A power light stick, comprising: a handle portion, for the user to grip, the front end of the handle portion is provided with an illumination means; hollow stick body portion connected to the handle portion, the upper portion of the stick body is provided with a rechargeable battery ; the stick in t.....
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The invention provides a freeform lens, which comprises a body (1) with a substantially bowl-shaped structure formed by a transparent material; the bottom of the body sinks inwards to form a light source area (2) which can accommodate an LED; the surface, surrounding the light source area (2), of th.....
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一种检测调校光电控制器的可变照明装置包括：在箱体光室中一端的光度可调的白炽灯泡。在光室中靠近灯泡的、使灯泡发出的光多次反射的光障。在光室中另一端的让该多次反射后的光线射出光学室的透明窗口。在光室中窗口附近的具有窗口相同光度的测光表。在光室外的围绕该窗口的遮光圈。与测光表连接的在箱体电器室中可由外部读数的显示器。在电器室中向灯泡供电的电池组。在电器室中可由外部调节的控制该电池组供电电流大小的变流器。在电器室中的可由外部调节测光表的调节器。本实用新型装置结构简单，造价低廉，体积小巧，可用于不同尺寸的光电控制器感光窗，使得街灯用的光电控制器在任何强度的环境光下都能检测调校。
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The invention provides a side emitting light emitting diode light source within the lens. Its role is to change the light emitting diode chip emitting direction, most of the light from the side of the light emitting diode chip along the central vertical axis of the very small angle inward gathered a.....
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The present invention provides an optical fiber having the gas laser and the laser optical fiber ring laser gyroscopes. The optical fiber comprises a gas laser excitation gas, the excitation source and the optical cavity, characterized in that the optical cavity by the hollow fiber and single mode f.....
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