CUSTOM WITNESS SAMPLE FABRICATION
Best practices suggest that when coating or setting up an optical component, it’s best to use a witness sample, also called a “test piece,” to ensure that the actual part will match your specific coating specifications and your application.
Sydor Optics also offers witness samples for the measurement of coating stresses on substrates. The size and thickness of a witness sample will typically match your finished product.
- Test samples available before the commitment of a high-volume run
Available Optical Substrates
Based upon customer demand, Sydor Optics offers Witness Samples made from the following optical substrate materials. Of course, if you don’t see a material you need, please contact a Sales Engineer, who will gladly discuss additional options that may be available.
- Color Filter Glass
- UV Bandpass
- Longpass
- SCHOTT GG395
- SCHOTT GG400
- SCHOTT GG420
- SCHOTT GG435
- SCHOTT GG455
- SCHOTT GG475
- SCHOTT GG495
- SCHOTT N-WG280
- SCHOTT N-WG295
- SCHOTT N-WG305
- SCHOTT N-WG320
- SCHOTT OG515
- SCHOTT OG530
- SCHOTT OG550
- SCHOTT OG570
- SCHOTT OG590
- SCHOTT RG1000
- SCHOTT RG610
- SCHOTT RG630
- SCHOTT RG645
- SCHOTT RG665
- SCHOTT RG695
- SCHOTT RG715
- SCHOTT RG780
- SCHOTT RG830
- SCHOTT RG850
- SCHOTT RG9
- Shortpass
- Multiband
- Color Compensating – Cyan
- Infrared Transmitting
- Light Balancing – Amber
- Light Balancing – Blue
- UV Transmitting / VIS Absorbing
- UV Transmitting
- UV Sharp Cut
- Color Compensating - Blue
- Light Balancing
Popular Materials - Crystal
- Magnesium Fluoride (MgF2)
Popular Materials - Display Glass
- Fused QuartzFused Quartz is made using high quality, natural quartz powders with several fusion methods. Quartz material is stronger than glass, can be used at high temperatures (<1050°C) and has a high average transmission of over 80% from 260nm to 2500nm. The various qualities of fused quartz allow for use in a wide range of applications from semiconductor applications to lower precision window applications in hostile environments.
- Heraeus HOQ 310
- Heraeus INFRASIL 301, 302
- Heraeus TSC Series
- Momentive i21 (Previously GE 124)
- Ohara SK-4304, SK-4306
- Tosoh N, OP, S Series
Popular Materials - Fused Silica
- Corning HPFS 7979 (UV & IR Grades)
- Corning HPFS 7980 (ArF Grade)
- Corning HPFS 7980 (KrF Grade)
- Corning HPFS 7980 (Standard Grade)
- Corning HPFS 8655
- Heraeus HOMOSIL 101, HERASIL 102
- Heraeus SUPRASIL 1, 2 (Grade A & B)
- Heraeus SUPRASIL 3001, 3002
- Heraeus SUPRASIL 311, 312
- Heraeus SUPRASIL 313
- Nikon NIFS (V, A, U, S Grade)
- Ohara SK-1300
- Ohara SK-1310
- Ohara SK-1320
- Tosoh ES, ED-H Series
Popular Materials - IR Materials
- Sapphire
- Zinc Selenide
Popular Materials - Optical Glass
Specfications | Measurements |
---|---|
Diameter | customer specified (typically 25mm – 50mm) |
Thickness | customer specified (typically 1mm) |
Thickness Tolerance | ± 0.1mm |
Cosmetics (MIL-PRF-13830B) | 60-40 to 20-10 |
Surface Roughness | ≥ 5 Ǻ rms |
Reflected Wavefront Error (RWE) - before coating | ≥ 1/10 wave over clear aperture |
Transmitted Wavefront Error (TWE) - before coating | ≥ 1/10 wave over clear aperture |
Clear Aperture | ≤ 95% |