11.0" x 11.0", 19" Focal Length, Fresnel Lens

Aspherically Contoured Fresnel Lenses

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Stock #32-690 5-7 Days
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NT$4,620
Qty 1-10
NT$4,620
Qty 11+
NT$4,095
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下載產品資料
Effective Focal Length EFL (mm):
482.60
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Acrylic
Coating:
Uncoated
Type:
Fresnel Lens
Wavelength Range (nm):
400 - 1100
Center Thickness CT (inches):
0.09
Dimensional Tolerance (inches):
±0.05
Dimensions (inches):
11.0 x 11.0
Dimensions (mm):
279.4 x 279.4
Effective Focal Length EFL (inches):
19.00
Effective Size (inches):
10.5 x 10.5
Groove Density (grooves/inch):
50.00
Index of Refraction nd:
1.49
Operating Temperature (°C):
80 (Maximum)
Thickness Tolerance (%):
±40
Transmission (%):
85 (Typical)

Regulatory Compliance

RoHS 2015:
Reach 224:
Certificate of Conformance:

產品系列說明

  • 正焦距
  • 方形及矩形選項
  • 適用於聚光應用

菲涅耳透鏡以輕量級塑膠薄膜表面上塑造的一系列同心溝槽,取代了傳統透鏡的曲面。這些溝槽可充當單獨的折射面 (以橫截面檢視時與微稜鏡相似),可將平行光以極為近似的方式折向共同焦距。由於透鏡很薄,所以因吸收而損失的光線量很少。菲涅耳透鏡在效率與影像品質之間實現折衷。高溝槽密度可帶來品質更高的影像,而低溝槽密度會產生更高的效率 (在聚光應用中需要)。在無限共軛系統中,透鏡刻有溝槽的一側應面向較長的共軛。

菲涅耳透鏡在聚光應用 (例如聚光系統或發射器/偵測器設備) 中最為常用。菲涅耳透鏡還可以用作放大鏡或投影透鏡,但是由於失真度高而不建議使用。

 
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