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OAI

200 Mask

LithographyOAI 200 Mask family
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200 Mask — Inventory photo
Fig. 01200 MaskInventory photo[1]

Performance

one micron[2]

Optics

4 New Color Video Cameras with Cross Hair[1]

What it is

The OAI 200 Mask is a photolithography mask aligner.[1][4][2]

The OAI Model 200 is a tabletop mask aligner used for photomask alignment and UV exposure of photoresist-coated substrates.[4][2]

How it works

The OAI Model 200 supports contact, soft-contact, and proximity exposure modes.[4]

The OAI Model 200 uses X, Y, and Z micrometers for alignment and an air bearing and vacuum chuck leveling system for parallel mask alignment and contact during exposure.[2]

Where it fits in the process flow

The OAI Model 200 is suited to research, limited-scale production, and pilot production.[3][2]

Applications

The OAI 200 is used for micro- and nanofabrication patterning.[4]

The OAI Model 200 is used in MEMS, photonics, microelectronic device fabrication, microfluidics, and BioMed work.[3][2]

What do the numbers mean?

Wafer handling2

Dual Windows in Chuck for 4" Wafers[1]
Accurate?
Chuck
dual windows in chuck for 4" wafers[1]
Accurate?

Optics & imaging7

4 New Color Video Cameras with Cross Hair[1]
Accurate?
XY Micrometers on Bottom Video Cameras[1]
Accurate?
Type
tabletop mask aligner[2]
Accurate?
Resolution
one micron[2]
Accurate?
Objectives
5x, 10x, and 2x objectives[3]
Accurate?
Exposure modes
contact, soft-contact, and proximity[4]
Accurate?
UV LED wavelengths
365nm, 405nm, or 436nm[2]
Accurate?

Performance4

Alignment precision
one micron[2]
Accurate?
Alignment accuracy
2 µm[3]
Accurate?
Alignment axes
X, Y, and Z micrometers[2]
Accurate?
Frontside alignment
designed for high-precision frontside alignment in microfabrication processes[3]
Accurate?

Configuration & options3

Double Sided[1]
Accurate?
Model
200[1]
Accurate?
Light source options
collimated Hg lamp UV light source or UV LED light source[2]
Accurate?

Vintage & configurations

Documented models & variants

DesignationGenerationVintageChangesSource
Model 200IR——Backside alignment configuration involving infrared illumination to align substrates bottom-side to mask.oainet.com[2]
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Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

What exposure modes does the OAI Model 200 support?

The OAI Model 200 supports contact, soft-contact, and proximity exposure modes.[4]

Not publicly documented

The following facts about the 200 Mask are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 200 Mask are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • The control-system platform and OS era of the 200 Mask are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the 200 Mask are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the 200 Mask is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the 200 Mask are on record.

    Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (5)Every fact above is drawn from these public sources
  1. [1]Inventory photo
  2. [2]oainet.com — oainet.comoainet.com
  3. [3]cleanrooms.research.ucf.edu — cleanrooms.research.ucf.educleanrooms.research.ucf.edu
  4. [4]equipment-tools.research.iu.edu — equipment-tools.research.iu.eduequipment-tools.research.iu.edu
  5. [5]Microfluidics and BioMed – OAI — oainet.com (Apr 20, 2026)web.archive.org
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Last updated Oct 12, 2026.

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