Ocean Optics - Inventor of the World's First Miniature Spectrometer
Ocean Optics - Inventor of the World's First Miniature Spectrometer
 

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Ocean Optics - Inventor of the World's First Miniature Spectrometer
 

LS-450 Blue LED Pulsed Light Source

The LS-450 Blue LED Pulsed Light Source is an LED that produces either pulsed or continuous output at 470 nm -- the blue region -- for fluorescence measurements. The source is designed for use with Ocean Optics spectrometers configured for fluorescence, with Fiber Optic Oxygen Sensors, and with sampling optics such as the CUV-UV-ALL 4-way Cuvette Holder. 

Features

  • Excitation Source. Produces either pulsed or continuous output at 470 nm for high-sensitivity fluorescence applications

  • Software Operation. Lamps can be turned on/off and used in pulsed or continuous mode through manual or software operation

  • Synchronization with Detector Scan Rate. Configure lamp pulse rates via jumper blocks on the lamp or on the spectrometer

The LS-450 Blue LED is $577. 

The LS-450 can be configured to operate in pulsed or continuous mode through manual or software operation. Also available are additional wavelength-specific LEDs (see below) for use with the LS-450 housing. These LEDs are $100 each.

LS-450 Stand-alone Version

The LS-450 connects to the spectrometer via an interface cable; an SMA 905 Connector allows coupling to fiber optics. You can configure the light source to operate through a jumper block on the source or on the circuit board of an S2000 Spectrometer. 

Also available is the LS-475 Pulsed Blue LED, which is distinguished by its wavelength (interestingly enough, 475 nm) and its fan-cooled assembly

Rack-mount Versions.

The R-LS-450 Blue LED is the rack-mount version of the LS-450. For multiple-LED users with limited space in a desktop or rack box, the R-LS-450-2 (2 LEDs) rack-mount version is another option. You can configure operation of the R-LS-450 and R-LS-450-2 through three jumper blocks on the circuit board of the R-LS-450.

In addition, the LS-450 can be installed into an SF2000 Spectrophotometer. The LS-450 is mounted onto a card, and then stacked with the spectrometer in the same housing.

LS-450 for Use with USB2000 Spectrometer

The USB-LS-450 module connects to the USB2000 Spectrometer via the spectrometer’s 10-pin connector. The spectrometer provides power to the LED and also enables synchronization functions and I2C communications. By adding a sampling optic and interfacing to a notebook PC, the USB2000-with-USB-LS-450 setup provides a convenient, field-portable system.

Benefit for Fiber Optic Oxygen Sensor Users

The USB-LS-450 features a built-in, 24-bit analog-to-digital converter that is configured for a 100 ohm platinum RTD. The USB-LS-450’s on-board memory can be programmed to store temperature and oxygen calibration coefficients.

LS-450 Specifications

  LS-450, R-LS-450, R-LS-450-2 USB-LS-450 Drive Module
Physical dimensions: 90 mm x 50 mm x 32 mm 
(LS-450 only) 		89 mm x 102 mm x 38 mm
Power consumption: 25 mA @ 12 VDC 60 mA @ 5 VDC
Power output (minimum): 50 µW into 600 µm fiber  60 µW into 600 µm fiber 
Stability: <1.0% after 2-minute warm-up <1.0% after 2-minute warm-up
LED drive current: NA 20 mA +/-150 mA

LS-450 Ordering Information

Item Description Price
LS-450 Blue LED produces output at 470 nm; includes interface cable to S2000; can be mounted with an S2000 or installed into rack or desktop boxes $577
R-LS-450 Rack-mounted version of Blue LED produces output at 470 nm; includes interface cable to S2000 $808
R-LS-450-2 Rack-mounted version of dual Blue LEDs produces output at 470 nm; includes interface cable to S2000 $635
USB-LS-450 Multi-purpose LED module for USB2000-FL Spectrometers has built-in 24-bit A/D converter to accommodate a 100 ohm Resistance Temperature Device; also has on-board memory to store temperature and oxygen calibration coefficients when used with Oxygen Sensors $635
USB-LS-450-4/20 Add-on to USB-LS-450 LED drive module provides 4-20 mA output. Call for Price
USB-LS-450-TP Platinum 100 ohm Resistance Temperature Device, for use with USB-LS-450 LED module. $115

Additional LED Options

If the 470-nm wavelength bulb that comes installed into the LS-450 is not the right excitation source for your application, you can easily remove the bulb and insert one of the LEDs listed below. Each bulb comes in a 12.7-mm reflector barrel for easy installation and better alignment.

Item Description Color Power* Price  
LED-380 380 nm wavelength UV LED used in place of the 470 nm bulb in the LS-450 UV 45 µW $116
LED-395 395 nm wavelength VIS LED used in place of the 470 nm bulb in the LS-450 Violet 25 µW $116
LED-518 518 nm wavelength VIS LED used in place of the 470 nm bulb in the LS-450 Green 35 µW $116
LED-590 590 nm wavelength VIS LED used in place of the 470 nm bulb in the LS-450 Yellow 40 µW $116
LED-640 640 nm wavelength VIS LED used in place of the 470 nm bulb in the LS-450 Red 50 µW $116
LED-WHITE 450-630 nm wavelength VIS LED used in place of the 470 nm bulb in the LS-450 White 50 µW $116
LED-KIT Set of 6 LEDs: LED-380, LED-395, LED-518, LED-590, LED-640 and LED-WHITE Mixed Mixed $577

(*Power into a 600 µm Patch Cord Optical Fiber Assembly)  

Absolute Spectral Output for Ocean Optics  LED Bulbs


LED Bulbs: 380 nm, 470 nm, 518 nm and 640 nm

 

 


LED Bulbs: 395 nm, White and 590 nm

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LS-450 Specifications

 

LS-450 Ordering 
Information

 

Additional LED Options