Design of miniature HD–DVD optical pick-up head using a Penta prism

Sun, Wen Shing; Lee, Tsung Xian; Sun, Ching Cherng; Lin, Ching Huang; Chen, Chien Yue

doi:10.1080/0950034042000275397

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…The use of the same collimator and objective lens designs is based on the HD-DVD specification [8,9]. However, there will be an additional spherical aberration in the DVD and CD optical paths.…”

Section: The Combined Hd-dvd Dvd and CD Designs With Prismsmentioning

confidence: 99%

The Design of an Integrated Pick-Up Head for High-Density Digital Versatile Disk, Digital Versatile Disk and Compact Disk

Sun¹,

Sun²

2007

KEM

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A novel design of triple-wavelength design for a compact optical pickup head is presented here. We propose the use of two rhomboid beam-splitter prisms for HD-DVD, DVD and CD devices to align signals with three different wavelengths on the same optical axis. The light is collimated by a collimating lens. The parallel beams are incident on the wavelength selector. The wavelength selector separates the wavelengths with different numerical apertures. The different wavelength signals are focused on the disc by an objective lens.

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Section: The Combined Hd-dvd Dvd and CD Designs With Prismsmentioning

confidence: 99%

The Design of an Integrated Pick-Up Head for High-Density Digital Versatile Disk, Digital Versatile Disk and Compact Disk

Sun¹,

Sun²

2007

KEM

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“…For this reason, scanning pentaprisms have also been used in optical pick-up heads 9 and in long trace profilers ͑LTPs͒ 10 for enhanced system stability. 1͑a͔͒.…”

Section: Introductionmentioning

confidence: 99%

Measurement of a <inline-formula><math altimg="none" display="inline" overflow="scroll"><mrow><mn>2</mn><mtext>-</mtext><mtext>meter</mtext></mrow></math></inline-formula> flat using a pentaprism scanning system

2007

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Precise manufacturing of optical flats requires precise characterization of the surface. A scanning pentaprism system is ideal for use as an absolute and precise test for an optical flat. Such a system was built and used to test a 2-m diameter flat mirror. This system uses light from an autocollimator that is reflected from two pentaprisms to project reference beams of light onto the flat mirror. The light reflected from the mirror back through the pentaprisms provides information on low order optical aberrations in the flat mirror. We report results of the test on a 2-m flat, characterizing the errors and their sources. There is enormous potential for our system to be used to test larger flats and even curved surfaces, made of either a glass or a liquid.

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