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Zygo

DVD400

Precision OpticsZygo DVD400 family
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The Zygo DVD400 is an interferometer system. The Zygo DVD400 provides high-accuracy, noncontact measurements of transmitted-wavefront quality for small lenses from 1.5 mm to 6 mm. The Zygo DVD400 uses a 405 nm laser diode light source.[1][2][3]

DVD400 — web.archive.org
Fig. 01DVD400web.archive.org[1]

Power

1 Hz < freq < 120 Hz[1]

Optics

Small lenses, 1.5 to 6 mm[1]

Control era

Windows XP

What it is

General reference — not yet source-verified

The DVD400 belongs to the class of optical interferometric test equipment used to evaluate lens quality without contact. The machine is intended for metrology of compact optical components rather than wafer processing.

How it works

The DVD400 uses a Fizeau interferometer architecture. The system uses a 405 nanometer laser diode light source and a high-resolution imaging system to measure and analyze the lens at its operating wavelength.[1][2][3]

The DVD400 supports selectable circular, horizontal, or vertical beam polarization. The DVD400 supports 1X, 2X, and 4X magnifications, with fields of view sized for different small-lens apertures.[1][2][3]

Where it fits in the process flow

The DVD400 fits in optical component inspection after lens fabrication and before final assembly into an optical pickup or related device. The machine supports measurement of transmitted-wavefront quality for process control and acceptance of small lenses.[1][2][3]

Applications

The DVD400 is used for small lenses in the range of 1.5 mm to 6 mm. The DVD400 is used for aspheric DVD pick-up lenses, and the system highlights midspatial frequency wavefront errors that matter for high-NA optical systems.[1][2][3]

The DVD400 provides point spread function and aberration coefficient analysis. The DVD400 can be used with birefringent samples by selecting circular, horizontal, or vertical beam polarization.[1][2][3]

  • DVD optical storage
  • audio-visual devices
  • aspheric DVD pick-up lenses
  • small lenses
  • birefringent samples
  • surface quality analysis
  • transmitted wavefront quality analysis

What do the numbers mean?

Power & electrical1

Vibration isolation
1 Hz < freq < 120 Hz[1]
Accurate?

Optics & imaging9

Target lens size
Small lenses, 1.5 to 6 mm[1]
Accurate?
Laser wavelength
405 ±5 nm[1]
Accurate?
Laser type
Laser diode, externally mounted, fiber coupled[1]
Accurate?
Laser classification
Class II[1]
Accurate?
Magnifications
1X, 2X, and 4X[1]
Accurate?
Optical centerline
4.25 in (108 mm)[1]
Accurate?
Alignment system
Twin spot, retroreflector assist, no reticle[1]
Accurate?
Data acquisition time
230 ms (low resolution, 5 frames of data)[1]
Accurate?
Light source
405 nm laser diode light source[1]
Accurate?

Performance2

Measurement type
High-accuracy, noncontact measurements of transmitted-wavefront quality[1]
Accurate?
Measurement
high-accuracy, noncontact transmitted-wavefront quality measurement[1]
Accurate?

Control & software2

Software
MetroPro metrology software[1]
Accurate?
Operating system
Microsoft Windows XP[1]
Accurate?

Configuration & options15

Maximum output power
≤ 2 milliwatts[1]
Accurate?
Output power at instrument aperture
≤ 1 milliwatt[1]
Accurate?
Beam polarization
Selectable: circular, horizontal, or vertical[1]
Accurate?
Coherence length
≥ 1 m[1]
Accurate?
Test beam diameter
6 mm at 1X, 3 mm at 2X, 1.5 mm at 4X[1]
Accurate?
Working distance
41 - 116 mm at 1X[1]
Accurate?
Spatial sampling
512 x 480 pixels (6 mm clear aperture at 1X zoom)[1]
Accurate?
Digitization
8 bits[1]
Accurate?
System quality
Plano testing 4 λ/10; transmitted wavefront testing λ/10[1]
Accurate?
Operating temperature
15 to 30°C (59 to 86°F)[1]
Accurate?
Rate of temperature change
< 1.0°C/15 minutes[1]
Accurate?
Humidity
5 to 95% relative, non-condensing[1]
Accurate?
Type
Fizeau interferometer system[1]
Accurate?
Target part size
small lenses (1.5 - 6 mm)[1]
Accurate?
Operating environment temperature
15 to 30°C (59 to 86°F)[1]
Accurate?

Vintage & configurations

Control-system eraWindows XP[1]

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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Vibration isolation1 Hz < freq < 120 Hz[1]

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Frequently asked questions

What type of optical measurement does the DVD400 perform?

The DVD400 performs high-accuracy, noncontact measurements of transmitted-wavefront quality.[1][2][3]

What lens size range does the DVD400 address?

The DVD400 is intended for small lenses in the range of 1.5 mm to 6 mm.[1][2][3]

What wavelength does the DVD400 use for measurement?

The DVD400 uses a 405 nanometer laser diode light source with a wavelength of 405 plus or minus 5 nanometers.[1][2][3]

What magnifications does the DVD400 provide?

The DVD400 provides 1X, 2X, and 4X magnifications.[1][2][3]

What analysis outputs are available on the DVD400?

The DVD400 provides measured results and statistical data, including point spread function and aberration coefficients.[1][2][3]

Not publicly documented

The following facts about the DVD400 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 DVD400 are on record.

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

  • No publicly documented variants, configuration options, or revision breakpoints of the DVD400 are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • No publicly documented failure modes or field errata for the DVD400 are on record.

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

  • The process node or technology generation of the DVD400 is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the DVD400 are on record.

    Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (3)Every fact above is drawn from these public sources
  1. [1]web.archive.org — web.archive.orgweb.archive.org
  2. [2]web.archive.org — web.archive.orgweb.archive.org
  3. [3]web.archive.org — web.archive.orgweb.archive.org
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Last updated Oct 5, 2026.

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