Model: 3589-SR.
Overview
SmallRig 4 X 5.65 ND1.2 Filter (4 Stops), 4mm Thick Square Neutral Density Density Filter, with Multi-Layer Coatings Schott B270 Optical Glass, Fits for Matte B: a neutral density filter made from Optical Glass. Listed geometry: size 5.65 X 4 X 0.16 Inches. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Size | 5.65 X 4 X 0.16 Inches |
| Focus Type | 4 X 5.65 ND1.2 Filter |
| Item Weight | 11.3 Ounces |
| Model NO. | 3589-SR |
| Coating Description | Multi Coating |
| Supplier | GUANGZHOU EMILYFOTO CO., LTD |
What to specify when you request a quote
- Spectral target — state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- Blocking — give the blocking range and optical density (OD) the system needs.
- Angle of incidence — interference filters shift with angle, so specify the operating angle and cone.
- Size and thickness — listed as “5.65 X 4 X 0.16 Inches”; give outline, thickness and tolerance, and whether the filter is mounted.
- Substrate — listed as “Optical Glass”; name the substrate glass if thermal or UV behaviour matters.
- Surface quality — quote scratch-dig for imaging paths.
Engineering guides for this part
For material grades and coating options, see How to Select Neutral Density Filter Glass for Optical Instruments. How parts like this are machined and finished is covered in Borosilicate Glass Sandblasting for Consistent Matte Surface Processing. For an application example, read Precision Neutral Density Filter Glass for Appliance Optical Sensors. A related standard product is Neutral Density (ND) Filter.
