X

Trivia

Hard

The “Screen-Door Effect” Is a Problem Engineers Need to Overcome In What Product?

Digital Projectors
Video Game Consoles
Mirrorless Cameras
Telescopes

Answer: Digital Projectors

If you’ve ever sat very close to a projection screen during a digital slideshow at work or school, there is a good chance you’ve seen the “screen-door effect” up close and personal. In digital projection, the effect is a visual artifact created by the fine lines between the individual pixels in the panel inside the projector.

The reason we can see the little lines is because the optical components of the projector (the lens system) can project the display with a greater degree of image resolution than the actual digital panel inside can create. As such, it’s like holding a powerful magnifying glass up to a printed page and seeing imperfections in the offset printing process.

Some of the tricks engineers have employed to deal with this visual artifact include depixelization, which uses various optical methods (a microlens array, for example) to eliminate the visibility of the spaces between the pixels, and setting the lens very slightly out of focus so that the individual pixels bleed into each other just enough to erase the black lines in the process.

Trivia

Easy

Which Insects Are Used In Emergency Medicine?

Trivia

Very Hard

The Nintendo Character Kirby Is Named After A Real Life?

Trivia

Hard

A Man Was Freed From Jail After Outtakes From Which TV Show Provided Him With An Airtight Alibi?

Trivia

Very Hard

The First Video Game To Feature Point-And-Click Mechanics Was?

Trivia

Easy

The World’s Oldest Commissioned Naval Vessel Still Afloat Is The?

Trivia

Hard

Apollo 11 Astronauts Used Their Signatures As What?

Trivia

Hard

Which Of These Streaming Services Originally Cost A Dollar An Hour?

Trivia

Easy

Some Plants Use Chemical Signals To Call What To Their Defense?

Trivia

Hard

What Ubiquitous Insects Are Actually Crustaceans?

Trivia

Easy

Food Allergies Are An Inflammatory Reaction To What Compound In The Food?