| 摘要 |
A camera apparatus ( 10 ) has a zoom lens ( 12 ) having a zoom focus setting that is adjustable over a range of focus values and control circuitry for generating a variable voltage potential according to the zoom focus setting. A flash illumination apparatus ( 20 ) has a light source ( 32 ) and a variable focus liquid crystal lens ( 24 ), the variable focus liquid crystal lens ( 24 ) having a first and a second solid optical element ( 40, 50 ), chamber ( 44 ), the two electrodes ( 42, 48 ) and liquid crystal material ( 46 ). A variable voltage is applied to the liquid crystal material ( 46 ) for the lens power according to the zoom focus setting.
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