Filters
Reflective Neutral Density Filters attenuate the light beam by a combination of reflection and absorption. Holmarc’s reflective neutral density filters are made from BK7 or equivalent glass substrate with hard Inconel coating and are used to attenuate the intensity over a broad spectral region (350 - 1100 nm). Holmarc offers reflective neutral density filters in unmounted and mounted options. Optical density of the reflective neutral density filter is related to transmission by the following equation;
OD = log10 ( 1 / T ), or T = 10-OD
| Model No. | Diameter D ( mm ) |
Optical Density (OD) |
Price | ||
| Unmounted | Mounted | Unmounted | Mounted | ||
| HO-NDR-12.5-0.1 | HO-NDR-12.5M-0.1 | 12.5 | 0.1 | ||
| HO-NDR-12.5-0.2 | HO-NDR-12.5M-0.2 | 12.5 | 0.2 | ||
| HO-NDR-12.5-0.3 | HO-NDR-12.5M-0.3 | 12.5 | 0.3 | ||
| HO-NDR-12.5-0.4 | HO-NDR-12.5M-0.4 | 12.5 | 0.4 | ||
| HO-NDR-12.5-0.5 | HO-NDR-12.5M-0.5 | 12.5 | 0.5 | ||
| HO-NDR-12.5-0.6 | HO-NDR-12.5M-0.6 | 12.5 | 0.6 | ||
| HO-NDR-12.5-1.0 | HO-NDR-12.5M-1.0 | 12.5 | 1.0 | ||
| HO-NDR-12.5-1.3 | HO-NDR-12.5M-1.3 | 12.5 | 1.3 | ||
| HO-NDRA-12.5-2.0 | HO-NDR-12.5M-2.0 | 12.5 | 2.0 | ||
| HO-NDR-12.5-3.0 | HO-NDR-12.5M-3.0 | 12.5 | 3.0 | ||
| HO-NDR-12.5-4.0 | HO-NDR-12.5M-4.0 | 12.5 | 4.0 | ||
| HO-NDR-12.5-5.0 | HO-NDR-12.5M-5.0 | 12.5 | 5.0 | ||
| HO-NDR-12.5-6.0 | HO-NDR-12.5M-6.0 | 12.5 | 6.0 | ||
| HO-NDR-25-0.1 | HO-NDR-25M-0.1 | 25 | 0.1 | ||
| HO-NDR-25-0.2 | HO-NDR-25M-0.2 | 25 | 0.2 | ||
| HO-NDR-25-0.3 | HO-NDR-25M-0.3 | 25 | 0.3 | ||
| HO-NDR-25-0.4 | HO-NDR-25M-0.4 | 25 | 0.4 | ||
| HO-NDR-25-0.5 | HO-NDR-25M-0.5 | 25 | 0.5 | ||
| HO-NDR-25-0.6 | HO-NDR-25M-0.6 | 25 | 0.6 | ||
| HO-NDR-25-1.0 | HO-NDR-25M-1.0 | 25 | 1.0 | ||
| HO-NDR-25-1.3 | HO-NDR-25M-1.3 | 25 | 1.3 | ||
| HO-NDR-25-2.0 | HO-NDR-25M-2.0 | 25 | 2.0 | ||
| HO-NDR-25-3.0 | HO-NDR-25M-3.0 | 25 | 3.0 | ||
| HO-NDR-25-4.0 | HO-NDR-25M-4.0 | 25 | 4.0 | d> | |
| HO-NDR-25-5.0 | HO-NDR-25M-5.0 | 25 | 5.0 | ||
| HO-NDR-25-6.0 | HO-NDR-25M-6.0 | 25 | 6.0 | ||
Established in 1993, Holmarc Opto-Mechatronics Ltd manufactures variety of scientific and engineering instruments for research, industry and education.
ISO 9001:2015 Made in INDIA
CIN : L33125KL1993PLC006984
GST No : 32AAACH9492C1ZQ
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B.7., H.M.T. Industrial Estate
H.M.T. P.O, Kalamassery, Kochi
Kerala, India - 683 503
+91 920-719-7772 / 6 / 1
sales@holmarc.com
Mon - Sat : 9 am to 5 pm
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