Name: 25mm Dia x -75mm FL Negative Doublet Lens MgF 2 Coated
Brand: TECHSPEC
SKU: 45-422
Price: NT$3,780

Diameter (mm):

25.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-75.00

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

-77.65

Focal Length Specification Wavelength (nm):

587.6

Clear Aperture CA (mm):

24.00

Centering (arcmin):

<1

Center Thickness CT (mm):

6.56 ±0.20

Center Thickness CT 1 (mm):

2.50 ±0.10

Center Thickness CT 2 (mm):

4.06 ±0.10

Radius R₁ (mm):

-46.07

Radius R₂ (mm):

36.65

Radius R₃ (mm):

108.00

Edge Thickness ET (mm):

8.90

N-BK7 / N-SF5

Surface Quality:

40-20

f/#:

3.00

Numerical Aperture NA:

0.17

Coating:

MgF₂ (400-700nm)

Coating Specification:

R_avg ≤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

RoHS 2015:

Compliant

Reach 219:

Compliant

Certificate of Conformance:

View

產品系列說明

氟化鎂(MgF₂)鍍膜
用於延伸焦距
也提供寬頻抗反射鍍膜負消色差透鏡

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。

25mm Dia x -75mm FL Negative Doublet Lens MgF2 Coated

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Regulatory Compliance

產品系列說明

25mm Dia x -75mm FL Negative Doublet Lens MgF₂ Coated