Thorlabs索雷博 PS908L-A N-BK7直角棱镜

PS908L-A - N-BK7直角棱镜，L = 20 mm，直角面镀增透膜：350－700 nm

详情

特性

尺寸范围：3 mm - 60 mm
材料：N-BK7、紫外熔融石英、CaF₂或ZnSe
N-BK7棱镜可选斜面或两直角面镀增透膜

Thorlabs的高精度直角棱镜根据光源入射面不同，可以使光路偏转90°或180°。这些棱镜由N-BK7、紫外熔融石英、CaF₂或ZnSe制成，尺寸范围从3 mm到60 mm。我们的N-BK7直角棱镜可选不镀膜版本，或者在斜面或两直角面镀三种宽带增透膜之一(-A：350-700 nm、-B：650-1050 nm、-C：1050-1700 nm)，此增透膜能减少表面损耗。

由于全内反射(TIR)，直角棱镜可用作90°反射镜，如视频1.2所示。当光从棱镜的一个直角面入射时，光线会在斜面的玻璃/空气界面处发生全内反射，并从另一个直角面出射。直角棱镜能使入射光偏转90°，所以很合适替代反射镜。

直角棱镜还能用作180°回射器，如视频1.3所示。当输入光从棱镜的斜面入射时，光会在直角面的玻璃/空气界面发生全内内反射。并在经过下一个直角面时发生第二次全内反射，最后以平行于入射光束的方向从斜面出射。如同回射器一样，光路的180°偏转与入射角度无关。

关于如何根据您的应用选择合适的棱镜，请查看上面的棱镜指南标签。如需其他增透膜版本，请联系技术支持。

Table 2.1 General Specifications
Material	UV Fused Silica^a	N-BK7^a,b	CaF₂^a	ZnSe^a
Clear Aperture	70% of Face Length and Width
Surface Quality	40-20 Scratch-Dig			60-40 Scratch-Dig
Surface Flatness	λ/10 at 633 nm		λ/2 at 633 nm
Number of Polished Faces	3 (Triangular Faces are Fine Ground)

点击链接查看基底玻璃的详细规格。
PS911K规格请查看表2.2。

Table 2.2 PS911K Knife-Edge Prism Specifications
Material	N-BK7^a
Clear Aperture (Legs)	Entire Face Length And Width Excluding a 1.25 mm Border Along Beveled Edges (No Bevel Between the Two Legs)
Clear Aperture (Hypotenuse)	90% of Face Length and Width
Surface Quality	20-10 Scratch-Dig
Surface Flatness @ 633 nm	λ/8
Number of Polished Faces	3 (Triangular Faces are Fine Ground)

点击链接查看基底玻璃的详细规格

Right Angle Prism Drawing 图2.4：这些棱镜的尺寸由直角面边长L定义，下方产品列表中包含此参数。

未镀膜棱镜

Table 2.3 Uncoated Prisms Specifications
Item #	Material	L^a	X^a	Angle Tolerance	Dimensional Tolerance
PS605	UV Fused Silica^b	3 mm	4.2 mm	±10 arcmin	±0.2 mm
PS609		5 mm	7.1 mm	±3 arcmin	±0.2 mm
PS610		10 mm	14.1 mm	±3 arcmin	±0.2 mm
PS614		12.5 mm	17.7 mm	±3 arcmin	±0.2 mm
PS615		15 mm	21.2 mm	±3 arcmin	±0.2 mm
PS608		20 mm	28.3 mm	±3 arcmin	±0.2 mm
PS611		25 mm	35.4 mm	±3 arcmin	±0.2 mm
PS612		40 mm	56.6 mm	±3 arcmin	±0.2 mm
PS613		60 mm	84.9 mm	±3 arcmin	±0.2 mm
PS905	N-BK7	3 mm	4.2 mm	±10 arcmin	±0.1 mm
PS909		5 mm	7.1 mm	±3 arcmin	±0.1 mm
PS910		10 mm	14.1 mm	±3 arcmin	±0.1 mm
PS914		12.5 mm	17.7 mm	±3 arcmin	±0.2 mm
PS915		15 mm	21.2 mm	±3 arcmin	±0.2 mm
PS908		20 mm	28.3 mm	±3 arcmin	±0.1 mm
PS911		25 mm	35.4 mm	±3 arcmin	±0.1 mm
PS912		40 mm	56.6 mm	±3 arcmin	±0.1 mm
PS919		50 mm	70.7 mm	±3 arcmin	±0.1 mm
PS913		60 mm	84.9 mm	±3 arcmin	±0.1 mm
PS703	CaF₂	10 mm	14.1 mm	±10 arcmin	+0.0/-0.3 mm
PS706		12.5 mm	17.7 mm	±10 arcmin	±0.2 mm
PS707		15 mm	21.2 mm	±10 arcmin	±0.2 mm
PS704		25 mm	35.4 mm	±10 arcmin	+0.0/-0.3 mm
PS701	ZnSe	10 mm	14.1 mm	±10 arcmin	+0.0/-0.3 mm
PS702	ZnSe	25 mm	35.4 mm	±10 arcmin	+0.0/-0.3 mm

请看图2.4
Corning 7980标准熔融石英

已镀膜棱镜

Table 2.5 Coated Prisms Specifications
Item #	Material	L^a	X^a	Angle Tolerance	Dimensional Tolerance	AR Coating	AR Coating Performance
PS910H-A	N-BK7	10.0 mm	14.1 mm	±3 arcmin	±0.1 mm	350 - 700 nm, Hypotenuse	R_avg ≤ 0.5% at AOI = 0° Over Specified Wavelength Range
PS910H-B				±3 arcmin	±0.1 mm	650 - 1050 nm, Hypotenuse
PS910H-C				±3 arcmin	±0.1 mm	1050 - 1700 nm, Hypotenuse
PS910L-A				±3 arcmin	±0.1 mm	350 - 700 nm, Legs
PS910L-B				±3 arcmin	±0.1 mm	650 - 1050 nm, Legs
PS910L-C				±3 arcmin	±0.1 mm	1050 - 1700 nm, Legs
PS914H-A		12.5 mm	17.7 mm	±3 arcmin	±0.2 mm	350 - 700 nm, Hypotenuse
PS914H-B				±3 arcmin	±0.2 mm	650 - 1050 nm, Hypotenuse
PS914H-C				±3 arcmin	±0.2 mm	1050 - 1700 nm, Hypotenuse
PS914L-A				±3 arcmin	±0.2 mm	350 - 700 nm, Legs
PS914L-B				±3 arcmin	±0.2 mm	650 - 1050 nm, Legs
PS914L-C				±3 arcmin	±0.2 mm	1050 - 1700 nm, Legs
PS915H-A		15.0 mm	21.2 mm	±3 arcmin	±0.2 mm	350 - 700 nm, Hypotenuse
PS915H-B				±3 arcmin	±0.2 mm	650 - 1050 nm, Hypotenuse
PS915H-C				±3 arcmin	±0.2 mm	1050 - 1700 nm, Hypotenuse
PS915L-A				±3 arcmin	±0.2 mm	350 - 700 nm, Legs
PS915L-B				±3 arcmin	±0.2 mm	650 - 1050 nm, Legs
PS915L-C				±3 arcmin	±0.2 mm	1050 - 1700 nm, Legs
PS908H-A		20.0 mm	28.3 mm	±3 arcmin	±0.1 mm	350 - 700 nm, Hypotenuse
PS908H-B				±3 arcmin	±0.1 mm	650 - 1050 nm, Hypotenuse
PS908H-C				±3 arcmin	±0.1 mm	1050 - 1700 nm, Hypotenuse
PS908L-A				±3 arcmin	±0.1 mm	350 - 700 nm, Legs
PS908L-B				±3 arcmin	±0.1 mm	650 - 1050 nm, Legs
PS908L-C				±3 arcmin	±0.1 mm	1050 - 1700 nm, Legs

请看图2.4

Right Angle Prism Coating Reflectance

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