OD and transmission describe different sides of an optical request. RFQs are clearer when blocking targets, pass targets and the working wavelength range are separated.
Prepare OD Vs Transmission fields for optical filter review with wavelength, bandwidth, blocking, geometry, product-family path, and RFQ checklist guidance.
Use the comparison to separate optical functions, request fields, and review questions. The page should help a buyer understand how to describe the need, not declare that one option can stand in for another without technical review.
Identify the actual optical function before choosing a family.
Confusion often starts when a short term is used without wavelength, bandwidth, blocking, AOI, substrate, or application context. Add the missing fields before deciding whether the comparison is about function, geometry, measurement, or document review.
Write the missing fields as review questions.
Different optical terms can point to different review paths, even when they appear in the same system. Keep each option tied to its own function and field list so the technical response can compare the requirement instead of guessing from labels.
List each option with its own wavelength, blocking, and geometry fields.
Separate the comparison by passband or cutoff, blocking region, transmission or attenuation target, angle, substrate, size, source, detector, and surrounding channels. The field split makes the inquiry easier to review without adding broad performance language.
Prepare a two-column field list for the RFQ.
The comparison may point toward bandpass, longpass, shortpass, notch, neutral density, dichroic, or coated optic families. Choose the path by optical function and keep unresolved alternatives visible as review questions.
Open the relevant family pages or include both options in the RFQ.
Send the comparison as a structured request with the fields for each option, the application context, and the documents needed. Ask for review of the requirement rather than asking the page to resolve an engineering decision alone.
Submit the comparison fields through the technical RFQ path.
Use these fields to turn the page topic into a reviewable Lumalyx request.
Transmission usually describes how much wanted light passes through a range. Optical density usually describes attenuation or blocking of light in a range that should be limited.
A useful request can include both. For example, a filter may need a pass range with a transmission target and a blocked range with an OD target.
For neutral density work, send OD or attenuation target plus working wavelength range. For spectral filters, send pass-band transmission and blocked-band OD separately.
This page explains RFQ vocabulary. Measured results, final system behavior and instrument fit require complete optical-path review.
The safest next step is to describe the optical role and mark open values clearly.
These points move a comparison search into a reviewable optical package.
Lumalyx can review a request more efficiently when the comparison is paired with wavelength ranges, blocking or attenuation targets, AOI, substrate, size and use context.
Start RFQ packageOD describes attenuation or blocking, while transmission describes wanted pass behavior. Many optical requests need both fields separated by wavelength range.
| Field | Use when | Review note |
|---|---|---|
| Pass behavior | The request asks how much wanted light should pass through a range. | Send the wavelength range and target transmission when known, with source and detector context. |
| Blocking or attenuation | The request asks how much light should be limited in a range. | Send OD, attenuation target or blocked range as separate review fields. |
| Neutral density context | The request is about broad attenuation rather than a narrow spectral window. | Send OD or attenuation, working wavelength range, size, substrate, AOI and quantity stage. |
Do not infer final measured signal from vocabulary alone. The complete optical path and requested specification still require review.
Send pass-range transmission, blocked-range OD or attenuation, working range, size, substrate and stage in one request.
English should cover the global OD and transmission long tail first; localized variants need regional evidence around parameter terminology.
These answers keep the page focused on optical RFQ preparation.
Use transmission for wanted light in a pass range and OD for light that should be attenuated or blocked. Many RFQs include both.
Send OD or attenuation target, wavelength range, size, substrate, AOI, quantity and use context.
No. It explains vocabulary for RFQ preparation. Final review depends on the complete optical path and requested specification.
