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Design of the thermally tunable polymer microlens.
Experimental setup for testing the microlens.
Side view of a microlens with a base diameter of at .
Changes in focal length for three microlenses as a function of temperature. The focal length at is for the microlens, for the microlens, and for the microlens, respectively.
The measurement of microlens in base diameter. (a) Measured temperature-dependent thickness of the microlens. (b) Focal length indirectly determined from the measured thickness of the microlens in base diameter, as compared with direct measurement results.
Determination of the magnification by the microlens. (a) Experimental setup. (b) The magnification factor as a function of temperature. [(c) and (d)] Images of a gold thin-film pattern at 26 and , respectively.
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