- Ultra-portable field ready unit with built-in leaf probe is perfect for fast and easy leaf analysis
- Wide range spectrum (400-1000nm) covering PAR and NIR
- Ultra-high resolution (~1.5 nm FWHM)
- Real time display of measured spectrum
- Lightweight (290g) and truly portable
- Measures transmission and reflectivity
|
The CI-710 Miniature Leaf Spectrometer is designed to measure the transmission,
absorption, and reflection of light by biological substances, such
as leaves, within a wide range of wavelengths that cover visible and Near
Infra-Red (NIR) light. Absorption spectrum or reflectivity measurements
are the most common applications of spectrometers. The spectrum can be
used for the quantification of chemical concentrations, color analysis, the
study of photochemical reactions such as photosynthesis, and the quantification
of physical or optical properties such as film thickness, index of refraction, and extinction coefficient. A
biological system may absorb light efficiently at a certain range of wavelengths and transmit/reflect other wavelengths
of light. For example, most photosynthetically active green leaves strongly absorb blue/blue-green light
and reflect red and yellow light. The presence of different pigments, organic compounds, or inorganic chemicals in
biological substances may exhibit distinct characteristics in the wavelength spectrum. These unique spectral characteristics
can provide useful information for many physiological studies of biological systems, including:
- Studies directly related to the pigments in leaves – photosynthesis, genotyping, environmental stress,
disease detection/prevention
- Chemical detection/monitoring – N, sugar, water
- Leaf surface characterization by reflectivity measurement
|
The CI-710 has a compact optical bench
coupled to a Linear CCD array detector. It
accepts light energy transmitted through
strands of optical fiber and disperses the
light via a fixed grating across the CCD array,
which is responsive from 400-1000nm.
The CI-710 can be connected to an object
such as a leaf which can be scanned to obtain
graphic outputs or digital data readings
of the transmission, reflection and absorption
spectra. |
| Physical Specifications |
| Dimensions |
89.1 mm x 63.3 mm x 34.4 mm |
| Weight |
190 grams |
| Spectroscopic |
| Wavelength range |
400-1000nm |
| Optical resolution |
~1.5 nm FWHM |
| Integration time |
3.8 ms - 10 seconds |
| Stray light |
<0.05% at 600 nm; 0.10% at 435
nm |
| Optical Properties |
Light intensity, absorbance,
Reflectivity, Irradiance |
| Optical Sample Size |
7.6 mm |
| Electronic |
| Power consumption |
250 mA @ 5 VDC |
| Data transfer speed |
Full spectrum to memory every 4 ms with USB 2.0 port |
| Inputs/Outputs |
Yes, 8 onboard digital user-programmable
GPIOs |
| Analog channels |
No |
| Auto nulling |
Yes |
| Breakout box compatible |
No |
| Trigger modes |
4 modes |
| Strobe functions |
Yes |
| Connector |
22-pin connector |
| Power Supply |
USB powered via laptop or PC |
| Computer |
| Operating systems |
Windows 98/Me/2000/XP,
Mac OS X and Linux with USB
port |
| Computer interfaces |
USB 2.0 @ 480 Mbps (USB1.1
compatible) |
| Detector Specifications |
| Detector |
Toshiba TCD134AP Linear CCD
array |
| Detector Range |
400-1000nm |
| Pixels |
3648 pixels |
| Pixel Size |
8 μm x 200 μm |
| Pixel well depth |
100,000 electrons |
| Signal-to-noise ratio |
300:1 (at full signal)
|
| A/D resolution |
16 bit |
| Dark noise |
50 RMS counts |
| Corrected linearity |
>99.8% |
| Sensitivity |
130 photons/count at 400 nm;
60 photons/count at 600 nm |
| Dynamic range |
2 x 108 (system), 1300:1 for a
single acquisition |
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