Product type: Triplet Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
Dia58mm Optical Triplet Lens Bandpass Filter and Anti-reflective Coating is a bandpass filter made from Optical Glass. Listed geometry: diameter 46.8+0.00/-0.05mm, cemented shape. Optical / electrical data: transmittance 90%-95%. Coating: Bandpass Filter and Ar Coating. It is used in Lighting, Medical, Optical, Photography and Astronomy. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Triplet Lens |
| Shape | Cemented |
| Diameter | 46.8+0.00/-0.05mm |
| Transmittance | 90%-95% |
| Coating | Bandpass Filter and Ar Coating |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Specifications | Items |
| Center thickness | 32.00+/-0.20mm |
| ROC1 | 317.90mm,CC |
| ROC2=ROC3 | 53.42mm,Doublet |
| ROC4=ROC5 | 35.71mm,Doublet |
| ROC6 | 92.82mm,CX |
| S1&S2&S3&S4&S5&S6 | 60-40 |
| Perpendicularity | <2arcmin with A and B |
| S1 | >D34.0mm |
| S2&S3 | >D40.4mm |
| S4&S5 | >D42.8mm |
| S6 | >D49.4mm |
| S1&S2 | 1.0+/-0.1mmx45deg |
| S3&S4&S6 | protected |
| S5 | 0.5+/-0.1mmx45deg |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Triplet Lens | Material: | Schott N-SF2 |
| Schott N-PSK53A | ||
| Schott N-SF57 | ||
| Diameter: | 46.8+0.00/-0.05mm | |
| 44.8+/-0.1mm | ||
| 58.0+/-0.1mm | ||
| Center thickness: | 32.00+/-0.20mm | |
| ROC1: | 317.90mm,CC | |
| ROC2=ROC3: | 53.42mm,Doublet | |
| ROC4=ROC5: | 35.71mm,Doublet | |
| ROC6: | 92.82mm,CX | |
| Surface quality: | S1&S2&S3&S4&S5&S6:60-40 | |
| Perpendicularity: | <2arcmin with A and B | |
| Clear aperture: | S1:>D34.0mm | |
| S2&S3:>D40.4mm | ||
| S4&S5:>D42.8mm | ||
| S6:>D49.4mm | ||
| Chamfer: | S1&S2:1.0+/-0.1mmx45deg | |
| S3&S4&S6:protected | ||
| S5:0.5+/-0.1mmx45deg | ||
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Spectral target — listed as “90%-95%”; state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- Blocking — give the blocking range and optical density (OD) the system needs.
- Angle of incidence — interference filters shift with angle, so specify the operating angle and cone.
- Size and thickness — listed as “46.8+0.00/-0.05mm”; give outline, thickness and tolerance, and whether the filter is mounted.
- Substrate — listed as “Optical Glass”; name the substrate glass if thermal or UV behaviour matters.
- Surface quality — quote scratch-dig for imaging paths.
Engineering guides for this part
For material grades and coating options, see Selecting Bandpass Filter Glass for Reliable Optical Performance. How parts like this are machined and finished is covered in Precision AR Coating Process for Optical Glass Windows. For an application example, read Bandpass Filter Glass for Appliance Light Detection Modules. A related standard product is Bandpass Filter.
