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Neutral Density Filters
Opticorp Inc. neutral density filters are precision glass substrates that have been coated with a metallic inconel coating to achieve specific transmission values for the visible through the near infrared. These coatings are designed for use at normal incidence but are not angle sensitive so they may be used at higher incidence angles. The coatings are durable and are cleanable using normal laboratory methods.
SPECIFICATIONS:
| S1: | 3 waves/inch flatness specified at 632.8nm (90% aperture) |
| 60/40 scratch/dig | |
| S2: | same as S1 |
| Substrate thickness: | .039 inches (1 mm) |
| Dimensions: | +/- 0.010 inches (+/-0.25mm) |
| Substrate material: | Optical quality float glass or Tempax |
| Typical performance: | Nominal density value quoted at 633nm. Useful range:350-2000nm |
| Available densities(transmission): | 0.1(79.4%), 0.2(63%), 0.3(50%), 0.5(31.6%), 0.7(20%), 1.0(10%), 1.3(5%), 1.5(3.2%), 2.0(1.0%) |
Neutral density filters are available in round or square shapes. Please request our catalog for ordering, pricing, and size information.
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To reach us:
Opticorp Inc.
10 Kidder Rd.
Chelmsford, MA 01824
PHONE: 978-250-8115
FAX: 978-250-1938
EMAIL: info@opticorp.com
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