prefocus

prefocus

1. 4. it has focusing device, which can make adjustment of astigmatism and prefocus.

4. 具有调焦装置，可以进行散光和聚光调节。

2. medium prefocus base

中型预聚焦灯座金属基体

3. 4、It has focusing device, which can make adjustment of astigmatism and prefocus.

好，抗冲击性能好。4、具有调焦装置，可以进行散光和聚光调节。

4. Dimensions for Projection Lamps - Four-Pin, Prefocus, Base-Down Type

放映灯规格。四脚预聚焦灯头向下型

5. prefocus lamp

聚光灯 定焦灯

6. prefocus cap

聚光灯头

7. For action, it is best to prefocus.

视乎情况，机系死的，人系生的，要懂得变通。

8. Apply on the public square, airport, wharf, station, building lighting, advertisement plaque, exhibition center etc prefocus lighting.

适用于广场、机场、码头、车站及广告牌、展览馆等聚光照明。

9. prefocus base

预聚焦基点

10. prefocus lens

预聚焦透镜

11. prefocus lamp base

预调焦灯座