The invention relates to a projection-type head lamp capable of reinforcing light in a dark space, which comprises a lamp holder, an illuminating part, a shading plate and a light guide plate.
一种可补强暗区光线的投射式头灯，包含：一灯座、一发光件、一遮光板， 以及一导光板。
2 projecting heads for table cinematographs, 1 optical sound head, 1 carbon arc projection lamp, 1 slide projector and more. All untested.
2个放映机头，用于桌式电影摄影机，1个电子光声头，1台煤油弧光灯，1个滑线电阻，1台幻灯机，1个印片机箱，1个暗房照明灯(煤油)，均未检测。
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