Name: 25mm Dia x 25mm FL 3-5μm AR Coated, Si Aspheric Lens
Brand: TECHSPEC
SKU: 89-617
Price: NT$24,430

Diameter (mm):

25.00 +0.00/-0.10

Effective Focal Length EFL (mm):

25.00 @ 4000nm

Numerical Aperture NA:

0.50

Back Focal Length BFL (mm):

22.50

Silicon (Si)

Aspheric Design Wavelength (nm):

4000

Asphere Figure Error, RMS @ 632.8nm:

λ/6

Coating:

BBAR (3000-5000nm)

Coating Specification:

R_avg <3% @ 3 - 5μm

Surface Accuracy, P-V (μm):

<0.3

Centering (arcmin):

≤10

Centering, ETD (μm):

<21.8

Surface Quality:

60-40

Clear Aperture CA (mm):

22.5

Edge Thickness ET (mm):

2.44

Center Thickness CT (mm):

3.80 ±0.10

f/#:

1.00

Bevel:

Protective bevel as needed

Edges:

Diamond Turned

Radius R₂ (mm):

43.582

Shape of Back Surface:

Concave

Type:

Aspheric Lens

Wavelength Range (nm):

3000 - 5000

Conjugate Distance:

Infinite

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

產品系列說明

繞射極限的效能
低密度，低色散
特別適用於對重量敏感的紅外線應用

TECHSPEC® 矽石非球面透鏡是適用於中波紅外線應用的高效能輕量級解決方案，可作為昂貴的ZnSe透鏡與易碎的鍺透鏡的理想替代方案。TECHSPEC®矽石非球面透鏡具備承受惡劣環境帶來的許多影響 (包括溫度與壓力的波動) 所需的機械與熱力學性質。由於矽石是低密度材料，因此這些透鏡也特別適用於對重量敏感的系統 (例如許多防護應用中的系統)。