WO2010110301A1

WO2010110301A1 - Head-mounted display apparatus

Info

Publication number: WO2010110301A1
Application number: PCT/JP2010/055056
Authority: WO
Inventors: 岳雄岩崎
Original assignee: ブラザー工業株式会社
Priority date: 2009-03-26
Filing date: 2010-03-24
Publication date: 2010-09-30
Also published as: JP2010230893A

Abstract

Provided is a head-mounted display apparatus which displays an image to a viewer by emitting image light from an exit pupil onto a viewer's eye when the apparatus is mounted on a head of the viewer, wherein the adjustment operation to adjust the position of the exit pupil in accordance with the position of the pupil of the viewer in order to make the image light from the exit pupil incident upon the pupil of the eye of the viewer can be carried out by the viewer more easily than in a known head-mounted display apparatus. In the head-mounted display apparatus, a scanner (78) has an area which receives light and reflects the received light. The reflection area has a beam scanning area (150) in which the scanner performs the beam scanning and a beam non-scanning area (152) in which the scanner cannot perform the beam scanning. The image light is incident upon the beam scanning area and guide light is incident upon the beam non-scanning area. The image light reflected by the beam scanning area and the guide light reflected from the beam non-scanning area are emitted together from the exit pupil toward the pupil (16) of the viewer.

Description

Head mounted display device

The present invention has an exit pupil that emits image light, and emits image light from the exit pupil to irradiate the observer's eyes while attached to the viewer's head. The present invention relates to a head-mounted display device that displays an image, and in particular, for an observer to adjust the position of the exit pupil to the position of the pupil so that the image light from the exit pupil enters the pupil of the observer's eye. The present invention relates to a technique for facilitating alignment work.

As a technique for optically displaying an image, for example, there is a technique for projecting image light representing an image to be displayed on the retina of the observer, thereby allowing the observer to observe the image.

In addition, as a technique for converting light from a light source into image light representing an image to be displayed, for example, planar light that is simultaneously incident from a light source is applied to each pixel using a spatial modulation element such as an LCD. Spatial modulation, thereby forming a planar image light, or a beam-shaped light incident from a light source and intensity-modulated for each pixel using a scanner There is a technique for converting to image light.

Japanese Patent Laid-Open No. 7-115607 discloses an example of a conventional head mounted display device as a device for optically displaying an image.

This head-mounted display device projects image light representing an image to be displayed on the retina, thereby enabling the observer to observe the image, and planar light incident from the light source all at once. Is used to spatially modulate each pixel using a spatial modulation element such as an LCD, thereby forming planar image light.

This type of head-mounted display device has an exit pupil that emits image light, and emits image light from the exit pupil to irradiate the viewer's eyes while being mounted on the observer's head. An image is displayed to an observer.

Therefore, when using this type of head-mounted display device, the observer must position the exit pupil so that the image light from the exit pupil enters the pupil of the observer's eye prior to the image observation event. Alignment work for aligning the eye with the pupil position is required.

The Japanese Patent Laid-Open No. 7-115607 further discloses a technique for facilitating such alignment work. According to the technology, the observer adjusts the position of the display device relative to the position of the observer's eye while observing the image of his / her eye so that the image of the eye is at the center of the display screen. It becomes possible to do. As a result, the observer can match the position of the exit pupil of the eyepiece optical system with the position of the pupil of the eyeball.

As described above, an observer who desires to observe an image using a head-mounted display device of the above-described type can receive image light from the exit pupil of the head-mounted display device prior to the image observation event. It is required to perform an alignment operation for adjusting the position of the exit pupil to the position of the pupil so as to enter the pupil of the observer's eye.

Specifically, in the alignment operation, the observer positions the pupil so that the image light from the exit pupil that cannot be seen because it is out of his field of view, i.e., the light spot, enters his field of view. The position of the exit pupil relative to must be adjusted.

However, the alignment work has not been an easy task for an observer who is not accustomed to the head-mounted display device.

Because the presence of the light spot outside the field of view is not visible to the observer, the observer cannot accurately grasp the initial position of the light spot outside the field of view. Therefore, the observer can predict the position of the light spot outside the field of view only by intuition and experience, and trial and error so that the light spot falls within the field of view. The position must be changed.

On the other hand, generally, the diameter of the image light emitted from the exit pupil of the head mounted display device, that is, the diameter of the light spot is as small as about 3 to about 10 mm.

Therefore, it is unlikely that the position of the pupil and the position of the exit pupil coincide with each other by chance while the observer changes the position of the exit pupil with respect to the position of the pupil.

Against the background described above, the present invention has an exit pupil that emits image light, and emits image light from the exit pupil to irradiate the observer's eyes while being mounted on the observer's head. A head-mounted display device that displays an image to an observer, and the observer positions the exit pupil so that the image light from the exit pupil enters the pupil of the observer's eye. An object of the present invention is to provide an apparatus that can easily perform an alignment operation for adjusting the position.

The following aspects are obtained by the present invention. Each aspect is divided into sections, each section is given a number, and is described in a form that cites other section numbers as necessary. This is to facilitate understanding of some of the technical features that the present invention can employ and combinations thereof, and the technical features that can be employed by the present invention and combinations thereof are limited to the following embodiments. Should not be interpreted. That is, it should be construed that it is not impeded to appropriately extract and employ the technical features described in the present specification as technical features of the present invention although they are not described in the following embodiments.

Further, describing each section in the form of quoting the numbers of the other sections does not necessarily prevent the technical features described in each section from being separated from the technical features described in the other sections. It should not be construed as meaning, but it should be construed that the technical features described in each section can be appropriately made independent depending on the nature.

(1) Having an exit pupil that emits image light and being attached to the viewer's head, the image light is emitted from the exit pupil and irradiated to the viewer's eyes. An image is displayed, and the position of the exit pupil can be adjusted relative to the position of the pupil of the observer,
A light source;
A modulator that temporally or spatially modulates light from the light source, thereby forming the image light;
A scanner that scans and emits incident light, and has a region where light enters and reflects the incident light, and the reflection region includes an optical scanning region in which the scanner can perform optical scanning, A scanner having a non-optical scanning area where optical scanning cannot be performed;
The image light emitted from the modulator is guided to the optical scanning region, while guide light is guided to the non-optical scanning region, and the image light and the non-light reflected from the optical scanning region of the scanner. And an optical system that emits the guide light reflected from the scanning area together toward the pupil of the observer.

According to this head mounted display device, not only image light but also guide light is emitted toward the observer's pupil. If the position of the guide light with respect to the position of the pupil is moved, the position of the image light with respect to the position of the pupil is also moved accordingly.

As a result, the observer relies on the guide light to position the exit pupil so that the image light moves from outside the field of view to the field of view, i.e., so that the image light enters the pupil of the observer's eye. Alignment work can be performed to match the position.

Therefore, according to this head mounted display device, the observer can easily perform the alignment operation for adjusting the position of the exit pupil to the position of the pupil as compared with the case where the observer cannot refer to the guide light.

Generally, in a scanner, there is a limit in increasing the area of an optical scanning region (for example, a scanning mirror) in the scanner because of a demand for increasing the scanning frequency of image light. This is because, as the area of the optical scanning region is larger, the weight of the portion constituting the optical scanning region in the scanner increases, and as a result, the maximum value of the scanning frequency decreases.

On the other hand, the larger the diameter of the guide light, the more the guide light will coincide with the position of the pupil by the ability of the guide light to assist the observer in moving the image light from outside the field of view to the field of view. Probability is high. In addition, the larger the area of the non-light scanning region of the scanner, the easier it is to increase the diameter of reflected light therefrom.

On the other hand, according to the head mounted display device according to this section, the guide light is generated not as the reflected light from the optical scanning area of the scanner but as the reflected light from the non-optical scanning area.

Therefore, according to this head-mounted display device, it is possible to freely set the diameter of the guide light independently from the request regarding the scanning frequency for the scanner. Therefore, according to this head mounted display device, the diameter of the guide light can be increased without sacrificing the original performance of the scanner.

In addition, in order to make it possible to adjust the position of the exit pupil of the head mounted display device relative to the position of the pupil of the observer, the entire optical system in the head mounted display device is In addition, it is possible to employ a method of displacing relative to the eyes of the observer, but the present invention is not limited to this. For example, by changing the position, angle, optical characteristics, etc. of at least one of the plurality of optical elements constituting the entire optical system without changing the position of the entire optical system, the exit pupil becomes the pupil of the observer. On the other hand, it may be adjusted relatively and variably.

(2) The head mounted display device according to item (1), wherein the guide light is white light.

According to this head mounted display device, the guide light is generated so as to have a natural color for the observer.

(3) The head mounted display device according to (1) or (2), wherein the guide light has a larger diameter than the image light.

According to this head mounted display device, the guide light is generated so as to have a diameter that is easier for the observer to find than the image light.

(4) The guide light has a common optical axis with the image light, and the optical system reflects the image light reflected from the optical scanning area of the scanner and the non-optical scanning area. The head-mounted display device according to any one of (1) to (3), wherein the guide light is emitted from the exit pupil toward the observer's pupil together.

According to this head-mounted display device, the guide light has an optical axis common to the image light, so that the image light and the guide light are emitted together from the exit pupil toward the observer's pupil.

In one specific example of this head mounted display device, the guide light has an optical axis common to the image light and has a diameter larger than that of the image light. In this specific example, when the guide light is irradiated to the observer's eye, the exit pupil is enlarged as compared with the case where only the image light is irradiated to the observer's eye. As a result, the observer can easily perform an alignment operation for adjusting the position of the exit pupil to the position of the pupil.

(5) The information processing device according to any one of (1) to (4), further including a selector that switches between an irradiation permission state that allows the guide light to be irradiated to an observer's eye and an irradiation blocking state that blocks the irradiation. Head mounted display device.

According to this head mounted display device, the guide light does not always exist in the observer's field of view. In one specific example of this head-mounted display device, after the presence of the guide light becomes unnecessary, the selector switches from the irradiation permission state to the irradiation blocking state, and as a result, the guide light is extinguished from the observer's field of view. .

This prevents the guide light from being wasted, and prevents the guide light from interfering with the observation of the image light by the observer.

(6) The head mounted display device according to (5), further including a second light source different from the light source that emits the guide light.

According to this head mounted display device, unlike the head mounted display device according to item (8) described later, it is not necessary to depend on a light source for generating image light in order to generate guide light.

(7) The head mounted display device according to (6), wherein the selector includes a controller that controls an on / off state of the second light source.

(8) The head mounted display device according to (5), wherein the light source emits the image light and the guide light together.

According to this head mounted display device, the image light and the guide light are generated from the light source common to them. Therefore, according to this head mounted display device, unlike the head mounted display device according to the above item (6), a light source different from the light source for generating image light is used to generate guide light. You do n’t have to.

(9) The head mounted display device according to (8), wherein the selector includes a mechanical shutter that selectively realizes the irradiation blocking state by selectively blocking the guide light.

According to this head mounted display device, the same light is emitted from the light source common to the image light and the guide light in a state where the portion that forms the guide light is prevented from being irradiated to the observer's eyes. Of the emitted light, only the portion that forms the image light is irradiated to the viewer's eyes, thereby realizing a state in which the viewer can observe the image.

(10) The head-mounted display device according to (8), wherein the selector includes a liquid crystal shutter that selectively realizes the irradiation blocking state by selectively blocking the guide light.

According to this head mounted display device, as in the head mounted display device according to the item (9), the portion of the emitted light from the light source common to the image light and the guide light forms the guide light. In the state where irradiation to the eyes is blocked, only the part of the same emitted light that forms the image light is irradiated to the observer's eyes, thereby realizing a state in which the observer can observe the image Is done.

(11) The head-mounted display device according to any one of (5) to (10), wherein the selector switches to the irradiation prevention state when a predetermined condition is satisfied in the irradiation permission state.

(12) The head-mounted display device according to (11), wherein the predetermined condition includes a condition that is satisfied when an observer performs a specific operation.

According to this head mounted display device, the selector can be switched from the irradiation permission state to the irradiation blocking state based on the intention of the observer.

Therefore, according to this head mounted display device, when the observer determines that the guide light is unnecessary, the unnecessary guide light can be extinguished from the observer's visual field.

(13) The predetermined condition is that the elapsed time from the time when the head mounted display device is turned on, the time when the guide light is generated, or the time when an event occurs between the two times reaches the reference time. The head mounted display device according to (11) or (12), which includes a condition that is sometimes satisfied.

According to this head mounted display device, the selector can be automatically switched from the irradiation permission state to the irradiation blocking state without waiting for the observer's operation.

Therefore, according to this head mounted display device, it is possible to prevent the unnecessary guide light from continuing to exist because the observer forgets to turn off the guide light even after the guide light is no longer needed. It becomes possible to do.

(14) The scanner includes a scanning mirror that reflects the incident light and scans the reflected light by reciprocating oscillation.
The optical scanning region is disposed on the scanning mirror;
The head-mounted display device according to any one of (1) to (13), wherein the non-light scanning region is disposed in a portion of the scanner excluding the scanning mirror.

According to the head-mounted display device, the non-optical scanning area that reflects the light that generates the guide light is arranged in a portion of the scanner excluding the scanning mirror. On the other hand, the scanning mirror of the scanner is required to meet the requirements regarding the scanning frequency, so it is difficult to increase the size of the scanner. On the other hand, the portion of the scanner excluding the scanning mirror is larger than the scanning mirror. It is easy to make.

Therefore, according to this head-mounted display device, a portion of the scanner excluding the scanning mirror, which is easier to enlarge than the scanning mirror, is used to generate the guide light, thereby The diameter of the guide light can be increased more easily than when the guide light is generated using a scanning mirror.

(15) Of the scanner, the scanning mirror and a portion excluding the scanning mirror are formed on a common member of both,
The head mounted display device according to item (14), wherein the optical scanning region and the non-optical scanning region are disposed on the common member.

(16) A portion of the scanner excluding the scanning mirror includes a package that accommodates the scanning mirror therein.
The head mounted display device according to item (14), wherein the non-light scanning region is disposed in the package.

(17) The non-light scanning region includes a first region that reflects the image light and a second region that reflects the guide light, whereby the guide light is transmitted from the non-light scanning region and the non-light scanning region. The head mounted display device according to any one of (1) to (16), which is generated by both the optical scanning region.

According to this head mounted display device, guide light is generated using not only the non-light scanning area but also a part of the light scanning area in the scanner. Therefore, according to this head mounted display device, it is easier to increase the intensity of the guide light than when it is necessary to generate the guide light using only the non-optical scanning region.

As a result, according to the head mounted display device, it is possible to generate guide light having a large diameter relative to the size of the non-light scanning region.

It is a top view which shows the head mounted display apparatus according to 1st Embodiment of this invention. FIG. 2 is an optical path diagram illustrating an upstream partial optical path from a light source unit to a horizontal scanning scanner in the head mounted display device illustrated in FIG. 1. FIG. 2 is an optical path diagram showing a downstream partial optical path from a vertical scanning scanner to an eyepiece optical system in the head mounted display device shown in FIG. 1. FIG. 3 is an enlarged plan view showing an internal structure of the horizontal scanning scanner shown in FIG. 2. FIG. 2 is a block diagram conceptually showing an electric circuit unit in the head mounted display device shown in FIG. 1. 6 is a flowchart conceptually showing an image display processing program executed by the computer shown in FIG. 5. FIG. 7A to FIG. 7D show an image observed by the observer wearing the head mounted display device shown in FIG. 1 within the visual field of the image display processing program shown in FIG. It is a figure which shows an example of a mode that changes with time. It is an optical path diagram which shows the upstream partial optical path from a light source part to an achromatic collimating lens among the head mounted display apparatuses according to 2nd Embodiment of this invention which use a mechanical shutter as an example of a selector. FIG. 9 is a block diagram conceptually showing an electric circuit unit in the head mounted display device shown in FIG. 8. 10 is a flowchart conceptually showing an image display processing program executed by the computer shown in FIG. 9. It is a perspective view which shows the liquid-crystal shutter which the head mounted display apparatus according to 3rd Embodiment of this invention uses as another example of a selector. It is a perspective view which shows the scanner of the head mounted display apparatuses according to 4th Embodiment of this invention.

Hereinafter, some of more specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing the head mounted display device 10 according to the first embodiment of the present invention mounted on the head 12 of an observer (user).

First, as schematically described, the head-mounted display device 10 has an exit pupil (see FIG. 3) that emits image light that represents an image to be displayed to the observer, and is provided on the head 12 of the observer. In an attached state, image light is emitted from the exit pupil and irradiated to the eyeball 14 of the observer, thereby displaying an image to the observer.

Furthermore, the head mounted display device 10 is configured such that the position of the exit pupil can be adjusted relative to the position of the pupil 16 of the observer.

Furthermore, the head-mounted display device 10 is configured to be a see-through type capable of observing a display image superimposed on the actual outside world.

As shown in FIG. 1, the head mounted display device 10 includes a device main body 20.

The apparatus main body 20 includes a housing 22 that is generally rectangular and has an internal space. The housing 22 accommodates an entire optical system 24 shown in optical path diagrams separately in FIGS. 2 and 3, and an electric circuit section 26 conceptually shown in a block diagram in FIG. The overall optical system 24 and the electric circuit unit 26 will be described in detail later with reference to FIGS.

As shown in FIG. 1, the head mounted display device 10 further includes a joint device 30. The joint device 30 is an example of a relative displacement device that can displace the position of the exit pupil of the head mounted display device 10 relative to the position of the eyeball 14 of the observer. The joint device 30 is configured to detachably attach the device main body 20 to eyeglasses 34 attached to an observer.

Here, the term “eyeglasses” has a function of correcting the diopter of the observer, and has a function of correcting the diopter of the observer and the glasses put on the

ears

36 and 36 and the nose 38 of the observer. The

eyeglasses

36 and 36 of the observer and the glasses that can be put on the nose 38 are included.

The latter glasses can be used by an observer who does not need to correct diopter, or an observer who needs to correct diopter but uses a contact lens or the like for correction. The head-mounted display device 10 is attached to the observer's head 12 so that the head-mounted display device 10 can be attached to the observer's head 12.

Accordingly, in the present specification, the term “eyeglass” focuses on functioning to attach the apparatus main body 20 to the head 12 of the observer, and is referred to as an adapter, an attachment, or a support frame. It is possible.

In any case, the eyeglasses 34 are a pair of

vines

40, 40 that are hung on the observer's

ears

36, 36, respectively, and a bridge 42 that connects the

vines

40, 40 through the pad portion 44. It is provided with what can be put on the nose 38. The

vines

40 and 40 and the bridge 42 are generally connected to each other in a foldable manner. The left and right eye lenses 46 are mounted on the bridge 42.

The joint device 30 is used to attach the device main body 20 to the glasses 34. The head mounted display device 10 is configured to project image light only on one of the observer's

eyes

14, 14, for example, only the left eyeball 14 as shown in FIG. 1.

Therefore, the joint device 30 can be mounted in a cantilever manner only on the device main body 20 on one of the pair of

vines

40, 40, for example, the vine 40 hung on the left ear 36 as shown in FIG. It is configured. Further, the joint device 30 is configured to connect the device main body 20 to the eyeglasses 34 so that relative rotation about at least two axes is possible.

Specifically, as shown in FIG. 1, the joint device 30 includes a clip 50 that is detachably attached to the temple 40, first and

second links

52 and 54, and first and second balls. Joints (an example of a universal joint) 56 and 58.

The first link 52 is fixed to the clip 50 at one end thereof, and is rotatably connected to one end of the second link 54 at the other end via a first ball joint 56. ing. On the other hand, the second link 54 is rotatably connected to the ball joint receiving portion 60 formed in the housing 22 of the apparatus main body 20 via the second ball joint 58 at the other end thereof. ing.

As shown in FIG. 1, the head mounted display device 10 further includes a half mirror 64. The half mirror 64 reflects incident light from the apparatus main body 20 toward the eyeball 14 of the observer and transmits light from the actual outside located in front of the observer toward the eyeball 14 of the observer. Let

As a result, the observer can observe the actual external environment through the half mirror 64 and simultaneously receive the image light from the apparatus main body 20 by the reflection of the half mirror 64 and observe the display image. That is, as described above, the head mounted display device 10 is a see-through type capable of observing a display image superimposed on the actual outside world.

FIG. 1 shows an observation optical axis OA and a field of view FOV when an observer observes a display image by the head mounted display device 10 with the left eyeball 14.

Next, the entire optical system 24 in the apparatus main body 20 will be described with reference to FIGS.

First, as schematically described, the entire optical system 24 includes a light source unit 70 shown in FIG. 2 and a scanning unit 72 shown in FIGS. 2 and 3. In the overall optical system 24, the beam-shaped light incident from the light source unit 70 and intensity-modulated for each pixel is converted into planar image light using the scanning unit 72. The image light thus formed is projected directly onto the observer's retina via the observer's pupil 16, thereby enabling the observer to observe the image as a virtual image.

The overall optical system 24 includes a light source unit 70, an achromatic collimating lens 74 and a horizontal scanning scanner 76 shown in FIG. 2, and a vertical scanning scanner 78 and an eyepiece optical system 80 shown in FIG.

The light beam incident on the horizontal scanning scanner 76 is horizontally scanned by the horizontal scanning scanner 76 and emitted therefrom. The emitted light is incident on the vertical scanning scanner 78 through a relay lens (not shown) so as to converge on the vertical scanning scanner 78. The incident light is vertically scanned by the vertical scanning scanner 78 and emitted therefrom. The horizontal scanning scanner 76 and the vertical scanning scanner 78 together constitute a scanning unit 72.

In this embodiment, a horizontal scanning scanner 76 is arranged as a high-speed scanner on the upstream side of the optical path of the entire optical system 24, and a vertical scanning scanner 78 is arranged on the downstream side as a low-speed scanner.

In addition, in this embodiment, while the horizontal scanning scanner 76 is disposed on the upstream side of the optical path of the entire optical system 24, the vertical scanning scanner 78 is disposed on the downstream side, but on the upstream side. While the vertical scanning scanner 78 is disposed, the horizontal scanning scanner 76 may be disposed on the downstream side.

In addition, in the present embodiment, the scanning unit 72 is configured as a combination of the horizontal scanning scanner 76 and the vertical scanning scanner 78, but swings one deflection mirror about two axes. Accordingly, horizontal scanning and vertical scanning may be realized by a single deflection mirror.

The entire optical system 24 has an entire optical path from the light source unit 70 to the eyepiece optical system 80. FIG. 2 shows the upstream optical path from the light source unit 70 to the horizontal scanning scanner 76 in the entire optical path, while FIG. 3 shows the downstream from the vertical scanning scanner 78 to the eyepiece optical system 80 in the entire optical path. The optical path is shown. FIG. 4 is an enlarged plan view showing a main part of the horizontal scanning scanner 76 (high-speed scanner).

As shown in FIG. 2, the light source unit 70 includes a main light source 82 that generates color laser light (image light) and an auxiliary light source 84 that generates guide light.

Although the auxiliary light source 84 will be described later, the main light source 82 is configured as a composite light source, and includes an R laser (red light source) 90 that emits a red laser beam, and a G laser (green light source) 92 that emits a green laser beam. And a B laser (blue light source) 94 for emitting a blue laser beam,

As shown in FIG. 5, the

laser beams

90, 92, and 94 are modulated by the

individual laser drivers

100, 102, and 104, respectively. The laser beams of three colors emitted from the

lasers

90, 92, and 94 are combined as one color laser beam (image light) that reflects the color of the corresponding pixel at each moment. The synthesized laser beam is incident on the achromatic collimating lens 74.

As shown in FIG. 2, the light source unit 70 further transmits an upstream dichroic mirror (wavelength selective mirror) 110 that transmits the red laser beam but reflects the green laser beam, and transmits the red laser beam and the green laser beam. Is provided with a downstream dichroic mirror (wavelength selective mirror) 112 for reflecting the blue laser beam.

The red laser beam emitted from the R laser 90 passes through the upstream dichroic mirror 110 and the downstream dichroic mirror 112 in that order. The green laser beam emitted from the G laser 92 is reflected by the upstream dichroic mirror 110 and then passes through the downstream dichroic mirror 112. The blue laser beam emitted from the B laser 94 is reflected by the downstream dichroic mirror 112.

As shown in FIG. 2, the red laser beam, the green laser beam reflected from the upstream dichroic mirror 110, and the blue laser beam reflected from the downstream dichroic mirror 112 share the same optical axis. As a result, one color laser beam (image light) obtained by combining the red laser beam, the green laser beam, and the blue laser beam is emitted from the downstream dichroic mirror 112.

As shown in FIG. 2, the light source unit 70 further includes a laser beam stop 114. The laser beam stop 114 can shape the cross-sectional outline of the combined color laser beam so as to be a circle having a prescribed diameter. On the other hand, the laser beam stop 114 can shape the cross-sectional outer shape of the synthesized color laser beam so that it becomes an ellipse having a specified short axis diameter and long axis diameter as necessary. Good. In the present embodiment, the laser beam stop 114 is described as one that shapes the cross-sectional outline of the combined color laser beam to be circular.

As shown in FIG. 2, the auxiliary light source 84 is configured as a single light source and includes a white LED (white light source) 120 that generates white guide light.

As shown in FIG. 2, the light source unit 70 further includes a half mirror 122 at a position downstream of the downstream dichroic mirror 112. The half mirror 122 is a glass plate on which a metal such as chromium is deposited as a thin film, and each of the red laser beam, the green laser beam, the blue laser beam, and the white guide light is transmitted through the half mirror 122. The transmittance and reflectance of the half mirror 122 are set so as to be reflected by the half mirror 122. As a result, the white guide light is incident on the achromatic collimating lens 74 from the half mirror 122 by being reflected along the optical axis common to the color laser beam.

The light source unit 70 further includes a guide light diaphragm 124. The guide light diaphragm 124 shapes the cross-sectional outer shape of the white guide light emitted from the half mirror 122 so as to be a circle having a prescribed diameter or an ellipse having a prescribed major axis diameter and minor axis diameter. To do. The circle has a diameter that is greater than the diameter of the circle defined for the cross-sectional profile of the color laser beam, and the ellipse has a diameter that is greater than the diameter in the longitudinal direction of the profile profile of the color laser beam. In the present embodiment, the guide light diaphragm 124 will be described as one that shapes the cross-sectional outer shape of the white guide light to be circular.

As a result, as shown in FIG. 2, the color laser beam and the white guide light are emitted coaxially from the achromatic collimating lens 74, and the cylindrical inner portion of the white guide light is a color laser beam. In the white guide light, the outer portion of the hollow cylindrical shape is located outside the color laser beam.

Both the color laser beam and white guide light emitted from the achromatic collimating lens 74 are incident on the horizontal scanning scanner 76.

As shown in FIG. 4, the horizontal scanning scanner 76 includes a package 130 (see FIG. 12), a plate-shaped main body (for example, metal) 132 housed in the package 130, and an excitation source. The plate-like piezoelectric element 134 is provided.

The main body 132 includes a hollow outer peripheral frame 136 and a vibration transmission unit 138 that extends integrally from the outer peripheral frame 136 toward the inside thereof. The main body portion 132 further includes a pair of

torsion beam portions

140 and 140 extending integrally from the vibration transmitting portion 138 and a deflection mirror (scanning mirror) 142 integrally coupled to the

torsion beam portions

140 and 140. ing.

The entire surface of the main body 132 has a function of reflecting incident light. The surface of the deflecting mirror 142 is surface-treated by depositing a high reflectivity metal such as aluminum so as to efficiently reflect incident light, whereas the surface of the main body 132 excluding the deflecting mirror 142 is treated. The surface is not subjected to such surface treatment for improving the reflectance, and conversely, the antireflection treatment is not performed. That is, the main body 132 reflects light with the reflectance of the main body 132 itself.

As shown in FIG. 4, a piezo-type piezoelectric element 134 made of a polarized PZT material is attached to the vibration transmitting portion 138. When the piezoelectric element 134 undergoes shear vibration, swing vibration is excited in the vibration transmission unit 138. The excited oscillation vibration is transmitted to the deflection mirror 142 via the pair of

torsion beam portions

140 and 140, thereby exciting the reciprocating torsional oscillation. The deflecting mirror 142 is reciprocally swung at a high speed at the resonance frequency of itself.

As shown in FIG. 4, in the horizontal scanning scanner 76, the deflection mirror 142 is an optical scanning region where optical scanning is performed, and a portion of the main body 132 excluding the deflection mirror 142 is a non-optical scanning region.

As shown in FIG. 4, the color laser beam (image light) emitted from the achromatic collimating lens 74 is incident only on the light scanning area of the horizontal scanning scanner 76. As a result, a main irradiation region 150 irradiated with the color laser beam is formed in an inner portion of the optical scanning region.

On the other hand, of the white guide light emitted from the achromatic collimating lens 74, the portion located outside the color laser beam is mainly incident on the non-light scanning region of the horizontal scanning scanner 76, and In addition, the light is incident on a portion of the optical scanning region located outside the main irradiation region 150. As a result, the guide light irradiation region 152 irradiated with the white guide light is formed outside the main irradiation region 150 so as to straddle the non-light scanning region and the light scanning region.

In the present embodiment, image light is formed by the light reflected from the main irradiation region 150, while white guide light is formed by the light reflected from the guide light irradiation region 152.

Incidentally, in general, a scanner is used so that light does not enter a non-optical scanning region. This is because the reflected light from the non-light scanning region creates disturbance light such as ghost light and stray light. On the other hand, in this embodiment, by using such disturbance light rather positively, the white guide light is imaged prior to the event that the observer displays the original image, as will be described later. Along with the light, the eyeball 14 of the observer is irradiated.

Therefore, in the stage preceding the image display, the exit pupil of the head mounted display device 10 is enlarged from the image display stage in which only the image light is irradiated on the eyeball 14 of the observer. Therefore, the observer can easily perform the operation of capturing the image light (original exit pupil) with the eyes by trial and error, thanks to the white guide light.

The color laser beam and white guide light emitted from the horizontal scanning scanner 76 are incident on the vertical scanning scanner 78 shown in FIG.

The vertical scanning scanner 78 has a structure common to the horizontal scanning scanner 76 shown in FIG.

However, since the vertical scanning scanner 78 is configured as a low-speed scanner in the present embodiment, a scanning frequency as high as that of the resonant horizontal scanning scanner 76 is not required. Therefore, an electromagnetically driven vertical scanning scanner (not shown) can be used in place of the piezo-driven vertical scanning scanner 78. Similarly, an electromagnetic drive system can be used as a drive system for the resonance type horizontal scanning scanner 76. As described above, the driving method of the horizontal scanning scanner 76 and the vertical scanning scanner 78 can be arbitrarily selected according to use conditions and application requirements, such as a piezo drive type, an electromagnetic drive type, and an electrostatic drive type. .

As shown in FIG. 3, in the vertical scanning scanner 78, like the horizontal scanning scanner 76, the deflection mirror 142 is an optical scanning area for performing optical scanning, and the deflection mirror 142 is excluded from the main body 132. The portion is a non-light scanning region.

The color laser beam emitted from the horizontal scanning scanner 76 is incident only on the optical scanning area of the vertical scanning scanner 78. As a result, a main irradiation region 150 irradiated with the color laser beam is formed in an inner portion of the optical scanning region.

On the other hand, of the white guide light emitted from the horizontal scanning scanner 76, the portion located outside the color laser beam is mainly incident on the non-optical scanning area of the vertical scanning scanner 78, and further, In addition, the light is incident on a portion of the optical scanning region located outside the main irradiation region 150. As a result, the guide light irradiation region 152 irradiated with the white guide light is formed outside the main irradiation region 150 so as to straddle the non-light scanning region and the light scanning region.

Furthermore, in the present embodiment, both the main irradiation region 150 and the guide light irradiation region 152 are disposed on the surface of the main body 132 which is a member common to them.

As shown in FIG. 3, the image light and the white guide light emitted from the vertical scanning scanner 78 pass through the eyepiece optical system 80, and then are shown in FIG. 1, although not shown in FIG. The light is reflected by the half mirror 64 and enters the eyeball 14 of the observer. The eyeball 14 has a pupil 16 through which light enters and an iris 160 located around the pupil 16.

As shown in FIG. 3, the image light and the white guide light are emitted toward the observer's eyeball 14 from the same exit pupil along the common optical axis OA.

As shown in FIG. 3, the image light is incident on the eyeball 14 in a pre-eye image light region (for example, a circular region having a diameter of about 3 to about 10 mm). On the other hand, the white guide light is incident on the eyeball 14 in a pre-ocular guide light region (for example, a circular region having a diameter of about 20 mm).

Since the front eye guide light region is wider than the front eye image light region, the observer can adjust the position of the apparatus main body 20 so that the position of the exit pupil coincides with the position of the pupil 16 (positioning operation). White guide light can be easily incident on the pupil 16 of the observer.

Next, the electric circuit unit 26 will be described with reference to FIG.

As shown in FIG. 5, the electric circuit unit 26 includes a controller 172 mainly composed of a computer 170. As is well known, in the computer 170, a CPU (an example of a processor) 174, a ROM (an example of memory) 176, and a RAM (another example of memory) 178 are connected to each other via a bus 180. Is made up of.

The ROM 176 stores in advance various programs including an image display processing program conceptually represented in the flowchart of FIG. At any time, necessary programs are read from the ROM 176 and executed by the CPU 174.

As shown in FIG. 5, the R laser 90, the G laser 92, and the B laser 94 are connected to a controller 172 via

respective drivers

100, 102, and 104. The controller 172 controls the on / off and the intensity of the red laser beam, the green laser beam, and the blue laser beam emitted from the R laser 90, the G laser 92, and the B laser 94 via the

respective drivers

100, 102, and 104.

As shown in FIG. 5, the white LED 120 is connected to the controller 172 via the driver 182. The controller 172 controls on / off of the white LED 120 via the driver 182.

As shown in FIG. 5, the piezoelectric element 134 of the horizontal scanning scanner 76 and the piezoelectric element 134 of the vertical scanning scanner 78 are connected to a controller 172 via

respective drivers

184 and 184. The controller 172 controls the driving of the

piezoelectric elements

134 and 134 via the

drivers

184 and 184.

As shown in FIG. 5, the controller 172 is connected with an adjustment completion switch 190 which is an example of an adjustment completion operation member. The adjustment completion switch 190 is operated by the observer so as to input to the computer 170 that the observer has moved the apparatus main body 20 and completed the adjustment work for adjusting the position of the exit pupil to the position of the pupil 16.

Next, the above-described image display processing program will be described with reference to FIG.

This image display processing program is executed by the computer 170 with the main power switch (not shown) of the head mounted display device 10 being turned on by the observer.

When the execution of the image display processing program is started, first, the horizontal scanning scanner 76 and the vertical scanning scanner 78 are driven in step S1. Eventually, both

scanners

76 and 78 reach a steady driving state.

Next, in step S2, the main light source 82 is turned on. Since it is currently before alignment adjustment, the main light source 82 is driven so that image light (color laser beam) for displaying an initial screen having a specific two-dimensional image is generated. In the example shown in FIG. 7, the main light source 82 is driven so that image light for displaying the initial screen shown in FIG. 7C is generated.

Subsequently, in step S3, the auxiliary light source 84 is turned on, and as a result, white guide light is generated.

At this time, assuming that not only image light (anterior eye image light region) but also white guide light (anterior eye guide light region) does not enter the pupil 16, in the example shown in FIG. 7, as shown in FIG. Furthermore, neither the initial screen nor the white guide light WGL exists in the field of view FOV of the observer.

Thereafter, the observer moves the apparatus main body 20 relative to the eyeball 14 by trial and error based on intuition and experience so that the white guide light enters the pupil 16.

When only the white guide light enters the pupil 16, in the example shown in FIG. 7, as shown in FIG. 7B, the white guide light WGL is a white light spot (apparent emission) in the field of view FOV. It will appear as a pupil. Thereby, the observer perceives that the image light (original exit pupil) is currently located in the vicinity of the position of the pupil 16.

Subsequently, the observer moves the apparatus body 20 toward the eyeball 14 by trial and error based on intuition and experience so that not only the white guide light but also the image light (exit pupil) enters the pupil 16. Move.

If not only white guide light but also image light enters the pupil 16, in the example shown in FIG. 7, as shown in FIG. 7C, the initial screen is white guide light WGL in the field of view FOV. It appears in a state overlapping with a white light spot representing. Thereby, the adjustment work for aligning the position of the exit pupil with the position of the pupil 16 is completed.

Thereafter, in step S4 shown in FIG. 6, it is determined whether or not the adjustment work is completed. In the present embodiment, for example, it is determined whether or not the observer has operated the adjustment completion switch 190, and if it has been operated, it is determined that the adjustment work has been completed.

If the adjustment work is completed, the determination in step S4 is YES, and then the auxiliary light source 84 is turned off in step S5.

As a result, in the example shown in FIG. 7, as shown in FIG. 7D, the white guide light WGL disappears from the field of view FOV, and only the initial screen exists in the field of view FOV. Thereby, the observer can visually recognize the initial screen without being disturbed by the white guide light.

In addition, the elapsed time from the time when the main power switch of the head mounted display device 10 is turned on, the time when the white guide light is generated, or the time when a specific event occurs between the two times is a reference. It is possible to determine whether or not the adjustment work has been completed when it is determined whether the time has been reached and the elapsed time has reached the reference time. In this case, the auxiliary light source 84 is automatically turned off.

Subsequently, in step S6, one of a plurality of options related to the video content to be displayed is selected by the observer.

Thereafter, in step S7, the main light source 82 is controlled so that image light representing the selected video content is generated. As a result, an event of image display is started.

As described above, in this embodiment, after the position of the exit pupil is made to coincide with the position of the pupil 16, image display is started, whereby the viewer can select the video content selected from the beginning of the image display. Can be reliably recognized.

Subsequently, in step S8, it is determined whether or not the current image display is completed. If completed, the determination in step S8 is YES, and then an end process is performed in step S9. This termination processing includes turning off the main light source 82, stopping the horizontal scanning scanner 76, stopping the vertical scanning scanner 78, and the like.

This completes one execution of the image display processing program.

As is apparent from the above description, in the present embodiment, for convenience of explanation, for example, the main light source 82 constitutes an example of the “light source” in the item (1), and the

drivers

100, 102, and 104 are in the same item. It can be considered that an example of a “modulator” is configured, the scanning unit 72 is an example of a “scanner” in the same term, and the entire optical system 24 is an example of an “optical system” in the same term. It is.

Further, in the present embodiment, for convenience of explanation, for example, the driver 182 and the portion of the computer 170 that executes steps S3 to S5 shown in FIG. The auxiliary light source 84 constitutes an example of “second light source” in the item (6), the controller 172 constitutes an example of “controller” in the item (7), the driver 182 and the computer 170. Of these, it can be considered that the part that executes steps S3 to S5 shown in FIG. 6 cooperates with each other to constitute an example of the “selector” in the item (11).

Next, a second embodiment of the present invention will be described. However, since this embodiment has many elements in common with the first embodiment, the common elements are quoted using the same name or reference numerals, and redundant description is omitted, and only different elements are cited. This will be described in detail.

As shown in FIG. 2, in the head mounted display device 10 according to the first embodiment, white guide light is generated by using an auxiliary light source 84 different from the main light source 82. On the other hand, in the present embodiment, the main light source 82 is used for both generation of image light and generation of guide light.

Specifically, the head mounted display device 210 according to the present embodiment allows light from the main light source 82 to enter the achromatic collimating lens 74 as both image light and guide light (guide light). Is allowed to irradiate the observer's eyeball 14) and is incident on the achromatic collimating lens 74 only as image light (the guide light is prevented from being applied to the observer's eyeball 14). It is designed to have a selector 212 that switches to an irradiation prevention state.

In the present embodiment, the selector 212 is configured as a mechanical shutter 214 that can move at high speed by a linear motion or an arc motion between an open position and a blocking position, as shown in FIG.

Specifically, as shown in FIG. 8, the mechanical shutter 214 includes a shutter plate 218 having a light transmission portion (for example, an air opening) 216 and an electromagnetic actuator 220 (which drives the shutter plate 218). 9).

The actuator 220 opens the shutter plate 218 at a blocking position (a position indicated by a broken line in FIG. 8) that blocks the portion of the light from the main light source 82 that will form the guide light, and a block that does not block that portion. It is selectively moved to a position (position indicated by a solid line in FIG. 8). An example of the actuator 220 is a step motor.

When the shutter plate 218 is in the open position, image light and guide light are generated by the light from the main light source 82. In both the horizontal scanning scanner 76 and the vertical scanning scanner 78, the image light is incident on the optical scanning area, while the portion of the guide light that is located outside the image light is incident on the non-optical scanning area. To do.

In the present embodiment, the guide light has the same color as the image light. This is because the guide light and the image light are generated by the main light source 82 common to them. Therefore, in the present embodiment, unlike the first embodiment, it is not guaranteed that the color of the guide light is always completely white. The guide light is a mixture of a plurality of colors of image light. As a result, the observer observes a rainbow-colored bright spot whose color changes with time.

FIG. 9 conceptually shows a block diagram of the electric circuit section 26 of the device main body 20 in the head mounted display device 210.

The electric circuit unit 26 is basically the same as the electric circuit unit 26 of the first embodiment, but the actuator 220 of the mechanical shutter 214 is connected to the controller 172 via the driver 222, and an auxiliary light source It is different in that the white LED 120 as 84 does not exist. The controller 172 changes the stop position of the shutter plate 218 to a selected one of the open position and the cutoff position via the driver 222.

FIG. 10 conceptually shows an image display processing program executed by the computer 170 of the controller 172.

Hereinafter, this image display processing program will be described, but the steps common to the image display processing program shown in FIG. 6 are referred to by using the common step numbers, and redundant description is omitted.

This image display processing program is executed by the computer 170 with a main power switch (not shown) of the head mounted display device 210 being turned on by an observer.

When the execution of the image display processing program is started, first, in step S101, the horizontal scanning scanner 76 and the vertical scanning scanner 78 are driven as in step S1 shown in FIG.

Next, in step S102, the main light source 82 is turned on as in step S2 shown in FIG. As a result, the main light source 82 emits image light and guide light for displaying the initial screen.

Subsequently, in step S103, the actuator 220 is controlled so that the shutter plate 218 is positioned at the open position indicated by the solid line in FIG. As a result, not only image light but also guide light is incident on the achromatic collimating lens 74.

In this state, the observer first moves the apparatus body 20 against the eyeball 14 by trial and error based on intuition and experience so that the guide light (apparent exit pupil) enters the pupil 16. move. If successful, the observer then continues trial and error using the intuition and experience of the apparatus main body 20 so that not only the guide light but also the image light (original exit pupil) enters the pupil 16. The eyeball 14 is moved. Eventually, the adjustment work for adjusting the position of the exit pupil to the position of the pupil 16 is completed.

Thereafter, in step S104, as in step S4 shown in FIG. 6, it is determined whether or not the adjustment work has been completed. If the adjustment work is completed, the determination in step S104 is YES.

Thereafter, in step S105, the actuator 220 is controlled so that the shutter plate 218 is positioned at the blocking position indicated by the broken line in FIG. As a result, only the image light is incident on the achromatic collimating lens 74. Thereby, the guide light disappears from the field of view FOV, and only the initial screen exists in the field of view FOV. Thereby, the observer can visually recognize the initial screen without being disturbed by the guide light.

Subsequently, in step S106, as in step S6 shown in FIG. 6, one of a plurality of options related to the video content to be displayed is selected by the observer.

Thereafter, in step S107, as in step S7 shown in FIG. 6, the main light source 82 is controlled so that image light representing the selected video content is generated. As a result, an event of image display is started.

Subsequently, in step S108, as in step S8 shown in FIG. 6, it is determined whether or not the current image display is completed. If completed, the determination in step S108 is YES, and then, in step S109, an end process is performed as in step S9 shown in FIG.

This completes one execution of the image display processing program.

As is clear from the above description, in the present embodiment, for example, the main light source 82 constitutes an example of the “light source” in the item (8), and the mechanical shutter 214 is the above (5), (9) or ( It can be considered that it constitutes an example of the “selector” in item 11).

Next, a third embodiment of the present invention will be described. However, since this embodiment has many elements that are common to the second embodiment, and only the elements related to the selector are different, the duplicate description of the common elements is omitted, and only the different elements are described in detail. explain.

In the second embodiment, the selector 212 is configured as a mechanical shutter 214 as shown in FIG. On the other hand, in the head mounted display device 240 according to the present embodiment, the selector 212 is configured as a liquid crystal shutter 242 as shown in FIG.

The liquid crystal shutter 242 is disposed in the head-mounted display device 240 so as not to move at the same position as the blocking position of the mechanical shutter 214. The liquid crystal shutter 242 is generally plate-shaped, and has a planar circular permanent light transmitting portion 244 that transmits incident light in the inner region, and uses the polarization of liquid crystal in the outer portion, A selective light transmission part 246 that switches between a state of transmitting incident light and a state of blocking incident light is provided.

Of the light from the main light source 82, the portion that has passed through the permanent light transmitting portion 244 enters the light scanning region of each of the

scanners

76 and 78 as image light, while passing through the selective light transmitting portion 246. This portion enters the non-light scanning area of each of the

scanners

76 and 78 as guide light.

The selective light transmission unit 246 is connected to the controller 172 of the head mounted display device 240 via the driver 250. The controller 172 allows the selective light transmission unit 246 to transmit the light incident on the selective light transmission unit 246 out of the light from the main light source 82 in the same manner as the control of the mechanical shutter 214 in the second embodiment. Switch between the transmission state and the blocking state to block.

As is clear from the above description, in the present embodiment, for example, the main light source 82 constitutes an example of the “light source” in the item (8), and the liquid crystal shutter 242 is the above (5), (10) or ( It can be considered that it constitutes an example of the “selector” in item 11).

Next, a fourth embodiment of the present invention will be described. However, this embodiment has many elements that are common to the first to third embodiments, and the only difference is the element related to the non-light scanning region used for generating the guide light in the scanner. For the elements to be repeated, a duplicate description will be omitted, and only different elements will be described in detail.

In the first to third embodiments, as shown in FIG. 4, a portion of the main body 132 of each of the

scanners

76 and 78 excluding the deflection mirror 142 generates guide light as a non-light scanning region. Used for.

Therefore, in the first to third embodiments, the main irradiation region 150 irradiated with the image light and the guide light irradiation region 152 irradiated with the guide light in the

scanners

76 and 78 are members common to them. It is arrange | positioned on the surface of the main-body part 132 which is.

On the other hand, in the head mounted display device 270 according to the present embodiment, as shown in FIG. 12, the surface of the package 130 of the

scanners

76 and 78 reflects the guide light as a non-optical scanning region. It is configured.

Therefore, in the present embodiment, of the

scanners

76 and 78, the main irradiation area 150 irradiated with the image light and the guide light irradiation area 152 irradiated with the guide light are different from each other. Respectively.

As shown in FIG. 12, a plurality of electrodes 274 are exposed on the surface of the package 130, and these electrodes 274 are not shown when

other scanners

76 and 78 are incorporated in the apparatus main body 20. Used for connection with electronic components.

As described above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are exemplifications, and are based on the knowledge of those skilled in the art including the aspects described in the section of [Disclosure of the Invention]. The present invention can be implemented in other forms with various modifications and improvements.

Claims

In addition to having an exit pupil that emits image light and being mounted on the observer's head, the image light is emitted from the exit pupil and irradiated to the viewer's eyes. A head mounted display device capable of displaying and adjusting the position of the exit pupil relative to the position of the pupil of the observer,
A light source;
A modulator that temporally or spatially modulates light from the light source, thereby forming the image light;
A scanner that scans and emits incident light, and has a region where light enters and reflects the incident light, and the reflection region includes an optical scanning region in which the scanner can perform optical scanning, A scanner having a non-optical scanning area where optical scanning cannot be performed;
The image light emitted from the modulator is guided to the optical scanning region, while guide light is guided to the non-optical scanning region, and the image light and the non-light reflected from the optical scanning region of the scanner. An optical system that emits the guide light reflected from the scanning area together with the guide light toward the pupil of the observer.
The head mounted display device according to claim 1, wherein the guide light is white light.
2. The head mounted display device according to claim 1, wherein the guide light has a diameter larger than that of the image light.
The guide light has an optical axis in common with the image light, so that the optical system reflects the image light reflected from the optical scanning area of the scanner and the guide light reflected from the non-optical scanning area. The head-mounted display device according to claim 1, wherein the head-mounted display device is emitted from the exit pupil toward the observer's pupil together.
The head-mounted display device according to claim 1, further comprising a selector that switches between an irradiation permission state for allowing the guide light to be irradiated to an observer's eye and an irradiation blocking state for blocking.
The head mounted display device according to claim 5, further comprising a second light source different from the light source and emitting the guide light.
The head mounted display device according to claim 6, wherein the selector includes a controller that controls an on / off state of the second light source.
The head mounted display device according to claim 5, wherein the light source emits the image light and the guide light together.
9. The head mounted display device according to claim 8, wherein the selector includes a mechanical shutter that selectively realizes the irradiation blocking state by selectively blocking the guide light.
9. The head mounted display device according to claim 8, wherein the selector includes a liquid crystal shutter that selectively realizes the irradiation blocking state by selectively blocking the guide light.
The head-mounted display device according to claim 5, wherein the selector switches to the irradiation prevention state when a predetermined condition is satisfied in the irradiation permission state.
The head-mounted display device according to claim 11, wherein the predetermined condition includes a condition that is satisfied when an observer performs a specific operation.
The predetermined condition is satisfied when the head mounted display device power-on timing, the guide light generation start timing, or the elapsed time from the event occurrence timing between both timings reaches a reference time. The head-mounted display device according to claim 11, wherein the head-mounted display device includes a condition to perform.
The scanner has a scanning mirror that reflects the incident light and scans the reflected light by reciprocating oscillation,
The optical scanning region is disposed on the scanning mirror;
The head-mounted display device according to claim 1, wherein the non-light scanning region is disposed in a portion of the scanner excluding the scanning mirror.
Of the scanner, the scanning mirror and the portion excluding the scanning mirror are formed on a common member of both,
15. The head mounted display device according to claim 14, wherein the optical scanning region and the non-optical scanning region are disposed on the common member.
The portion of the scanner excluding the scanning mirror includes a package that accommodates the scanning mirror therein.
The head mounted display device according to claim 14, wherein the non-light scanning region is disposed in the package.
The non-light scanning region includes a first region that reflects the image light and a second region that reflects the guide light, whereby the guide light is transmitted to the non-light scanning region and the light scanning region. The head-mounted display device according to claim 1, which is generated by both of the methods.