LED strip light

06 May.,2024

 

LED strip light

Flexible strip of surface mounted light-emitting diodes

Check now LED strip light

Several LED spots being reflected as continuous lighting strip

TypeLED • strip light

First production 

Early 2000s

An LED strip, tape, or ribbon light is a flexible circuit board populated by surface-mount light-emitting diodes (SMD LEDs) and other components that usually comes with an adhesive backing. Traditionally, strip lights had been used solely in accent lighting, backlighting, task lighting, and decorative lighting applications, such as cove lighting.

LED strip lights originated in the early 2000s. Since then, increased luminous efficacy and higher-power SMDs have allowed them to be used in applications such as high brightness task lighting, fluorescent and halogen lighting fixture replacements, indirect lighting applications, ultraviolet inspection during manufacturing processes, set and costume design, and growing plants.

Design

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Correlated color temperatures of white light

Variables in strip lighting consist of water resistance, color, adhesives, choice of SMD, driving voltage, control type, and whether it is constant current or constant voltage layout.

Uncoated LED tape is not considered to have any resistance to water ingress, but may be rated with an ingress protection code as IP20 for some physical ingress resistance. Such tapes are generally low voltage and safe for skin to touch but can be shorted by fine metal objects. Water resistant strip lighting is covered in a heat conducting epoxy or silicone to protect the circuitry from direct contact with water, and can be rated IP65, IP67, or with suitable sealed connections IP68. Both coated and uncoated LED tapes have a two sided adhesive backing to stick to walls, desks, doors, etc.

The most common design differences are in how individual LEDs are controlled, specifically differences in color and whether or not each LED is addressable.[1]

  • Single color, non-addressable: Every LED on the strand is a single white colour, typically ranging from 2200K to 6500K in color temperature, or any of several monochrome colors covering the range of the visible spectrum (generally from 400-700 nanometers in wavelength).[2]
  • Dynamic tunable white (often described with CCT), non-addressable: Allows the user to adjust the color temperature output from a single strip light. They are manufactured with alternating LEDs of different color temperatures, so half of the LEDs are a lower temperature and half are a higher color temperature, allowing the strip to produce any specific color temperature between the two color temperatures of the LEDs.[3]
  • Multicolor, non-addressable: Each LED is capable of displaying red, green, blue, or all three (white), driven by three input power rails. All the LEDs display the same colour at any one time, but the colour can be manipulated by varying the voltage applied to each of the three power inputs.[

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  • RGB, addressable: Multiple colours and addresses. Each LED has its own chip meaning they can be individually triggered for chasing, strobing, and colour changing.[4]
  • RGBW, non-addressable: The combination of single color and multicolor (4 LED-chips) in a single module
  • RGBCCT or RGBWW: The combination of dynamic tunable white and multicolor (5 LED-chips) in a single module
Blue LED strip light

LED strip designs are available populated with many different types of SMD, not only in different colors and addressable or non-addressable, by different shapes, sizes, and power levels. The most common types of SMD are: 3528, single colour, non-addressable, very low power; 5050, containing three LEDs allowing for RGB and addressable strips as well as higher power levels; 2835, a newer single-color SMD having the same surface dimensions as the 3528 but a larger emitter area and a thinner design with an integrated heatsink allowing for higher power levels; 5630/5730, a newer replacement for single-color 5050 SMDs which can operate at slightly higher power levels and have high efficacy. Less common designs may have 3014, 4014, 7020, 8020, or other SMDs. In addition to the LED SMD type, the quantity of LEDs per meter is also an important factor in determining the overall power and brightness.[5]

LED strip lights most commonly operate on 12 or 24 volts of direct current from a power supply, sometimes referred to as a driver. USB strip lights operate on the standard 5-volt direct current used by USB devices. Mains voltage LED strips are also available. These have the advantages of being usable in much longer single runs without a brightness drop along the length, but are less flexible and heavier due to higher voltage and current ratings and thick coatings for shock safety and high IP ratings in their intended outdoor positions, with limited cut points. No separate power supply is needed, although there must be a rectifier between the mains supply and the end of the LED strip. The most common PCB designs use multiple parallel circuits consisting of passive dropper resistors in series with a certain number of LED SMDs, to operate at a certain current and power level with the expected input voltage. This design is referred to as constant-voltage and is rather sensitive to small variations in input voltage and to the voltage drop that occurs along long lengths of strip when driven from a single power input. Alternative design is the "constant current" design where each parallel circuit of several SMDs includes a small integrated circuit to provide a fixed current to that group of LEDs, within a wide range of applied voltages. This allows the strip to operate at the same power level and brightness along its entire length, or with some variation in the driver voltage.[citation needed]

Any customizations require an LED controller to adjust brightness, color, or individual LED activity. This can be done with an included controller or customized with a microcontroller.[1]

LED strips can also be used to resemble the appearance of traditional neon lights. The LED tape is embedded on the side of a silicone filled, plastic C-channel; the silicone both diffuses the light from the LED tape and directs it out to one side, 90 degrees to the direction the SMD LEDs face. This design allows the lights to be bent in what appears to be the opposite direction to how regular LED tape can be bent, allowing one to spell words and create pictures with it much like neon signs.[6]

Beam angle

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Some LEDs are rated as having a 120° beam angle,[7] directed "up", i.e. perpendicular to the mounting surface. 'Side view' or 'edge emitter' SMDs are designed such that light is emitted parallel to the adhering surface (i.e., 90 degree difference to typical tape design). These allow the construction of LED strips which wash surfaces within less space or accent edge profiles such as signage.[citation needed]

Dimming

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LEDs can be dimmed efficiently using pulse-width modulation (PWM). This strategy rapidly switches the LEDs on and off, typically 500 times per second, by changing the voltage from zero to the designed value in an "on-off" fashion. The LED sees its drive as a square wave. The relative width of the on and off portions of the square wave can be varied so that the LEDs are on or off for relatively more or less time to change brightness.[8] Addressable LEDs do this dimming internally given a data signal which specifies which colour LEDs to turn on, while non-addressable LEDs require an external PWM controller.

Applications

For more information, please visit BLUE DIAMOND.

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Video of a bias lighting system with an LED strip light mounted all around the edges at the rear side of a flat screen television set, for extending the picture on the screen to the surrounding walls

Strip lights are designed for both indoor and outdoor use depending on whether they are water resistant. Since the strip is flexible and can be divided at any point between LEDs, it is extremely versatile and can be used in a number of installations. Outside of traditional lighting, strip lighting is extensively used in DIY projects or lighted clothing. The ability to power strip lights off of a USB device or battery pack makes them extremely portable. Examples include computer lighting, costume lights, toys, workspace lighting, monitor and display ambient lighting, and alcove lighting.

Popularity

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During the early 2020s, LED strip lights gained popularity among users on the social media platform TikTok.[9][10]

References

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What is an LED Strip Light

    Chip sizes are measured in mm and describe the length and width of the chip size. For example a 3014 led chip measures 3.0mm long x 1.4mm wide.

    Chip density refers to the amount of LED chips on the strip. A higher chip density creates less hot spots or dots when shined against a wall or plastic diffuser.

    One of the advantages of using LED strips is the ability to cut to a customized lighting length and re-connect. Strip light cut lines vary per type of strip.

    Lumen output determines how bright the strip light is. The higher the lumens the brighter the strip. We have strip lights ranging from 70 - 1,317 lumens per foot. A standard 60 watt incandescent bulb is roughly 800 lumens.

    Each one of our industry trusted strip lights has real 3M tape applied. Our non-waterproof strips use the high bond 3M 300LSE double sided tape while our waterproof strips use very high bond 3M VHB 5952. Our tape does not fall off.

    Our waterproof strips are encased in a heavy duty IP67 silicon housing, unlike most vendors who only sell the silicon sleeved strips (IP65), our strips are encapsulated and bonded with a thicker and more durable silicon mold.

    Along with our single color White, Daylight, Warm, Red, Green, Blue and Amber strips. We also provide a large selection of RGB and RGB+W color changing tape lights, these strips require an LED Controller to operate.

  1. Choose Strip Type

    Based on the area being illuminated choose the color, brightness, and linear footage of the LED strip light you want for your project. Be aware that some of the higher output strips require a heat sink when mounting.

  2. Determine Power Input

    Once you have chosen your strip, multiply the watts per foot by the linear footage of your project. This will give you your max power load and the size of power source that you will need.

  3. Test Strip Light

    Before permanently mounting the strip light we recommend you unroll it from its reel and test it. You can use masking tape to tack it into place. Be sure that it is the strip you want before permanent installation.

  4. Wire Strip Light

    Depending on the size of your project wiring can be very simple or a bit more complicated. Soldering is the best option for long term projects but we also have a large variety of quick connectors and jumper cables.

  5. Mounting Accessories

    If you want a more professional and finished install we offer a huge selection and are a trusted vendor of KLUS aluminum strip light channels. With special mounting options these extrusions really add to the look of your lighting project.

  6. Peel and Mount

    Once you have decided that the strip is suffice for your plan. You can then, cut, re-wire, peel, stick and mount the LED strip lights to any clean and dry surface. There are so many indoor and outdoor lighting possibilities using our low voltage LED strips.

  7. Add a Dimmer or Controller

    Our single color LEDs can be dimmed using our PWM dimmers or Dimmable Power Supplies. When using our RGB or RGBW strip lights one of our color controllers is necessary for dimming and color changing functions.

    Contact us to discuss your requirements of Narrow LED Strip. Our experienced sales team can help you identify the options that best suit your needs.