The LED Changer is a versatile light source designed to cover a wide range of wavelengths, including NIR (Near Infrared), Vis (Visible), and UV (Ultraviolet) spectra. It uses multiple LEDs to provide adjustable and customizable illumination, making it ideal for laboratory and scientific applications where different types of light are required for various experiments and analyses.
Description
LED Changer
The LED Changer is a light source that contains 10 high power LEDs placed on a revolving disc. Only one of the LEDs can be turned on at the time. LED selection, light intensity, duration, and other parameters are driven from a program on a PC. The device has a cage (Thorlabs or TECHSPEC from Edmund Optics compatible) type of sample holder with a manually adjustable lens that is used to focus light on a sample or on a waveguide.
The LED Changer can be used wherever a strong LED light is needed. The LED disc, which contains 10 single-structure LEDs, is exchangeable. One can order a disc with custom LEDs from the list below. The LED Changer can be oriented in several ways depending on the application and can also be mounted on an optical stand.
It forms a Photoelectrochemical (PEC) Measurement Station when coupled with a Potentiostat. The LED Changer is frequently used as a light source in Surface Photovoltage Spectroscopy (SPS) together with our Kelvin Probe. When attached to the Electrochemical Shielding Box, the LED Changer illuminates a sample that is screened from unwanted light sources and electromagnetic noise.
Specifications
⬛ Spectral range: 280 nm – 1000 nm (depends on selection of LEDs)
⬛ Lens focal length: 25 mm
⬛ Number of LEDs per disc: 10
⬛ Disc rotation: automatized
⬛ Light beam focus: manual
⬛ Can be combined with Potentiostat, Kelvin Probe, and more
⬛ Light intensity adjustment: from PC
⬛ LED positioning on optical axis: automatized
⬛ Light on/off duration: from PC
⬛ PC connectivity: USB 2.0
⬛ Power supply: 230 V, 50 Hz or 115 V, 60 Hz
⬛ Dimensions: 121 x 112 x 132 mm (l x w x h)
Other features:
⬛ Auto close in – automatic turn off after a defined time, in [s]
⬛ Use ramp – smooth light intensity increase after turning on, smooth decrease after turning off, transition time set in [s]
⬛ Modulation – intensity modulation at a frequency given in [Hz], or a period in [s], with defined amplitude ‘Amp [%]’ and ‘Bias [%]’
