JP2008009326A - Image display apparatus and retina scan type image display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily dispose a projection module relative to the position where an image is visibly displayed, the projection module being configured such that projection light is projected at a given angle relative to the viewing direction of a user. <P>SOLUTION: The retina scan type display 1 can be mounted on the head of a user 50. The display 1 includes: an emitting device 100 movable in a predetermined direction; and a half mirror 150 used for reflecting projection light, projected from the emitting device 100. According to a change in the position of the emitting device 100, the angle at which the emitting device 100 is disposed changes. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display device and a retinal scanning image display device, and in particular, an image display device and a retinal scanning image that can be mounted on a user's head and provided with a displaceable projection module. The present invention relates to a display device.

  Conventionally, an image display device for displaying an image includes a projection module that can be mounted on a user's head, and a reflector that reflects the projection light projected from the projection module. There is a device that displays an image by being reflected toward a user's eye by a reflector. In addition to the projection light, this apparatus can visually recognize the external environment by external light from the external environment.

In such an image display device, for example, as shown in Patent Document 1, a device is disclosed in which projected projection light is reflected by a reflection mirror and guided to a user's eye via a spectacle lens. . The projection light reflected by the reflecting mirror is guided to the spectacle lens, but external light from the outside world is guided to the user's eye through the spectacle lens without passing through the lens. In such an image display device, the focus of the image can be adjusted by adjusting the position of the optical element between the projection module and the reflection mirror.
JP-T-2001-522064

  However, in the image display apparatus as described above, since the projection module is arranged so that the projection light is projected in a direction perpendicular to the user's line-of-sight direction, a reflection mirror must be arranged in front of the user's eyes. In particular, there is a possibility that a feeling of pressure is given to a user who uses the apparatus for a long time, and that the user feels uncomfortable due to the use of the image display device. Furthermore, it is possible to move the projection module and arrange the projection module so that the projection light is projected at a predetermined angle with respect to the user's line of sight, but the projection light is incident on the user's eyes. Therefore, it is not easy to arrange the projection module at a position where the image is displayed so as to be visible.

  The present invention has been made in view of the above-described problems, and a projection module that projects projection light at a predetermined angle with respect to a user's line-of-sight direction with respect to a position where an image is displayed in a visible manner. An object of the present invention is to provide an image display device and a retinal scanning image display device that can be easily arranged.

  In order to achieve the above object, the present invention provides the following.

  That is, in the first aspect of the present invention, a projection module that can be mounted on the user's head and is movable in a predetermined direction, and a reflector that reflects the projection light projected from the projection module, In the image display apparatus provided, the arrangement angle at which the projection module is arranged changes according to the change in the position of the projection module.

  According to a second aspect of the present invention, in the first aspect of the present invention, the projection module is movable with the direction along the path connecting the user's ears and eyes as the predetermined direction. To do.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the angle of the reflector with respect to a user changes in conjunction with the displacement of the projection module. .

  According to a fourth aspect of the present invention, in the invention according to the third aspect, the projection module and the reflection plate are connected, and the angle of the reflection plate with respect to the user is interlocked with the displacement of the projection module. It is characterized by changing.

  According to a fifth aspect of the present invention, there is provided the support according to the third or fourth aspect of the present invention, wherein the support is configured to support the reflector in conjunction with the displacement of the projection module. It is characterized by being curved in the direction of.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the apparatus according to the fifth aspect includes a linear storage section that stores the support section, and the support body has elasticity, and has a linear shape against elasticity. It is stored in the storage unit.

  According to a seventh aspect of the present invention, in the invention according to the fifth or sixth aspect, the reflector and the support are detachable.

  The present invention according to claim 8 is characterized in that, in the invention according to any one of claims 5 to 7, the support has a shape bent at a plurality of positions.

  According to a ninth aspect of the present invention, in the invention according to any one of the sixth to eighth aspects, the projection module includes a storage detection sensor that detects whether or not the support portion is stored in the storage portion. Has a power control unit that controls to turn off the power of the projection module when the storage detection sensor detects that the support unit is stored in the storage unit. .

  The invention according to claim 10 is the invention according to any one of claims 1 to 9, further comprising a rotating body that is rotatable about a predetermined axis and has a gear formed on the periphery thereof. The rotating body supports the projection module, and the projection module is rotated according to the change of the position of the projection module by rotating by the meshing of the gear according to the position where the rotating body is arranged. The arrangement angle at which the projection module is arranged changes.

  Further, in the present invention according to claim 11, in the invention according to any one of claims 1 to 9, a rotating body capable of rotating around a predetermined axis and having a predetermined contact surface, A stopper that stops the movement of the rotating body, the rotating body supports the projection module, and the abutting surface contacts the stopper according to a position where the rotating body is disposed. The projection module is characterized in that the arrangement angle at which the projection module is arranged changes according to a change in the position of the projection module.

  According to a twelfth aspect of the present invention, in the invention according to any one of the third to eleventh aspects, when there is a displacement of the projection module and a change in an angle of the reflector with respect to a user, the projection module The projection light projected from is reflected by the reflecting plate and projected onto the user's eyes.

  Moreover, in this invention of Claim 13, in the invention in any one of Claim 3-12, the distance with the said projection module becomes constant with the said reflecting plate interlocking with the displacement of the said projection module. It moves to a position.

  According to a fourteenth aspect of the present invention, in the present invention according to any one of the first to thirteenth aspects, the arrangement angle of the projection module can be adjusted in accordance with a user operation. is there.

  Further, in the present invention according to claim 15, in the invention according to any one of claims 1 to 14, the reflecting surface of the reflecting plate is a flat surface.

  According to a sixteenth aspect of the present invention, in the invention according to any one of the first to fourteenth aspects, the reflecting surface of the reflecting plate is a concave surface.

  According to a seventeenth aspect of the present invention, in the invention according to any one of the first to sixteenth aspects, the reflecting plate is disposed at an outer position from the front direction of the user without disturbing external light from the front direction of the user. It is characterized by arranging.

  The present invention according to claim 18 is characterized in that, in the invention according to any one of claims 1 to 17, the projection module is attachable to spectacles.

  Further, in the present invention according to claim 19, in the invention according to any one of claims 1 to 18, the reflecting plate is made of a material containing resin.

  According to a twentieth aspect of the present invention, the image display device according to any one of the first to nineteenth aspects is provided, and the light modulated in accordance with the image signal relating to the image is scanned and emitted to the reflecting plate. By projecting, an image is projected onto the retina of at least one eye of the user, and the image is displayed.

  According to the invention described in claim 1, 2 or 20, the arrangement angle of the projection module changes according to the change of the position of the projection module movable in a predetermined direction. Even when the projection module is arranged so as to project the projection light at a predetermined angle, the arrangement angle can be changed according to the moved position, and the position where the image is displayed in a visible manner However, it can be easily arranged.

  According to the third aspect of the invention, the angle of the reflector with respect to the user changes in conjunction with the displacement of the projection module, so that the projection light is projected at a predetermined angle with respect to the user's line-of-sight direction. Even when the projection module is arranged on the projector, the reflector can be arranged at an angle with respect to the user according to the position of the projection module, and can be easily arranged with respect to the position where the image is displayed in a visible manner. it can.

  According to the fourth aspect of the present invention, the projection module and the reflection plate are connected, and the angle of the reflection plate with respect to the user changes in conjunction with the displacement of the projection module. By transmitting the motive power to the reflecting plate, the angle of the reflecting plate can be changed in conjunction with the displacement of the projection module, and it can be easily arranged at a position where an image is displayed in a visible manner.

  According to the fifth aspect of the present invention, since the support body that supports the reflection plate is interlocked with the displacement of the projection module and is curved in the direction of the user's eyes, it is easy to arrange the reflection plate in front of the user. Less susceptible to interference from other interfering objects.

  According to the sixth aspect of the present invention, the linear storage unit that stores the support unit is provided, and the support body has elasticity, and is stored in the storage unit in a linear shape against the elasticity. When the support part is accommodated at a time or the like, the support part is accommodated linearly, and the space of the apparatus can be saved.

  According to the seventh aspect of the invention, since the reflector and the support are detachable, the reflector and the support can be easily exchanged.

  According to the eighth aspect of the present invention, since the support has a shape bent at a plurality of locations, the angle of the reflector can be changed in a plurality of stages at the plurality of locations.

  According to the ninth aspect of the present invention, when the support unit is detected to be stored in the storage unit, the projection module is powered off, so that the projection module is powered when the support unit is stored. It is not turned on, and power can be saved when not in use.

  According to the tenth aspect of the present invention, the rotating body that is rotatable about a predetermined axis and has a gear formed on the periphery supports the projection module, and according to the position where the gear is disposed, By rotating by meshing, the arrangement angle at which the projection module is arranged changes according to the change in the position of the projection module, so by moving the projection module together with the rotating body, the rotating body rotates, The angle of the projection module can be changed. The position of the angle of the projection module and the angle can be adjusted according to the shape of the gear, etc., and the projection light is projected at a predetermined angle with respect to the user's line-of-sight direction. Even when the module is arranged, the arrangement angle of the projection module can be changed in accordance with the change of the position of the projection module, and can be easily arranged with respect to the position where the image is displayed in a visible manner. .

  According to the eleventh aspect of the present invention, the rotating body that is rotatable about a predetermined axis and has a predetermined contact surface supports the projection module, and depends on the position where it is arranged. By rotating by the contact of the contact surface to the stopper, the arrangement angle of the projection module changes according to the change of the position of the projection module, so by moving the projection module together with the rotating body, The rotating body rotates and the angle of the projection module can be changed. Also, the position of changing the angle of the projection module, the angle, etc. can be adjusted by the shape of the contact surface and the shape of the stopper, and the projection light is given a predetermined angle with respect to the user's line-of-sight direction. Even when the projection module is arranged so as to project the projection module, the projection module arrangement angle can be changed according to the change in the position of the projection module. Can be arranged.

  According to the twelfth aspect of the present invention, when there is a displacement of the projection module and a change in the angle of the reflector with respect to the user, the projection light projected from the projection module is reflected by the reflector, and the user's eyes Therefore, the projection light can be projected onto the user's eyes without being related to the position of the projection module, and can be easily arranged with respect to the position where the image is displayed in a visible manner.

  According to the invention of claim 13, since the reflector moves to a position where the distance from the projection module becomes constant in conjunction with the displacement of the projection module, between the projection module and the reflector, For example, it is possible to easily arrange a position where an image is displayed so as to be visible without considering the displacement and angle of the projection module and the change in focus due to the change in the angle of the reflector.

  According to the invention described in claim 14, since the arrangement angle of the projection module can be adjusted according to the user's operation, for example, when there are individual differences of the user, the operation can be finely adjusted. Furthermore, it can arrange | position easily with respect to the position which displays an image so that visual recognition is possible.

  According to the fifteenth aspect of the invention, since the reflecting surface of the reflecting plate is a flat surface, it is possible to prevent distortion with respect to external light from the outside.

  According to the invention described in claim 16, since the reflecting surface of the reflecting plate is concave, the number of components such as an optical element used for projecting the projection light to the user's eyes can be reduced.

  According to the seventeenth aspect of the present invention, since the reflecting plate is disposed at a position outside the front direction of the user without disturbing the external light from the front direction of the user, the image of the outside world according to the external light to the user. Can be visually recognized, and a feeling of pressure can be suppressed.

  According to the eighteenth aspect of the invention, since the projection module can be mounted on the glasses, even a user wearing glasses can mount the image display device.

  According to the nineteenth aspect of the present invention, since the reflecting plate is made of a material containing resin, it is possible to prevent the reflecting plate from being damaged and to reduce the weight of the device as compared with a material containing glass. .

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Configuration of image display device]
Hereinafter, an embodiment of an image display device and a retinal scanning image display device according to the present invention will be described with reference to the drawings. First, the configuration of a retinal scanning display 1 that is an example of an image display device according to the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram showing a user wearing the retinal scanning display 1 from above. FIG. 2 is an explanatory diagram showing the retinal scanning display 1 from the side and from above. FIG. 3 is an explanatory diagram showing gears and the like in the retinal scanning display 1 from above. 4 to 6 are explanatory diagrams showing the retinal scanning display 1 from above.

  As shown in FIG. 1, the retinal scanning display 1 scans beam light Z2 (hereinafter also referred to as image light, projection light, or simply light) modulated in accordance with an image signal for displaying an image. Thus, the image is projected onto the retina of at least one eye of the user 50 (observer) and displayed (projected and displayed).

  The retinal scanning display 1 emits an image light Z2 according to an image signal, guides the image light Z2 emitted from the emission device 100, and directs the image light Z2 toward the eyes of the user 50. A half mirror 150 that reflects the light, a telescopic bar 200 that supports the half mirror 150, and a base frame 250 that can store the telescopic bar 200 and supports the emitting device 100.

  The retinal scanning display 1 can be mounted on the head of the user 50. Specifically, the emission device 100 in the retinal scanning display 1 is attached to the head of the user 50 by attaching the base frame 250 directly to the user's head.

  Further, as will be described in detail later, in the retinal scanning display 1, as shown in FIG. 1A and FIG. 1B, the emission device 100 is arranged according to the position of the emission device 100 being moved. The arrangement angle changes. Further, as the position of the emitting device 100 is moved, the telescopic bar 200 and the half mirror 150 are interlocked, and the position and angle at which the half mirror 150 is arranged change.

  The emission device 100 scans the image light Z2 modulated in accordance with the image signal related to the image.

  As shown in FIGS. 2B and 2D, the emission device 100 is movable along a base frame 250 (a storage portion 252 in the base frame 250) described later. In the present embodiment, the emission device 100 is movable along the storage portion 252 in the base frame 250, but the present invention is not limited to this. That is, the emission device 100 is movable in a predetermined direction. In particular, the emission device 100 is movable along a path connecting the user's ears and eyes.

  In addition, the emitting device 100 is directly fixed to one end of the telescopic bar 200. For this reason, although mentioned later in detail, the position where the half mirror 150 is arrange | positioned, an arrangement | positioning angle, etc. will also change according to the position which the radiation | emission apparatus 100 moved.

  The emission device 100 is fixed to a rotatable gear 260 (see FIG. 3). As will be described in detail later, the output device 100 changes the position of the output device 100 by rotating the gear 260 by meshing with the gear 266 (see FIG. 3) according to the position where the gear 260 is disposed. The arrangement angle at which the emission device 100 is arranged changes according to (the position where the emission device 100 is displaced).

  Further, since the emission device 100 and the gear 260 are fixed by screws or the like, the positional relationship between the emission device 100 and the gear 260 can be finely adjusted by a user operation. That is, the arrangement angle of the emission device 100 can be adjusted according to the user's operation. For this reason, for example, when there are individual differences among users, fine adjustment can be performed by the operation, and the image can be easily arranged at a position where the image is displayed in a more visible manner. Note that the emission device 100 functions as an example of a projection module.

  The half mirror 150 is a mirror that has a flat reflecting surface for the image light Z2, reflects the image light Z2 from the emitting device 100, and transmits the external light Z1. As described above, since the reflecting surface of the half mirror 150 is a flat surface, it is possible to prevent distortion with respect to external light from the outside. An extendable bar 200 is fixed to one end of the half mirror 150, and the half mirror 150 moves in conjunction with displacement of the position of the extendable bar 200. In addition, since the telescopic bar 200 is bent in a plurality of stages, the arrangement angle at which the half mirror 150 is arranged with respect to the user changes. The half mirror 150 functions as an example of a reflector.

  As shown in FIGS. 1 and 2, the telescopic bar 200 has a shape bent at a plurality of locations and is curved in the direction of the user's eyes. One end of the telescopic bar 200 is fixed to the end of the half mirror 150, and the other end is detachably fixed to the emitting device 100. That is, the telescopic bar 200 supports the half mirror 150. In addition, the telescopic bar 200 is interlocked with the displacement of the emission device 100. Therefore, since the telescopic bar 200 that supports the half mirror 150 is curved in the direction of the user's eyes, the half mirror 150 can be easily placed in front of the user and is not easily interfered with by other interferences. Further, since the telescopic bar 200 is bent at a plurality of places, the angle of the half mirror 150 can be changed in a plurality of stages at the plurality of places.

  The stretchable bar 200 is made of a material containing shape memory resin and has elasticity. As described above, since the stretchable bar 200 is made of a material containing a resin, the half mirror 150 can be prevented from being damaged and the weight of the apparatus can be reduced as compared with a material containing glass. Further, as described above, the telescopic bar 200 has a curved shape, but has elasticity, and therefore, as shown in FIG. 5, the storage portion of the base frame 250 has a linear shape against the elasticity. 252 can be stored. For this reason, when storing the support part when not in use, the support part is stored linearly, and the space of the apparatus can be saved. In addition, by storing the expansion / contraction bar 200 in the storage unit 252 in this way, the length of the expansion / contraction bar 200 that is not stored in the storage unit 252 changes, and a half provided at one end of the expansion / contraction bar 200. The position of the mirror 150 will change. The stretchable bar 200 functions as an example of a support.

  As shown in FIG. 2, the base frame 250 is a frame that is worn on the user's head. The base frame 250 is formed with a linear accommodation portion 252 that accommodates the gear 260 that supports the emission device 100 and the telescopic bar 200.

  Further, the storage unit 252 is provided with a detection sensor 34 (see FIG. 7) for detecting whether or not the telescopic bar 200 has been stored to a predetermined position. When it is detected by the detection sensor 34 that the telescopic bar 200 has been stored to a predetermined position, the power of the emission device 100 is controlled to be turned off. As a result, the power of the emitting device 100 is not turned on when the telescopic bar 200 is stored, and power can be saved when not in use.

  In the retinal scanning display 1 as described above, the emitting device 100 and the half mirror 150 are connected by the telescopic bar 200, and the angle of the half mirror 150 with respect to the user is linked to the displacement of the emitting device 100. Will change. For this reason, even when the emission device 100 is arranged so as to project image light with a predetermined angle with respect to the user's line-of-sight direction, the half mirror 150 has an angle with respect to the user according to the position of the emission device 100. Can be easily arranged with respect to a position where an image is displayed in a visible manner. Further, by transmitting the power according to the movement of the emission device 100 to the half mirror 150, the angle of the half mirror 150 can be changed in conjunction with the displacement of the emission device 100, and the position where the image is displayed in a visible manner. However, it can be easily arranged.

  Further, even when the above-described displacement of the emission device 100 and a change in the angle of the half mirror 150 with respect to the user are present, as shown in FIG. Will be reflected and projected onto the user's eyes. This is because the above-described telescopic bar 200 is bent in a plurality of stages and has a shape corresponding to the displacement of the emission device 100. The shape of the telescopic bar 200 is a shape in which the position and angle of the half mirror 150 change so as to project the image light onto the user's eyes according to the displacement of the emitting device 100. As described above, when there is a displacement of the emission device 100 and a change in the angle of the half mirror 150 with respect to the user, the image light projected from the emission device 100 is reflected by the half mirror 150 and projected to the user's eyes. Therefore, the image light can be projected onto the user's eyes regardless of the position of the emission device 100, and can be easily arranged at a position where the image is displayed in a visible manner.

  Further, in this case, the telescopic bar 200 is formed so that the half mirror 150 moves to a position where the distance from the emitting device 100 becomes constant in conjunction with the displacement of the emitting device 100, whereby the emitting device 100 is formed. And the half mirror 150, for example, with respect to the position where an image is displayed in a visible manner without considering the displacement and angle of the emission device 100, the focus change due to the change in the angle of the half mirror 150, and the like. It can be easily arranged.

  Further, as shown in FIG. 4B, the half mirror 150 is disposed at a position where the external light Z1 from the outside enters the user's eyes. In other words, since the half mirror 150 is disposed at a position outside the front direction of the user without disturbing the external light from the front direction of the user, the user can visually recognize an image of the outside world according to the external light Z1. At the same time, the feeling of pressure can be suppressed.

  Moreover, the half mirror 150 and the telescopic bar 200 described above can be attached to and detached from the emission device 100 and the base frame 250 (retinal scanning display 1) as shown in FIG. For this reason, the half mirror 150 and the telescopic bar 200 can be easily replaced.

  The retinal scanning display 1 described above will be described below with reference to FIG.

  As shown in FIG. 3, the gear 260 has a main body 262, and is pivotally mounted around a rotation shaft 264 provided on the main body 262. A gear 266 is formed on the periphery of the main body 262 of the gear 260. The gear 260 is fixed to the bottom surface of the emission device 100. In the base frame 250, a stop piece 256 is formed on the wall surface 254 of the storage portion 252. A gear 258 is also formed on the wall surface 254. The movement of the gear 260 described above is stopped by the stop piece 256. That is, the stop piece 256 stops the movement of the gear 260. In addition, between the stop pieces 256, the gear 266 of the gear 260 meshes with the gear 258 on the wall surface 254 of the storage portion 252, and the gear 260 rotates. By the rotation of the gear 260, the arrangement angle at which the emission device 100 is arranged changes.

  That is, the gear 260 supports the emission device 100 and can rotate about a predetermined axis. A gear 266 is formed on the periphery of the gear 260. Further, the gear 260 is rotated by the meshing of the gear 266 according to the position where the gear 260 is disposed, so that the light emitting device 100 is disposed according to a change in the position of the light emitting device 100. Changes. The gear 260 functions as an example of a rotating body.

  As described above, by moving the emission device 100 together with the gear 260, the gear 260 is rotated, and the angle of the emission device 100 can be changed. Further, the position where the angle of the emission device 100 is changed, the angle, and the like can be adjusted by the shapes of the gears 258 and 266, and image light is projected at a predetermined angle with respect to the user's line-of-sight direction. Even when the emission device 100 is arranged so that the arrangement angle of the emission device 100 can be changed in accordance with the change in the position of the emission device 100, the position where the image is displayed in a visible manner can be changed. It can be easily arranged.

  Further, since the emission device 100 and the extendable bar 200 are directly fixed, the extendable bar 200 and the half mirror 150 also move in conjunction with the displacement of the output device 100. Thus, even when the emission device 100 is arranged so as to project image light at a predetermined angle with respect to the user's line of sight, the half mirror 150 has an angle with respect to the user according to the position of the emission device 100. Can be easily arranged with respect to a position where an image is displayed in a visible manner.

  In the present embodiment, the half mirror 150 that reflects the image light Z2 and transmits the external light Z1 is used as an example of the reflection plate. However, the present invention is not limited thereto, and, for example, does not transmit the external light Z1. Such a total reflection mirror may be adopted as an example of a reflection plate.

  Further, in the present embodiment, the base frame 250 is directly attached to the user's head, whereby the emission device 100 is attached to the user's head. Instead of 250, another member may be directly attached to the user's head, so that the emission device 100 may be attached to the user's head. Further, for example, the emission device 100 itself may be directly attached to the user's head.

[Electrical configuration of image display device]
The electrical configuration of the retinal scanning display 1 in the present embodiment, mainly the electrical configuration of the emission device 100, and the like will be described with reference to FIG.

  As shown in FIG. 7, the retinal scanning display 1 includes an emission device 100 and a half mirror 150. Further, the emission device 100 is provided with a light source unit 2 for processing a video signal supplied from the outside. The light source unit 2 is provided with a video signal supply circuit 3 that receives an external video signal and generates each signal as an element for synthesizing the video based on the video signal. A signal 4, a horizontal synchronization signal 5, and a vertical synchronization signal 6 are output. The light source unit 2 also includes lasers that are intensity-modulated based on the red (R), green (G), and blue (B) video signals transmitted from the video signal supply circuit 3 as video signals 4. An R laser driver 10, a G laser driver 9, and a B laser driver 8 for driving the R laser 13, the G laser 12, and the B laser 11 are provided so as to emit light. Further, the collimating optical system 14 provided so as to collimate the laser light emitted from each laser into parallel light, the dichroic mirror 15 for combining the collimated laser lights, and the combined laser light as light. A coupling optical system 16 leading to the fiber 17 is provided. As the R laser 13, G laser 12, and B laser 11, a semiconductor laser such as a laser diode or a solid-state laser may be used. The light source unit 2 in this embodiment corresponds to an example of a modulation unit that modulates the intensity of at least one light source and beam light (light beam) emitted from the light source in accordance with an image signal.

  Further, the emission device 100 of the retinal scanning display 1 includes a first relay optical system 18 that guides the laser light propagated from the light source unit 2 to the horizontal scanning system 19, and a collimated laser light through a galvano mirror 19a. A horizontal scanning system 19 that scans in the horizontal direction using the second relay optical system 20 that guides the laser beam scanned by the horizontal scanning system 19 to the vertical scanning system 21 and the horizontal scanning system 19 scans the second relay. The vertical scanning system 21 that scans the laser light incident through the optical system 20 in the vertical direction using the galvano mirror 21a and the laser light scanned by the vertical scanning system 21 are incident on the pupil 24 of the user. The third relay optical system 22 is provided. The second relay optical system 20 is conjugated with the galvano mirror 19a of the horizontal scanning system 19 and the galvano mirror 21a of the vertical scanning system 21, and the third relay optical system 22 is galvano mirror 21a with the user These pupils 24 are provided so as to be conjugate with each other.

  The half mirror 150 is disposed between the third relay optical system 22 and the user's pupil 24, and guides the image light Z2 emitted from the emission device 100 to the user's pupil 24 by total reflection or the like. It will be.

  As a specific example, the horizontal scanning system 19 is an optical system that horizontally scans a laser beam in the horizontal direction (an example of primary scanning) for each scanning line of an image to be displayed. The horizontal scanning system 19 includes a galvano mirror 19a that scans the laser beam in the horizontal direction, and a horizontal scanning control circuit 19c that controls driving of the galvano mirror 19a.

  On the other hand, the vertical scanning system 21 is an optical system that vertically scans the laser beam from the first scanning line toward the last scanning line (an example of secondary scanning) for each frame of an image to be displayed. is there. The vertical scanning system 21 includes a galvano mirror 21a that performs vertical scanning, and a vertical scanning control circuit 21c that controls driving of the galvano mirror 21a.

  The horizontal scanning system 19 is designed to scan the laser beam at a higher speed, that is, at a higher frequency than the vertical scanning system 21. Further, as shown in FIG. 7, the horizontal scanning system 19 and the vertical scanning system 21 are respectively connected to the video signal supply circuit 3 and are respectively supplied to the horizontal synchronization signal 5 and the vertical synchronization signal 6 output from the video signal supply circuit 3. The laser beam is scanned in synchronization.

  The horizontal scanning system 19 and the vertical scanning system 21 in this embodiment scan the incident beam light in a primary direction and a secondary direction substantially perpendicular to the primary direction, thereby forming a frame. It is an example of a scanning device. The horizontal scanning system 19 in the present embodiment corresponds to an example of a primary scanning unit that scans incident beam light in the horizontal direction, and the vertical scanning system 21 in the present embodiment is scanned in the horizontal direction. This corresponds to an example of secondary scanning means for scanning the light beam in the vertical direction.

  Next, the process from when the retinal scanning display 1 according to the embodiment of the present invention receives an image signal from the outside to when the image is projected onto the retina of the user will be described with reference to FIG.

  As shown in FIG. 7, in the retinal scanning display 1 according to the present embodiment, when the video signal supply circuit 3 provided in the light source unit 2 receives an external video signal, the video signal supply circuit 3 A video signal 4 including an R video signal, a G video signal, and a B video signal, a horizontal synchronizing signal 5 and a vertical synchronizing signal 6 for outputting laser beams of red, green, and blue colors are output. The R laser driver 10, the G laser driver 9, and the B laser driver 8 respectively drive the R laser 13, the G laser 12, and the B laser 11 based on the input R video signal, G video signal, and B video signal. Output a signal. Based on this drive signal, the R laser 13, the G laser 12, and the B laser 11 each generate intensity-modulated laser light and output each to the collimating optical system 14. The video signal supply circuit 3 controls the timing of generating laser light and outputting each to the collimating optical system 14 in accordance with a BD signal (not shown) indicating a driving state of a galvano mirror 19a described later. That is, such a retinal scanning display 1 (video signal supply circuit 3) controls the timing at which beam light is emitted to the galvanometer mirror 19a or the like. The laser light generated from the point light source is collimated into parallel light by the collimating optical system 14, and is further incident on the dichroic mirror 15 to be combined into one beam light, and then combined by the coupling optical system 16. It is guided to enter the optical fiber 17.

  The laser light propagated through the optical fiber 17 is collimated into parallel light from the optical fiber 17 by the collimating optical system 18 and is emitted to the horizontal scanning system 19. The emitted laser light is incident on the deflection surface 19b of the galvanometer mirror 19a of the horizontal scanning system 19. The laser beam incident on the deflecting surface 19b of the galvano mirror 19a is scanned in the horizontal direction in synchronization with the horizontal synchronizing signal and enters the deflecting surface 21b of the galvano mirror 21a of the vertical scanning system 21 via the second relay optical system 20. . In the second relay optical system 20, the deflection surface 19b of the galvanometer mirror 19a and the deflection surface 21b of the galvanometer mirror 21a are adjusted so as to have a conjugate relationship. The galvanometer mirror 21a is reciprocally oscillated so that the deflection surface 21b reflects incident light in the vertical direction in synchronization with the vertical synchronization signal 6 in the same manner as the galvanometer mirror 19a synchronizes with the horizontal synchronization signal. Laser light is scanned in the vertical direction by the galvanometer mirror 21a. Laser light that is two-dimensionally scanned in the vertical and horizontal directions by the horizontal scanning system 19 and the vertical scanning system 21 is provided so that the deflection surface 21b of the galvano mirror 21a and the pupil 24 of the user have a conjugate relationship. Further, the light is incident on the user's pupil 24 by the third relay optical system 22 and the half mirror 150 and projected onto the retina. Thus, the user can recognize the image by the laser light that is two-dimensionally scanned and projected onto the retina. The galvanometer mirror 19a of the horizontal scanning system 19 and the galvanometer mirror 21a of the vertical scanning system 21 have the same names, but their reflecting surfaces are swung (rotated) so as to scan light. It goes without saying that any drive system such as a resonance type, non-resonance type, piezoelectric drive, electromagnetic drive, electrostatic drive, or the like may be used.

  Further, the emission device 100 detects whether or not the power supply control circuit 32 that controls the power supplied to the retinal scanning display 1 and the above-described telescopic bar 200 are stored up to a predetermined position in the storage unit 252. A detection sensor 34 and a power supply unit 36 that supplies power to the entire retinal scanning display 1 are provided.

  The power supply control circuit 32 performs control to turn off the power of the emission device 100 when the detection sensor 34 detects that the telescopic bar 200 has been stored to a predetermined position in the storage unit 252. The power supply control circuit 32 functions as an example of a power supply control unit, and the detection sensor 34 functions as an example of a storage detection sensor. As a result, when it is detected that the telescopic bar 200 is stored in the storage unit 252, control is performed to turn off the power of the emitting device 100, so that the power of the emitting device 100 is turned on when the telescopic bar 200 is stored. Therefore, it is possible to save power when not in use.

[Other Embodiments]
In the above-described embodiment, the gear 266 is formed over the entire periphery of the gear 260 and the gear 258 is formed on a part of the wall surface 254 of the storage unit 252. A gear may be formed on a part of the wall 254 and the gear may be formed on the entire wall surface 254 of the storage unit 252. Further, for example, as shown in FIG. 8, the gear 266 may be formed over the entire periphery of the gear 260, and the gear 258 may be formed over the entire wall surface 254 of the storage unit 252. Of course, for example, a gear may be formed on a part of the peripheral edge of the gear 260 and a gear may be formed on a part of the wall surface 254 of the storage unit 252.

  In the above-described embodiment, the angle of the emission device 100 is changed using a gear according to the change in the position of the emission device 100. However, the present invention is not limited to this. For example, the rotation is performed around a predetermined axis. The angle of the emission device 100 may be changed using a rotating body that is movable and has a predetermined contact surface.

  A specific embodiment will be described below with reference to FIG.

  As shown in FIG. 9A, the main body 282 of the rotating body 280 is pivotally mounted around a rotating shaft 284 so as to be rotatable. The rotating body 280 is formed with an inclined surface 286 as an abutting surface, and the inclined surface 286 comes into contact with a stop piece 276 that protrudes from the wall surface in the storage portion and stops the movement of the rotating body 280. The angle of the rotating body 280 will change. In addition, the length of the stop piece 276 protruding from the wall surface in the storage portion is different, and the angle at which the rotating body 280 is arranged differs when the stop piece 276 and the inclined surface 286 come into contact with each other. That is, the rotating device 280 is rotated by the contact of the inclined surface 286 with the stop piece 276 according to the position at which the rotating device 280 is disposed, so that the output device 100 is changed according to the change in the position of the output device 100. The arrangement angle at which the emission device 100 is arranged changes.

  In this way, the rotating body that is rotatable about a predetermined axis and has a predetermined contact surface supports the projection module, and the contact surface to the stopper depends on the position of the projection module. By rotating by contact, the arrangement angle at which the projection module is arranged changes according to the position where the projection module is displaced, so by moving the projection module together with the rotating body, the rotating body rotates, The angle of the projection module can be changed. Also, the position of changing the angle of the projection module, the angle, etc. can be adjusted by the shape of the contact surface and the shape of the stopper, and the projection light is given a predetermined angle with respect to the user's line-of-sight direction. Even when the projection module is arranged so as to project the image, the arrangement angle of the projection module can be changed according to the displaced position of the projection module. Can be arranged.

  As shown in FIG. 9, a switch unit 290 is provided for enabling the rotating body 280 to move in a predetermined direction (left direction in the drawing). As shown in FIG. 9A, when the switch unit 290 is disposed at the stop position, the movement of the rotating body 280 in a predetermined direction is caused by the contact between the main body 282 and the stop piece 276. As shown in FIG. 9B, when the switch unit 290 is disposed at the moving position, the rotating body 280 is inclined, and the rotating body 280 is not moved to the left side of the H.276. Can be freely moved in a predetermined direction.

  Furthermore, in the above-described embodiment, the arrangement angle at which the rotating body 280 is arranged is changed according to the change in the position of the rotating body 280 depending on the length of the plurality of stop pieces 276. For example, as shown in FIG. 10, the inclined surface 296 of the rotating body 298 is inclined in a plurality of steps, and the stop piece 276 contacts the inclination, whereby the main body 292 rotates around the rotating shaft 294. Accordingly, the arrangement angle at which the rotating body 280 is disposed may be changed according to the change in the position of the rotating body 280. Accordingly, the arrangement angle at which the emission device 100 is arranged is changed in accordance with the change in the position of the emission device 100.

  Furthermore, in the above-described embodiment, the base frame 250 is directly attached to the head of the user 50. However, the present invention is not limited to this. For example, as shown in FIG. In this case, a mounting groove 253 is formed in the base frame 250 in addition to the storage portion 252, and the vine 302 of the glasses 300 may be fitted into the mounting groove 253. Thus, since the emission device 100 can be attached to the glasses 300, even a user wearing the glasses 300 can attach the retinal scanning display 1.

  Furthermore, in the above-described embodiment, as shown in FIG. 12A, the reflecting surface of the half mirror 150 is a flat surface. However, the present invention is not limited to this. For example, as shown in FIG. The reflecting surface of the mirror 150 may be a concave surface. As a result, the number of components such as optical elements used for projecting image light onto the user's eyes can be reduced.

  Furthermore, in the above-described embodiment, the image based on the image light is displayed only on the left eye of the user 50. However, the present invention is not limited to this. For example, the image based on the image light is displayed only on the right eye of the user 50. May be. Of course, an image based on image light may be displayed on both eyes of the user 50.

  Furthermore, in the above-described embodiment, a retinal scanning display that displays an image by projecting an image on the retina of at least one eye of the user by scanning in the two-dimensional direction and emitting it to the half mirror 150. However, the present invention is not limited to this, and it is sufficient that the image light can be emitted, and it may not be scanned in the two-dimensional direction.

  As described above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are merely examples, and various embodiments can be made based on the knowledge of those skilled in the art including the aspects described in the section of the disclosure of the invention. The present invention can be implemented in other forms that have been modified or improved.

It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the gearwheel etc. in the retinal scanning display in this embodiment. It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the gearwheel etc. in the retinal scanning display in this embodiment. It is explanatory drawing which shows the rotation body etc. in the retinal scanning display in this embodiment. It is explanatory drawing which shows the rotation body etc. in the retinal scanning display in this embodiment. It is explanatory drawing which shows the retinal scanning display in this embodiment. It is explanatory drawing which shows the half mirror in the retinal scanning display in this embodiment.

Explanation of symbols

1 Retina scanning display 50 User 100 Emitting device 150,152 Half mirror 200 Telescopic bar 250 Base frame Z1 Outside light Z2 Image light

Claims (20)

In an image display device comprising a projection module that can be mounted on a user's head and movable in a predetermined direction, and a reflector that reflects the projection light projected from the projection module,
The image display device characterized in that an arrangement angle at which the projection module is arranged changes according to a change in the position of the projection module.   The image display apparatus according to claim 1, wherein the projection module is movable with the direction along a path connecting a user's ear and eye as the predetermined direction.   The image display apparatus according to claim 1, wherein an angle of the reflector with respect to a user changes in conjunction with the displacement of the projection module.   The image display apparatus according to claim 3, wherein the projection module and the reflection plate are connected, and an angle of the reflection plate with respect to a user is changed in conjunction with displacement of the projection module. In conjunction with the displacement of the projection module, comprising a support that supports the reflector,
The image display device according to claim 3, wherein the support is curved in the direction of a user's eye. A linear storage section for storing the support section;
The image display device according to claim 5, wherein the support has elasticity and is stored in the storage portion in a linear shape against the elasticity.   The image display device according to claim 5, wherein the reflector and the support are detachable.   The image display device according to claim 5, wherein the support has a shape bent at a plurality of locations. A storage detection sensor for detecting whether or not the support unit is stored in the storage unit;
The projection module includes a power control unit that controls to turn off the power of the projection module when the storage detection sensor detects that the support unit is stored in the storage unit. The image display device according to claim 6. A rotating body that is rotatable about a predetermined axis and has a gear formed on the periphery,
The rotating body supports the projection module,
The rotation angle of the projection module is changed according to the change of the position of the projection module by changing the position of the projection module. The image display device according to claim 1, wherein the image display device changes. A rotating body capable of rotating about a predetermined axis and having a predetermined contact surface;
A stopper for stopping the movement of the rotating body,
The rotating body supports the projection module,
The projection module is rotated according to a change in the position of the projection module by rotating the rotating body by contacting the stopper with the stopper according to a position where the rotating module is disposed. The image display device according to claim 1, wherein an arrangement angle at which the position is arranged changes.   When there is a displacement of the projection module and a change in an angle of the reflector with respect to the user, the projection light projected from the projection module is reflected by the reflector and projected to the user's eyes. The image display device according to claim 3.   The image display device according to claim 3, wherein the reflector moves to a position where a distance from the projection module becomes constant in conjunction with a displacement of the projection module.   The image display device according to claim 1, wherein an arrangement angle of the projection module can be adjusted according to a user operation.   The image display device according to claim 1, wherein a reflection surface of the reflection plate is a flat surface.   The image display device according to claim 1, wherein a reflection surface of the reflection plate is a concave surface.   The image display device according to any one of claims 1 to 16, wherein the reflection plate is disposed at a position outside the front direction of the user without disturbing external light from the front direction of the user.   The image display apparatus according to claim 1, wherein the projection module is attachable to eyeglasses.   The image display device according to claim 1, wherein the reflecting plate is made of a material containing resin. 20. The image display device according to claim 1, wherein the light modulated according to an image signal relating to an image is scanned and emitted to the reflecting plate, whereby at least one eye of a user A retinal scanning image display device that projects an image on a retina and displays the image.

Images