JP2002277815A - Image observing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image observing device to be worn on a head, which improves user's sense of fitting. SOLUTION: An image observation device 1 is provided with a display part 10 for image display, a spectacles part 15 which is arranged in the front of user's eyes and has an eyepiece optical system 2a which leads an image on the display part 10 to user's eyes as a virtual image, and a pair of right and left nose pad parts 6R and 6L, which are attached to the spectacles part 15 and are put on the user's nose to support the spectacles part 15, and the image on the display part 10 is led to user's eyes via the spectacles part 15. In this image observation device, shaft parts 62R and 62L, supported by bearings 61R and 61L, are slid in directions α and β so as to vary the distance between nose pad parts 6R and 6L.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head mounted image observation apparatus for observing an image by wearing it on a head in the form of glasses.

[0002]

2. Description of the Related Art A conventional head-mounted image observation apparatus is disclosed in Japanese Patent Application Laid-Open No. Hei 4-23581. According to the publication, a video observation device includes a display element that displays a video,
An eyepiece optical system for guiding an image to a user's eyes is provided with an eyeglass unit covered with a housing. At both ends of the spectacles, ear hooks are provided to hang on the user's ears, and a pair of left and right nose pads are provided at substantially the center of the spectacles to hang on the nose of the user. Thereby, the spectacles unit is arranged in front of the user's eyes.

[0003] The image light emitted by the display element is guided inside the housing, and a virtual image of the image is guided to the user's eyes via the eyepiece optical system. This allows the user to observe the video. The nose pad is formed so as to be movable back and forth. By moving the nose pad, the optical pupil of the image observation device can be arranged at a position corresponding to each user's eyes.

[0004] Another conventional video observation device is disclosed in Japanese Patent Application Laid-Open No. 8-36143. According to the gazette, the image observation device has a display unit having a display element mounted on a spectacle lens by a clip. The image emitted from the display unit passes through the spectacle lens and is guided to the user's eyes, so that the user can observe the image. Then, when the display unit is detached, it can be used as ordinary glasses.

[0005] In this video observation apparatus, the display is arranged in front of the upper part of the spectacle lens, so that the field of view of the user is partially blocked by the display during video observation. For this reason, when walking or the like while observing an image, there is a danger of causing a collision with an obstacle or the like. In order to avoid this danger, refer to Special Publication 2000-511.
No. 306 discloses an image observation apparatus in which a display element is arranged above a spectacle lens.

In this image observation apparatus, image light emitted from above the spectacle lens is guided inside the spectacle lens in parallel with the lens surface and guided to the eyes of the user. As a result, the display element is arranged outside the field of view of the user to prevent the field of view from being obstructed.

[0007]

However, according to the image observation apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 4-23581, the distance between the left and right nose pads is constant. When the nose is small, the nose pad does not touch the nose of the user, and the image observation device may slip down. For this reason, the interval is formed narrow, and the nose pad abuts on the tip of the user's nose. Therefore, there is a problem that the contact area between the nose and the nose pad is reduced, and the nose is hurt when the image observation device is worn for a long time, and the wearing feeling is deteriorated.

According to the image observation apparatus disclosed in JP-T-2000-511306, since the image light is guided in parallel with the lens surface of the spectacle lens, the spectacle lens reduces the thickness of the sectional integral of the image light flux. I need. For this reason, there is a problem that the spectacle lens becomes thick and the image observation device becomes large.

It is an object of the present invention to provide an image observation device capable of improving a user's wearing feeling.
Another object of the present invention is to provide a video observation device capable of securing a field of view during video observation and achieving downsizing.

[0010]

According to one aspect of the present invention, there is provided a display unit for displaying an image, a display unit arranged in front of a user, and a virtual image of the display unit. A spectacle unit having an eyepiece optical system that guides the user's eyes, and a pair of left and right nose pads that are attached to the spectacle section and support the spectacle section by hanging on the user's nose, Is made variable.

[0011] According to this configuration, in the image observation apparatus, the nose pad is hung on the nose of the user, and the glasses are arranged in front of the eyes of the user. When the image light is emitted from the display unit, a virtual image of the image is guided to the user's eyes via the eyepiece optical system. This allows the user to observe the video. The nosepiece provided on the eyeglass part moves in the left-right direction and abuts on a position corresponding to the user's nose to support the eyeglass part. In addition, the eyeglass unit is moved up and down by adjusting the interval between the nose pads, and the optical pupil of the eyepiece optical system is arranged in the eyes of the user.

According to a second aspect of the present invention, there is provided the image observation apparatus according to the first aspect, further comprising an adjusting section for adjusting an interval between the nose pads while the user is wearing the apparatus. And According to this configuration, when the user operates the adjustment unit while observing the image, the nose pad moves and the interval between the nose pads is changed.

According to a second aspect of the present invention, there is provided an image observation apparatus according to the first or second aspect,
The left and right nose pads are independently movable. According to this configuration, the left and right nose pads are moved by changing the amount of movement or the direction of movement in accordance with the relative positions of the nose and eyes that differ depending on the user. As a result, the optical pupil of the eyepiece optical system moves in the left-right direction with respect to the user's eyes, and the optical pupil is arranged in the user's eyes.

According to a fourth aspect of the present invention, there is provided an image observation apparatus according to the first or second aspect,
The position of an optical pupil of the eyepiece optical system with respect to a user is variable. According to this configuration, the eyeglass portion is arranged at a desired position in the up-down direction by the movement of the nose pad, and the position of the optical pupil is changed in the left-right direction to arrange the optical pupil in the eyes of the user. Also, when two eyepiece optical systems corresponding to the left and right eyes are provided, the position of the optical pupil is changed according to the distance between the left and right eyes that differs depending on the user.

According to a fifth aspect of the present invention, in the image observation apparatus according to any one of the first to fourth aspects, the image light emitted from the display unit is taken in,
A prism for guiding light while reflecting is provided on the eyeglass part. According to this configuration, the image light is guided while reflecting between the front and back surfaces of the prism, and a virtual image of the image is guided to the user's eyes by the eyepiece optical system.

According to a sixth aspect of the present invention, there is provided a display section for displaying an image, a prism for guiding the light while taking in and reflecting the image light emitted from the display section, and a virtual image for displaying the image on the display section. Image observation comprising: a translucent spectacle unit having an eyepiece optical system for guiding the user's eyes; and a mounting unit that disposes the spectacle unit in front of the user's eyes and mounts the spectacle unit on the user's head. The device is characterized in that the display unit is detachable.

According to this configuration, in the image observation device, the spectacle unit is arranged in front of the user's eyes by the mounting unit. When the display unit is mounted on, for example, a prism, the emitted image light is taken into the prism, guided while reflecting between the front and back surfaces of the prism, and a virtual image of the image is formed by the eyepiece optical system. It is led to. This allows the user to observe the video. When the display unit is detached, it is used as ordinary spectacles by the spectacle unit.

According to a seventh aspect of the present invention, in the image observation apparatus according to the sixth aspect, a cable for supplying a video signal or power to the display unit is detachably provided integrally with the display unit. It is characterized by.

According to an eighth aspect of the present invention, in the image observation apparatus according to any one of the fifth to seventh aspects, the eyepiece optical system comprises a hologram element for diffracting image light, An element is formed on the inclined reflecting surface of the prism. According to this configuration, the image light guided through the prism is diffracted and reflected by the hologram element, and the virtual image is guided to the user's eyes. When the image light is not guided to the prism, the image can be transmitted through the hologram element and the outside world can be observed.

According to a ninth aspect of the present invention, in the image observation apparatus according to any one of the fifth to eighth aspects, the prism has a power for correcting a diopter of the user with respect to external light. It is characterized by having. According to this configuration, the visual acuity of the user is corrected when observing the outside through the prism.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the image observation device of the first embodiment. A lens 3 made of a translucent member,
4 are connected by a connecting portion 8 to form an eyeglass portion 15. The connecting portion 8 includes a nose pad 6R that hangs on the nose of the user,
6L is installed. At both ends of the lenses 3, 4, temple portions 5L, 5R to be hung on the left and right ears of the user are extended. Thus, the lenses 3 and 4 are arranged in front of the eyes of the user.

A prism 2 is embedded in a part of the lens 3 for the right eye, and a display unit 10 for displaying an image is mounted above the prism 2. The display unit 10 is connected to a power supply and signal supply cable 7. FIG. 2 shows a side cross section passing through the prism 2.
4, the prism 2 is sandwiched by the housing 14.

A cover 16 is arranged outside the housing 14. The cover 16 is rotatably attached to the prism 2 by a support shaft 16a. FIG. 3 shows a top view of the display unit 10. Balls 18 a and 18 b urged by compression springs 17 a and 17 b are provided in the housing 14. When the balls 18 a and 18 b engage with holes (not shown) provided in the prism 2, the display unit 10
It is detachably attached to.

When the display unit 10 is detached from the prism 2,
External light enters from the upper surface 2d of the prism 2. For this reason,
As shown in the side sectional view and the front view of FIGS. 4 and 5, the cover 16 rotates in the direction of arrow H about the support shaft 16a so that the upper surface 2d of the prism 2 is covered. As a result, the display unit 10 is detached, the video display device 1 is reduced in weight, and can be used as ordinary glasses without a sense of incongruity. Further, since the cable 7 can be integrally attached to and detached from the display unit 10, the weight of the video display device can be further reduced when used as eyeglasses.

In FIG. 2, a display panel 11, a condenser lens 13, and a light source 12 are held by a casing 14. The display panel 11 is formed of a transmissive liquid crystal panel, and is arranged to be inclined with respect to the surface 2 b of the prism 2. The light source 12 includes a light emitting diode or the like, and emits irradiation light of the display panel 11. The condenser lens 13 collects light from the light source 12 and irradiates the light to the display panel 11. The lower end of the prism 2 is a reflection surface inclined with respect to the surface 2b, and is provided with a volume phase type hologram element 2a.

FIG. 6 shows a top view of the image observation device 1. The nose pads 6R, 6L are connected to the shafts 62R, 62L by connecting parts 64R, 64L. FIG.
The sectional view which expanded 4L is shown. The end of the shaft portion 62L is inserted into the hollow coupling portion 64L.

A screw 65L is inserted into the connecting portion 64L from one end of the connecting portion 64L in a direction perpendicular to the shaft portion 62L. The screw 65L has a through hole 62 formed in the shaft portion 62L.
a and is screwed to the other end of the coupling portion 64L.
The same configuration applies to the coupling portion 64R. Thus, the nose pads 6R and 6L are rotatable in the C direction, and can be adapted to the shape of the user's nose.

In FIG. 6, the shaft portions 62R, 62L of the nose pads 6R, 6L are supported by bearings 61R, 61L. FIG. 8 shows an AA cross-sectional view.
1R and a spring 6 which is inserted around the outer periphery of the bearing 61R.
It is pressed downward in the figure by 3R. For this reason, the shaft portion 62R can slide against the frictional force. Similarly, the shaft portion 62L is slidably supported by the bearing 61R.

As a result, the nose pads 6R and 6L can be moved in the α and β directions (see FIG. 6), respectively, and the distance between the nose pads 6R and 6L can be changed according to the size of the user's nose. Can be variable. Shafts 62R, 62L and bearing 61
R, 61L, the weight of the display unit 10 is about 2
Since the weight is 5 g, if it is set to about 0.2 N (≒ 20 g weight), the video can be observed without the eyeglass part 15 being shaken.

As shown in FIG. 9, the shaft portions 61R, 61R
When L is formed to have a circular cross section, the nose pads 6R and 6L can be rotated also in the B direction in which the rotation axis is orthogonal to the C direction (see FIG. 7). Therefore, it can be adapted to the shape of the user's nose.

In the video observation apparatus 1 having the above configuration, when a video signal is sent from the cable 7 to the display panel 11, the light source 12 emits light in synchronization with the video signal. The light beam emitted from the light source 12 is applied to the display panel 11 by the condenser lens 13 and modulated by the display panel 11 to display an image. The image light enters the prism 2 and the surface 2 of the prism 2
The light is guided while being reflected between b and the back surface 2c, and guided to the hologram element 2a. The hologram element 2a collimates and reflects the image light and guides it to the user's eye E. This allows the user to observe the video as a virtual image.

Since the image light obliquely incident on the surface 2b of the prism 2 is reflected and guided inside the prism 2, even if the cross-sectional area of the image light beam is large, it is almost the same as that of a normal spectacle lens ( The thickness of the prism 2 can be reduced to, for example, 3 mm. Thereby, the size and weight of the video observation device 1 can be reduced.

When an image is not displayed by using the hologram element 2a, the user can see the outside world through the prism 2. Since the lower end surface of the prism 2 is inclined, the transmitted light of the external light is refracted.

The front surfaces of the lenses 3, 4 and the prism 2 are formed to have a curvature, and have a power for correcting the diopter of the user. Therefore, even a user with low visual acuity can correct the visual acuity and clearly observe the outside world.
The powers of the lenses 3, 4 and the prism 2 are set in accordance with the visual acuity of the user. A concave lens can cope with myopia, and a convex lens can cope with hyperopia. The lenses 3, 4 and the prism 2 may be formed in a plane.

According to the present embodiment, the distance between the nose pads 6R and 6L can be changed according to the size of the nose of the user, so that the nose pads 6R and 6R are provided at the root of each user's nose.
L can be arranged. As a result, even if the person has a small nose, the image observation device 1 does not slip down, and the contact area between the nose pads 6R and 6L and the nose becomes large, so that the person does not hurt even when worn for a long time. Therefore, the user's feeling of wearing can be improved.

The eyeglasses 15 can be moved in the vertical direction by adjusting the distance between the nose pads 6R and 6L.
Accordingly, the position of the optical pupil of the hologram element 2a is adjusted, and the optical pupil is arranged in each user's eyes even when the optical pupil of the image observation device 1 is small at a predetermined eye relief F (see FIG. 2). Can be. Therefore, the display panel 11 and the like can be reduced in size and the optical pupil can be reduced, and the size and weight of the image observation device 1 can be reduced.

Further, since the left and right nose pads 6R and 6L can be moved independently of each other, the moving amount and the moving direction of the left and right nose pads 6R and 6L according to the relative positions of the nose and eyes which differ depending on the user. Can be varied. Therefore, the optical pupil of the hologram element 2a moves in the left-right direction with respect to the user's eyes, and the optical pupil can be arranged at a position more suitable for the user's eyes.

Next, FIG. 10 is a top view showing a main part of a spectacle type image observation device of a second embodiment. For convenience of explanation,
The same parts as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the present embodiment, the distance between the nose pads 6R and 6L attached to the connecting portion 8 is variable by the rotation of the adjusting screw 66. Other configurations are the same as those of the first embodiment.

The nose pads 6R and 6L are connected to the arms 72R and 72L by the connecting portions 64R and 64L in the same manner as in the first embodiment.
It is attached so as to be rotatable in the C direction with respect to L. The arms 72R and 72L are integrated with the nuts 68R and 68L, and the nuts 68R and 68L are screwed to the bolt 67. The nut portions 68R and 68L are formed with screws in opposite directions, and are stopped by a rotation stopper (not shown).

The adjusting screw 66 is integrated with the bolt 67, and when the adjusting screw 66 is rotated in a predetermined direction, the bolt 67 rotates. Thereby, the nut portions 65R, 6
5L moves so that the distance between the nose pads 6R and 6L is increased. When the adjustment screw 66 is rotated in the opposite direction, the distance between the nose pads 6R and 6L becomes narrow.

Accordingly, similarly to the first embodiment, the distance between the nose pads 6R and 6L is changed according to the size of the nose of the user, and the nose pads 6R and 6L of each user are attached to the base of the nose. Can be arranged in parts. Thereby, even if the person has a small nose, the image observation device 1 does not slip down, and the nose pad 6R,
The contact area of the nose with 6L is large, and it does not hurt even when worn for a long time.

Also, by adjusting the distance between the nose pads 6R and 6L, the eyeglasses 15 can be moved up and down so that the optical pupils can be arranged in the eyes of each user. Therefore, the image pupil 1 can be reduced in size and weight by reducing the optical pupil. Further, the distance between the nose pads 6R and 6L can be adjusted with the adjustment screw 66 attached to the image observation device 1, and the image observation device 1 can be easily arranged at an optimum position.

Next, FIG. 11 and FIG. 12 are a top view and a front view, respectively, showing a main part of a spectacle type image observation apparatus according to a third embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the present embodiment, the distance between the nose pads 6R and 6L attached to the connecting portion 8 is variable by the pressing of the stopper 69. Other configurations are the same as those of the first embodiment.

The nose pads 6R and 6L are connected to the arms 72R and 72L by the connecting portions 64R and 64L as in the first embodiment.
L is attached so as to be rotatable. Arm part 72
R and 72L are attracted to each other by a tension spring 70. As shown in FIG. 13, the connecting portion 8 and the arm portion 7
2R and 72L are provided with through holes 8b, 72a and 72b, respectively, and the shaft 69a of the stopper 69 is inserted therethrough.

A pressing portion 69 b is formed at one end of the stopper 69, and a compression spring 71 is contracted between the pressing portion 69 b and the connecting portion 8. At the other end of the stopper 69, a seat 69c is provided. Therefore, the arms 72R and 72L are connected to the tension spring 70 (FIG. 1) by the frictional force of the seat 69c.
1) against the urging force.

When the user presses down the pressing portion 69b, the arm portions 72R and 72L are released from the frictional force of the seat portion 69c and rotated in the directions G1 and G2 by the tension spring 70, respectively. Thereby, the interval between the arm portions 72R and 72L is reduced, and the feeling of the nose pads 6R and 6L can be adjusted.

Therefore, similarly to the first embodiment, the distance between the nose pads 6R and 6L is varied according to the size of the nose of the user, and the nose pads 6R and 6L of each user are attached to the base of the nose. Can be arranged in parts. Thereby, even if the person has a small nose, the image observation device 1 does not slip down, and the nose pad 6R,
The contact area of the nose with 6L is large, and it does not hurt even when worn for a long time.

Further, by adjusting the distance between the nose pads 6R and 6L, the spectacles 15 can be moved in the vertical direction to arrange the optical pupils in the eyes of each user. Therefore, the image pupil 1 can be reduced in size and weight by reducing the optical pupil. Further, the distance between the nose pads 6R and 6L can be adjusted with the adjustment screw 66 attached to the image observation device 1, and the image observation device 1 can be easily arranged at an optimum position.

Next, FIGS. 14 and 15 are a top view and a front view, respectively, showing a main part of a spectacle-type image observation apparatus according to a fourth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the present embodiment, the distance between the left and right lenses 3 and 4 is variable by the rotation of the adjusting screw 81 provided on the connecting portion 8. Other configurations are the same as those of the first embodiment.

The connecting portion 8 has mounting portions 80R and 80L fixed to the lenses 3 and 4. A right-hand thread portion 82R and a shaft portion 84 protrude from the attachment portion 80R. Mounting part 8
From 0L, a left-hand thread portion 82L and a tubular portion 85 are protruded, and a shaft portion 84 is fitted into the tubular portion 85.

The adjusting screw 81 is formed with a female screw, one of which is a right-hand screw and the other is a left-hand screw. Then, the adjusting screw 81 is turned to the right screw portion 82R and the left screw portion 82L.
It is screwed. Therefore, when the adjusting screw 81 is rotated in the direction J, the right-hand thread 82R and the left-hand thread 82L move in the directions K1 and M1, respectively, and the distance between the lenses 3 and 4 is increased. When the adjusting screw 81 is rotated in the direction opposite to the direction J, the distance between the lenses 3 and 4 is reduced.

According to this embodiment, in addition to the same effects as in the first embodiment, not only can the nose pads 6R and 6L be independently moved, but also if the lenses 3 and 4 are moved by rotating the adjustment screw 81. The optical pupil of the hologram element 2a can be moved in the left-right direction. Therefore, the position of the optical pupil can be adjusted more easily.

The second and third embodiments (FIGS. 10 and 1)
1), when the left and right nose pads 6R and 6L cannot be moved independently, the lenses 3 and 4 are moved by rotating the adjustment screw 81 to move the optical pupil of the image observation apparatus 1 in the left and right direction. The position can be adjusted. Therefore, the optical pupil of the hologram element 2a moves in the left-right direction in accordance with the relative position of the nose and the eye that differs depending on the user, and the optical pupil is arranged at a position more suitable for the user's eyes.

Next, FIG. 16 is a perspective view showing a glasses-type image observation apparatus according to a fifth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the present embodiment, the lenses 3 and 4 are covered and held by the frame 9. A cable 7 for supplying a signal or the like to the display unit 10 is inserted into the frame 9 and the temple unit 5L. Other configurations are the same as those of the first embodiment.

The lens 3 and the prism 2 integrated with the lens 3
Is fitted to the frame 9 and the front part 9 of the frame 9
a and a back portion (not shown). For this reason, the prism 2 and the lens 3 can slide in the K direction against the frictional force with the frame 9. Therefore, the position of the optical pupil of the hologram element 2a can be adjusted by moving the prism 2. Thus, even if the relative positions of the nose and the eyes differ depending on the user, the optical pupil can be arranged at a suitable position.

Next, FIG. 17 is a perspective view showing a spectacle type image observation apparatus according to the sixth embodiment. The same parts as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals.
This embodiment is configured in the same manner as the first embodiment, and the prism 2 and the display unit 10 are provided on both the left and right lenses 3 and 4 so that the image on the display unit 10 can be observed with both eyes. Also in this case, like the first embodiment, the nose pad 6
R and 6L can be moved in the α and β directions.
The same effect as that of the embodiment can be obtained.

When the distance between the left and right lenses 3, 4 is made variable as in the fourth embodiment (see FIG. 15), the optics of the left and right hologram elements 2a are changed according to the distance between the left and right eyes, which differs depending on the user. The pupil can be arranged at an optimal position. That is, the vertical position of the optical pupil is adjusted by changing the distance between the nose pads 6R and 6L, and the position of the eyes with respect to the nose is adjusted by independently moving the nose pads 6R and 6L. Then, the distance between the lenses 3 and 4 is changed to adjust the distance between the optical pupils to the distance between both eyes. Therefore, the size of the display panel 11 and the like can be reduced to reduce the optical pupil, and the size and weight of the image observation device 1 can be reduced.

Next, FIG. 18 is a perspective view showing a glasses-type image observation apparatus according to the seventh embodiment. The same parts as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals.
This embodiment is a head-mounted image observation device that cannot observe the outside world. A display unit and an eyepiece optical system (both not shown) are provided in the frame 91, and windows 91R and 9R are provided.
An image is observed through 1L. Also in this case, the nose pads 6R and 6L have the same configuration as in the first embodiment, and the nose pads 6R and 6L are movable in the α and β directions. The effect can be obtained.

[0059]

According to the present invention, the interval between the nose pads can be changed according to the size of the nose of the user, so that the nose pads can be arranged at the root of the nose. As a result, even if the person has a small nose, the image observation device does not slip down, and the contact area between the nose pad and the nose increases, so that the person does not hurt even when worn for a long time. Therefore, the user's feeling of wearing can be improved.

Further, since the spectacles can be moved up and down by adjusting the distance between the nose pads, even if the optical pupil of the image observation apparatus is small at the time of a predetermined eye relief, the optical pupil of each user's eyes is reduced. Can be arranged. Therefore, the optical pupil can be reduced by reducing the size of the display unit and the like, and the size and weight of the image observation device can be reduced.

Further, according to the present invention, the interval between the nose pads can be adjusted by the adjustment unit while the image observation device is mounted, so that the image observation device can be easily arranged at an optimum position.

Further, according to the present invention, since the nose rest moves independently of the left and right, even if the positional relationship between the nose and the eyes is different depending on the user, the eyepiece optical system is relatively moved in the left and right direction to move each nose. The image observation device can be arranged at a position optimal for the user.

Further, according to the present invention, the position of the optical pupil of the image observation device can be adjusted in the left-right direction, so that even if the position of the eyes with respect to the nose and the distance between the left and right eyes differ from user to user, a more optimal position An optical pupil can be arranged at the center.
Therefore, the optical pupil can be reduced by reducing the size of the display unit and the like, and the size and weight of the image observation device can be further reduced.

Further, according to the present invention, since the image light is reflected and guided inside the prism, the prism can be made as thin as a normal spectacle lens even if the sectional area of the image light beam is large. This makes it possible to reduce the size and weight of the image observation device.

Further, according to the present invention, since the image light is guided by the prism, the display unit can be arranged away from the field of view of the user, and danger during walking can be prevented. Also,
Since the light is reflected and guided inside the prism and the display unit is detachably provided, the image display device when the prism is thinned and the display unit is detached can be reduced in weight so that it can be used as ordinary glasses without discomfort.

Further, according to the present invention, since the display unit is detachably provided together with the cable, the weight of the image display device can be further reduced.

Further, according to the present invention, since the hologram element is used as the eyepiece optical system, the user can see the outside world through the hologram element when image observation is not performed.

Further, according to the present invention, since the prism has the power to correct the diopter of the user, even a user with low visual acuity can observe the outside world clearly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an image observation device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating the image observation device according to the first embodiment of the present invention.

FIG. 3 is a top view showing a display unit of the video observation device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a state where a display unit of the image observation device according to the first embodiment of the present invention is detached.

FIG. 5 is a front view showing a state where a display unit of the image observation device according to the first embodiment of the present invention is detached.

FIG. 6 is a top view illustrating the image observation device according to the first embodiment of the present invention.

FIG. 7 is a top view showing a nose pad of the image observation device according to the first embodiment of the present invention.

FIG. 8 is a sectional view taken along line AA of FIG. 6;

FIG. 9 is a cross-sectional view showing another shape of the shaft portion of the image observation device according to the first embodiment of the present invention.

FIG. 10 is a top view illustrating a main part of an image observation device according to a second embodiment of the present invention.

FIG. 11 is a top view illustrating a main part of an image observation device according to a third embodiment of the present invention.

FIG. 12 is a front view showing a main part of an image observation device according to a third embodiment of the present invention.

FIG. 13 is an enlarged view showing a stopper of the image observation device according to the third embodiment of the present invention.

FIG. 14 is a top view illustrating a main part of an image observation device according to a fourth embodiment of the present invention.

FIG. 15 is a front view illustrating a main part of an image observation device according to a fourth embodiment of the present invention.

FIG. 16 is a perspective view illustrating an image observation device according to a fifth embodiment of the present invention.

FIG. 17 is a perspective view illustrating an image observation device according to a sixth embodiment of the present invention.

FIG. 18 is a perspective view illustrating an image observation device according to a seventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image observation apparatus 2 Prism 2a Hologram part 3, 4 Lens 5R, 5L Temple part 6R, 6L Nose contact part 9, 91 Frame 10 Display part 11 Display panel 12 Light source 13 Condensing lens 14 Housing 15 Glasses part 16 Cover 17a 17b Compression spring 18a, 18b Ball 61L, 61R Bearing 62L, 62R Shaft 63L, 63R Spring 64L, 64R Coupling 65L, 65R Screw 66 Adjustment screw 67 Bolt 68R, 68L Nut 69 Stopper 70 Tension spring 71 Compression spring 72R 72R arm part 81 adjustment screw 82R right screw part 82L left screw part 84 shaft part 85 cylinder part 91 frame

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroaki Ueda 2-3-13 Azuchicho, Chuo-ku, Osaka-shi Osaka International Building Minolta Co., Ltd.

Claims (9)

[Claims] A display unit for displaying an image, an eyeglass unit disposed in front of a user and having an eyepiece optical system for guiding an image of the display unit as a virtual image to a user's eye, and attached to the eyeglass unit. And a pair of left and right nose pads for supporting the spectacles on the user's nose, wherein the distance between the nose pads is variable. 2. The image observation apparatus according to claim 1, further comprising an adjusting unit that adjusts an interval between the nose pads when the user wears the nose pad. 3. The image observation apparatus according to claim 1, wherein the left and right nose pads are independently movable. 4. The image observation apparatus according to claim 1, wherein a position of an optical pupil of the eyepiece optical system with respect to a user is variable in a left-right direction. 5. The spectacle unit according to claim 1, wherein a prism that takes in the image light emitted from the display unit and guides it while reflecting the image light is provided in the glasses unit. Video observation device. 6. A display section for displaying an image, a prism for guiding the light while taking in and reflecting the image light emitted from the display section, and eyepiece optics for guiding the image on the display section as a virtual image to a user's eyes. A translucent spectacle section having a system, and a mounting section for arranging the spectacle section in front of the user's eyes and mounting the spectacle section on the user's head, wherein the display section is detachable. A video observation device, characterized in that: 7. The video observation device according to claim 6, wherein a cable for supplying a video signal or power to the display unit is detachably provided integrally with the display unit. 8. The eyepiece optical system according to claim 5, wherein the eyepiece optical system comprises a hologram element for diffracting image light, and the hologram element is formed on an inclined reflection surface of the prism. The image observation device according to the above. 9. The image observation apparatus according to claim 5, wherein the prism has a power for correcting a diopter of the user with respect to external light.