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Flanges & Components > Viewports & Shutters > ConFlat (CF) Flanged Viewports

CF Flanged Zero Length Laser Transmission Viewports

Laser Transmission Series Viewports Feature:

  • Leak Rate <2x10-10 atm cc/sec He
  • Parallelism <10 Arc Seconds
  • 304L Stainless Steel Flange
  • λ/4 @ 632nm Transmitted Wavefront
  • Surface Finish 20/10
  • Temperature Range -100°C to 200°C
  • Corning HPFS 7980 Fused Silica
  • Homogeneity Grade A
  • Inclusion Class 0
  • R<0.25%

NOTE: For safety, we strongly recommend that no viewport is exposed to a temperature ramp of greater than 2-3°C per minute, and that no viewport be exposed to direct thermal radiation. To limit thermal gradients when heating viewports, we recommend the viewing area and the flange be covered with many layers of aluminum foil to act as a reflective shield.

All viewports are fragile and should be handled and mounted with extreme caution. CF flanged viewports require a fully annealed copper gasket. Never scratch the viewing area-a weakened viewport may implode (or explode under wrong conditions). Make sure the "glass" chosen has a reasonable transmission at the wavelengths of interest. And remember, what is not transmitted may be reflected or absorbed.

Viewport Cleaning Procedure Guide For a guide on Viewport Cleaning Procedures, please click here.


Dimensional Drawings

Charts

Got VacuCADSM?
VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table

(Click column headers to sort data)

Flange
Size/OD
Type View
Area
Coating Transmission
Grade
Threshold
(10ns pulse)
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
Type View
Area
Coating Transmission
Grade
Threshold
(10ns pulse)
PartNo Price Add Item
VacuCADSM
2-3/4" 193nm ArF Excimer Laser 1.4 V-Coat 193nm Excimer Grade 1J/cm2
VPZL-275LARF
$1,025.00
N/A
2-3/4" 780nm Diode Laser 1.4 V-Coat 780nm DUV Grade 10J/cm2
VPZL-275LDIO
$773.00
N/A
2-3/4" 248nm KrF Excimer Laser 1.4 V-Coat 248nm DUV Grade 1J/cm2
VPZL-275LKRF
$773.00
N/A
2-3/4" 1064nm YAG Laser 1.4 V-Coat 1064nm DUV Grade 10J/cm2
VPZL-275LYAG
$773.00
N/A
4-1/2" 193nm ArF Excimer Laser 2.69 V-Coat 193nm Excimer Grade 1J/cm2
VPZL-450LARF
$2,122.00
N/A
4-1/2" 780nm Diode Laser 2.69 V-Coat 780nm DUV Grade 10J/cm2
VPZL-450LDIO
$1,376.00
N/A
4-1/2" 248nm KrF Excimer Laser 2.69 V-Coat 248nm DUV Grade 1J/cm2
VPZL-450LKRF
$1,400.00
N/A
4-1/2" 1064nm YAG Laser 2.69 V-Coat 1064nm DUV Grade 10J/cm2
VPZL-450LYAG
$1,400.00
N/A
Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at 1-412-387-9200 or email international@lesker.com with your inquiry.

Accessories Table

Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Viewport Shutters (Manual)
VPZL-275 Viewport
1
n/a
--
DS275VPS
$1,000.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-275 Viewport
1
n/a
--
DS275VPS-P
$1,747.00
(please log in)
Viewport Shutters (Manual)
VPZL-450 Viewport
1
n/a
--
DS450VPS
$1,092.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-450 Viewport
1
n/a
--
DS450VPS-P
$1,829.00
(please log in)
Viewport Shutters (Manual)
VPZL-463 Viewport
1
n/a
--
DS462VPS
$1,195.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-463 Viewport
1
n/a
--
DS462VPS-P
P.O.R.
(please log in)
Viewport Shutters (Manual)
VPZL-600 Viewport
1
n/a
--
DS600VPS
$1,221.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-600 Viewport
1
n/a
--
DS600VPS-P
P.O.R.
(please log in)
Viewport Shutters (Manual)
VPZL-800 Viewport
1
n/a
--
DS800VPS
$1,242.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-800 Viewport
1
n/a
--
DS800VPS-P
P.O.R.
(please log in)
1/4—28 x 1-3/8" Bolt & Nut Set
2-1/8" (DN25CF)
25
1 (0.45)
--
HBS25028138
$30.30
(please log in)
1/4—28 x 1-3/8" Bolt & Nut Set
2-3/4" (DN35-DN40CF)
25
1 (0.45)
--
HBS25028138
$30.30
(please log in)
5/16—24 x 1-3/4" Bolt & Nut Set
3-3/8" (DN50CF)
25
2 (0.91)
--
HBS31224175
$39.00
(please log in)
5/16—24 x 2" Bolt & Nut Set
4-1/2" (DN63CF)
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16—24 x 2" Bolt & Nut Set
4-5/8" (DN75CF)
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16—24 x 2" Bolt & Nut Set
6" (DN100CF)
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
6-3/4" (DN125CF)
25
2 (0.91)
--
HBS31224225
$39.00
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
8" (DN160CF)
25
2 (0.91)
--
HBS31224225
$39.00
(please log in)
5/16—24 x 2-1/2" Bolt & Nut Set
10" (DN200CF)
25
2 (0.91)
--
HBS31224250
$29.90
(please log in)
3/8—24 x 3" Bolt & Nut Set
13-1/4" CF
30
4 (1.81)
--
HBS37524300
$48.00
N/A
Fully Annealed Copper Gasket
6" (DN100CF)
5
1-1/2 (0.68)
--
VZCUA100
$32.00
(please log in)
Fully Annealed Copper Gasket
8" (DN160CF)
5
2 (0.91)
--
VZCUA150
$50.00
(please log in)
Fully Annealed Copper Gasket
1-1/3" (DN16CF)
5
1/4 (0.11)
--
VZCUA19
$15.00
(please log in)
Fully Annealed Copper Gasket
10" (DN200CF)
5
3 (1.36)
--
VZCUA200
$66.00
(please log in)
Fully Annealed Copper Gasket
2-1/8" (DN25CF)
5
1/4 (0.11)
--
VZCUA25
$20.20
N/A
Fully Annealed Copper Gasket
2-3/4" (DN35-DN40CF)
5
1/4 (0.11)
--
VZCUA38
$21.30
(please log in)
Fully Annealed Copper Gasket
3-3/8" (DN50CF)
5
1/2 (0.22)
--
VZCUA54
$24.60
N/A
Fully Annealed Copper Gasket
4-1/2" (DN63CF)
5
3/4 (0.34)
--
VZCUA64
$26.60
(please log in)
Fully Annealed Copper Gasket
4-5/8" (DN75CF)
5
1 (0.45)
--
VZCUA76
$27.90
N/A
Gasket Removal Tool
All CF Flanges
1
1/4 (0.11)
--
VZGRT
$38.00
N/A
4 oz. Tube Anti-Seize Thread Lube
All CF Flanges
1
1/4 (0.11)
--
VZTL-4OZ
P.O.R.
N/A

ISO:9001 The Kurt J. Lesker Company is an ISO:9001 certified company. Copyright ©1996-2017 Kurt J. Lesker Company® All rights reserved.