400-1100nm Optical Glass Filters N-BK7 Reflective Neutral Density Filter

Overview:

Reflective Neutral Density (ND) Filters provide uniform attenuation over the broad spectral range from 400 to 1100 nm.

Reflective ND filters consist of an N-BK7 glass or UV fused silica substrate with a metal (Inconel) coating deposited on one side. Inconel is a metallic alloy that ensures flat spectral response from the UV to the near IR. To prolong the lifetime of reflective ND filters, we recommend using non-contact cleaning methods (such as compressed air) to prevent damage to the coating and avoiding the use of these filters in humid environments to prevent oxidation.

Although these are reflective ND filters, the Inconel coating does absorb some of the incident light, which limits the use of these filters to low-power applications.

To achieve the best performance, light should be incident on the side with the Inconel coating, this allows attenuation to occur before etalon effects occur within the filter's substrate.

General Specifications Of Reflective Neutral Density (ND) Filter:

Standard Products Of Reflective Neutral Density (ND) Filter:

Spectrum Graphs of Reflective Neutral Density (ND) Filter:

Who We Are?

Wuhan Star Optic Technology Co., Ltd as a registered Hi-Tech company has been focusing on manufacturing high precision of optical components ever since its foundation in 2017. It is located in Wuhan Optics Valley of China and was founded as a masterwork of our founders with more than 20 years background in production, R&D and supply chain of optical components. The company holds 30+ patents for design, production and inspection allows us to manufacturing professionally and technologically. With high quality standard, meticulous workmanship, strict quality control, professional service, Star Optics aims to provide our customers and partners with win-win cooperation.

What We Do?

1, Products and Applications:

Products: our products mainly fall into the following five categories.

• Optical Elements: Optical Materials, Lenses, Windows, Mirrosr, Beamsplitters, Prisms, Filters
• Polarizing Optics: Waveplates, Polarizers, Polarizing Beamsplitters, Depolarizers, Brewster Windows, Quartz Polarization Rotatosr, Optical Isolators, Lateral Displacement Polarization Beamsplitters
• Crystals: Laser Crystals, Nonlinear Crystals, Passive Q-Switch Crystals, E-O Crystals, Birefringent Crystals
• Coatings: Anti-Reflective Coatings, Partial Reflective Coatings, High Reflective Coatings, Polarization Beamsplitter Coatings, Non-Polarizing Beamsplitter Coatings, Dichroic Coatings, Interference Filter Coatings
• Optomechanics: Optical Mounts

Applications: our products are widely used in Lasers, Laser Processing Machines, Precision Measuring Instrument, Automation Equipment, Micro Measurement Systems, Surveying Equipment, Non-Destructive Testing, Medical and Biological Imaging, Fiber Communication, and etc. With the company concept of Result-driven, Detail-oriented, Client-focused, our products are well acknowledged and widely used in industry and science by North America, Europe and Southeast Asia.

2, Design:

You have full design freedom, and we are able to work with complex designs to get you exactly what you need including optical design, mechanical design and optical coating design.

3, Production:

Have the ability to transfer designs into production from prototyping to serial production. Production process like grinding, polishing, centering, coating and measuring process are carried out by both manual and CNC machines.

4, Inspection:

The measurement process during and after production are carried out with precision metrology equipment, high sensitive interferometers and spectrometers. Measurement reports either e-version or paper-version will be provided upon shipment.

5, Packing:

Safe and dust-free packing are chosen to ensure you receive your products safe and sound and can use directly in your production lines.

6, Measuring Service:

You might have had experiences that you are using a product, but not clear about the exact specifications making you hesitate to source better options. Sending us a sample will allow us to help you figure out the details and transfer it to production.

Please contact us by follow ways if you don’t see what you are looking for in our standard product lines.