Viewport

Available in multiple material types and surface treatments to allow for optimal transmission of specified wavelengths

Optical disk used for viewing only uses borosilicate glass such as 7056 or Kodial. For optical critical applications, fused silica, quartz, sapphire, Pyrex are used. Choose optical material that has a high transmission at the wavelength of interest.

Kodial viewport can withstand repeated bakeout cycle to 350° C. However, to avoid thermal stress, the heating rate should not exceed 2 deg. per minute. Finger-tight the bolts; usecross-flange tightening pattern, and never rotate any particular bolt more than 1/8 turn at a time.

UV grade fused silica viewports has a bakeout temperature of 2000C. Sapphire Viewport has a bakeout temperature of 4500C.

Pyrex Viewports provide a convenient and economical solution forvacuum systems requiring periodic glass subtrate replacement. Applications like vacuum coating will deposit materials on viewports which will eventually render them useless. The Pyrex substrate is sealed against an gasket and clamped in place with an aluminum flange which prevents metal to glass contact.

Please email your inquiry to support@vacproducts.com or call (510) 498-8518 and our engineering team will recommend a suitable viewport for your application.

HV ViewPorts
Standard Specification
Application : High Vacuum
Flange Materials : SUS304, SUS316L
Vacuum Range: 760 Torr ~ 1 x 10^-9Torr
Glass Materials : Borosilicate

Clamp Type

Part Number	Flange size	V	A	B
ISO 63-VP	ISO 63	60.20	130	22
ISO100-VP	ISO 100	97.30	165	22
ISO160-VP	ISO 160	148.10	225	26

Weld Type

UHV ViewPorts
Standard Specification
Application : Ultra High Vacuum
Vacuum Range: 760 Torr ~ 1 x 10^-13Torr
Glass Materials : Kodial
Flange Materials : SUS304, SUS316L

P/N	A mm	B mm	V mm	view angle	max. temp	min. temp
CF1.33-VP	34	8.0	15.8	65	400 C	-170
CF2.75-VP	70	13.0	38.0	98	400 C	-170
CF4.53-VP	114	17.5	63.6	120	400 C	-170
CF6.00-VP	152	20.0	89.2	122	400 C	-170
CF8.00-VP	203	22.0	137.0	140	400 C	-170