than the modulus of elastic of the second elastic body, whereby relatively large motion inputs can be converted to more precise and finer motion inputs, so as to attain precise positioning control.

Precision motion transducer utilizing elasticity ratio

An optical pickup head and an electromagnetic actuating device thereof are provided. The electromagnetic actuating device is used to move an objective lens carrier having an objective lens assembly to form an optical pickup head. The electromagnetic actuating device includes at least a magnet, at least a coil, and at least a yoke. The magnet is spaced apart from the objective lens carrier by a distance, and the coil is disposed at the objective lens carrier, for generating an electromagnetic force to interact with the magnet. The yoke is spaced apart from the objective lens carrier by a distance, in which the yoke has a protruding part that extends towards the objective lens carrier and is used to attract magnetic flux lines produced by the magnet, and thus making the magnetic flux that passes through the coil be distributed evenly.

Optical pickup head and electromagnetic actuating device thereof

Growing community of inventors

Hsinchu, Taiwan

Kwen-Jin Lee