The question, “What is a projector?” has a few different answers. It can be easily summed into a few words or expanded into more technical terms. There is limitless technology, from the colossal picture size in movie theaters to tiny presentations given with a simple slide projector. Leonhard Euler first created the opaque projector in 1756. From there, projector size, use, and technology have continuously evolved into what we know as the best projectors on the market today.


  • The picture quality a projector can display depends on a few factors, including the type of projector in use and the amount of ambient light.
  • Projector technology is vast and encompasses a few areas, with most projectors using liquid crystal display or micromirrors to work.
  • There are multiple different types of projectors, including overhead projectors, film projectors, lamp projectors, and more.

Everything to Know about Modern Projectors

Modern projectors have come a long way from the opaque projectors originally in use. From entertainment projectors to LED projectors to lamp projectors, there are multiple common types. Some projectors you can make yourself. Learning how to make an overhead projector can save you quite a bit of money on traditional projectors.

Insider Tip

Ambient light can come in different forms, so make sure you turn off all lamps, pull curtains, and even put a towel underneath any doors, so light doesn’t leak through the gap.

A Few Examples of Projectors

While creating overhead projectors is great, there are a few other common types to understand. You’ll probably need an external projection screen of some kind. Learning how to make a curved projector screen is the easiest way to Here are a few different kinds of projectors:

  • Digital projectors
  • Film projectors
  • Entertainment projectors
  • Laser projectors
  • Smart projectors

Understanding Projector Type Technology

A projector is an optical device that allows you to project an image onto a larger screen size using a light source. These larger images are great for creating murals using cheap or homemade models. There are a few different technologies used for projectors, with digital light processing showing up frequently:

  • Digital light processing (DLP projector)
  • Liquid crystal display (LCD projector)
  • High-definition video (HD projector)

Why the Opaque Projector Matters

Traditional projectors date back to the 18th century. These projection units didn’t have a crisp image, and they couldn’t yet project a digital image. Projection surfaces had to be close by and were limited to plain, white walls. This is a far cry from the advanced technology in use today.

New Advances in the Projector Realm

Now we’re able to produce color images, and projector position doesn’t matter as much. There are hybrid projectors, rear projection, and more to choose from. You can use projection in TVs to play portable video games or rear projection for big presentations. Unlike older, traditional projectors, new models can even use your mobile devices as an output device. The possibilities are endless.


For educational purposes, make sure you choose a projector with a relatively high native resolution to avoid straining your students’ eyes.


What is a projector’s throw ratio?

There is a simple equation used to find your projector’s throw ratio. First, find your throw distance and then measure the width of your projection screen. If you have limited room, try a short-throw projector.

What is projector resolution?

Also known as native resolution, this number will reveal how clear the bright image you project is. The native resolution refers to how many pixels can be projected on screen surfaces.

What are lumen levels, and why are they important?

A high-lumen projector will produce a brighter image even when faced with ambient light. While they still won’t work in direct, bright sunlight, they are a brighter projector than the average model.

What are the advantages of projectors?

Using projectors has a variety of benefits:

  • Easier time giving business presentations
  • Ability to enlarge high-quality images for viewing

STAT: The earliest projection of images was most likely done in primitive shadowgraphy dating back to prehistory. (source)

Christen Costa

Grew up back East, got sick of the cold and headed West. Since I was small I have been pushing buttons - both electronic and human. With an insatiable need for tech I thought "why not start a blog focusing on technology, and use my dislikes and likes to post on gadgets."

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