| 摘要 |
A beam modulator ( 14 ) for modulating a beam ( 20 ) includes a modulator element ( 26 ) and a housing assembly ( 24 ). The modulator element ( 26 ) is positioned in the path of the beam ( 20 ). The housing assembly ( 24 ) retains the modulator element ( 26 ). The housing assembly ( 24 ) can include a housing ( 234 ), a first retainer assembly ( 342 ), and a second retainer assembly ( 344 ). The first retainer assembly ( 342 ) flexibly secures the modulator element ( 26 ) to the housing ( 24 ) and the second retainer assembly ( 344 ) fixedly secures the modulator element ( 26 ) to the housing ( 234 ) with the modulator element ( 26 ) positioned between the retainer assemblies ( 342 ) ( 344 ). With this design, the retainer assemblies ( 342 ) ( 344 ) can cooperate to retain the modulator element ( 26 ) in a fashion that applies a substantially uniform and small pressure across the modulator element ( 26 ).
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