Magnifier plus paper box DIY mobile projector comparable to home theater

Logistics packaging is something people often use. But in recent days, students have played their own ideas, using paper boxes and magnifying glass to start the projector.

In the era of mobile Internet, holding mobile phones can watch large movies at any time. However, small screens are really unpleasant. Recently, a god skill has been circulated on Sina Weibo. Using a paper box, a magnifying glass, and a paper clip, you can make a simple projector and configure a cheap home theater. This method seems to be magical, and netizens have also called "tall" and threatened to try.

However, what exactly was the effect of a simple projector? Yesterday, the reporter took a few experiments and spent a lot of effort. At the end, it was barely successful. However, for a DIY family, doing such an experiment is more meaningful than the result.

Experiment 1

A paper box with a magnifying glass

Poor projection imaging of mobile phones

The purpose of the experiment: According to the method of network transmission, using the experimental tool for projector production, see the final results.

Experimental tools: 1 tray, 1 magnifier, 6 paper clips, 1 knife, 1 tape

Experimental staff: reporters, netizens “Fire Blue Blade”

The introduction of the Raiders on Weibo shows that the production of a projector requires only a box, a smaller magnifying glass, a knife, and a tape. Yesterday, the reporter prepared a box, a knife and other tools, and bought a 70mm high magnification magnifier, invited users to "fire blue blade" to assist the experiment.

First, the reporter used the box as a place to install the "lens." After finding the center part, “Fire Blue Blade” removes the handle of the magnifying glass, puts a circle out of the center, and then uses a knife to draw a hole to hold the magnifying glass.

After the magnifier was stuck in the hole, the "Fire Blue Blade" began to fix it with tape and ensured that the gap was sealed and no light leaked.

The "lens" is done, and the "Blue Blade" prepares to use a paper clip to make a stand for the phone, which is used to fix and move the phone in the projector. However, there are no detailed steps on Weibo. “Fire Blue Blade” has wasted five clips, and it is unable to make any useable brackets. It has cost a lot of effort. The 6th clip finally made a reluctant decision. Stand, but it is also particularly easy to "fall."

The projector is basically ready and everything is ready. The reporters and the "Blue Blade" hold an excited attitude and turn the screen of the mobile phone to the brightest for better imaging. After turning the screen upside down, place the phone in the middle of the box and close the box in dim light. Under the circumstances, the "lens" was aimed at the white wall, and at the moment, only a circle of white light appeared on the front wall.

“How did you not image?” On the suggestion of “Fire Blue Blade”, the reporter moved the position of the phone several times before and after, but the final imaging effect was ambiguous.

Experimental results: No matter how the distance between the mobile phone and the magnifier, the imaging effect on the wall is always blurred.

Experiment 2

Three magnifiers superimposed

The effect of this projection is clearer

Objective of the experiment: Use a low-magnifying magnifying glass and two high-magnifying magnifying glasses to make an "upgraded version" of a simple projector and observe the final imaging results.

Experimental tools: 2 trays, 3 magnifiers, supports, 1 knife, 1 black tape

Experimental staff: reporters, netizens "Goddess"

After the failure of the experiment, the reporter searched for relevant posts on the Internet to make simple projectors. After integrating some methods on some posts and forums, the reporter recruited “Goddess” and once again bought two magnifying glasses, one 60mm. A high power, a 50mm low power, and a larger box is prepared.

The reporter used the "projector" of Experiment 1 again, and in the same way, he opened a hole opposite the mounted "lens" and fixed the 60mm high-powered lens. Then, the reporter used a piece of paperboard to mount the 50mm low magnification lens in the center and put it in the center of the box, forming a line with the two lenses.

After the projector is done, the reporter puts it in a larger box and opens a mouth in front of the box so that it can just pass through the box so that the focus can be adjusted during the screening.

Finally, in order to save time and effort, the reporter used a book and a box to serve as a mobile phone holder and found it easier to use than a paper clip.

Similarly, the brightness of the mobile phone is adjusted to the highest, and it is placed in a large box, in front of a 60mm magnifier. The reporter found that a clearer image appears on the wall, and the distance between the mobile phone and the magnifier in the small box is constantly adjusted. The sharpness is also changing, but even if it is adjusted to the best effect, the final sharpness is quite different from that in the mobile phone.

In addition, even if the reporter turned the screen upside down, the subtitles were still reversed and the projections were not enlarged. The expectations for "home theater" are too far apart. “Goddess,” who experimented with journalists, said: “I was very excited when I was experimenting. I was excited when I saw the image. But if I wanted to watch a movie in this way, I really thought it would be too much.”

Experimental results: The production process is complex, and it requires repeated debugging during imaging. The final results are relatively clear, but the subtitles are always reversed.

I believe that in the future, there will be more fantastic ideas.

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