Qubit Systems Inc. » Light Sources

A113 LED Light

MK — Sun, 25 Jul 2010 23:42:33 +0000

The A113 LED light is designed for use with our G112 Flow-Through Leaf Chamber to study photosynthesis, respiration and photorespiration. The LED light consists of nine red LEDs mounted in a support that fits on the upper side of the leaf chamber. It uses a DC power supply and can be powered by the A247 Battery Pack in the field.

Features:

cold white LEDs
Photon flux variable up to 1200 umol quanta/m²/s PAR (at leaf surface)
No separate light sensor required
Minimal heat load on the leaf
Calibrated for read-out in units of umol quanta/m²/s (if used with C901 Logger Pro software)

The LED light source is included in the Q-Box CO650 Plant CO2 Analysis Package.

A111 Halogen Light Source

paul — Sun, 25 Jul 2010 23:27:21 +0000

The A111 Halogen Light Source is used in investigations of photosynthetic oxygen and carbon dioxide exchange. It radiates broad-spectrum white light (50W) . It requires AC power and cannot be used in the field. The Halogen Light source produces a significant amount of heat load. When using it as a light source above a leaf chamber, ensure that a cooling water bath sits on top of the leaf chamber to absorb the heat.

Features:

Variable output when used with a separate (A112) Power Regulator
Max output of 1400 umol quanta/m²/s (11 cm above the leaf chamber)
Bracket supplied for mounting on A101 Laboratory Stand

The red, blue and green filters included in the A211 Leaf Chamber Accessories Kit, each transmit the same quantum flux when used with the A111 Halogen Light Source. The A111 Halogen Light Source comes standard with the PH1LP Photosynthesis Package and the CO500 Basic Carbon Dioxide Package. It comes as an accessory to the OX1LP Dissolved Oxygen Packages.

Z765 Light Controller

admin — Fri, 16 Apr 2010 17:00:57 +0000

The Z765 Light Controller works together with the Z760 LED Light Sources and controls their output, timing and intensity without the use of a PC.

User-friendly light control via a touch-screen.
Supports up to 4 lights or 4 colors.
Each light can be configured and calibrated independently.
Precise control over the light mode, intensity and timing (usec to hours).
Light modulation according to a predefined function (continuous, pulse, sine, triangle)
Supports generation of very short (100 us) pulses.
No PC needed.

Alternatively to the Z765 light controller achieve precise control over the light mode, intensity and timing with light studio software and a PC.

light studio software window

Z760 LED Light Source

admin — Mon, 12 Apr 2010 15:59:11 +0000

Z760 LED Light Sources are arrays of high-performance light emitting diodes (LEDs) that can operate in multiple regimes: flash, continuous light, harmonically modulated light, or they can work with a user-defined modulation. Different versions of the device vary spectrally from UVA to IR. The device can be used as a stand-alone unit or it can be integrated into other instruments, such as the Z200 Open – FluorCam, Z230 Arch FluorCam, Z150 Photobioreactor. Base LED Clusters can be used to outfit growth rooms.

Instrument Highlights:

High light output – up to 3,000 µmol(photon)/m2/s at the distance of 20 cm (depends on the LED type).
Measuring flash duration 10-40 µs
Uniform light distribution over the desired area.
Both panel and control unit cooling (automatic control).
Hardware or software control of the light regime (flashes, continuous light, used-defined modulation), timing, and intensity.
Different color versions varying spectrally from UVA to Infra-Red
standard colors available: white cold, white warm, blue royal, red-orange, red, blue, green
Bi-color, tri-color versions available.
Long longevity of LEDs (6-7 yrs)

Stand Alone Standard Panel Size……Number of Mounted LEDs:

13 x 13 cm …. 72 LEDs (one color)
13 x 13 cm ….64 LEDs (bi-color)
20 x 20 cm …. 180 LEDs (one color)
20 x 20 cm ….90 LEDs (bi-color)
20 x 20 cm …. 168 LEDs (three colors)
30 x 20 cm …. 104 LEDs (one color)
30 x 20 cm …..104 LEDs (bi-color)
30 x 20 cm …. 105 LEDs (three colors)

Custom sizes also available for growth rooms as multiples of a Base LED Cluster (80cm X 27cm) contact Qubit Systems for information

Base LED cluster

Full control of light mode, intensity, timing over both very long and short (µsec) time intervals can be provided with Z765 Light Controller. No PC needed

Light Studio Software:

User-defined protocol writing.
Precise control over the light mode, intensity and timing (seconds to hours).
Supports up to 4 lights or 4 colors.
Each light (color) can be configured and programmed independently.
Light modulation according to a predefined function (continuous, pulse, sine, triangle).
Unlimited number of light/dark phases.

References:

Solhaug K.A. et al. (2010): Planta 231: 1003-1011