6 July 1989 Application Of Light Valves For Continuous-Tone Printing
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Proceedings Volume 1079, Hard Copy Output; (1989) https://doi.org/10.1117/12.952808
Event: OE/LASE '89, 1989, Los Angeles, CA, United States
New opportunities are emerging in the graphic-arts pre-press market stimulated by the need for digitally created images. To meet this need, we have designed a cost-effective three-color digital printer using PLZT light valves. Transparent lead lanthanum zirconate titanate (PLZT) ceramic crystals when used as a linear modulator offer a number of significant benefits. The primary advantage is that the light valve is an efficient modulator of incoherent light providing a broad spectral output ranging from 400nm to well into the infrared region. In addition, light valves offer the advantages of being small, low cost, have a wide dynamic range (>1000 to 1), and can be used with simple optical designs. The characteristics of the PLZT material plays an important role in the performance of the light valve. A number of variables such as ceramic composition, electrode spacing, and ceramic thickness can be altered to affect its quadratic electrooptic behavior. Additionally, the modulator design requires a closed-loop servo to eliminate the errors caused by the device's remanent polarization and nonlinear behavior.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Albert B. Vergona, Albert B. Vergona, } "Application Of Light Valves For Continuous-Tone Printing", Proc. SPIE 1079, Hard Copy Output, (6 July 1989); doi: 10.1117/12.952808; https://doi.org/10.1117/12.952808

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