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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC®組件由愛特蒙特光學設計、指定或製造。進一步瞭解

12.5mm Dia. x 20mm FL, Uncoated, Ge Plano-Convex Lens

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Stock #25-552 20+ In Stock Other Coating Options
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NT$12,775
Volume Pricing
Qty 1+ NT$12,775 each
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Specifications

概況

Type:
Plano-Convex Lens

物理和機械特性

Diameter (mm):
12.50 +0.0/-0.1
Centering (arcmin):
<3
Center Thickness CT (mm):
1.40 ±0.10
Edge Thickness ET (mm):
1.07
Clear Aperture CA (mm):
11.25
Bevel:
Protective as needed

光學特性

Effective Focal Length EFL (mm):
20.00 @ 10.6µm
Back Focal Length BFL (mm):
19.65
Coating:
Uncoated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Germanium (Ge)
Surface Quality:
60-40
Radius R1 (mm):
60.08
f/#:
1.60
Numerical Aperture NA:
0.31
Wavelength Range (nm):
2000 - 14000

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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REACH 241:
Compliant
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產品概覽

  • 提供 3 - 5、3 – 12 以及 8 - 12µm 的鍍膜和無鍍膜選項
  • 低色散具有低色差
  • 適合於防禦、安全及熱成像等應用
  • 另有其他常見基材的 紅外透鏡可選
  • 由於鍺的材料供應鏈中斷，我們的鍺產品的交貨時間可能會增加，價格也會有所變動。欲了解更多訊息，請聯繫我們的客戶服務團隊。
  • Edmund Optics 的該零件號剩餘庫存有限，一旦耗盡，由於沒有原材料，將無法供應。 請聯絡我們的產品支援工程師，協助您找到滿足您需求的替代解決方案。客戶服務部門可為您提供最新的價格和供應情況"。

TECHSPEC® 鍺 (Ge) 平凸透鏡 (PCX) 採用精密金剛石車削基材，可提供無鍍膜或 3 - 12µm 的各種寬頻抗反射鍍膜選項。鍺(Ge)具有化學惰性、不溶於水、努氏硬度為 780，因此非常適合需要堅固光學元件的國防、安防以及熱成像應用。不過鍺會出現熱失控，因此應在低於 100°C 的溫度下使用，以確保最佳穿透效果。TECHSPEC® 鍺 (Ge) 平凸透鏡 (PCX)直徑為 12.5、25 和 50 mm。鍺的折射率很高（4.003），在沒有抗反射鍍膜的情況下會產生極大的菲涅耳反射損耗。TECHSPEC®鍺（Ge）平凸透鏡可提供無鍍膜或多種寬頻抗反射鍍膜（BBAR），以增強在中波紅外（MWIR）和長波紅外（LWIR）的穿透能力。

鍺特性的更多相關資訊，請查看以下選型指南 紅外（IR）應用的正確材料。

鍺因其高折射率、較大的穿透距離範圍和堅固的機械性能而廣泛應用。鍺的穿透範圍為 2 - 16 μm，且在可見光譜區是不透明的，因此十分適用於紅外雷射應用。但是，鍺會發生熱逸散現象，即隨著溫度的升高，穿透率會降低；事實上，鍺在 100°C 的溫度下幾乎是不透明的，在 200°C 的溫度下則完全沒有穿透性。當設計用於重量敏感系統的設備時，應考慮到鍺的高密度 (5.33 g/cm3) 特性。鍺的努氏硬度 (780) 約為氟化鎂的兩倍，這一特性使其成為有堅固光學元件要求的紅外線應用的理想之選。鍺不會與空氣、水、鹼金屬和酸（硝酸除外）發生反應。

Technical Information

AR COATED GERMANIUM

Typical transmission of a 3mm thick Ge window with BBAR (3000-5000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg <3% @ 3000 - 5000nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick Ge window with BBAR (3000-12000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg <5.0% @ 3 - 12μm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick Ge window with BBAR (8000-12000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg <3.0% @ 8 - 12μm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

特殊處理

Germanium Optics Handling and Cleaning Guidelines

Germanium optics require special handling and cleaning procedures. Always wear gloves during handling to prevent contamination, and wash hands afterward. Avoid contact between Germanium dust and the eyes, skin, or clothing. When not in use, store optics sealed and covered at temperatures between 20°C and 25°C. Do not expose them to temperatures exceeding 100°C when in use.

Handling Guidelines

  • Always wear gloves to prevent damage from skin oils.
  • If Germanium dust is present, take the following precautions:
    • Wear safety glasses to protect eyes.
    • Use a dust mask or face mask to avoid inhalation.
    • Wear gloves to prevent skin contact.
  • Maintain storage temperature between 20°C and 25°C with humidity below 30%.
  • Wrap Germanium optics in a lens cloth or pouch and seal in a container when not in use.
  • Germanium is brittle and heavy — always place it on soft surfaces and avoid dropping it.

Approved Cleaning Solvents

  • Ethanol
  • Isopropyl Alcohol
  • Methanol
  • Reagent-Grade Acetone
  • Liquid CO₂
  • Shop Now

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我們的核心能力包括:

  • 尺寸定制、材料定制、鍍膜定制等
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  • 嚴格的公差要求與復雜的幾何形狀加工
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