3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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Comparing the Lens Size and Weight of the 3D Vision 2 3D Glasses

October 16th, 2011 · 3 Comments · GeForce 3D Vision


We know that with 3D vision 2 active shutter glasses Nvidia has increased the size of the lenses used by 20%, but what this means in terms of the increase of the width and height of the lenses? On the photo above you can see 3D Vision 2 (left) compared to MonsterVision Max 3D glasses (right) with the Monster glasses being the ones with the biggest lenses I’ve seems so far among active shutter glasses. On the photo you can see that Nvidia’s new 3D glasses are almost catching up to the Monster’s 3D glasses in terms of size, so here is the width and height of the visible size of the lenses between these three 3D glasses, measuring roughly the size with the minimum and maximum height and width:

3D Vision:
Lens height – 26-32 mm
Lens width – 36-54 mm

3D Vision 2:
Lens height – 30-35 mm
Lens width – 36-58 mm

MonsterVision Max 3D:
Lens height – 30-41mm
Lens width – 38-58 mm

And since the lenses of the glasses are not with an exact rectangular size it is harder to confirm these 20% size increase between the first and second generation 3D Vision, but let us believe Nvidia on this one. I was personally more interested by the fact that the lenses of the new 3D Vision 2 glasses have roughly the same width as Monster’s 3D glasses, although they are not as high. This is a good news, considering the fact that all 3D Vision ready 3D LCD monitors are wide aspect ones, but with 3D projectors there are still quite a lot of models with 4:3 or 16:10 aspect ratio and for these bigger not only in width, but also in height lenses can be considered better.




And now for what is the weight of the old and new 3D Vision shutter glasses. As you can see from the photos, the 3D Vision glasses (on top) are a bit lighter at about 51 grams and the new 3D Vision 2 glasses (on the bottom) have a bit of extra weight for a total of about 56.2 grams. Not much of a difference, but the weight is increased a bit. According to Nvidia the new glasses should be able to provide you with up to 60 hours of usage on a single charge, the same amount of time you get with the revised version of the old 3D Vision glasses. As I’ve already mentioned in a previous post the new 3D Vision 2 glasses use a built-in 70 mAh lithium-ion rechargeable battery. And just as a comparison some of the 3D HDTV manufacturers have managed to reduce the weight of their active shutter 3D glasses to less than 30 grams (with less usage time on a single charge however), so there is more to be desired in terms of weight reduction for the next generation… ;)

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All 3D Glasses Block a Bit of the Light, but How Much Exactly

January 20th, 2010 · 9 Comments · Other S3D Tech

glasses-lux-meter


Everyone is talking about their 3D glasses not blocking as much light as the competitors or not stopping any light at all etc., but does anyone know how much light gets actually blocked when you wear a certain type of 3D glasses? I did a little quick and dirty test to check just that by placing a light meter at a distance of 20 inch (about 51 centimeters) away from display in a completely dark room with no other light sources. Then on the display (120Hz ViewSonic VX2268WM) was shown a completely white image (jps) displayed on the whole screen and I’ve taken out measurements of the light reaching to the sensor of the light meter directly and through a few different types of glasses. The light was measured in Lux units as this way I could measure the intensity of light that reaches your eye without any glasses and when wearing a certain type of 3D glasses based on different technologies…

And here are the results:
– 22″ ViewSonic white, no glasses – 47.2 lux
– 3D Vision active shutter glasses – 41.3 lux (shutters constantly open)
– 3D Vision active shutter glasses – 5.9 lux (per eye with switching shutters)
– Passive circular polarized glasses – 32.1 lux (the glasses from Acer Aspire 3D)
– Anaglyph anachrome red-cyan glasses – 21.9 lux (for red), 22.3 lux (for cyan)
– And a with pair of plain black sunglasses – 15.4 lux

And a little update with more:
– Plain paper anaglyph glasses red-cyan – 7.4 lux (red), 21.3 lux (cyan)
– 3D Vision Discover (anaglyp red-cyan) – 6.3 lux (red), 17.8 lux (cyan)
– Pulfrich paper glasses (clear-black) – 3.5 lux (black lens)

As you can see there is a significant difference in terms of the amount of light that reaches the eye of a person when using different kind of glasses for viewing 3D content with 3D Vision getting the least amount of light passing through. This is normal because of the switch on/off cycle of the shutters in these type of glasses, this however dos not mean that the technology is bad or something like that… it means that just like with other tech you need to compensate with more brightness of the image coming from the screen. But with a passive polarized glasses like the ones from the Acer Aspire 3D you can get more light to the eyes of the user and this is quite important as usually the screens of the laptops are offering less brightness than their desktop counterparts. The comparison with the plain sunglasses is also important, so that you can get a general idea on how things look through the different types of 3D glasses by just taking a look over through your sunglasses and taking into consideration the numbers above. Another thing to note is the difference between the light passing through both color filters on a normal pair or paper anaglyph glasses compared to plastic anachrome glasses (the later have better color reproduction).

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