| 摘要 |
A solar cigarette lighter comprises a hollow tube having over at least part of its length from one end a free inside diameter adapted to receive a cigarette, an inwardly projecting ring between the ends of the tube to limit motion of a cigarette through the tube, and a lens of positive power affixed at the other end of the tube, distant by substantially its own focal length from the ring, whereby upon aiming the tube toward the sun with the end of the tube containing the lens toward the sun, the sun's rays falling on the lens will be brought to focus on the end of a cigarette introduced into the tube from said one end as far as the ring, and the cigarette will be lighted.
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