Customization: | Available |
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After-sales Service: | Repair for free |
Warranty: | 1 year |
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Description | |
Material: | Ohara S-TIM3 |
Schott N-SK5 | |
Diameter: | 18.0+0.0/-0.1mm |
Center thickness: | 5.0+/-0.2mm |
Effective focal length: | [email protected] |
R1: | 257.63mm,CX |
R2=R3: | 27.49mm,Doublet |
R4: | 52.04mm,CX |
Flatness: | S1&S2&S3&S4:3/8(7) |
Surface quality: | S1&S2&S3&S4:60-40 |
Centerness: | 4/3arcmin |
Clear aperture: | >D17.0mm |
Chamfer: | protected |
Coating: | S1&S4:AR coating,Ravg<0.5%@425-675nm |
Cementing: | Adhesive:NOA61 |
Standard: | ISO 10110 |