Neutral Density Filters (Shape: Square)

FNP1050 - Gelatine Neutral Density Filters

FNP1050 - Gelatine Neutral Density Filters

Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a ...

Sold by: Knight Optical (UK) Ltd Ships from: United Kingdom
Specifications
Attenuator Type: Absorptive
Shape: Square
Size: 50 mm
Optical Density: 1
CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7

CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7

Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. ...

Sold by: Hellma USA INC Ships from: United States
Specifications
Certified Wavelengths: 329, 472, 512, 681, 875 nm
Optional Additional Wavelengths: 302, 329, 430, 472, 482, 512, 681, 875 nm
CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7A

CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7A

Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. ...

Sold by: Hellma USA INC Ships from: United States
Specifications
Certified Wavelengths: 270, 280, 297, 321, 342 nm
Optional Additional Wavelengths: 270 - 290 nm
Neutral Density Filter-Absorptive

Neutral Density Filter-Absorptive

These are Neutral Density Filters (Absorptive type). They are made of absorptive glass and feature 80/50 scratch/dig quality.  Please contact us for details and ordering info.

Sold by: Union Optic Ships from: China
Specifications
Parallelism: < 5 arc minutes
Flatness: < 2λ @632.8nm
Clear Aperture: > 90 %
Surface Quality: 80/50 scratch and dig
Design Wavelength: 400 - 700 nm
Square neutral density filters are essential for applications requiring uniform attenuation of light across the UV-VIS-NIR spectrum. These filters are available in both absorptive and reflective types, providing flexibility in managing light intensity for precision optical systems. Suppliers like Andover Corporation and Hellma USA INC offer a variety of these filters, ensuring compatibility with diverse scientific and industrial needs. On FindLight, buyers can easily compare specifications, request pricing, and connect directly with manufacturers without needing to register.