LED Expo New Delhi

Attendees, exhibitors & solutions

Who this event is for

Industry trends

Key trends shaping this market and its wider industry.

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Frequently asked

Glossary

1

LED (light emitting diode)

A semiconductor light source that emits light when current flows through it. At LED Expo the term covers the packaged component itself, from single emitters to multi-chip arrays, before it is built into a lamp or luminaire.

2

Luminaire

The complete finished lighting fitting: housing, optics, LED module, driver, thermal system and mounting hardware. Luminaire makers are the largest exhibitor group at a lighting trade fair, and buyers compare them on output, glare control and finish.

3

LED driver

The power supply that converts mains AC into the constant current an LED module needs. Driver quality drives flicker, dimming compatibility and lifetime, so drivers are usually shown as a separate product family alongside control gear.

4

Luminous efficacy (lm/W)

Lumens of light output per watt of power drawn. It is the headline efficiency number buyers use to compare modules, lamps and luminaires, and it is set against Indian BEE labelling thresholds for many lamp types.

5

CCT (correlated colour temperature)

Expressed in kelvin, this describes how warm or cool white light appears: roughly 2700K-3000K warm, 4000K neutral, 5700K-6500K cool daylight. Indian commercial projects often specify 4000K and 6500K, while hospitality work leans to 2700K-3000K.

6

CRI (colour rendering index)

A 0-100 score for how faithfully a light source shows colours against a reference. Retail, textile and museum buyers push for CRI 90 and above; TM-30 is the newer two-number alternative some suppliers now quote.

7

IP rating

Ingress protection code such as IP65 or IP67, covering dust and water resistance. It matters most for outdoor, facade, street and industrial fittings, and for Indian monsoon exposure it is one of the first specifications buyers check.

8

SMD and COB

Two packaging formats for LED chips. SMD (surface mount device) emitters dominate linear and panel lighting; COB (chip on board) arrays concentrate high output in a small area and are common in spotlights, track heads and downlights.

9

Thermal management and heat sink

The mechanical path that carries heat away from the LED junction. Poor thermal design shortens life and shifts colour, so heat sinks, extruded aluminium bodies and thermal interface materials appear as both components and finished-product features.

10

L70 lifetime and lumen maintenance

The hours of operation after which a product retains 70 percent of its initial light output. Suppliers quote L70 or L80 figures from LM-80 test data, and specifiers use them for warranty and maintenance planning.

11

Flicker, THD and power factor

Electrical quality metrics for drivers and lamps. Low flicker matters for video and retail environments, while power factor and total harmonic distortion are checked by utilities and by large commercial specifiers.

12

DALI and DALI-2

A digital addressable lighting control protocol used for dimming, scene setting and reporting. DALI-2 adds certification and testing of control devices, and it is usually demonstrated alongside sensors and gateways on the controls side of the hall.

13

Zhaga

An industry consortium defining interchangeable mechanical and electrical interfaces for LED modules, drivers and sensor connections. Zhaga compliance is a buying argument when a project needs replaceable, multi-vendor components.

14

SSL (solid state lighting)

The umbrella term for lighting built from LEDs and their control electronics, as opposed to incandescent, halogen or discharge sources. It appears in product literature and in standards language rather than on shop shelves.

15

BIS CRS registration and BEE star labelling

India's compliance stack for lighting. Self-ballasted LED lamps and several other products fall under BIS compulsory registration, while BEE star labelling applies to specified lamp and luminaire categories; both are routine questions for anyone importing into or manufacturing in India.

16

Smart lighting and IoT controls

Lighting linked to sensors, gateways and software for occupancy, daylight harvesting, scheduling and energy reporting. It shows up at the fair as fixtures with integrated drivers plus separate sensor and control ecosystems.

17

Secondary optics

Lenses, reflectors and diffusers that shape the beam after the LED emits. They set beam angle, glare (UGR) and light distribution, and are often exhibited as an independent component category by optics suppliers.

18

Architectural and stage lighting

The project-lighting side of the sector: facade and landscape wash, track and accent spotlights, DMX-controlled stage fixtures. Buyers here are lighting designers, system integrators and rental houses rather than retail distributors.