Products

LCD Lighting produces standard and custom hot-cathode fluorescent lamps (HCFL) solutions for many OEM applications, including scanners, machine vision systems, and medical imaging devices. Our sub-minis are the premier choice for backlighting, entertainment displays, and liquid crystal displays (LCDs) in numerous commercial, civil, military, and space avionics information systems.


HCFL - Hot Cathode Fluorescent Lamps
Our miniature to standard lamps have highly reflective internal reflectors and/ or apertures for special task lighting and come in straight, U, circular, or custom shapes to meet a variety of applications.   

HCFL - Technical and Performance Specifications:

• Outside Diameter Range: T2 (3.2mm) , T4 (12.7mm), T5 (15.9mm), T6 (19.0mm), T8 (25.4mm) and T12 (38.1mm)
• Length: 75mm - 3,048mm
• Range: HCFL and cold-cathode fluorescent lamps (CCFL) in diameters from 6mm up to 25mm, in lengths to 120 inches that can incorporate special environmental, electrical, or dimming applications.

Our compact fluorescent lamps for T4 and T5 specialty applications provide high light output (lm/watt) with up to 75% energy savings versus incandescent lamps of comparable light output. Their extra long life - up to thirteen times longer than standard incandescent lamps – helps reduce maintenance costs.  We offer standard or highly customized design systems. Clients can choose wattage, shape, size, and standard or special arc lengths.  


Sub-Miniature Lamps
Fluorescent lamp-ends consume power, generate heat, and cause shadows. They require lampholders and must be concealed. One of our U-lamps can replace two straight lamps, eliminating two lamp-ends while providing the same amount of light with less wattage. Additional benefits include less wiring, fewer dark ends, and fewer lamp connectors that need to be hidden. These benefits increase proportionately with multiple-bend lamps.

Sub-Miniature Lamps - Technical and Performance Specifications:

• Outside Diameter Range:  2.0mm, 2.4mm, 2.6mm, 3.0mm, 3.8mm, 4.8mm, 6.5mm, 8.0mm, 9.0mm and 10.0mm
• Length: 50mm - 500mm

Cold-Cathode Fluorescent (CCFL) vs Hot-Cathode Fluorescent (HCFL)
Cold-cathode lamps use a cylindrical metal shell (electrode) coated on the inside with emission coating.  A cold-cathode is distinguished from a hot-cathode in that unlike hot-cathode lamps that are heated to induce thermionic emission of electrons, cold-cathode lamps are not.  The interior surface of cold-cathodes are capable of producing secondary electrons upon electron and ion impact. For acceleration of the ions to reach a sufficient velocity for creating free electrons from the cathode material, cold-cathode discharge lamps need higher voltages (and therefore lower current) than hot-cathode lamps.

Hot-cathode lamps use a tungsten filament typically covered with an emissive layer, made of a material with lower work function, which emits electrons more easily than bare tungsten metal, reducing the necessary temperature and lowering the emission of metal ions and heated to orange-hot.  The filament may be either directly heated, where the filament itself is the source of electrons, or indirectly heated, where the filament is electrically insulated from the cathode. Hot-cathodes typically achieve much higher power density than cold-cathodes, emitting significantly more electrons from the same surface area resulting in higher output and can operate at higher lamp currents.