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jiaming.xie木虫 (正式写手)
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[求助]
求助物理光学方面的达人翻译下
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The TESA 2000 optical system is a highly specialized system designed for the express purpose of measuring solar absorptance and infrared emittance. The TESA 2000 optical system has been designed to minimize losses, to facilitate and maintain optical alignment, and to utilize the features of AZ Technology's unique hemispheric collector that allows compactness for portability without sacrificing accuracy of measurements. The TESA 2000 Portable Reflectometer consists of two different optical subsystems: the infrared subsystem and the solar subsystem. Each subsystem contains a source, and mirrors for directing the energy to the collection system. The collection system and electronics are the same for both optical subsystems. The measurements are performed by illuminating the sample at a near-normal angle, with respect to the surface, using the two different optical subsystems. In order to properly measure the solar absorptance and infrared emittance of the surface, the optical system must be able to collect a full hemisphere of the reflected/scattered energy from the surface. AZ Technology has managed this requirement by designing an extremely compact hemispherical collector. This patented optical element collects a full hemisphere from the sample and directs this energy onto a detector. An internal calibration mirror alternately directs the incident beam either to the detector or to the sample. This allows a calibration of the 100% scale since the incident energy in terms of the detector output voltage is known. By comparing incident energy to the reflected energy, the weighted reflectance of the sample is measured. For each of the two measurements, this reflectance is subtracted from one in order to obtain the solar absorptance or the infrared emittance, depending on which source is illuminating the sample. |
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vivanslum
木虫 (正式写手)
- 翻译EPI: 94
- 应助: 10 (幼儿园)
- 金币: 5587.9
- 散金: 21
- 红花: 4
- 帖子: 547
- 在线: 600.7小时
- 虫号: 1801798
- 注册: 2012-05-07
- 专业: 环境工程
【答案】应助回帖
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Mally89: 金币+1, 感谢应助！~欢迎常来！~好运！~吼吼！~\(^o^)/~ 2012-05-19 19:07:58
jiaming.xie: 金币+50, 翻译EPI+1, ★有帮助, 谢谢 2012-05-21 09:33:52
Mally89: 金币+1, 感谢应助！~欢迎常来！~好运！~吼吼！~\(^o^)/~ 2012-05-19 19:07:58
jiaming.xie: 金币+50, 翻译EPI+1, ★有帮助, 谢谢 2012-05-21 09:33:52
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TESA 2000 光学系统是一个高度专业化系统，专门为测量太阳能吸收和红外发射率所设计。TESA 2000 光学系统的设计以尽量减少损失，促进和保持光学校准为目的，并利用AZ技术独特的半球收集器，在不牺牲测量精度的情况下，实现简洁便携性。 TESA 2000便携式反射计包含两个不同的光学子系统：红外子系统和太阳能子系统。每个子系统都包含一个源，和引导能量到收集系统的反射镜。两个光学子系统的收集系统和电子元件都相同。在接近正常的角度照亮样品，使用两个不同的光学子系统对样品表面进行测量。为了正确测量表面的太阳能吸收和红外发射率，光学系统必须能够从样品表面收集全部半球反射/散射的能量。AZ技术已通过设计一个非常紧凑的半球形收集器来设法达到这一要求。这一已获专利的光学元件可收集来自样品的全部半球的能量，并将能量引导到探测器。内部的校准镜可引导入射光束到探测器或样品。这可以实现100%尺度的校准，因为根据探测器输出电压可知入射能量。通过比较入射能量和反射能量，对样品的加权反射进行测量。 对两个测量的每一个，用1减去其反射率，以获得或太阳能吸收或红外线发射，这取决于哪个源用来照亮样品。 仅供参考 |
2楼2012-05-19 17:46:02
