E-pin Optical Industry Co., Ltd.

Ether Precision Inc.

Ting-Kuo Hua

Yu-Hsi Wang

Shih-Feng Lu

A focusing-free microlens assembly includes a holder and a plurality of optical lenses mounted on the holder. Each of the holder and the optical lenses has a tolerance, and a combinative tolerance of the tolerances of the holder and the optical lenses is less than a depth of focus.

Focusing-free microlens assembly and the method of making the same

A USB drive mass storage device mainly includes a housing having a predetermined size, in which an optical fingerprint identification system is mounted for use with the USB drive. A printed circuit board (PCB) is located on an inner bottom of the housing with a universal serial bus (USB) plug projected from a front end of the housing. The optical fingerprint identification system includes an image sensing element and an optical prism located across front and rear ends, respectively, of the PCB, so that a space above the PCB provides an optical path for the optical fingerprint identification system. The housing is provided at a rear end with a pivotally connected rear cover to enable easy protection of and access to a fingerprint surface on the optical prism.

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Taipei, Taiwan

Ting-Kuo Hua