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Location: Main > Imaging Components > Full Aperture Obstruction Glass Targets > OGT-R10-0670P
Name: DIA25.4mm Obstruction Target(Dot 670um/Positive)
P/N: OGT-R10-0670P
Keywords:Dia25.4x3.0mm,Obstruction Target,D670um/Positive
Unit Price: S$120.00/pc
Available: Call us
Request: Add to Request List
Introduction:
Product Features
Low-Reflectivity Chrome Obstruction Targets: Ø10um-Ø5000um Available
Obstructions Centered on DIA25.4mm Soda Lime Glass Substrates
Chrome OD >3.0 @ 400 - 2500nm)
100% Clear Aperture

Full Aperture Obstruction Targets consist of a low-reflectivity chrome obstruction centered on a soda-lime glass substrate. The full aperture opening outside the obstruction diameter is 100% surface cared. They are designed for applications such as zero-order beam blocking, investigating stray light, darkfield microscopy, or phase imaging.

The positive obstructions consist of low-reflectivity (LRC) chrome, which reduces back reflections from the opaque chrome target improving imaging contrast. The LRC coating results in <10% light reflected from the target from 300 - 500 nm. Our chrome glass target also provides an OD>3 @ 400 - 2500 nm.
Substrate:
Soda-lime glass, laser optics grade
Outer Diameter:
Dia 25.4,-0.1/0mm
Thickness:
0.12"(3.0mm)
Coating Material:
Chrome; Low reflection coating with R<10% @ 400-2500nm; Chrome pattern with optical density >3@ 400-2500nm
Critical Dimension:
2um design
Tolerance:
per +/-0.5um (higher price for less tolerance requested)
Orientation:
Chrome dot-pattern facing up
Pattern Design: Obstruction - centered dot with Diameter: 670.0um (Positive version with clear background)
Obstruction Centration +/-0.1mm (dot centered positioning)
Clear Aperture: 100% of surface 
Surface Quality: 40-20 S/D 
Surface Flatness: <lambda/4@ 633nm over 100% surface 
Parallelism:  <30 arc seconds
Drawing format:
GDS or DWG(in case for customized process with special patterns; Costs depend on design)
Surface Coating: Uncoated (AR coating on both surfaces per requests and additional charges apply) 
MOQ MOQ=5pcs (Minimum order quantity; Email us sales@optics.sg for pricing on volume order process)
 
 
 
 
 
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