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Buy Projector in Nepal

Projectors are optical devices that create images by shining light through a lens or, in modern variations, by using lasers to project directly onto a surface. The surface used for projecting images is typically called a projector screen. Projectors are versatile tools known for their ability to display images on various surfaces.

How a Projector Works: Principles and Mechanisms Explained

Projectors are ingenious devices that project images or videos onto a surface using a bright light source and optics. In this article, we’ll delve into the principles and mechanisms behind how projectors operate.


  1. Light Source: Most projectors rely on a bright lamp as their light source. However, some newer projectors use lasers for projection.
  2. Retinal Projectors: A unique type of projector, known as a digital retinal projector, directly projects images onto the retina, eliminating the need for an external projection screen.

Mechanisms: Now, let’s explore the inner workings of a typical projector that you buy in Nepal

  1. Lamp: The projector contains a lamp that emits a luminous flux, providing the necessary illumination.
  2. Color Separation: The incoming light is divided into three primary colors: red, blue, and green as it passes through the optical system.
  3. Modulator: Inside the projector, a modulator arranges these colors into a pixel structure.
  4. Control Unit: Signals from the image source are received and processed by a control unit. This unit adjusts the modulating matrix’s orientation.
  5. Projection: Following the principles of focusing, the projector’s lens collects the streams of different colors and combines them to form a coherent image on the screen.

Understanding these principles and mechanisms helps shed light on the fascinating world of projectors and how they bring images and videos to life on various surfaces.

Some of the Popular Types of Projectors:

Based on their applications, Projectors are normally classified into many types. Some of the well known types include: DLP, LCD, LED, LCOS For Home & Office.

Frequently Asked Questions

How to connect a Speaker to a Projector

HDMI OUT port and at least 1 HDMI IN port make connecting to a projector a breeze. Just connect a high-quality HDMI cable from the Sound Bar’s HDMI OUT port to your projector’s HDMI input. Then, plug your desired player, whether it’s a DVD player, computer, or a Smart player like Apple TV, Chromecast, or GoogleTV, into the Sound Bar’s HDMI IN port. If your Sound Bar has multiple HDMI IN ports, you can connect all your devices simultaneously and use the Sound Bar’s ‘Source’ buttons to easily switch between them. Also check For Audio 3.5mm port

What projector is best for games?

For gaming, high-quality projectors from major brands are generally suitable. If you enjoy fast-paced gaming, look for a projector with a Gaming Mode. Currently, Optoma and BenQ offer excellent 4K gaming projectors, and Optoma also has a selection of quality FULL HD gaming projectors worth considering.

How to clean my projector lens?

  1. Ensure the projector is powered off and has cooled down.
  2. Use a lint-free microfiber cloth (similar to what you’d use for cleaning eyeglasses).
  3. Lightly moisten the cloth.
  4. Gently wipe the lens to remove visible dust or smudges. Start from the center and move outwards in a circular fashion.
  5. If a smudge is stubborn, try moistening the cloth a bit more.
  6. If needed, you can apply a small amount of lens cleaner to the cloth, but do not spray it directly onto the lens.
  7. If your projector has a shutter, gently close it once the lens is clean.

(When you buy projector in Nepal, brands like Aun gives free servicing for 2 times)

Important Notes

  1. Never attempt to clean the lens while the projector is on or still warm.
  2. Do not use glass cleaners, detergents, or harsh materials on the lens.
  3. Avoid using canned air, as it may leave a residue.
  4. Try to avoid touching the lens with your bare hands to prevent leaving fingerprints.

What is Throw?

Throw is the distance from the projector to the screen. Projectors have a Throw Ratio that helps calculate this distance for a desired image size. If the projector has zoom capabilities, there are two ratios – one zoomed in and one zoomed out. To calculate, multiply the Throw Ratio by the desired image width. For example, with a projector advertised as “1.3 – 1.56:1” and a 2-meter-wide image:

  1. Zoomed in: 1.3 x 2m = 2.6m
  2. Zoomed out: 1.56 x 2m = 3.12m

So, for a 2m wide picture, place the projector between 2.6m and 3.12m back. To find the image width for a specific distance, divide the distance by the Throw Ratio. For instance, at 3 meters back:

  1. Zoomed in: 3m / 1.3 = 2.3m
  2. Zoomed out: 3m / 1.56 = 1.92m

Throw ratio is always based on image width, not diagonal or height.

How do I display my windows laptop on my projector?

  1. Connect the HDMI or VGA cable to both the projector and your laptop/tablet.
  2. Turn on the projector.

Windows should recognize the connected projector automatically.

If the projector doesn’t display an image, try this:

  1. Press and hold the Fn key (usually near the bottom left of your keyboard).
  2. Tap the Display Toggle key (typically an F key with a computer monitor or square icon).
  3. The specific Display Toggle key varies by brand (e.g., F5, F2). Press it repeatedly to cycle through display modes:
    • CLONE (mirrors your laptop screen on the projector).
    • PROJECTOR/MONITOR ONLY (displays only on the projector, turning off the laptop screen).
    • EXTENDED (the projector acts as a second monitor, allowing you to drag items off your laptop screen to the projector).

To save money on your home theater setup

  1. Plan carefully and consider DIY options.
  2. Installing the projector yourself can save on installation costs, but consider the risks and limitations.
  3. Using a wall instead of a screen is an option but may have drawbacks.
  4. Ceiling installation may be more cost-effective if you plan well.
  5. Electrical work should always be done by a licensed electrician.
  6. Calculate throw distance and screen size.
  7. Get a quote from an electrician for power and possible additional installation services.


In summary, projectors utilize light and optics to project images and videos onto surfaces. They can use lamps or lasers as light sources and employ color separation and control units to create sharp images. The advent of digital retinal projectors represents a leap in technology. Understanding these mechanisms enhances our appreciation of these versatile devices. If You have any further questions please let us know through WhatsApp or Viber if you are looking to buy projector in Nepal, our team will assist