| 摘要 |
FIELD: optoelectronic equipment. SUBSTANCE: device has lens, optoelectronic transducer, eye- piece, piezoelectric elements, pressing lever rotation axle, which is mounted rigidly, and limiting stop. Upon mechanical tension or extension of piezoelectric elements, output electricity charges sides of piezoelectric element and optoelectronic transducer up to value, which corresponds to level of tension force, which is controlled by limiting stop. While force is applied to lever, eye-piece displays image which is produced by lens and amplified by optoelectronic transducer. In course of its service life, device provides electric power for its use. EFFECT: elimination of spare power batteries, facilitated use. 1 dwg
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