Samsung Fights VR's Screen Door Effect, Doubles PPI With HMD Odyssey+

Credit: SamsungCredit: SamsungSamsung arrived late to the Windows Mixed Reality (MR) lineup. Microsoft's attempt to make VR accessible to as many Windows users as possible was initially dominated by so-so headsets that couldn't really compete with the Oculus RiftHTC Vive and other premium VR devices. That changed with the release of the Samsung HMD Odyssey in March. Less than a year after the headset's debut, Samsung is back at it with a refined headset in the Samsung HMD Odyssey+ announced today. 

We praised the original HMD Odyssey in our review for offering a far better experience than competitive Windows MR headsets. The offering cost a lot more than its competition--competitors were available for roughly $200-$250, and the HMD Odyssey was $500--but it justified those prices with far better hardware. That didn't mean it was perfect though, and the HMD Odyssey+ packs numerous upgrades.

Samsung HMD Odyssey and Odyssey+ Specs Comparison

Name
Samsung HMD Odyssey
Samsung HMD Odyssey+
Display Type
AMOLED
AMOLED
Display Size
Dual 3.5 inches
Dual 3.5 inches
PPI
615
1,233 "perceived" with Anti-Screen Door Effect tech
Per-Eye Resolution
1440 x 1600
1440 x 1600
Refresh Rate
60Hz (integrated GPU)
90Hz (discrete GPU)
60Hz (integrated GPU)
90Hz (discrete GPU)
FOV (HxV)
110° x ???°110° x ???°
Lens Type
FresnelUnknown
Lens Adjustment
60-72mm mechanical IPD adjustment Mechanical IPD adjustment
Sensors
Accelerometer,
Gyro sensor,
Magnetometer,
Proximity
2 Windows MR cameras,
IPD Sensor,
G-Sensor, Gyroscope, Proximity
Tracking Technology
6 DOF inside-out BW camera-based spatial tracking (stereo BW cameras)6 DOF inside-out
Integrated Camera
Stereo-tracking cameras: no video passthroughUnknown
Audio
Integrated headphones with AKG spatial audio, 2x array microphonesIntegrated headphones with AKG spatial audio,
2x array microphones
Wireless?
NoUnknown
HMD Ports
1x proprietary cable (HDMI/USB 3.0)1x proprietary cable (HDMI/USB 3.0)
HMD Cable Length
13.1ft (4m)Unknown
Dimensions
7.9 x 5.2 x 4.4 inches
(201.9 × 131.6 x 111mm)
Unknown
Weight
1.4lbs (644g)1.3lbs (590g)

The HMD Odyssey+ features dual 3.5-inch AMOLED displays with a combined resolution of 2880 x 1600. That's the same as its predecessor, but the new headset's displays are equipped with Anti-Screen Door Effect (Anti-SDE) technology. The so-called Screen Door Effect occurs when people can see the spaces between pixels in a headset's displays; Samsung claims Anti-SDE solves that problem "by applying a grid that diffuses light coming from each pixel and replicating the picture to areas around each pixel."

"This makes the spaces between pixels near impossible to see. As a result, your eyes perceive the diffused light as part of the visual content, with a perceived PPI of 1,233PPI, double that of the already high 616PPI of the previous generation Samsung HMD Odyssey+," Samsung said in its announcement. 

Samsung also worked to make the VR headset's hardware more comfortable. It's down to weighing 590g from the original's 644g, and Samsung says that now "everything, from the headband to the display position, to the Inter-Pupillary Distance (IPD) wheel, is easily adjustable so that anyone can find that perfect fit." That should help people who, say, want to wear their glasses while they use the headset.

Full specs for the HMD Odyssey+ aren't yet available; neither is pricing information. Samsung said it will be available starting today from its online store and the Microsoft store in the U.S., with releases in Korea, China, Hong Kong and Brazil to follow.

5 comments
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  • s1mon7
    I wonder if they really implemented it on the display level or optics level. My concern is with the loss of sharpness and objects looking blurry-ish, especially if they did this with optics tricks. After all you can blur out the pixels on some VR headsets by reducing the sharpness already, which technically does what they described - you just end up with an image that looks like you're having horrible eyesight issues. I really hope they came up with a better solution, as "dispersing" the image coming from individual pixels just sounds like reducing the sharpness of individual pixels and somehow doesn't sound that good to me unless convinced otherwise. As in, I'd have to see it or see a bunch of reviews clarifying the image doesn't look like potato before I'd buy it.
  • claychilde
    Yet another company using detestable Fresnels - defeats the whole object of improving the display when you've still got lens-flares and ring-ghosting. I'll never purchase another HMD with Fresnel lenses.
  • Specter0420
    This is horrible news. It sounds like a diffusion layer to me, Razer did it on their HDK2. In that case it was a textured plastic blurring film stuck right to the LCDs, it blurs the entire picture and reduces sharpness to unacceptable levels. There are actually reddit posts with instructions on how to remove it from the HDK2 with solvents and blades, removing it improves the experience. Why not work on a gen 2 headset instead of ruining your existing gen 1.5 Samsung?