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正焦距BK7弯月透镜
正弯月透镜一般用于减小另一透镜的焦距,同时保持镜头的的空间分辨率,通常将这些透镜与另一正透镜配对使用,以获得更好的聚焦效果。其材质包括但不限于BK7、紫外熔融石英、CaF2和ZnSe。 

材料...................................................................................BK7
设计波长......................................................................546.1nm 
设计折射率......................................................................1.5183
外径公差.............................................................+0.00,-0.15mm 
旁轴焦距误差............................±2%(f<400mm);±5%(f>=400mm)
中心偏.................................................................<3 arc minutes 
有效孔径..........................................................................>90% 
光洁度.............................................................................60-40
倒角..........................................................................保护性倒角

P/NfΦtctefb
30501100.025.44.02.597.5
30502125.025.44.02.8121.8
30503150.025.44.03.0146.3
30504175.025.44.03.1171.2
30505200.025.43.52.8197.0
30506250.025.43.52.9246.5
30507300.025.43.53.0296.3
30508350.025.43.53.1346.0
30509400.025.43.53.1395.8
30510500.025.43.53.2495.4
30511600.025.43.53.2595.3
30512800.025.43.53.3794.5
305131000.025.43.53.3993.7
305141500.025.43.53.41492.0
305152000.025.43.53.41990.2
305164000.025.43.53.53984.5
●尺寸单位:毫米
●其他规格和镀膜要求请联系EastOptics销售获得。