|
Product Name: Fiber Optic Variable Attenuator
Product Description
The FVA-UV Fiber Optic Variable Attenuator is available for just $499.
The FVA-ADP-UV and FVA-ADP-VIS, which are adapters for connecting the attenuator
directly to any light source having a collimating lens at its aperture, are
available for $99 each.
Why the need for signal attenuation?
For high-intensity light level applications such as laser characterization, more
light will reach the spectrometer than likely can be digitized successfully by
the spectrometer's high-sensitivity linear CCD-array detector. Also, some
absorbance experiments may require signal attenuation; too much light can
saturate the reference measurement.
In some instances, detector saturation can be avoided by using different
gratings, changing the optical bench entrance aperture (by installing slits or
using small-diameter optical fibers) or adding neutral-density filters to the
optical path. Another option is to adjust (through software) the spectrometer
integration time to limit the interval during which the detector collects light
-- akin to changing the shutter speed on a camera to a fast exposure time. The
FVA-UV fits in where these signal-reduction techniques are either unworkable or
undesirable.
The FVA-UV is an anodized aluminum block with 3/8-24 threaded ports to
accommodate a 74-UV Collimating Lens. A mechanical adjustment wheel is used to
control the amount of illumination reaching the "read" side of the setup. The
adjustment wheel is cut to 0.15" diameter in the open position, decreasing to
0.060" diameter at 90° rotation and from 0.060" to 0.006" for rotation between
91-180°. A 6-32 Nylon thumbscrew locks the adjustment wheel in place.
With the proper FVA-UV attenuator adapter, users can connect the attenuator
directly to any light source that has a collimating lens at its aperture.
Sample Transmission Spectra
These sample transmission spectra show the FVA-UV adjustment wheel at various
positions.
(See Pictures)
Specifications
| Dimensions: |
1.5" x 1.5" x 1.0" |
| Assembly ports: |
3/8-24 threads for collimating lenses |
| Adjustment wheel: |
- Diameter = 3/32"
- Material = black anodized aluminum with knurled edge
|
| Adjustment wheel lock: |
6-32 Nylon thumb screw |
| Adapters: |
- FVA-UV to connect attenuator directly to UV light source with a
collimating lens at its aperture
- FVA-VIS to connect attenuator directly to VIS light source with a
collimating lens at its aperture
|
| Connector: |
SMA 905 |
Company Details
Ocean Optics is a leading supplier of solutions for optical sensing – fundamental methods of measuring and interpreting the interaction of light with matter. We enable diverse applications in medical and biological research, environmental... more
| More Products of this Company: |
74-series Lens Fixtures, 84-series Lens Fixture, 84-series Lens Fixture, Absorbing Glass Optical Filters, ACH-CUV-VAR Adjustable Collimating Lens and Cuvette Holder, ACH-CUV-VAR Adjustable Collimating Lens and Cuvette Holder, Adjustable Collimating Lens Holder, Cell for Capillary Electrophoresis, CFV-series FluoroVettes, Cosine Correctors for Emission Collection, CUV-ALL-UV 4-way Cuvette Holder for 1-cm Cuvettes, CUV-UV Holder for 1-cm Cuvettes, CUV-VAR Variable Pathlength Cuvette Holder, Cuvette Holder for 10-cm Cuvettes, CVD-UV and CVD-VIS Disposable Cuvettes, Diffuse Reflectance Standards, Electronic TTL Shutter, EviDot Semiconductor Nanocrystals, EviTag Water-stable Quantum Dots, FHS-UV In-Line Filter Holder, FHSA-series Filter and Cuvette Holder, FIA-SIA-LOV Sequential Injection Analysis System, Fiber Optic Scanning Monochromator, Flow Cell Kit for Flow Injection Analysis, Flow Cell Kit for Flow Injection Analysis, Fluorescence Flow Cell, Fluorescence Flow Cell, Fluorescence Flow Injection Analysis System, Fluorescence Standard, FOIS-1 Fiber Optic Integrating Sphere, FOS-2x2-TTL Inline Fiber Optic Shutter, Gershun Tube Kit, ISP-I Integrating Spheres, ISP-R Integrating Spheres for Reflectance, ISP-REF Integrating Sphere, ISS-2 Integrated Sampling System, ISS-UV-VIS Integrated Sampling System, Longpass Flow Cell, LTP-V Long Trace Profilometer, MPM-2000 Optical Multiplexer, Optical Post Mounts, Posts and Assemblies, Positive Displacement Pump, Power Supply & Controller for LEDs, Precision Optical Flats, Quartz Cells, Reflection and Transmission Stage, Right-angle Collimating Lens Holder, Right-angle Collimating Lens Holder, Shear-plate Collimation Testers, Single-point Reflection Stage, SpectroPipetter for Microliter-volume Samples, Specular Reflection Standard, Low Reflectivity, Specular Reflection Standards, High Reflectivity, Temperature-regulated Cuvette Holder and Kits, Thin Film Reference Wafer, Variable-angle Reflection Sampling System, Wireless-G Cable Gateway Cable Modem with Built-In Wireless-G Router, Wireless-N Broadband Router: Start a Wireless Network With Up To 4X the Range and 12X the Speed!, Wireless-N Gigabit Gaming Router: Build a high-speed wireless network optimized for gaming!, Wireless-N Gigabit Router with Storage Link: Start a Wireless Network With Up To 4X the Range and 12X the Speed!, Wireless-N Home Router: Start a Wireless Network With Up To 3X the Range and 9X the Speed! |
| Related Products: |
74-series Lens Fixtures, 84-series Lens Fixture, 84-series Lens Fixture, Broadband 200-1100 nm, CG-series Spectrometers, CHEM4-UV-FIBER Spectrophotometer, CHEM4-UV-FIBER Spectrophotometer, CHEM4-UV-VIS Spectrophotometer, CHEM4-VIS-FIBER Spectrophotometer, CHEM4-VIS-FIBER Spectrophotometer, CHEM4-VIS-NIR Spectrophotometer, CHEMUSB4-UV-VIS Spectrophotometer, CHEMUSB4-VIS-NIR Spectrophotometer, Cosine Correctors for Emission Collection, CUV-ALL-UV 4-way Cuvette Holder for 1-cm Cuvettes, CUV-UV Holder for 1-cm Cuvettes, CUV-VAR Variable Pathlength Cuvette Holder, Cuvette Holder for 10-cm Cuvettes, DTS-series MEMS-based NIR Spectrometers, EviDot Semiconductor Nanocrystals, EviTag Water-stable Quantum Dots, FHS-UV In-Line Filter Holder, FIA-SIA-LOV Sequential Injection Analysis System, Fiber Optic pH Sensors, Fiber Optic Scanning Monochromator, Flow Cell Kit for Flow Injection Analysis |
| Suitable For: |
light - spectrometer - spectrometers - Ocean Optics - sampling accessories - collimating lens - cuvette holder - cuvette - sampling systems for fluid analysis - fluorescence sampling tools - light collection tools - light measurement - flow cells - fluorovette - positive displacement pump - optical post mounts - reflection measurement tools - metrology - filter holder - mapping table - integrating sphere - reflectance standard - nanopositiioner - specular reflectance - absorbance standard - NIST - Raman standard - probe - cosine correction - radiometric standard -
|
|
|
|
