Specification resource

AOI, substrate and size fields for optical filter RFQs

Mechanical and geometry fields can change how an optical coating is reviewed, especially when the filter is used at an angle or inside a compact instrument path.

Optical filter request guide

AOI Substrate Size for optical filter RFQs

Prepare AOI Substrate Size fields for optical filter review with wavelength, bandwidth, blocking, geometry, product-family path, and RFQ checklist guidance.

What does AOI Substrate Size describe in an optical filter request?

AOI Substrate Size in the request package

AOI Substrate Size belongs in the first technical description because it shapes how an optical filter request is reviewed. Use the field to describe the intended spectral position, width, blocking need, geometry, or transmission context before asking for a drawing review or quotation.

Add the field to the technical RFQ package before sending drawings or spectra.

Why should this field be prepared before contacting Lumalyx?

Why the field matters before review

A clear value helps separate a general component search from a request that can be checked against filter family, wavelength band, coating context, substrate, and size constraints. When the value is uncertain, state the acceptable range or the measurement condition instead of forcing a single number.

Prepare known values, acceptable ranges, and measurement conditions.

Which values should a buyer prepare for AOI Substrate Size?

Values to prepare

Useful request notes include the target band or wavelength, bandwidth or blocking target, AOI, substrate, outside dimensions, quantity, application context, and any drawings or spectra that explain the optical path. Keep commercial timing separate from the technical fields so the first review can focus on feasibility.

List target values and attach supporting spectra when available.

Which product family should be reviewed with AOI Substrate Size?

Related product family path

Review the product family that matches the optical function first: bandpass filters for passband selection, longpass or shortpass filters for edge behavior, dichroic optics for beam splitting, neutral density filters for attenuation, and coated optics when the geometry or substrate is the main constraint.

Open the relevant product family, then return to the RFQ package.

How should AOI Substrate Size be written in an inquiry?

Request checklist

Write the field as a technical note rather than a sales summary. Include what is fixed, what can be adjusted, what documents are attached, and which application context matters most. This keeps the inquiry useful without asking the buyer to make unsupported performance assumptions.

Send the checklist with application context, target values, and document needs.

What documents can be requested for review?

Documents to ask about

A buyer can ask for product sheets, coating review notes, drawing review, or spectrum-related documents when those materials are needed for evaluation. The request should describe the project context and the exact document type needed so Lumalyx can route the response for technical review.

Ask for the document type needed and include the related field values.

Technical fields to prepare

Use these fields to turn the page topic into a reviewable Lumalyx request.

  • application context
  • target wavelength or band
  • blocking or OD target
  • AOI or geometry
  • substrate and size
  • quantity
  • documents or drawings

AOI changes the discussion

Angle of incidence can shift spectral behavior and should be included when the part is not used at normal incidence.

Substrate matters

Material, thickness and coating-side needs can affect what a reviewer must confirm before quoting.

Size is more than diameter

Clear aperture, mounted area, edge constraints and drawings often matter as much as nominal outside size.

Request context

State the angle when the optical path is not normal incidence.

AOI means angle of incidence. When light reaches a coated filter at an angle, the spectral discussion may change. Sending the angle, orientation and instrument path helps keep the review focused on the actual geometry.

Attach a simple drawing when the angle or mounting is hard to describe.

Representative coated optical filter component for specification preparation
Representative product visual for specification preparation.
What substrate information helps review?

Name known substrate, thickness and coating-side constraints.

If substrate material, thickness, coating side, wedge, surface size or environmental constraints are known, include them. If they are open decisions, mark them that way so the review does not assume a finished drawing.

Separate confirmed mechanical fields from open design questions.

Which size fields are useful?

Send outside size, clear aperture and drawing context together.

Nominal size alone can miss the real constraint. A request is clearer when it includes outside dimension, clear aperture, thickness, mounted region, edge handling and any holder or optical-path drawing.

Use the RFQ path when a custom size or drawing review is needed.

Which product families need these fields?

Geometry fields matter across filters and coated components.

Dichroic mirrors, beamsplitters, coated lenses, mirrors, prisms and custom-size filter discussions often need AOI and mechanical context. Bandpass and blocking requests may need the same fields when instrument geometry is constrained.

Browse coated optics or start a request with drawings attached.

Fields to prepare before review

These fields make the request easier to evaluate and show which values are confirmed, approximate or still open.

  • Angle of incidence
  • Substrate material if known
  • Thickness and coating side
  • Outside size and clear aperture
  • Mounting or holder drawing
  • Quantity and review stage
RFQ preparation

Turn known and open values into one request.

Send the values you know, mark uncertain fields clearly and include spectra, drawings or existing references when they help explain the signal path.

Start technical RFQ
Specification depth

Geometry fields can change how the optical request is reviewed.

AOI, substrate and size are not only mechanical details. They help define how the component will sit in the signal path and what needs review before RFQ discussion.

FieldSend whenReview note
AOIThe part is used at a non-normal angle or in a beamsplitting path.Include the working angle and orientation.
SubstrateMaterial, thickness or mounting is constrained.Send known substrate or mark it open.
Size and clear apertureThe part must fit a holder, beam or assembly.Attach a drawing when possible.

Common misconception

Wavelength fields alone do not define a reviewable part when angle, substrate or size is constrained.

Regional note

DACH, Japan and South Korea geometry pages should wait for evidence that local engineering buyers search or request these fields differently.

RFQ prompt

Attach drawings, holder constraints, beam size and AOI notes when geometry is a key requirement.

FAQ

Common specification questions.

These answers keep the request focused on reviewable engineering fields.

What does AOI mean in an optical filter request?

AOI means angle of incidence, the angle at which light reaches the optical surface. It should be included when the part is used at a non-normal angle.

Should I send a drawing for size review?

A drawing is useful when clear aperture, holder constraints, thickness or edge requirements matter. If no drawing exists, send the known dimensions and mark open fields.

Can substrate be left open?

Yes. If the substrate is not decided, mark it as open and include the optical task, size, thickness target if known and any environment constraints.