Flame Fiber Optic Spectrometer – Ocean Optics

Famous “S” bench re-designed!  The FLAME is the latest in the S1000 – S2000 – USB2000 – USB4000 series of fiber optic spectrometers from Ocean Optics. Over 300,000 of these workhorse spectrometers have been sold and the new Flame is bound to double that figure.

Buy Flame UV-VIS Online! By Flame VIS-NIR Spectrometer Online! BuyFlame Extended Range Spectrometer Online!

Spectrecology takes trade-ins for the new Flame fiber optic spectrometer

Flame fiber optic spectrometer with user interchangeable slits

Modular — configurable to your application and needs within the wavelength range 190-1100 nm

  • Compatible — works with Ocean Optics light sources, accessories and software
  • Easy to use — plug and play via the micro USB connection
  • User interchangeable slit — allows you to vary the resolution and throughput of the spectrometer on demand
  • Indicator LEDs — indicator of power and data transfer status at all times
  • Compact and lightweight  89.1 mm x 63.3 mm x 34.4 mm and just 265 g

The Flame Spectrometer back story…

User changeable slits — This is a huge benefit made possible by a unique manufacturing approach. The slits are laser cut in finished slit assemblies, which eliminates an alignment and bonding step that was not very precise in the older USB2000 and USB4000 designs. This makes it possible to change slits without changing the wavelength calibration. Now you can use the same unit for high optical resolution applications such as atomic emission, and low light level applications like fluorescence.

Thermal Stability — Knowledge gained from our Mars Rover efforts are paying off!  Mechanical designs that are more a-thermal reduce wavelength and amplitude shifts with temperature. The biggest improvement comes from changing how the detector is mounted. We moved from the circuit card to its own thermally designed metal base.

Unit to Unit Reproducibility — a remarkable achievement, sub-micron controlled robotic alignment and calibration! We captured 20 years of spectroscopy craftsmanship into robust and precise algortihms and real time optimization of all optical degrees of freedom.

Toshiba and Sony Detectors — Years ago we launched the Toshiba detector when we began to run out of the SONY ILX511.  Then SONY came out with the ILX511B which we adopted. But, we had fans for both detectors, and so we still offer both. The Toshiba has smaller more numerous pixels which helps when looking for the finest optical resolution, the SONY has less image lag which makes it best for pulsed stimulated emission applications or using pulsed light sources. For everything else they are pretty much comparable.

Pre-configured Flame spectrometers

Our most popular Flame spectrometer models with installed order sorting filters for clean 1st order spectra. These units come with a 25um slit. You can purchase the other sizes and change the slit yourself.

FLAME-S Preconfigured Models (Sony ILX511b detector)

Model Range (nm) Entrance Slit (μm) Optical Resolution (FWHM) Grating # Mirror Type Order Sorting (multi-bandpass detector coating) Focusing Lens
General Purpose FLAME-S-UV-VIS 200-850 25 ~1.5 nm 1 Aluminum 200-850 nm NA
FLAME-S-VIS-NIR 350-1000 25 ~1.5 nm 3 Aluminum 350-1000 nm NA
Extended Range FLAME-S-XR1 200-1025 25 ~2.0 nm 31 Aluminum 200-1100 nm  NA
Irradiance FLAME-S-RAD 200-850 50 ~3.0 nm 2 Aluminum 200-850 nm  L2

FLAME-T Preconfigured Models (Toshiba TCD1304TP detector)

Model Range Entrance Slit (μm) Optical Resolution (FWHM) Grating # Mirror Type Order Sorting (multi-bandpass detector coating) Focusing Lens
General Purpose FLAME-T-UV-VIS 200-850 25 ~1.5 nm 1 Aluminum 200-850 nm NA
FLAME-T-VIS-NIR 350-1000 25 ~1.5 nm 3 Aluminum 350-1000 nm  NA
Extended Range FLAME-T-XR1 200-1025 25 ~2.0 nm 31 Aluminum 200-1100 nm  NA
Key Feature Best For Example Applications
User Interchangeable Slits Users who wish to vary resolution and throughput during measurements, or switch from absorbance to fluorescence in minutes Absorbance of DNA & Proteins use a 25um slit, switch to a 200um slit to look at fluorescent labels
Indicator LEDs Convenient visual reference for spectrometer operation and status Online and long term measurements require verification that data is being taken
Thermal Stability Applications that require repeatable results in industrial and other environments with varying temperatures and conditions LED binning and light metrology, process monitoring, and online or long term experiment, experiments outdoors
Reduced Unit to Unit Variation OEM applications such as uncalibrated sensitivity and other measurement needs where users benefit from low variance OEM manufacturers of analytical instrumentation
Configurability Optimizing your spectrometer for application-specific requirements; adjusting range, throughput and resolution and adding features such as filters as required Laser characterization, low signal fluorescence and optimizing for specific absorbance bands
Plug & Play Operation Users that want the convenience of simple, fast operation via the microUSB connection; enables users to take the measurement to the sample Remote sensing measurements in the field, including air and water quality monitoring and solar irradiance
Ease of Integration OEMs and developers who need to integrate a spectrometer as part of a system via microUSB or RS-232 Engineering labs, developers, OEM manufacturers; works with LabVIEW and other design platforms
Specifications FLAME-S FLAME-T
Focal length 42mm 42mm
Resolution (pixels) 5um x 1000um slit: 3.0 5um x 1000um slit: 5.3
10um x 1000um slit: 3.2 10um x 1000um slit: 5.7
25um x 1000um slit: 4.2 25um x 1000um slit: 7.5
50um x 1000um slit: 6.5 50um x 1000um slit: 11.6
100um x 1000um slit: 12 100um x 1000um slit: 21
200um x 1000um slit: 24 200um x 1000um slit: 42
Grating Ranges 500 mm-1   ~850nm;                                                     600 mm-1   ~650nm;                                                         1200 mm-1  ~300nm;                                       1800 mm-1  ~160nm;                2400 mm-1   ~100nm; 500 mm-1   ~850nm;                                                     600 mm-1   ~650nm;                                                         1200 mm-1  ~300nm;                                       1800 mm-1  ~160nm;                2400 mm-1   ~100nm;
Resolution (nm) ~0.1-10.0 nm FWHM (configuration dependent)
Signal-to-noise ratio: 250:1 (full signal) 300:1 (at full signal)
Dark noise: 50 RMS counts
Dynamic range: 1300:1 for a single acquisition, 8.5 x 10^7 (system)
Sensitivity 75 photons/count;         2.9 x 10-17 joules/count 130 photons/count @ 430nm  60 photons/count @ 600nm
Integration time: 1 ms – 65 seconds  3.8 ms – 10 seconds
Stray light: <0.05% at 600 nm; <0.10% at 435 nm
Corrected linearity: >99%
A/D resolution: 16 bit
Power consumption: 250 mA @ 5 VDC
Inputs/Outputs: 8 x  user programmable GPIOs
Trigger modes: 4 modes
Strobe functions: Yes
Gated delay feature: Yes
Connectors: USB, high density 40 pin JAE DD4 connector
Detector: Sony ILX511B linear silicon CCD array Toshiba TCD1304AP linear silicon CCD array
Detector range: 190-1100 nm 190-1100 nm
Pixels: 2048 3648
Dimensions: 88.9 mm x 63.5 mm x 31.9 mm (34.4 mm with feet)
Weight: 265 g
** engineer on duty to help – call Spectrecology at 727 2301697

Flame Mechanical Drawing

Ocean Optics Flame Mechanical Drawing - Spectrecology

Flame DD4 Pinouts

Accessory 40 pin connector — facing the the front (optical fiber port) of the Flame. Pin #1 is on the right.Relevant connector parts are JAE DD4 receptacle (DD4RA40JA1).  Plug versions include DD4PA40MA1 and DD4BA40WA1

Ocean Optics Flame DD4 Accessory Connector pinouts - Spectrecology

Flame_Technical_Specifications all optical and electrical specifications, pinouts, mechanicals, performance charts, software interface

Flame Manual  operating manual for Ocean Optics Flame users

FlameDAUVVISInstructions   illuminated UV-VIS cuvette holder that attaches to the Ocean Optics Flame operating instructions

FLAMEDAVISNIRInstructions  illuminated VIS-NIR cuvette holder that attaches to the Ocean Optics Flame operating instructions

Direct Attach Illuminated Cuvette Holders for Flame Spectrometers

Flame CHEM system spectrometer and illuminated cuvette holder - SpectrecologyThe direct attach illuminate cuvette holders offer a remarkably compact system for measuring absorbance in 1 cm cuvettes.


The Ocean Optics FLAME-CHEM-VIS-NIR (350 – 1000nm) direct attach features a tungsten halogen lamp with a violet LED for better signal in the lower wavelength range. This is the new version of the classic CHEMUSB4-VIS systems.

Buy Flame-Chem-VIS-NIR Online!

Flame DA UV-VIS 600


The UV-VIS (200 – 850nm) FLAME-CHEM features a co-linear tungsten halogen bulb and an RF excited miniature deuterium lamp.

This is the smallest, fastest most versatile UV-VIS spectrophotometer available anywhere!

Buy Flame-Chem-UV-VIS online!

The UV-VIS system can also work with the extendted range Flame spectrometer, providing 200 – 1000nm coverage.

The direct attach units unbolt for easy access to the fiber optic port.

Integrated sampling system: FLAME-DA-CUV-UV-VIS FLAME-DA-CUV-VIS-NIR
Light source: Combined deuterium-tungsten halogen (200-1100 nm) Tungsten halogen with a violet LED (~390-1000 nm)
Light source features: Manual adjustment of tungsten halogen source I2c adjustment of the tungsten halogen and LED bulbs
Bulb lifetime: 800 hours (deuterium); 2,000 hours (tungsten halogen) 2,000 hours (tungsten halogen); 45,000 hours (LED)
Cuvette holder: Accepts 1 cm pathlength cuvettes Accepts 1 cm pathlength cuvettes
Cuvette holder features: Filter slot on illumination side accepts 0.5” or 12 mm filters; improved collection optics Improved collection optics
Spectral range: 200-850 nm 350-1000 nm
Spectrometer (preconfigured): FLAME-S-UV-VIS-ES FLAME-S-VIS-NIR-ES
Detector: Sony ILX511B linear silicon CCD array Sony ILX511B linear silicon CCD array
Entrance slit: 25 µm 25 µm slit
Optical resolution: ~1.5 nm (FWHM) ~1.5 nm (FWHM)
Order-sorting filter: 200-850 nm 350-1000 nm
Focus lens for enhanced sensitivity: Yes Yes
Signal-to-noise ratio: 250:1 250:1
Dynamic range: 1300:1 for a single acquisition 1300:1 for a single acquisition
Integration time: 1 ms-65 seconds 1 ms-65 seconds
Stray light: <0.10% at 435 nm <0.05% at 600 nm

Typical System Setups


FLAME fiber optic spectrometer UV VIS absorbance
Absorbance of liquid samples in 1cm cuvettes with FLAME spectrometer — Spectrecology

Our Flame UV-VIS spectrophotometer provides absorbance spectra from 200 – 850nm for standard 1cm cuvettes. The Flame is our newest and most thermally stable spectrometer yet. It boasts user interchangeable slits, fast data acquisition (spectra every 1 msec) and it couples to our 2500+ fiber optic accessories.

The system includes our new DH-mini deuterium-tungsten light source, fibers cuvette holder, software and cuvettes. As an added bonus, Spectrecology also includes 2 fine quartz cuvettes and a cuvette rack.


Flame fiber optic spectrometer LLS-365 UV LEDS
Fluorescence of liquid samples in 1 cm cuvettes using LLS LED excitation nad the FLAME spectrometer to measure emission spectra — Spectrecology

Our FLAME fluorescence system provides fluorescence emission spectra from 350-1000nm. Excitation is from a high power fiber coupled  LED. The kit comes with a 365nm LED and as an added bonus Spectrecology also includes a 470nm LED that can be switched by the user. The cuvette holder features 4 ports for fluorescence or absorbance measurements, mirror inserts to enhance excitation and emission collection efficiency and a quartz fluorescence cuvette. Spectrecology also includes a pack of 100 4 sided disposable cuvettes.

By Flame Fluorescence System Online!

SE-Flame-REFLECTANCE-VIS reflection spectrometer

Flame fiber optic spectrometer, white standard reflection probe
Diffuse or specular reflection measurement using a FLAME spectrometer and a fiber probe — Spectrecology
Our FLAME reflection system uses a classic 6 around 1 reflection probe. This was the very first fiber probe developed by Ocean Optics nearly 20 years ago, and it has been used extensively for measuring reflectance for color determination, thin film thickness measurement, reflectance of optics, backscattering in tissue and fluids and even fluorescence. The system includes a light source, reflection probe, white standard, software and holder and of course the VIS-NIR Flame spectrometer.
Buy Flame Reflectance System Online!


Flame fiber optic spectrometer irradiance cosine corrector
Measuring radiometric spectra and CIE color space of light sources with the FLAME spectro-radiometer — Spectrecology

The SE-FLAME-RAD is a VIS NIR Flame spectrometer equipped with a fiber and cosine corrector. The kit includes an HL-2000-CAL radiometric calibration lamp – standard light source. the system provides spectro-radiometric measurements of planar irradiance (uW/cm2/nm). The software presents many diffe

rent calculations of energy, CIE color and associated scales.

Buy a Flame Spectro-radiometer Online!