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Precision Round Apertures |
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new!
 Spatial Filter Apertures
1 inch standard mount
blackened
high quality
from stock
fits most standard spatial filters. |
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Pinholes, Air Slits, and Custom Patterns for Optical, Laser,
Astronomy and other Scientific Applications
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Quality Standards:
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Roundness : Major axis - Minor axis
< 0.5μ on holes 1-15μ,
< 1μ on holes 20-50μ,
< 3μ on holes 100μ and up
Finish:Optical research quality
< 10µ-inch, on holes up to 50μ
< 50µ-inch, on holes 65μ-250μ
< 80µ-inch, on holes over 250μ
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Substrate Specifications:
- Finish: unblackened (see
options below)
- Material: 302 stainless steel, non-magnetic (except for hs option)
- Diameter: 3/8 inch (0.375 inch), 9.53mm
- positional tolerance: ø.006 inch (0.15mm)
thickness: 0.0005 inch (12.7μ) on holes 5μ and up. note: holes 0.5μ to 3.0μ,
and possibly up to 10um, include the hs option for supported ultra-thin drill region)
(0.5µm to 3.0µm holes are on 0.0001 inch - 0.0002 inch ni with .005in. backer)
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standard round pinholes
| cat. no. |
size (μ) |
tolerance |
| 1-0.5 |
0.5μ |
+0.3μ, -0μ |
| 1-1.0 |
1.0μ |
+0.5μ, -0μ |
| 1-2.0 |
2.0μ |
±0.5μ |
| 1-3.0 |
3.0μ |
± 0.5μ |
| 1-5.0 |
5.0μ |
± 1μ |
| 1-10 |
10μ |
± 1μ |
| 1-15 |
15μ |
±1.5μ |
| 1-20 |
20μ |
± 2μ |
| 1-25 |
25μ |
± 2μ |
| 1-30 |
30μ |
± 2μ |
| 1-35 |
35μ |
± 2μ |
| 1-40 |
40μ |
± 3μ |
| 1-50 |
50μ |
± 3μ |
| 1-75 |
75μ |
± 3μ |
| 1-100 |
100μ |
± 4μ |
| 1-150 |
150μ |
± 6μ |
| 1-200 |
200μ |
± 6μ |
| 1-300 |
300μ |
± 8μ |
| 1-400 |
400μ |
± 10μ |
| 1-500 |
500μ |
± 10μ |
| 1-600 |
600μ |
± 10μ |
| 1-700 |
700μ |
± 10μ |
| 1-800 |
800μ |
± 10μ |
| 1-900 |
900μ |
± 10μ |
| 1-1000 |
1000μ |
±10μ |
| 1-size
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up to 7,000 μ |
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Non-standard substrate diameter, thickness, material or tolerances:
Note: Finish specifications do not necessarily apply to diameters other than standard .375 in. |
Per Quote |
| Chemical Etching |
Per Quote |
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Standard Options
Standard Round Holes
| Option |
Description |
B-1 |
Poly black, one side, ultra high (98%) emissivity 5μ and up only
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B-2 |
Oxide, dull black, both sides 5μ and up only
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HS |
Extra heavy substrate, 0.005inch (0.127mm) thick, thinned down to required Ni thickness.
(included with 0.5μ -3.0μ apertures)  
Contact sales for sizes over 1000um with this option
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| CT |
Closer Tolerance; half of listed tolerance
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5-15 μ |
| 20μ-and up |
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standard mounts
| Mount |
Description |
M |
25mm blackened aluminum mount (24.95mm x 2.54mm thk) |
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| M-1 |
1 inch blackened aluminum mount (0.996 inch x 0.100 inch thk) |
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M-18 |
18mm blackened aluminum mount (18mm x 2.54mm thk) |
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m-0.5 |
0.5 inch blackened aluminum mount (0.496 inch x 0.050 inch thk) |
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Calibrations and Certifications
| Type |
Description |
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C |
Calibrated; actual size, ± 0.5 μ or 1% (5 μ and up ) |
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