SIGMAKOKI CO., LTD.

61-6929-33 45 °Knife Edge Coated Right Angle Prism 20mm KRPB4-20-550

Features

  • This is a prism with a sharp finish of the right edge sandwiching the bottom of two sides by polishing.
  • Since the right-angled ridge is not chamfered, the line of the right-angled ridge becomes very thin when peeking from the slope side, and you can observe the natural reflection image without any seam.
  • The width of the right-angled ridge is so narrow and straight that it can be used as a reference line in an observation system.
  • Total reflection at the critical angle is obtained when using light with an incident angle of 0±5.7 degrees for the slope.
  • * The knife edge of the right-angled ridge is very easy to chip, so please handle it carefully so that it does not come into contact with anything else.
  • * The knife edge cannot be wiped with lens paper.
  • * Use an air blower to blow out the garbage before use.
  • * Since the measured A dimension includes a chamfer, it is slightly shorter.
  • * The tolerance is defined by the sides of the triangle formed by the slope and the two bases.
  • * Reflectivity above the critical angle is about 100% reflection, but there is a loss of about 8% due to reflection of the entrance/exit face of the prism.
  • * Fingerprints or dirt on the uncoated surface may prevent total reflection even if the angle is higher than a critical angle.
  • * Do not let the no-coat surface come in contact with anything.

Spec

  • [ common specification]
  • Material: BK7 (refractive index n d=1.517)
  • Edge processing: Straight angle edge division: Knife edges (chamfer none), Edge in other: C chamfer
  • Coating: 2 faces sandwiching the straight angle: Al + MgF 2 (protection film), Slope: No coat
  • Laser durability: 0.25J/cm2 (pulse width 10ns, Repeat frequency 20Hz)
  • Effective range: Circle or ellipse inscribed to 90% of the length of the sides
  • [Individual specification]
  • A=B: 20mm
  • Base material surface accuracy: λ/4
  • Angle degrees accuracy (90°): ±1′
  • Angle degrees accuracy (45°): ±1′
  • Scratch - dig: 40?20
  • RoHS conform product
  •  
Order No. 61-6929-33
Model No. KRPB4-20-550
Standard price JPY: 22,400 USD: 140.41
Excange rate 1USD= 159.53JPY
Valid price in Japan
Quantity 1piece
Stock in Japan
Supplier Stock

Product Variations (Different Sizes, Specifications, Optional Products, etc.)

Product image Order No. Name Model No. Quantity Standard price Valid price in Japan Stock
[Supplier Stock]
61-6929-21 45°Knife Edge Right Angle Prism 10mm Base Material Surface Flatness λ/4 KRPB-10-4M KRPB-10-4M 1piece JPY: 7,800 USD: 48.89

61-6929-22 45°Knife Edge Right Angle Prism 15mm Base Material Surface Flatness λ/4 KRPB-15-4M KRPB-15-4M 1piece JPY: 12,500 USD: 78.36

61-6929-23 45°Knife Edge Right Angle Prism 20mm Base Material Surface Flatness λ/4 KRPB-20-4M KRPB-20-4M 1piece JPY: 19,800 USD: 124.12

61-6929-24 45°Knife Edge Right Angle Prism 25mm Base Material Surface Flatness λ/4 KRPB-25-4M KRPB-25-4M 1piece JPY: 26,100 USD: 163.61

61-6929-25 45°Knife Edge Right Angle Prism 30mm Base Material Surface Flatness λ/4 KRPB-30-4M KRPB-30-4M 1piece JPY: 37,600 USD: 235.69

61-6929-26 45°Knife Edge Right Angle Prism 10mm Base Material Surface Flatness λ/10 KRPB-10-10H KRPB-10-10H 1piece JPY: 12,500 USD: 78.36

61-6929-27 45°Knife Edge Right Angle Prism 15mm Base Material Surface Flatness λ/10 KRPB-15-10H KRPB-15-10H 1piece JPY: 18,800 USD: 117.85

61-6929-28 45°Knife Edge Right Angle Prism 20mm Base Material Surface Flatness λ/10 KRPB-20-10H KRPB-20-10H 1piece JPY: 31,300 USD: 196.20

61-6929-29 45°Knife Edge Right Angle Prism 25mm Base Material Surface Flatness λ/10 KRPB-25-10H KRPB-25-10H 1piece JPY: 40,700 USD: 255.12

61-6929-30 45°Knife Edge Right Angle Prism 30mm Base Material Surface Flatness λ/10 KRPB-30-10H KRPB-30-10H 1piece JPY: 47,000 USD: 294.62

61-6929-31 45 °Knife Edge Coated Right Angle Prism 10mm KRPB4-10-550 KRPB4-10-550 1piece JPY: 10,400 USD: 65.19

61-6929-32 45 °Knife Edge Coated Right Angle Prism 15mm KRPB4-15-550 KRPB4-15-550 1piece JPY: 15,100 USD: 94.65

61-6929-33 45 °Knife Edge Coated Right Angle Prism 20mm KRPB4-20-550 KRPB4-20-550 1piece JPY: 22,400 USD: 140.41

61-6929-34 45 °Knife Edge Coated Right Angle Prism 25mm KRPB4-25-550 KRPB4-25-550 1piece JPY: 29,200 USD: 183.04

61-6929-35 45 °Knife Edge Coated Right Angle Prism 30mm KRPB4-30-550 KRPB4-30-550 1piece JPY: 40,700 USD: 255.12