Disadvantages of HMPDs are that there is a screen needed, which obstructs the real world objects, and then if you do not have good reflection, retour reflection then it will effect the quality of the image.
| These are
some characteristics of HMPDs, how they are different from HMDs. In particular
they allow occlusion control, they allow different view points, they allow
for easy correction of distortion, and they allow for large-eye relief.
Disadvantages of HMPDs are that there is a screen needed, which obstructs the real world objects, and then if you do not have good reflection, retour reflection then it will effect the quality of the image. |
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