NIR Series Spectrometer_OC

Introduction

NIR Series is a thermoelectrically cooled (TE-cooled) near-infrared fiber optic spectrometer, available in two models: NIRPro (high-resolution) and NIRMini (high-sensitivity).

Featuring a compact design, the spectrometers support configurable spectral ranges with resolution up to 0.3 nm and low stray light (~0.5%). The wavelength range is adjustable within 900–2500 nm, and the cooling temperature can reach as low as –25 °C. The spectrometer delivers excellent spectral response stability and repeatability, making it suitable for laser measurements and near-infrared applications.

Features

NIRPro features high optical resolution, achieved through a specialized optical design and manufacturing process, making it ideal for applications requiring fine spectral analysis.

NIRMini offers high sensitivity, enabling effective detection of weak signals, and performs especially well in Raman signal detection, making it suitable for precise spectral measurements.

Both spectrometers share the following features:

Low noise: Optimized circuit design reduces readout noise and supports longer integration times.
High-speed acquisition: Designed with high-speed circuitry, achieving up to 3200 frames per second, suitable for fast data collection applications.
High stability: Equipped with a cooling design that ensures excellent long-term operational stability and consistent data acquisition, ideal for continuous measurement tasks.
Compatible with Oceanhood’s dense multi-core bundled optical fibers, with fiber connection strength consistency ≤ 7%.
Multiple communication interfaces: Includes USB, serial ports, and a 24-pin I/O interface, along with proprietary DAC and ADC modules to enable, control, and monitor the intensity and power of paired light sources.

Specifications

Product	NIR series
	NIRPro	NIRMini
Dimensions	189×115×54.5mm	128×106×54mm
Weight	≈1.25KG	≈0.85KG
Optical parameters
Stray light	~5%
Consistency of optical fiber insertion and removal	≤7%
Function parameters
AD sampling	16bit
Data interface	USB2.0, RS232
Extended function interface	24PIN
Acquisition mode	Single, continuous, software trigger, synchronous external trigger, asynchronous reset external trigger
Detector integration time	100 µs-30 s (λ-1700nm)		100 µs-50 ms (λ-2500nm) 100 µs-50 ms (λ-2200nm)
CCD read noise1	≤8
Spectral dynamic range2	15000:1
CCD dynamic range3	≥15000:1 (~1700nm full signal)			≥10000:1 (~2200nm full signal) ≥7500:1 (~2500nm full signal)
Signal-to-noise ratio4	2000:1
Signal to noise ratio (full signal)5	≥13000:1
Response linearity6	≥98%
Others
Operating temperature	0℃~40℃
Working humidity	20%-85%
CCD readout noise: minimum integration time, root mean square of CCD readout noise. Spectral dynamic range: CCD dynamic range is the standard deviation of the minimum integration time, (saturation value – dark noise baseline) / CCD readout noise, the evaluation method refers to the Oceanhood’s standard. CCD dynamic range: the dynamic range of the CCD detector at full signal. Signal-to-noise ratio: in accordance with the evaluation method of Oceandhood’s standard of the actual value of the observations. Signal-to-noise ratio (full signal): the theoretical value of the reference CCD manufacturers and peer evaluation methods. Response linearity: before calibration.