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Supplier: Daheng New Epoch Technology, Inc.
Description: Circularly variable neutral density filters are designed to simplify attenuation and beam splitting from VIS to near IR. The optical density gradually varies around a 270 circle for convenient attenuation adjustment by simply rotating the filter. Attenuation
- Diameter, Square Side, or Rectangular Length: 50 mm
- Thickness: 1.5 mm
- Optical Density: 3
- Substrate Material: BK7 Glass, UV grade Fused Silica
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Supplier: Gurley Precision Instruments
Description: Incremental OD Steps: -0.04 to 4.0 (clear center to dark edges), -4.0 to 0.04 (dark center to clear edges)
- Diameter, Square Side, or Rectangular Length: 50.799972568014816 mm
- Thickness: 1 mm
- Optical Density: 0.04 to 4
- Surface Quality: 60-40 Scratch / Dig
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Supplier: Thorlabs, Inc.
Description: At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the
- Diameter, Square Side, or Rectangular Length: 12.700000000000001 to 100 mm
- Rectangular Width: 10.000000000000002 to 25 mm
- Thickness: 0.56 to 6.300000000000001 mm
- Transmission Range: 200 to 16,000 nm
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Supplier: Newport MKS
Description: The 50FS01DV.1 is a circular variable metallic neutral density filter, made of UV grade Fused Silica, 50 mm in diameter, and coated for an OD range of 0-1.0. Newport’s Circular Variable Neutral Density Filter is designed to
- Thickness: 2 mm
- Wavelength Range: 250 to 2,500 nm
- Surface Flatness: λ/2
- Surface Quality: 80-50 Scratch / Dig
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Supplier: Newport MKS
Description: The 25FS04DV.4 is a circular variable metallic neutral density filter, made of UV grade Fused Silica, 25 mm in diameter, and coated for an OD range of 0-4.0. Newport’s Circular Variable Neutral Density Filter is designed to
- Thickness: 2 mm
- Wavelength Range: 250 to 2,500 nm
- Surface Flatness: λ/2
- Surface Quality: 80-50 Scratch / Dig
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Supplier: Newport MKS
Description: The 100FS04DV.4 is a circular variable metallic neutral density filter, made of UV grade Fused Silica, 100 mm in diameter, and coated for an OD range of 0-4.0. Newport’s Circular Variable Neutral Density Filter is designed to
- Thickness: 2 mm
- Wavelength Range: 250 to 2,500 nm
- Surface Flatness: λ/2
- Surface Quality: 80-50 Scratch / Dig
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Supplier: Newport MKS
Description: The 50FS02DV.2 is a circular variable metallic neutral density filter, made of UV grade Fused Silica, 50 mm in diameter, and coated for an OD range of 0-2.0. Newport’s Circular Variable Neutral Density Filter is designed to
- Thickness: 2 mm
- Wavelength Range: 250 to 2,500 nm
- Surface Flatness: λ/2
- Surface Quality: 80-50 Scratch / Dig
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Supplier: Gurley Precision Instruments
Description: Linear Adjustable Attenuation by Rotation, Variable Density Range from 0.0 to 4.0, Spectral Range: Optically Flat from 400nm to 700nm
- Diameter, Square Side, or Rectangular Length: 25 to 100 mm
- Thickness: 1.524 mm
- Optical Density: 0 to 4
- Surface Quality: 60-40 Scratch / Dig
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Supplier: Edmund Optics Inc.
Description: Complete Package Smooth Rotation Circular ND filters provide continuously variable, linear attenuation of incident light by rotating the filter about its center. The transmitted intensity is varied as a function of the optical density range. An inexpensive,
- Thickness: 2 mm
- Optical Density: 0 to 1.5
- Features: Infrared (IR), Neutral Density Filters
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Supplier: Edmund Optics Inc.
Description: Complete Package Smooth Rotation Circular ND filters provide continuously variable, linear attenuation of incident light by rotating the filter about its center. The transmitted intensity is varied as a function of the optical density range. An inexpensive,
- Thickness: 2 mm
- Optical Density: 0.04 to 3
- Features: Infrared (IR), Neutral Density Filters
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Supplier: Edmund Optics Inc.
Description: Complete Package Smooth Rotation Circular ND filters provide continuously variable, linear attenuation of incident light by rotating the filter about its center. The transmitted intensity is varied as a function of the optical density range. An inexpensive,
- Thickness: 2 mm
- Optical Density: 0.04 to 4
- Features: Infrared (IR), Neutral Density Filters
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Supplier: Edmund Optics Inc.
Description: Complete Package Smooth Rotation Circular ND filters provide continuously variable, linear attenuation of incident light by rotating the filter about its center. The transmitted intensity is varied as a function of the optical density range. An inexpensive,
- Thickness: 2 mm
- Optical Density: 0.04 to 3
- Features: Infrared (IR), Neutral Density Filters
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Supplier: SCHOTT AG
Description: filters: Bandpass filters (narrowband and broadband filters) Edge filters (longpass and shortpass filters) Notch filters (from single to triple notch) DUG 11: UV-transmittive filters without passbands at around 700 nm Hard bandpass filters
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Applications of ultrasensitive wavelength‐modulated differential photothermal radiometry to noninvasive glucose detection in blood serum
The intensity ratio of the two la- sers is controlled by a motorized variable circular neutral density filter (Reynard Corp, CA) placed in front of laser B and the phase shift between the two laser beams is sensitively controlled by the phase …
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The Infra Redtarget Generator (IRTG)
The variation of source radiance with apparent closure distance and aspect is generated by a servo controlled silicon circular variable neutral density filter (CVNDF) (Figure 5) capable of rotating .
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A Photon-Camera Star Tracker For Stellar Interferometry
A circular variable neutral density filter which is rotated by a stepper motor (shown in Figure 1) is responsible for performing this function.
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Visual System For The Boom Operator Part Task Trainer
A circular variable neutral density filter covering a range of N.D. 0 to N.D. 2 is used to compensate for these wide ranges of signal and scanning levels.
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Image projection optical system for measuring pattern electroretinograms
output beam first passes through a circular variable neutral density filter , attached to a stepper motor, which is used to vary the intensity of the projected fringe pattern.
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Compact, rugged, and inexpensive frequency-domain fluorometer
A circular variable neutral density filter is used to maintain a computer- programmable constant light input into the PMT and to provide dynamic range for the instrument.
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Time-resolved optical mammography between 637 and 985 nm: clinical study on the detection and identification of breast lesions
Circular variable neutral density filters , placed in front of each PMT, were used to optimize the illumination power during in vivo measurements and for the acquisition of the instrument response function, as changing the settings of the laser driver would affect the …
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HERMES at Mercator, competitive high‐resolution spectroscopy with a small telescope
To allow ac- quisition and guiding for a large range of brightness levels, a circular variable neutral density filter is used to attenuate from 0.1 to 100 %.
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Efficient Methods to Generate Reproducible Mass Spectra in Matrix-Assisted Laser Desorption Ionization of Peptides
In our original apparatus, we manually adjusted laser pulse energy by rotating a circular variable neutral density filter (model CNDQ-4-100.0 M, CVI Melles Griot, Albuquerque, NM, USA) installed immediately after the laser.
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Two-photon absorption in V-type chromophores with electron-rich heterocyclevinylene bridges
After passing through a circular variable neutral density filter that was used to con- trol the power of the laser, the laser was focused into the cell (polished on all sides) by a focusing lens (f=6 cm).