Gobo Pattern Size A Size B Lookup

Audit measured gobo size/image aperture against exact caller holder catalogue; no universal A/B diameters, thickness/thermal fit, fixture compatibility or safe operation guarantee.

Description

Gobo fit requires a holder-specific outer diameter and image aperture.

Gobo fit requires a holder-specific outer diameter and image aperture. Trade-size labels alone are insufficient.^[1]

Enter aligned nonempty distinct nonblank holder IDs/positive specifications, exact query, positive observed outer/nonnegative image and tolerance. Selected image maximum must not exceed outer; return specifications and two inclusive flags.

When to use Gobo Pattern Size A Size B Lookup

Use Gobo Pattern Size A Size B Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No catalog is fetched or thickness, thermal fit and safe fixture operation verified.

Prepare the actual venue, production, inventory or financial records requested. Confirm units and supply applicable local limits or verified catalog values.

How to use Gobo Pattern Size A Size B Lookup and understand its results

Prepare the actual venue, production, inventory or financial records requested. Confirm units and supply applicable local limits or verified catalog values.
Enter callerHolderIds, callerOuterDiametersMm, callerMaximumImageDiametersMm, requestedHolderId, observedGoboOuterDiameterMm, observedImageDiameterMm, callerFitToleranceMm using the field table and calculation rules, then run the tool.
Read callerVerifiedOuterDiameterMm, callerVerifiedImageMaximumMm, outerDiameterWithinCallerFitTolerance, imageWithinCallerAperture. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
callerHolderIds	Caller holder ids	list of string	Required
callerOuterDiametersMm	Caller outer diameters mm	list of number	Required
callerMaximumImageDiametersMm	Caller maximum image diameters mm	list of number	Required
requestedHolderId	Requested holder id	string	Required
observedGoboOuterDiameterMm	Observed gobo outer diameter mm	number	Required
observedImageDiameterMm	Observed image diameter mm	number	Required
callerFitToleranceMm	Caller fit tolerance mm	number	Required

outerPass=abs(observedOuter−catalogOuter)≤tolerance; imagePass=observedImage≤maximum

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
callerVerifiedOuterDiameterMm	Caller verified outer diameter mm	number
callerVerifiedImageMaximumMm	Caller verified image maximum mm	number
outerDiameterWithinCallerFitTolerance	Outer diameter within caller fit tolerance	boolean
imageWithinCallerAperture	Image within caller aperture	boolean

json

{
  "input": {
    "callerHolderIds": [
      "A",
      "B"
    ],
    "callerOuterDiametersMm": [
      100,
      86
    ],
    "callerMaximumImageDiametersMm": [
      75,
      64
    ],
    "requestedHolderId": "B",
    "observedGoboOuterDiameterMm": 86,
    "observedImageDiameterMm": 60,
    "callerFitToleranceMm": 0.1
  },
  "output": {
    "callerVerifiedOuterDiameterMm": 86,
    "callerVerifiedImageMaximumMm": 64,
    "outerDiameterWithinCallerFitTolerance": true,
    "imageWithinCallerAperture": true
  }
}

Limitations and assumptions

No catalog is fetched or thickness, thermal fit and safe fixture operation verified.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Extremely large text inputs are rejected. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.

Alternative or Complementary methods

Use Iris Diaphragm Aperture Range Lookup: A measured iris-to-beam calibration can be inverted within the observed range. Throw conditions must match the calibration. For a complementary task, use Gel Lee vs Rosco Equivalent Crossref Lookup: Gel alternatives can be screened using measured color distance under the same reference illumination. Similarity is not spectral equivalence.

References

Gobo Pattern Size A Size B Lookup — tool.io

Similar or alternative tools

Iris Diaphragm Aperture Range Lookup
A measured iris-to-beam calibration can be inverted within the observed range. Throw conditions must match the calibration.
Gel Lee vs Rosco Equivalent Crossref Lookup
Gel alternatives can be screened using measured color distance under the same reference illumination. Similarity is not spectral equivalence.