Optical: systems and elements – Deflection using a moving element – By frustrated total internal reflection
Reexamination Certificate
2007-05-08
2007-05-08
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
By frustrated total internal reflection
C359S207110, C359S211200, C359S833000
Reexamination Certificate
active
11342722
ABSTRACT:
The inner drum exposure apparatus records an image by scanning a recording material held on an arcuate inner peripheral surface of a support with a light beam that is emitted from a light source and modulated in accordance with image information and deflected by a total reflection mirror plane of a rotatably driven scanning device such as a spinner. The scanning device includes a first cylindrical lens for condensing the incident light beam incident into the total reflection mirror plane along a first plane containing an optical axis of the light beam and a second cylindrical lens for scattering the light beam along a second plane orthogonal to the first plane. The incident light beam is shaped into a beam spot of an elliptical configuration whose major axis is orthogonal to a beam deflecting/scanning direction by the first and second cylindrical lenses.
REFERENCES:
patent: 5367399 (1994-11-01), Kramer
patent: 5825555 (1998-10-01), Oono et al.
patent: 6121996 (2000-09-01), Gelbart
patent: 6369929 (2002-04-01), Takada
patent: 10-133132 (1998-05-01), None
Fujifilm Corporation
Phan James
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