Red Optical Filter Glass
Regularly Requested Configurations
Red filter glass acts as a longpass filter in which light of long wavelength can pass through. Red filter glass blocks yellow, green, blue and UV light and passes all other wavelengths. Red filters are also called red sharp cut filters as they have a sharp transition from reflection to transmission making them ideal for various applications including digital imaging. Red longpass filters may also be used with monochrome cameras to increase contrast and resolution.
View red spectrum filter glass transmission curves
Red color filter glass comes standard 50mm square x 1mm, 2mm and 3mm thick, standard transparent finish 60/40 scratch/dig. Availability of product is subject to change based on current in stock inventory.
Please call or email us us for a quote.
Please note: Valley Design maintains a rotating stock of hundreds of items across variations of different material types, manufacturers, grades, dimensions, thicknesses, and tolerances. As our stock changes daily to meet the demand of our customers and their projects, items shown are representative of typically requested items but do not serve as a guarantee of current stock levels. We encourage you to
contact our Customer Service team to confirm the current stock level of your requested material and its specifications.
| Item# Red Filters |
Schott (equiv) |
Hoya (equiv) |
Geometry |
Thickness |
| FG-R600-1 |
— |
R-60 |
50mm x 50mm |
1mm+/- .1mm |
| FG-R600-2 |
— |
R-60 |
50mm x 50mm |
2mm+/- .1mm |
| FG-R600-3 |
— |
R-60 |
50mm x 50mm |
3mm+/- .1mm |
| FG-R610-1 |
RG 610 |
— |
50mm x 50mm |
1mm+/- .1mm |
| FG-R610-2 |
RG 610 |
— |
50mm x 50mm |
2mm+/- .1mm |
| FG-R610-3 |
RG 610 |
— |
50mm x 50mm |
3mm+/- .1mm |
| FG-R630-1 |
RG 630 |
— |
50mm x 50mm |
1mm+/- .1mm |
| FG-R630-2 |
RG 630 |
— |
50mm x 50mm |
2mm+/- .1mm |
| FG-R630-3 |
RG 630 |
— |
50mm x 50mm |
3mm+/- .1mm |
| FG-R640-1 |
RG 645 |
R-64 |
50mm x 50mm |
1mm+/- .1mm |
| FG-R640-2 |
RG 645 |
R-64 |
50mm x 50mm |
2mm+/- .1mm |
| FG-R640-3 |
RG 645 |
R-64 |
50mm x 50mm |
3mm+/- .1mm |
| FG-R650-1 |
— |
— |
50mm x 50mm |
1mm+/- .1mm |
| FG-R650-2 |
— |
— |
50mm x 50mm |
2mm+/- .1mm |
| FG-R650-3 |
— |
— |
50mm x 50mm |
3mm+/- .1mm |
| FG-R670-1 |
RG 665 |
— |
50mm x 50mm |
1mm+/- .1mm |
| FG-R670-2 |
RG 665 |
— |
50mm x 50mm |
2mm+/- .1mm |
| FG-R670-3 |
RG 665 |
— |
50mm x 50mm |
3mm+/- .1mm |
| FG-R700-1 |
RG 695 |
R-70 |
50mm x 50mm |
1mm+/- .1mm |
| FG-R700-2 |
RG 695 |
R-70 |
50mm x 50mm |
2mm+/- .1mm |
| FG-R700-3 |
RG 695 |
R-70 |
50mm x 50mm |
3mm+/- .1mm |
| FG-R720-1 |
RG 715 |
R-72 |
50mm x 50mm |
1mm+/- .1mm |
| FG-R720-2 |
RG 715 |
R-72 |
50mm x 50mm |
2mm+/- .1mm |
| FG-R720-3 |
RG 715 |
R-72 |
50mm x 50mm |
3mm+/- .1mm |