Plano-Convex Lenses, φ30 mm, Focal Distance: 90 mm, Back Focus : 86.6 mm

[Features]
- This optical lens having positive focal length is mainly used for magnification of image and light condensing.
- Made of quart, this product offers high transmittance in all regions from ultraviolet region to infra red ray wavelength region(approximately 900nm).
- Its low thermal expansion coefficient ensures excellent heat resistance.
- This product is usually used with curved surface of lens facing to object.
[Specifications]
- Outer diameter (φmm): 30
- Focus distance (mm): 90
- Bag focus (mm): 86.6
- Medium thickness (mm): 4.9
- Koba meat (mm): 2.15
- Material: Synthetic quartz
- Design wavelength: 587.6 nm
- Refractive index: 1.45850 /nd
- Chamfer (45°): 0.2-0.5 mm
- Tolerance range/Outer diameter: φ+0/-0.1 mm
- Tolerance range/Center thickness: ±0.2 mm
- Tolerance range/Focal length: ±2 ％
- Tolerance range/Surface quality: MIL60-40
- Tolerance range/Eccentricity: within 3 minutes (3')