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檢視所有 25 產品系列

TECHSPEC 25mm Dia x -50mm FL Negative Doublet Lens MgF2 Coated

Stock #45-221
NT$3,330
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Qty 1-5
NT$3,330
Qty 6
NT$2,664
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Diameter (mm):
25.00 +0.0/-0.025
Effective Focal Length EFL (mm):
-50.00
Focal Length Tolerance (%):
±2
Back Focal Length BFL (mm):
-53.33
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
24.00
Centering (arcmin):
<1
Center Thickness CT 1 (mm):
2.50
Center Thickness CT 2 (mm):
4.06
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
-35.51
Radius R2 (mm):
24.58
Radius R3 (mm):
217.99
Edge Thickness ET (mm):
9.06
Substrate:
N-BAF10 / N-SF10
Surface Quality:
40-20
f/#:
2.00
Numerical Aperture NA:
0.25
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 191:
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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