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Tag: prism

Prism glasses will improve your posture! Never hunch over your laptop like some kind of Quasimodo again!

Background:

Since laptops are so convenient and portable, many people work in locations that are not set up for long-term ergonomic comfort (for example, dining room tables or coffeeshop counters, e.g. Figure 1).

1-laptop-situation

Fig. 1: A setup like this is a common work environment, despite its presumably questionable OSHA rating.

The issue:

Since these locations were never designed for laptop use, they are typically set up in such a way that the laptop keyboard and screen are way too low, and you often see people hunching over their laptops in ridiculous fashion (Figure 2).

 

2-laptop-bad-ergonomics

Fig. 2: This highly dubious pose is the common reality of laptop use in non-optimal situations, and is, additionally, an affront to the human form. People tend to blame themselves for having “bad posture,” but really it’s an inescapable element of such a work environment.

Ideally, people imagine that they would sit up straight, as shown in Figure 3. But that is incompatible with the position of the computer screen.

3-ideal-sitting-position

Fig. 3: This “ideal posture” scenario is totally unrealistic given the position of the laptop. The user will inevitably return to the situation shown in Figure 2.

Proposal:

Luckily, the fix is simple: a modified version of belay glasses, a type of prism glasses used in rock climbing that were allow wearers to look up without craning their necks.

Except in this case, the prism glasses will look down at the laptop screen, rather than up, as illustrated in Figure 4.

 

 

4-good-ergonomics

Fig. 4: These “prism glasses” (in this case, actually a giant prism attached to a hat) are  suspended in such a way that the user is able to look directly at the prism, yet see the laptop screen below. The prism would presumably not actually be purple, although technically that would be an option.

Conclusion:

Since prism-based belaying glasses already exist (surprisingly, only commercially available after 2007!), laptop prism glasses are probably not totally infeasible.

It would also be possible to use a VR headset to set up something like this, but at that point you might as well just set up a proper work space.

PROS: Improve your posture!

CONS: The “sweet spot” for seeing the screen is probably extremely narrow, so any movement of the wearer’s head may move the laptop screen out of the user’s view. Additionally, even the slightest imperfections in the prism would probably make text very difficult to read.

Become a prey animal by putting eyes on the side of your head. Makes you a safer driver, but also encourages packs of howling wolves to attack you, so beware!

Background:

Human vision is limited to a ~180° horizontal angle (Figure 1) and an even smaller vertical angle.

This means you can easily be blindsided by objects coming from behind you. In ancient times, this was less of a worry, but with electric cars, electric scooters, and bicycles, there are a huge number of fast-moving and potentially-lethal objects that humans must be aware of.

 

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Fig. 1: Normal human vision only uses less than half of the total potentially-available visual information. Many prey animals have nearly 360º vision, so clearly this limitation is not an inherent limitation of biology.

Proposal:

Since cars are now the “apex predator” that is ranked above humans in the food chain, humans should adapt and become prey animals. This requires a visual adaptation to allow for 360º vision, which can be accomplished as shown in Figure 2.

 

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Fig. 2: These “earmuff cameras” feed into the glasses in front, which provide a highly-warped fisheye view of the wearer’s environment. Although binocular vision may be impaired, the benefits of total visual awareness cannot be overstated.

Conclusion:

The example in figure 2 requires complicated electronics, but there’s probably a way to create an optical 360º-vision system that uses no electronics.

A similar product already exists: rear view mirror spy glasses—inexpensive sunglasses with mirrored “wings” that allow you to see behind you.

PROS: May reduce the number of deaths and injuries from accidents caused by a lack of visual situational awareness.

CONS: Can the human visual cortex handle this type of input data? Only one way to find out—experiment on some undergraduates.

Solve your conference call woes with this one insane tip! Never lean your head weirdly in front of a laptop camera again. FINALLY.

The issue:

During a conference call, it can be difficult to position multiple people in such a way that everyone is actually in-frame.

Usually, either:

  1. Only one person fits into the frame, or:
  2. Everyone is extremely far from the camera, so 95% of the screen area is taken up by a conference table.

Figure 1 illustrates this common scenario.

conference-call-1-without-prism.png

Fig. 1: When multiple people are sharing a laptop during a conference call, usually the video looks like the example on right, where only one person is actually fully visible.

Proposal:

An inexpensive prism can fix this problem once and for all (Figure 2). A prism can be placed directly in front of the camera to split the image into multiple horizontally-spaced parts.

Now everyone can participate in the conference call without needing to move the camera around!

conference-call-2-with-prism

Fig. 2: The prism attachment makes it easy to fit everyone into frame. The prism could attach to the camera by means of either a magnetic clip or some sort of suction cup (probably the best solution for laptop screens).

PROS: Encourages conference call participation by people other than whoever happens to be directly in front of the camera.

CONS: Might result in an unflattering “fun house mirror” effect in the final image. (Although this could be fixed in software, or by a more complicated prism setup.)