Head-mounted display

[0105] Figure 1A and Figure 1B are a schematic front view and a schematic top view respectively showing the head-mounted display of Embodiment 1. figure 2 is a top view showing the case where the head mounted display of Embodiment 1 is worn on the head of the observer 40 . exist figure 2 In , for convenience, only the image display device is shown, and the frame is not shown. image 3 is a conceptual diagram showing an image display device in the head mounted display of the first embodiment.

[0106] The head-mounted display of Embodiment 1 includes:

[0107] (A) the frame 10, which is worn on the head of the observer 40 and has a shape like glasses; and

[0108] (B) Two image display devices 100 .

[0109] Each image display device 100 includes:

[0110] (B-1) the image generating device 110 (110A, 110B) formed by the image generating device having the first structure; and

[0111] (B-2) The light guide device 120, which is attached to the image generating device 1...

[0133] Embodiment 2 is a modification of Embodiment 1. Figure 4 is a conceptual diagram showing an image display device 200 in a head mounted display according to Embodiment 2. Such as Figure 4 As shown, the image generating device 210 in Embodiment 2 is formed by the image generating device having the second structure. Specifically, the image generation device 210 includes:

[0134] (a) light source 251;

[0135] (b) collimating optical system 252, which converts the light emitted from light source 251 into parallel light;

[0136] (c) scanning section 253, which scans the parallel light emitted from collimating optical system 252; and

[0137] (d) The relay optical system 254 relays and emits the parallel light scanned by the scanning unit 253 . The image generating device 210 is entirely housed in a casing 213 (in Figure 4 are shown with dotted lines).

[0138] The housing 213 has an opening (not shown) through which light is emitted from the relay optical system ...

[0142] Embodiment 3 is also a modification of Embodiment 1. Figure 5A is a conceptual diagram showing an image display device 300 in the head mounted display according to Embodiment 3. Figure 5B An enlarged schematic cross-sectional view showing a part of a reflective volume hologram diffraction grating. In Embodiment 3, similarly to Embodiment 1, the image generating device 110 is formed of the image generating device having the first structure. The light guide device 320 has the same basic structure as the light guide device 120 of Embodiment 1 except for the structural aspects of the first deflecting member and the second deflecting member. That is, the light guiding device 320 includes:

[0143] (a) The light guide plate 321 is disposed at a position closer to the center of the face of the observer 40 than the image generation device 110 as a whole, the light emitted from the image generation device 110 enters the light guide plate 321, and goes toward the eyes 41 of t...