Umax Data Systems, Inc.

Industrial Technology Research Institute

Wei-Hsin Hwang

Kou-Lung Tseng

Shih-Min Lo

Chien-Chin Chan

Yee-Haur Chiou

Jang-Yan Hung

Chao-Soon Chen

Chien-Chien Chung

A focusing and defocusing mechanism incorporated in a digital camera lens for simplifying the lens structure. The mechanism includes an outer lens barrel, a cam barrel having a slot of multiple slopes for adapting to the outer lens barrel, a guide pin affixed onto the outer wall of the outer lens barrel for rotating into the slot of the multiple slopes, and controlling elements affixed to the guide pin for controlling the distance and movement of the guide pin on the slot of multiple slopes.

Spring-free type focusing and defocusing mechanism for a digital camera

An optical scanning apparatus including a first optical unit and a second optical unit used to illuminate a document and direct the reflected light via a lens unit to the light sensing device; a movement mechanism used to move the first and second optical units in such a way that the optical path from the light source to the lens unit is always a fixed length. The movement mechanism includes a first driving unit having a first driving wheel, a first passive wheel, and a first transmission member coupling the first driving and passive wheels and affixed to the first optical unit; a second driving unit having a second driving wheel, a second passive wheel, and a second transmission member coupling the second driving and passive wheels and affixed to the second optical unit; and a driving motor. The diameter of the first driving wheel is of a predetermined multiple of that of the second driving wheel such that the optical path from the light source to the lens unit is always a fixed length.

Optical scanning apparatus

A detaining device for use in a disc drive for loading/unloading and detaining a disc, especially an optical CD-ROM disc, in the read/write position; it comprises: (a) a turn table for supporting the disc; (b) a slidable detainer having a recessed portion; and (c) a guiding plate having a guiding slot near the middle thereof, the slot being dimensioned for allowing the detainer to move back-and-forth in the direction of the loading/unloading of the disc. The turn table is slidably movable between the opened position and the read/write position during the loading/unloading of the disc, and has a conically-surfaced center jut which is projected from the center of the jut for receiving the disc via a central hole provided in the disc. The recessed portion is provided with a recessed surface matching the conically-surfaced center jut of the turn table so as to cooperatively and firmly detain the disc when the disc is in the read/write position. The guiding slot has a leveled portion and an upwardly-curved portion; the leveled portion is equally distanced from the turn table so as to allow the detainer to be engaged with the center jut of the turn table when the turn table is pushed into the read/write position during a loading operation of the disc, and the upwardly-curved portion provides increased distance between the slot and turn table away from the read/write position, so as to cause the detainer to be separated from the center jut of the turn table when the turn table is moved away from the read/write position during an unloading operation. A pair of magnetic members are provided in the center jut and the recessed portion so as to cause them to be in a locked position when the detainer and the turn table are simultaneously pushed into the read/write position.

Disc detaining device for disc drives

Growing community of inventors

Hsinchu, Taiwan

Wei-Hsin Hwang