I-Sphere is simply the best way to measure the optical absorption of any liquid, in the ocean or in the lab. I-Sphere redefines the state of the art, with more than 10 times greater spectral resolution than the nearest "high-resolution" alternative—and almost 50% more spectral range—all without moving parts. Its innovative integrating sphere design provides high sensitivity with no scattering error, yet is impervious to contamination and easy to maintain.

    高光谱吸收、衰减测量仪是测量任何流体的光学衰减的最好方法，用于海洋或实验室里。它以其比最近高像素产品高出十倍多的频谱像素，多于近50%的频谱范围-没有可移动部件这一特性，更新了当前的发展状况。该产品的创新结合了具有高灵敏度(无分散错误)这一特性，而且防污染，易于保养。

Measurements 测量：

High absorption sensitivity 高吸收灵敏度

Wide dynamic range 宽广影像动态范围

No scattering correction required 无须散射矫正

Wide spectral range: 360 to 850 nm 宽广的频谱：360-850海哩

High spectral resolution: 1500 wavelengths 高频谱像素：1500 波长

Rigorous calibration 高校准性

Depth sensor (various ranges available, 330m standard) 深度传感器


Sphere Features 特性:

Rugged solid plastic 粗制固体塑胶

Impervious to stains, contamination 防潮，防污染

Streamlined flow-through path; easy interface with a pump (recommended pump: Seabird SBE-5T or SBE-5M)
流线型的流通途径；易于连接抽水机(推荐抽水机：海鸟SBE-5T或者SBE-5M)

Simple cleaning: open easily without tools 清洁简便：无须工具即可打开


Data Handling数据处理

Real-time output: RS232, 9600 to 115200 baud
实时输出量：RS232, 9600 to 115200波特

Onboard data storage: 128 MB to 2 GB flash memory
板载数据存贮：128MB-2GB 闪存

Advanced Features 先进性:

Autonomous sampling--programmable on any schedule
自动取样-程序化进度

LED light source with software-selectable wavelength bands
配备可选择软件波长波段的LED（发光二极管）光源


Options选择

Deployment frame 展开框架

Optional optics for finer spectral resolution, other wavelength ranges, etc. Contact us for details.
如需更好的频谱像素，其他的波长范围的光学仪器的详情，请联系我们

Battery pack for cable-free operation 电池包（无须插电使用）

Mechanical		Diameter: 14 cm (5.5") 直径：14CM(5.5”) Length: 51 cm (20") 长度：51CM（20”） Weight: 9.5 kg in air, 2 kg in water AA重量：9.5kg(空气中)，2kg(水里) Pressure housing: anodized aluminum 压力遮蔽物：阳极电镀铝
Optical		Wavelength range: 360 to 850 nm (other ranges possible) 波长范围：360-850海哩 Wavelength resolution: 0.3 nm typical 波长 像素：0.3海哩 标准 Spectral resolution (FWHM): 3 nm (others possible) 光谱像素（FWHM）：3海哩（其他可能） Calibrated absorption coefficient measurement range: 0 to 10 m-1 (higher available on request) 校准吸收系数测量范围：0-10 m-1 需要更高的适用性
Electrical		Power/Data Connector: Subconn/Impulse MCBH8M; Mate MCIL8F 功率/数据连接器： 水下连接器/推动力 MCBHBM;MATE MCILBF Data Interface: RS232, selectable 9,600 to 115,200 baud (RS485 available) 数据接口：RS232,可选择的9，600-115，200 波段（RS485可用） Input voltage: 10 to 24V 输入电压 Power consumption: 25W max 功率消耗：25W 最大
Environmental		Operating temperature: 0 to 35 C 操作温度：0-35摄氏度 Maximum depth: 600 m 最大深度：600米
Data Logging		128M flash memory standard; up to 2 GB available. 128M闪存存贮标准 Variable, programmable sampling rates. 变化，程序化，分辨率 Sampling can be scheduled by internal real-time clock 取样可由内部实时闹钟定时。

A New Hyperspectral Spherical-Cavity Absorption Meter
一种高光谱球面-空穴 衰减测量仪

How do you measure spectral light absorption by ocean water-or any other liquid? How do you accurately determine the spectral absorption coefficient, in inverse meters (m-1), over the full spectrum? The only widely accepted method is to use an integrating sphere. An integrating sphere with high diffuse reflectivity renders insignificant the scattering by suspended solids in the liquid. It also increases the absorption path length, thereby increasing the instrument sensitivity and accuracy. There simply is no better approach for measuring the absorption coefficient of any liquid. Yet until now this approach has not been available in a commercial instrument. The engineering challenge has been in how to implement this approach in a practical instrument. The scientific challenge has been in how to calibrate such an instrument.
HOBI Labs has developed an integrating sphere absorption meter for both in-water (depths to 600 m) and laboratory applications. This revolutionary instrument is called the I-Sphere. The laboratory version, which has additional spectral capabilities, is called the HyperSphere. Moreover, we have developed an accurate and scientifically verifiable calibration methodology.

    如何用海水或者其他液体来测量光谱光觉吸收？如何在相反的测量器中并在全频谱的情况下准确地确定光谱吸收系数？唯一被广泛接受的方法是使用累计球。带有高漫反射系数的累计球通过液体里的悬浮体来提供可忽略的分散。 它还增加吸收路径的长度，从而增强仪器的灵敏度和准确度。现在还没有更好的方法来测量任一液体的吸收系数。然而目前这种方法在商业仪器中还没有得到应用。这个工程挑战一直存在于：如何在现实的仪器中实施这种方法，而科学的挑战是如何校准这种仪器。
HOBI 实验室已开发出一种累计球吸收测量仪，用于水中（最深达600米）和实验室。这种革命性的仪器被称为 Sphere-I. 实验室的版本被称为超球面，具有另外的光谱功能。此外，我们已开发出了一种准确和科学的口径测定方法论。

BACKGROUND 背景

Comparative Absorption Measurement Methods

比较吸收测量方法

Comparative Absorption Measurement Methods

比较吸收测量方法

Laboratory Spectrophotometers实验室分光光度计

Laboratory spectrophotometers typically use a very small measurement volume, or dried samples deposited on filter paper. In some cases a solid or encapsulated liquid sample is placed in an integrating sphere acting as an uncalibrated light collector. To achieve adequate sensitivity the samples must be concentrated after being collected in the field. The necessary procedures are cumbersome, time-consuming, subject to contamination and chemical degradation, and obviously inappropriate to in-situ use. Finally, the results are typically expressed in terms of absorbance or absorptance, quantities that are not applicable to geometries other than the measurement apparatus.

    实验室分光光度计主要用于较小的测量数据或者是沉淀在滤纸上干样。在很多情况下一种固体或已压缩的固体样本被置于一个累计球里，充当未校准的光采集器。为了达到合适的灵敏度，样本在现场被收集后必须集中起来。这些必要的程序不仅麻烦，耗时，主要是污染和化学降解;明显的是比较适合原处使用。
最后，结果主要是根据吸光率或者是吸光率数量来表示，除了测量仪器外不适合几何学。

Reflecting TubeF反射管

Figure 1: Effective Path Length 有效路径长度

Figure 2: Immunity to scattering.分散免疫性

This variation on an in-situ transmissometer attempts to minimize scattering errors by enclosing the sample in a highly reflecting tube, and using a wide-angle receiver that collects both direct and scattered light. However a significant portion of the scattered light is still lost, and the amount lost must be estimated and corrected for. Also, the absorption over the typical 25 cm path is still small enough in clear water that some users find it necessary to bring a source of highly purified water into the field for frequent comparison measurements.1

Fry, Kattawar and Pope first demonstrated the viability of using a non-spherical integrating cavity for absorption measurements in the laboratory.2 Pope and Fry refined this approach to measure the absorption of pure water.3,4 However their apparatus was developed specially for those measurements and is not suitable for use outside the laboratory. Kirk has extensively modeled the performance of integrating cavities and concluded that optimum performance is obtained with an isotropic light source in the center of a sphere.5,6 However that approach entails major engineering challenges, and our work indicates it is not necessary for practical purposes.

    Fry, KATTAWAR和POPE在实验室里首次论证了非球形集成空穴进行吸收测量的可变性。Pope 和Fry 提炼了这个方法来测量纯净水的吸收。然而，他们的仪器是为那些测量特别开发的，所以不适合在实验室以外使用。KIRK 已广泛地塑造了集成空穴的能力并且得出结论：适宜的能力是伴随着球中心的等方性光源得到的。然而这种方法承载着主要的工程挑战，并且我们的工作表明这对于实际目的是没有必要的。