Blackout Duvetyne Light Leak Layer Checker
Estimate actual blackout-layer optical leakage under independent-transmission model using caller incident light/policy; seams, scattering, apertures and wavelength dependence unmodeled, not fabric fire certification.
Description
Independent optical layer transmissions multiply in a simple stack model.
Independent optical layer transmissions multiply in a simple stack model. Real seams and scattering can dominate leakage.1
Enter nonempty fractions 0–1 and nonnegative incident/maximum lux. Return transmission, leakage and strict-above-budget flag.
When to use Blackout Duvetyne Light Leak Layer Checker
Use Blackout Duvetyne Light Leak Layer Checker when you need to evaluate the supplied records under the calculation and evidence rules below. No seam, aperture, spectral effect or fabric fire certification is modeled.
Prepare the actual venue, production, inventory or financial records requested. Confirm units and supply applicable local limits or verified catalog values.
How to use Blackout Duvetyne Light Leak Layer Checker 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 measuredIndependentLayerTransmissionFractions, incidentLux, callerMaximumLeakedLux using the field table and calculation rules, then run the tool.
- Read modeledLayerStackTransmissionFraction, modeledLeakedLux, exceedsCallerBlackoutLightBudget. 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 |
|---|---|---|---|
| measuredIndependentLayerTransmissionFractions | Measured independent layer transmission fractions | list of number | Required |
| incidentLux | Incident lux | number | Required |
| callerMaximumLeakedLux | Caller maximum leaked lux | number | Required |
Enter nonempty fractions 0–1 and nonnegative incident/maximum lux. Return transmission, leakage and strict-above-budget flag.
transmission=product(layerFractions); leakedLux=incident×transmission Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| modeledLayerStackTransmissionFraction | Modeled layer stack transmission fraction | number |
| modeledLeakedLux | Modeled leaked lux | number |
| exceedsCallerBlackoutLightBudget | Exceeds caller blackout light budget | boolean |
{
"input": {
"measuredIndependentLayerTransmissionFractions": [
0.1,
0.2
],
"incidentLux": 1000,
"callerMaximumLeakedLux": 10
},
"output": {
"modeledLayerStackTransmissionFraction": 0.020000000000000004,
"modeledLeakedLux": 20.000000000000004,
"exceedsCallerBlackoutLightBudget": true
}
}Limitations and assumptions
No seam, aperture, spectral effect or fabric fire certification is modeled.
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. 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 Scrim Front versus Rear Reveal Ratio Lookup: Scrim reveal depends partly on front and rear illumination. A measured ratio is a lighting-plan check, not a transparency guarantee. For a complementary task, use Blacklight Reactive Pigment Mix Ratio Calculator: An approved pigment/binder batch can be scaled while tracking pigment inventory. Mass ratio does not establish fluorescence or material compatibility.
References
Similar or alternative tools
- Scrim Front versus Rear Reveal Ratio Lookup
Scrim reveal depends partly on front and rear illumination. A measured ratio is a lighting-plan check, not a transparency guarantee.
- Blacklight Reactive Pigment Mix Ratio Calculator
An approved pigment/binder batch can be scaled while tracking pigment inventory. Mass ratio does not establish fluorescence or material compatibility.