VS70-PDA optical layout
VS70-PDA spectral coverage
VS70-PDA Quantum Efficiency

Highest SNR PDA Miniature Spectrometer

VS70-PDA OEM Photodiode Array Spectrometer is a high performance compact fiber coupled spectrometer covering wide spectral range of 200 to 1000 nm. This VS70 system for industrial applications uses a modified VS70 optical engine with Horiba’s type-IV Aberration-Corrected Flat-Field Holographic Ion-Etched concave grating optimized for UV-VIS and a linear photodiode array.

This system is fitted with a custom multi-area order-sorting filter to eliminate higher orders and features a single-optics design for superior imaging, high sensitivity, high resolution and low stray light performance for bright-light applications such as emission, absorbance and reflectance. 

For OEM Industrial Applications

Ideal for industrial bright-light applications such as emission, absorbance, and reflectance

  • Pharmaceuticals & life science
  • Semiconductor
  • Liquid chromatography
  • Environment, agriculture and energy


*Available in select countries.

You can email OEM Technical Sales at: OEM.US(at)horiba.com or contact OEM at: +1.732.494.8660 Ext. 7733

Segment: Scientific
Manufacturing Company: HORIBA Scientific
  • High spectral acquisition speed (high read out speed 3.5 ms)
  • Wide spectral coverage from UV to NIR
  • Colossal PDA full well up to 1 Ge–, more than 100 times deeper than any CCD
  • High signal-to-noise ratio combined with ultra low stray light
  • High UV sensitivity with smoothly varying spectral response
  • High throughput
  • Compact size robustness and stability


OEM Spectrometer Selection Guide

View and Download our OEM Spectrometer Selection Guide

You can email OEM Technical Sales at: OEM.US(at)horiba.com or contact OEM at: +1.732.494.8660 Ext. 7733


General Spectrometer Specifications*

Spectral Coverage

Standard: UV-VIS (200–860 nm) with 477 l/mm grating, VIS (380–750 nm) with 582 l/mm
grating, UV-NIR (200–1050 nm) with double-blazed 365 l/mm grating
On request other spectral ranges available / different mechanical integration might needed

Spectrometer Input

Fiber coupled: FC or SMA; Free space: 12-25-37-50-62-75-100-125-150-200 μm slits, other options
available upon request

Spectral Resolution

2 nm for 365 l/mm grating, 1 nm for 477 l/mm grating, 0.8 nm for 582 l/mm grating
(25 μm slit for all)
Average Spectral
30.9 nm/mm for 365 l/mm grating, 23.7 nm/mm for 477 l/mm grating,
16.3 nm/mm for 582 l/mm grating

Focal Length

70 mm

OptionsSelection of high grade sensors: CMOS, B.I. CCD, PDA
Input port: SMA, FC, free space, custom input



Stray-light Rejection
Typical (Maximum)
0.01% (0.02%) for UV-VIS configuration with 300 μm tall CCD, measured at 700 nm
(measured with broad bandpass 510 nm filter, 75 μm slit-width)
> 2.4 AU linear range (5% variation) with caffeine 273 nm absorption peak in 10 mm cuvette
and D2 lamp.

Wavelength Accuracy

≤ 0.2 nm (Average Absolute Wavelength Error)


LabVIEW™ acquisition software for initial evaluation (DLLs provided for software integration)

Detector Options and Specifications*
High sensitivity, high dynamic range linear photdiode array
Detector ModelHamamatsu S10123-1024N with higher UV sensitivity and smoothly varying spectral response
characteristics in UV region and wide photosensitive area
Sensor Format1024 x 1 pixels (512 pixels available on request)
PDA Pixel Size25 x 500 μm (taller 2500 μm version available on request)
PDA Active Area25.6 x 0.5 mm
PDA QESee the plot below
Sensor TemperatureUncooled
Maximum Spectral Rate 
Full Well Capacity100 Me- (1 Ge- optional)
Readout Noise3,900 e- (typical); 5,250 (maximum)
Dynamic Range (FW/RN) 
SNR10,000:1 (typical)
Non-linearity (measured
on each system)
< 0.4% (corrected)
Dark Current200,000 e-/pix/s (typical); 250,000 e-/pix/s (maximum)
CommunicationUSB 2
Environmental ConditionsOperating temperature 15° C to 40° C ambient
Relative humidity <70% (non-condensing)
Storage temperature -25° C to 45° C
Power RequirementsPowered by Samtec connector, 5 VDC


* HORIBA Instruments has a policy of continuous product development, and reserves the right to amend part numbers, descriptions and
specifications without prior notice.
**No LabVIEW™ license is needed to run our acquisition software.

Quantum Efficiency


Mechanical Drawings

Download Mechanical Drawings

You can email OEM Technical Sales at: OEM.US(at)horiba.com or contact OEM at: +1.732.494.8660 Ext. 7733




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