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Contrast Enhancement - Filter Colors
We offer a wide variety of choices, depending on your application
API offers circularly polarized and non-polarized filters in a wide variety of colors and transmission values. The choice of filter color is dependent on the type of display and the user's environment.
Circularly Polarized Filters
Our circular polarizers are laminated onto acrylic substrates*. The Rohm and Haas (RH) numbers listed below apply to the acrylic substrates. When combined with a circular polarizer, the color is slightly affected (the base CP is 38% transmission, neutral gray).
| Color |
Transmission |
|
|
| Neutral Grey |
37% |
|
| Neutral Grey |
10% |
|
| Red |
5% |
|
| Amber |
22% |
|
| Blue |
17% |
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| Green |
6% |
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| Note: We can custom make our filters to any color you require (with applicable minimums). |
Non-Polarized Acrylic Filters
The chart below presents just a few of the acrylic colors we offer. As with the circular polarized filters above, we can custom match to any color you need.
| Color |
Transmission |
RH Number |
|
| Gray |
32% |
2537 |
| Gray |
45% |
2094 |
| Gray |
76% |
2515 |
| Red |
11% |
2423 |
| Yellow |
77% |
2208 |
| Amber |
48% |
2422 |
| Bronze |
61% |
2539 |
| Bronze |
80% |
2540 |
| Blue |
8% |
2424 |
| Green |
26% |
2092 |
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