Optical Glass Color filters, Neutral Density filters

Neutral density filters attenuate, split or combine beams in a range of irradiance ratios with little dependence on wavelength.

Changchun Ruiqi offers two kinds of neutral density filters, which are neutral grey glass type filters and metallic coated type filters made of optical glass such as N-BK7, H-K9L Fused Silica and so on.

The thickness of neutral grey glass type filters determin the transmission, however, transmission is determined
by coating thickness in the metallic coated optical material type.

Specifications:

  Note for Interference Filter:
(1). Typical diameter is phi 10.0mm, 15.0mm, 20.0mm, 25.4mm, other size at shape of quadrate, triangular, 
       or other polygonals are available upon request.
(2). Typical size tolerance is ±0.2mm, better precision is available upon request.
(3). Typical parallelism is 3 arc minutes, better parallelism is available upon request
(4). Typical flatness is 2λ, high precision such as λ/2 is available upon request.
(5). Typical surface quality is 80/50, better precision such as 60/40, 40/20, 20/10 is available upon request.
(6). Optical density (D) is defined as the base 10 logarithm of the reciprocal of transmittance (T): 
       D=log(1/T) or T=10(-D), Besides the typical optical density listed as above, others are available upon request.

Why us?

1. Service Time: 24 hours waiting for you.

2.Fast Response:2 hours within our worktime,12 hours get off work.

3. Good Service:We can supply you from design,measure to coating one stop service

4.MOQ: No MOQ requirement, you can sent your order at any time

5. After-sales Service:If bad quality,we will refund.

How to Order?

Step 1. Send the inquiry at the bottom of the product.

Step 2. We will response or quote you within 24 hours.

Step 3.Place order through email,Skype,MSN,QQ directly.

Looking forward to doing bussiness with you in near future!!!