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发表于 2011-4-25 14:45
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2.3 PEAK BEAM INTENSITY 峰值光束强度
Note—The same test data set shall be used for both beam distance and peak beam intensity.
注意 - 同一个测试样本,将会同时用于射程测试及峰值光束强度测试
2.3.1 Purpose 目的
To provide a procedure to determine the peak beam intensity, reported in units of candela, of the device’s beam pattern within 30 s to 2 min of operation.
为了提供一个程序,以确定该设备在刚开始点亮的30秒至两分钟时间内,以坎德拉为单位,报告峰值光束强度
2.3.2 Power Source 电源
All tests are conducted with fresh batteries or fully charged batteries/energy storage devices.
所有的测试,都应该是用新的电池,或经过充满电的电池或者是能源储存装置为电源。
12V DC devices that are only tethered shall be powered with 13.8V DC using a power supply.
使用12V直流为电源的设备,只能使用、栓上能提供13.8V的直流供电电源
Batteries used for testing and claim substantiation shall be of the same type and/or brand as those offered for sale with the product.
用于测试和声明使用的电池,应是同一类型,和/或与该品牌产品一同出售的电池
If the product is sold without batteries and a beam distance claim is made, a specific battery type and chemistry shall be recommended with the package. The batteries recommended by the manufacturer are to be used for testing.
如果产品销售不包括电池,但有标明射程,设备制造商应该在包装上,推荐一个具体类型的电池和电池种类。由制造商建议使用的电池,将被用于测试。
2.3.3 Conditions 测试环境
Tests will be conducted at lab conditions—see clause 2.1.1.
测试将会根据上列第2.1.1的测试环境来进行
Testing should be performed in a dark environment where the ambient conditions are determined to be less than 1 lux in the entire test area prior to the test.
测试环境的光亮度,应该是以全黑的环境为测试条件,而在测试前,整个环境的亮度,应该小于1 lux。
If the device offers multiple output levels, the peak beam intensity will be measured at the maximum level or as otherwise identified.
如果该设备提供多档输出亮度,峰值光束强度将会量度最高档的亮度,或者是说明那一个档位的亮度。
If the device has variable focusing or adjustable beam angle, the peak beam intensity will be measured at the focus level or beam angle that produces the maximum beam intensity or as otherwise identified.
如果该设备提供可调教焦距,或者是可调光束角度,峰值光束强度将会量度最聚光或者光束角度能提供最大的光束强度的调教,或者是加以说明的调教方式。
2.3.4 Apparatus 仪器
A timing device, a distance measuring device, and a light measuring device that measures in units of lux shall be used. Minimum aperture area shall be 100 mm².
测试将会使用一个计时装置,一个距离测量设备,及一个在照度单位为lux的光测量设备(比如照度计)。最小孔径面积为100平方毫米。
2.3.5 Procedures 测试程序
Place the light measuring device at a test distance of either 2 or 10 or 30 meters from the front of the surface of the lens of the device to be tested. The test distance chosen shall be at least 10 times the largest dimension of the device’s lens or output height or width.
从该测试设备的镜片表面起算,放置照度计在距离该设备2米,或者是10米,或30米的前面,选择的测试距离,应该是起码十倍于测试设备的镜片表面最大尺寸,或者是输出高度或宽度的最大尺寸。
Use the light measuring device to identify and record the highest indicated value.
使用照度计去鉴定,并记录下最高的标示值。
Measurements shall be taken 30 s to 2 min of turning on the device.
测量须于该测试设备打开的30秒至2分钟内进行。
2.3.6 Final calculations 最终计算方法
Surface light intensity x (distance)2 = peak beam intensity
表面的光强度,乘以距离的两次方,等于峰值光束强度
where:
在这里:
Surface light intensity is in lux (lx)
表面的光强度,是以勒克斯为单位(lux)
Peak beam intensity is in candela (cd)
峰值光束强度是以坎德拉(cd - 烛光亮度)为单位
The reported value shall be the highest calculated peak beam intensity of the values measured at test distances in clause 2.3.5.
报告使用的值,应是以第2.3.5项中,从测试距离测量得来的峰值光束强度计算值
The published figure shall be the average of the results of the three devices tested. Round to whole numbers following standard rounding rules.
公布的数字,应该是以提供测试的三个样本,测试结果的平均数,以标准四舍五入为整数的规则来公布。 |
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