Termlist

This list contains 1525 entries.
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Number Term Images
377

emergency lighting

378

emergency mode ballast lumen factor

379

emission (of radiation)

380

emission spectrum (of a luminescent material)

381

emissive material

382

emissivity (hemispherical) [ε, εh]

383

emitter

384

enamelled bulb

385

energy level

386

entrance angle (of a retroreflector) [β]

387

entrance portal (of a road tunnel)

388

environmental zones

389

EOCF (abbreviation)

390

equal energy spectrum (US)

391

equality-of-brightness photometer

392

equality-of-contrast photometer

393

equi-energy spectrum

394

equi-interval maintenance programme

395

equilux maintenance programme

396

equivalent contrast (of a task)

397

equivalent luminance (of a field of given size and shape, for a radiation of arbitrary relative spectral distribution) [Leq]

398

equivalent veiling luminance (for disability glare or veiling reflections)

399

erythema, actinic

400

erythema action spectrum [ser(λ)]

401

erythema spectral weighting function [ser(λ)]

402

erythemal dose [Her]

403

erythemal irradiance [Eer]

404

erythemal radiant exposure [Her]

405

erythemal radiation

406

escape lighting

407

excitation

408

excitation purity [pe]

408

excitation purity [pe]

408

excitation purity [pe]

409

excitation spectrum (for a monochromatic component of specified wavelength λ of the emitted radiation)

410

exit portal (of a road tunnel)

411

exit zone (of a road tunnel)

412

exit zone lighting

413

explosion-proof luminaire (US)

414

exposure distance

415

exposure duration [texp]

416

exposure limit [HL]

417

exposure meter

418

express road

419

extended gamut

420

external photoluminescence quantum yield

421

external quantum efficiency (of a detector) [ηe; η]

422

externally reflected component of daylight factor [De]

423

extraterrestrial solar illuminance [Ev]

424

extraterrestrial solar irradiance [Ee]

425

eyelet (US)

426

face luminaire

427

fall time (of a detector)

428

field colour

429

field of view (of a detector)

430

field of vision

431

filament

432

film rendering transform

433

film unrendering transform

434

filter

435

fire emergency guidance lighting

436

first axis (of a luminaire when measured in the C, γ coordinate system)

437

fixed message set (of a variable message sign)

438

flameproof luminaire

439

flash tube

440

flashing conspicuity beacon

441

flashing light

442

flashlight (US)

443

flicker

444

flicker index

445

flicker photometer

446

float

447

float light

448

floodlight

449

floodlighting

450

floodlighting installation

451

floor cavity index

452

floor cavity ratio (US)

453

floor lamp (US)

454

fluence (at a point, for a given exposure duration) [He,o; Ho]

455

fluence rate (at a point) [Ee,o; Eo]

456

fluorescence

457

fluorescent lamp

458

fluorescent material

459

fluorescent mercury discharge lamp

460

fluorescent sign

461

fluorescent tube

462

fluorophor

463

flux code (of a luminaire)

464

flux triplet (of a source)

465

footcandle (US)

466

footlambert (US)

467

footway

468

form factor (between two surfaces S1 and S2) [f12; f21]

469

forty-five degree annular (45°a) geometry

470

forty-five degree directional (45°x) geometry

471

fovea

472

fovea centralis

473

foveola

474

fractional cloud cover (US)