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UV-Vis Spectrophotometer / Double Beam UV-VIS-NIR Spectrophotometer model "UH-4150"

UV-Vis Spectrophotometer / Double Beam UV-VIS

A floor-standing UV-VIS-NIR Spectrophotometer for vibration free and remarkable optical stability. This latest introduction from Hitachi inherits the reliability and ruggedness of earlier models that have already proven their worth.

Features :

Small signal level differences at detector switching for highly accurate measurements even when the wavelength of detector is being switched : Multiple detectors are installed in the integrating sphere to perform measurement over a wide range of wavelengths, from ultraviolet to visible to near infrared regions. The changes in photometric values at detector switching (from signal level differences) are minimized due to a design utilizing Hitachi's expertise in integrating sphere construction, signal processing technologies, etc.

Low stray light and low polarization characteristics are attained with Hitachi's high-performance prism-grating double monochromator system : The UH4150 adopts a prism-grating (P-G) double monochromator optical system. Large changes in light intensity of the S and P polarization are less likely for the prism-grating (P-G) system than for the generally used grating-grating (G-G) system. The UH4150 offers low noise measurements, even for low transmittance and reflectance samples.

Collimated light beam allows accurate measurement of reflected light and scattered light : The incident angle is important for the measurement of specular reflectance of solid samples. For focused light beam, the incident angle varies depending on the lens's focal length, etc. Consequently, the values of simulation of design of optical thin films, such as dielectric multilayer film and prism, would differ from actual measured values. In the case of a collimated light beam, however, the incident angle is always the same with respect to the sample, leading to a highly accurate measurement of specular reflectance. Moreover, the collimated light beam is useful for the evaluation ofdiffusivity (haze) and the measurement of transmittance of lenses.

A wide variety of detectors affords the selection of detectors suitable for measurement objectives : Eight types of integrating spheres of different materials, sizes, and shapes are available. Various kinds of sample holders are available for special samples.

Higher throughput than earlier Model : UH4150 can measure at 1 nm intervals while using a scan speed of 1,200 nm/min, reducing the measurement time significantly. The UH4150 measures from 240 to 2,600 nm in approximately two minutes. It is effective for samples requiring measurement in UV-VIS-NIR wavelength range, such as Solar Reflective Materials.

Specifications :

Integrating sphere detection system
Direct light detection system
Detector Photomultiplier (UV-VIS) and
Cooled PbS detector (NIR)
Standard Integrating Sphere (inner coating: BaSO4)
60 mm Standard Integrating Sphere (4-port type) : Incident angle on reflective sample: Sample side: 8°, reference side: 0°
60 mm Standard Integrating Sphere (4-port type) : Incident angle on reflective sample: Sample side and reference side;10°
60 mm Standard Full Integrating Sphere (2-port type)
High-sensitivity integrating sphere (inner coating: Spectralon®) Direct light detector
60 mm High-sensitivity Integrating Sphere (4-port type) :Incident angle on reflective sample: Sample side: 8°, reference side: 0°
60 mm High-sensitivity Full Integrating Sphere (2-port type)
Direct light detector
Setting wavelength range 175 - 3,300 nm
Monochromator Prism-Grating, Double monochromator, Pre-monochromator: Littrow monochromator using a prism, Main monochromator: Czerny-Turner monochromator using Diffraction grating (2 switchable diffraction gratings)

Application : UH-4150 has all relevant detectors to measure transmittamce, absorbance and reflectance of liquid and solid samples (any shape) in UV, Visible and NIR range. It is very much suitable for characterization of optical components such as lenses, mirrors, prisms, etc. Other kind of solid samples can be analysed with ease thanks to availability of various kinds of sample holders. Following are few examples of its applications -

• Analysis of Phenol, total Phosphate, Silica, Nitrite Ion, etc. in water sample
• Analysis of Free Formaldehyde in Cloth Products
• Analysis of Ethanol in Soy Sauce
• Tannin analysis of tea
• Analysis of L-Glutamin Acid in Sweet Sake
• Measurement of quantity of IR pigment in plastic bottles
• Turbidity analysis of water sample
• Measurement of reflectance of substarte glass with anti-reflection coating
• Measurement of Optical Characteristic of Plastic
• Determination of the Average Aspect ratio of Gold Nanorods (GNRs)
• Measurement of transmission, absorption and reflection behavior of solar cells
• Determination of reflectance of solar radiation by heat shield paint film
• Diffuse Reflectance Spectrum of Functional Organic Dye for Blu-ray Disc
• Transmittance of light diffuser sheet used for liquid crystal display device
• Decomposition of Hydrochloric vapour in NIR region
• Measurement of Gallium-Arsenide wafer