1
Jau Jiu Ju, Tsung Ming Yang, Tsung Kai Chang: Objective lens for optical pick-up head of optical disk drive. Industrial Technology Research Institute, Oppenheimer Wolff & Donnelly, July 7, 1998: US05777803 (31 worldwide citation)

An objective lens for an optical disk drive is disclosed. The objective lens comprises four portions each having a aspherical surface for focusing a light beam of a designated wavelength to a designated focal point. The first portion has a first aspherical surface that focuses the light beam to a fi ...


2
Jau jiu Ju: Optical pickup head using multiple laser sources. Industrial Technology Research Institute, W Wayne Liauh, November 27, 2001: US06324150 (21 worldwide citation)

An optical pickup head which utilizes two or three laser beams of different wavelengths for reading or writing data on different kinds of optical recording media through a same optical output path is disclosed. According to the present invention, a beam shaper located in optical paths of multiple la ...


3
Jau Jiu Ju, Shin Ter Tsai, Pei Yih Liu, Tsung Ming Yang: Two-wavelength laser pick-up head for a DVD. Industrial Technology Research Institute, Rabin & Champagne PC, October 26, 1999: US05974020 (12 worldwide citation)

A two-wavelength laser pick-up head used for accessing DVD, CD, CD-R and CD-E systems. The two-wavelength laser pick-up head includes a shorter wavelength laser optical path for reading the data from a DVD system, and a longer wavelength laser optical path for reading the data from a CD or CD-R syst ...


4
Zu Wen Chao, Tsung Ming Yang, Shin Ter Tsai, Jau Jiu Ju, Pei Yih Liu: Single-lens optical pick-up head for accessing a DVD disc and a CD disc by switching between two optical states. Industrial Technology Research Institute, Rabin Champagne & Lynt P C, May 5, 1998: US05748602 (12 worldwide citation)

A single-lens optical pick-up head has a laser diode, a beam splitter, a collimator, a polarizing light converter, a polarization controller, a polarizing beam splitter, a first quarter-wavelength plate, a mirror, a second quarter-wavelength plate, a convex mirror, an objective lens and a photodetec ...


5
Jau Jiu Ju, Der Ray Huang, Tzu Ping Yang: Sieving apparatus for a bio-chip. Industrial Technology Research Institute, Jiawei Huang, J C Patents, November 20, 2001: US06320660 (11 worldwide citation)

The invention is directed to a sieving apparatus for a bio-chip, which has a light source, a HOE unit, a splitter, an objective lens, a filter, and an optical signal sensor. The HOE unit is coupled with a light source, so as to diffract the light into a zeroth order beam and a first order beam. The ...


6
Jau Jiu Ju, Tsung Ming Yang, Shin Ter Tsai, Pei Yih Liu: Optical grating for a bifocal access head of optical disk drive devices. Industrial Technology Research Institute, Pillsbury Madison & Sutro, May 18, 1999: US05905707 (7 worldwide citation)

A grating pattern for a bifocal optical pick-up head assembly of an optical compact disc drive device is disclosed. The device is capable of accessing data on the surface of compact discs arranged in either the DVD or the CD formats. The optical head assembly has an optical system that includes a gr ...


7
Jau Jiu Ju, Eric G Lean, Der Ray Huang: Prism-type objective lens for the pickup head of an optical disc drive capable of driving two types of optical discs. Industrial Technology Research Institute, Thomas Kayden Horstemeyer & Risley, March 7, 2000: US06034797 (7 worldwide citation)

A prism-type objective lens is provided for use in the pickup head of an optical disc drive capable of driving two types of optical discs such as a CD and a DVD. The prism-type objective lens allows the pickup head to be made more compact in size with reduced structural complexity, and also allows t ...


8
Hsi Fu Shih, Jau Jiu Ju, Tzu Ping Yang, Wei Chih Lu, Mark O Freeman, Der Ray Huang, Carl Y Yang: Multiple-beam holographic optical pick-up head. Industrial Technology Research Institute, W Wayne Liauh, April 9, 2002: US06369377 (7 worldwide citation)

The present invention discloses a multiple-beam holographic optical pick-up head, which has the advantages of the multiple-beam optical pick-up head and the holographic optical pick-up head and can increase the light usage efficiency. This invention uses the property that a polarized diffractive opt ...


9
Jau Jiu Ju, Eric G Lean, Der Ray Huang: Prism-type objective lens for the pickup head of an optical disc drive capable of driving two types of optical discs. Industrial Technology Research Institute, Thomas Kayden Horstemeyer & Risley, October 24, 2000: US06137637 (6 worldwide citation)

A prism-type objective lens is provided for use in the pickup head of an optical disc drive capable of driving two types of optical discs such as a CD and a DVD. The prism-type objective lens allows the pickup head to be made more compact in size with reduced structural complexity, and also allows t ...


10
Zu Wen Chao, Jau Jiu Ju: Miniature optical access head apparatus. Industrial Technology Research Institute, Rabin Champagne & Lynt P C, January 27, 1998: US05712843 (6 worldwide citation)

A miniature optical head for optical disk drive units is disclosed. The head assembly comprises a polarization light-splitter means having a block-shaped body. A laser light source generates a laser light beam at a predetermined wavelength and illuminating into the block body of the polarization lig ...