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ISO 9001:2015Made in INDIA

Filters


Absorptive Neutral Density Filters
HO-NDA Series
Optical density ranges from 0.1 to 6.0
Variety of Schott materials Available
Prices are exclusive of taxes and other charges.

Absorptive Neutral Density Filters attain functions by absorbing light with minimal reflection. Holmarc’s absorptive neutral density filters are made by four special filter glass materials from Schott. Each schott filter glass material has a spectrally flat absorption coefficient in the visible region. Since optical density is a function of the type of glass material and thickness, by varying these we are able to produce the entire line of absorptive ND filters. Holmarc offers Absorptive ND filters in unmounted and mounted options. Optical density of the absorptive ND filter is related to the transmission by the following equation;


OD    =    log10    ( 1 / T ),  or  T    =  10-OD

Model No. Diameter
D ( mm )
Optical Density
(OD)
Material Price
Unmounted Mounted Unmounted Mounted
HO-NDA-12.5-0.1 HO-NDA-12.5M-0.1 12.5 0.1 NG11
HO-NDA-12.5-0.2 HO-NDA-12.5M-0.2 12.5 0.2 NG11
HO-NDA-12.5-0.3 HO-NDA-12.5M-0.3 12.5 0.3 NG11
HO-NDA-12.5-0.4 HO-NDA-12.5M-0.4 12.5 0.4 NG4
HO-NDA-12.5-0.5 HO-NDA-12.5M-0.5 12.5 0.5 NG4
HO-NDA-12.5-0.6 HO-NDA-12.5M-0.6 12.5 0.6 NG4
HO-NDA-12.5-1.0 HO-NDA-12.5M-1.0 12.5 1.0 NG4
HO-NDA-12.5-1.3 HO-NDA-12.5M-1.3 12.5 1.3 NG4
HO-NDA-12.5-2.0 HO-NDA-12.5M-2.0 12.5 2.0 NG9
HO-NDA-12.5-3.0 HO-NDA-12.5M-3.0 12.5 3.0 NG9
HO-NDA-12.5-4.0 HO-NDA-12.5M-4.0 12.5 4.0 NG9
HO-NDA-12.5-5.0 HO-NDA-12.5M-5.0 12.5 5.0 NG9
HO-NDA-12.5-6.0 HO-NDA-12.5M-6.0 12.5 6.0 NG1
HO-NDA-25-0.1 HO-NDA-25M-0.1 25 0.1 NG11
HO-NDA-25-0.2 HO-NDA-25M-0.2 25 0.2 NG11
HO-NDA-25-0.3 HO-NDA-25M-0.3 25 0.3 NG4
HO-NDA-25-0.4 HO-NDA-25M-0.4 25 0.4 NG4
HO-NDA-25-0.5 HO-NDA-25M-0.5 25 0.5 NG4
HO-NDA-25-0.6 HO-NDA-25M-0.6 25 0.6 NG4
HO-NDA-25-1.0 HO-NDA-25M-1.0 25 1.0 NG4
HO-NDA-25-1.3 HO-NDA-25M-1.3 25 1.3 NG4
HO-NDA-25-2.0 HO-NDA-25M-2.0 25 2.0 NG9
HO-NDA-25-3.0 HO-NDA-25M-3.0 25 3.0 NG9
HO-NDA-25-4.0 HO-NDA-25M-4.0 25 4.0 NG9
HO-NDA-25-5.0 HO-NDA-25M-5.0 25 5.0 NG9
HO-NDA-25-6.0 HO-NDA-25M-6.0 25 6.0 NG1
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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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   +91 920-719-7772 / 6 / 1
   sales@holmarc.com
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