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檢視所有 25 產品系列

TECHSPEC 6.25mm Dia x -25mm Negative Doublet Lens FL MgF2 Coated

Stock #45-421
NT$1,998
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Qty 1-5
NT$1,998
Qty 6
NT$1,598
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Diameter (mm):
6.25 +0.0/-0.025
Effective Focal Length EFL (mm):
-25.00
Focal Length Tolerance (%):
±2
Back Focal Length BFL (mm):
-26.53
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
5.625
Centering (arcmin):
<1
Center Thickness CT 1 (mm):
1.00
Center Thickness CT 2 (mm):
2.00
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
-17.57
Radius R2 (mm):
11.48
Radius R3 (mm):
109.44
Edge Thickness ET (mm):
3.27
Substrate:
Surface Quality:
40-20
f/#:
4.00
Numerical Aperture NA:
0.13
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Bevel:
Protective bevel as needed
Type:
Negative Achromatic Lens
Wavelength Range (nm):
400 - 700

Regulatory Compliance

Reach 197:
RoHS 2015:

產品系列說明

TECHSPEC® MgF2 鍍膜負消色差透鏡由兩個黏合在一起的光學元件組成。負膠合雙透鏡針對色彩及軸上像差進行校正。TECHSPEC MgF2 鍍膜負消色差透鏡主要作為巴洛鏡頭,用於延伸焦距。這類透鏡通常搭配使用正消色差反射鏡系統及成像鏡頭。

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