透镜
正弯月透镜
正弯月面透镜可用于增加正切透镜组件的数值孔径,而不会过度增加像差。 Pictures and drawings of Positive meniscus lenses:
正弯月面透镜可用于增加正切透镜组件的数值孔径,而不会过度增加像差。
Material: | BK7, Fused Silica, SF10, CaF2, Sapphire .etc. |
Paraxial Focal Length Tolerance: | ±2% |
Dimension Tolerance: | ±0.2(General). ±0.05(High Precision) |
Centration: | <3 arc min |
IRR: | λ/4@633nm(General),λ/10@633nm(High Precision) |
Clear Aperture: | >80%(Small Size), >95%(Laege Size) |
Surface Figure: | <1.5λ@633nm(General),<λ/4@633nm(High Precision) |
Surface Quality: | 60/40(General),10/5(High Precision) |
Bevel: | <0.25mm |
Coating: | Uncaoted, AR,PR, HR, etc. |