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Hitachi

UH 4150 UV-VIS-NIR

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What it is

The Hitachi UH 4150 is a UV-VIS-NIR spectrometer, an instrument that measures the absorption, transmission, or reflection of light over the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum.[1]

How it works

General reference — not yet source-verified

A UV-VIS-NIR spectrometer operates by directing a light source through a monochromator that selects a narrow band of wavelengths, which then passes through or reflects off a sample. A detector measures the intensity of the transmitted or reflected light, and the instrument compares it to a reference beam to compute absorbance or transmittance spectra.

Where it fits in the process flow

General reference — not yet source-verified

In semiconductor and precision optics manufacturing, UV-VIS-NIR spectrometers are used for in-line or off-line characterization of thin films, antireflection coatings, and optical substrates. The instrument sits in the metrology or quality-control stage, after deposition or coating processes, to verify optical performance against specifications.

What do the numbers mean?

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Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

What type of measurement does the Hitachi UH 4150 perform?

The Hitachi UH 4150 performs ultraviolet-visible-near-infrared (UV-VIS-NIR) spectrometry.[1]

Who manufactures the UH 4150?

The UH 4150 is manufactured by Hitachi.[1][2]

What equipment category is the Hitachi UH 4150 assigned to?

The UH 4150 is categorized under Precision Optics.[2]

Not publicly documented

The following facts about the UH 4150 UV-VIS-NIR are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No specifications for the UH 4150 UV-VIS-NIR are on record.

    Answerable by: an OEM datasheet, a cleanroom equipment inventory, or an engineer who operated or installed it

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the UH 4150 UV-VIS-NIR are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • No publicly documented variants, configuration options, or revision breakpoints of the UH 4150 UV-VIS-NIR are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • The control-system platform and OS era of the UH 4150 UV-VIS-NIR are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the UH 4150 UV-VIS-NIR are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

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Sources & citations

Sources (2)Every fact above is drawn from these public sources
  1. [1]Equipment inventory listing
  2. [2]UH 4150 UV-VIS-NIR — Hitachi | Specs, Sourcing & Service | Waferpedia — waferpedia.comwaferpedia.com
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Last updated Sep 26, 2026.

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