HOLOGRAM LENS MANUFACTURING APPARATUS, HOLOGRAM LENS, METHOD OF MANUFACTURING HOLOGRAM LENS, INFORMATION RECORDING APPARATUS, AND INFORMATION REPRODUCING APPARATUS
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United States of America Patent
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Issued Date -
Oct 8, 2009
app pub date -
Apr 1, 2009
filing date -
Apr 4, 2008
priority date (Note) -
Abandoned
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Abstract
A hologram lens manufacturing apparatus includes: a separation unit that separates a light beam emitted from a light source into a reference light beam and an irradiation light beam; an irradiation light irradiating unit that collects the irradiation light beam so as to have a focal point at a predetermined focal position, and irradiates a hologram recording element located on the way to the focal point with the irradiation light beam; and a reference light irradiating unit that irradiates the hologram recording element with the reference light beam under a predetermined irradiation condition to record an interference pattern occurring between the irradiation light beam and the reference light beam as a hologram.
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