light box

American  

noun

1. a boxlike object having a uniformly lighted surface, as of ground glass, against which films or transparencies can be held for examination.

---

light box British  

noun

1. a light source contained in a box and covered with a diffuser, used for viewing photographic transparencies, negatives, etc

---

Etymology

Origin of light box

First recorded in 1840–50

Example Sentences

“The safeties were wide enough, and the linebackers were out. It was a light box,” said quarterback coach Chandler Whitmer.

From The Wall Street Journal

If it’s too dark when you get up, especially in the winter, use a light box or an alarm clock like the Hatch Restore 3, which slowly lights up to ease you out of slumber.

From The Wall Street Journal

This light box learning tool uses contrasts to help encourage young kids with impaired vision develop awareness of objects, light and color.

From Los Angeles Times

I think my favorite bit of production design in the whole movie is in the apartment, the oversized light box on the wall of what looks like a suit containing no man.

From Salon

“Today, you saw kind of the full complex of the offense, a lot of good RPOs off of that,” Dickert said, “getting the light box we wanted and getting downhill. So once again, I don’t get too high or too low in practice — in any time in spring. But we need to get the work that we need to do to make sure we’re getting better. And the run game has been a huge emphasis. It continually gets better, and I think you saw that today.”

From Seattle Times