CN203930212U - Virtual image display apparatus - Google Patents

Abstract

The utility model provides a kind of virtual image display apparatus, and it is also easily worn for glasses user.Owing to supporting the nose support part (40) of use, be fixed on frame portion (102), and be configured in not the position interfering with the spectacles nose holder (9d) that is arranged at glasses (9), therefore the observer who has on glasses (9) can wear virtual image display apparatus (100) on the basis of glasses, can not observe well faintly the image being formed by image display element (image element) (82).In addition, nose support part (40) has the resin portion (40b) of arbor (40a) and coated arbor, can improve thus nose support part (40) shape degree of freedom and improve its intensity, therefore can configure nose support part (40) in joint space-efficient mode, thereby guarantee and the coexisting of glasses (9).

Description

virtual image display device

technical field

The utility model relates to a virtual image display device which presents an image as a virtual image to an observer, in particular to a virtual image display device suitable for a head-mounted display worn on the observer's head.

Background technique

Various configurations have been proposed as an optical system mounted on a virtual image display device such as a head-mounted display (hereinafter also referred to as HMD) worn on the observer's head (for example, refer to Patent Documents 1 and 2).

With regard to virtual image display devices such as HMDs, progress in miniaturization and weight reduction, and wide-angle widening without degrading image quality are desired. In addition, if the viewer's field of view is completely covered and only image light can be seen, the observer cannot judge the state of the outside world, causing anxiety. It would be better to create new applications such as virtual reality by superimposing the outside world and images for observation. Therefore, it is desired to realize a display that superimposes image light without obstructing the view of the outside world. In addition, in order to improve the wearing feeling of the observer and improve the appearance, it is generally desirable to have a form close to eyeglasses.

In view of the above situation, it is considered that, for example, a virtual image display device is constituted by a light guide device arranged in a see-through manner in front of the observer's eyes, and an image from an image display element is displayed via the see-through light guide device. Light is directed to the observer's eyes. In this kind of virtual image display device, it is necessary to support the light guide device in front of the eyes. For example, there is a structure in which a pair of image display parts respectively including the image light generating device and the light guide plate are fixed to the joint member, and the joint member is fixed to the joint member. The back of the frame similar to the frame of glasses (refer to Patent Document 1).

However, in the virtual image display device described in Patent Document 1 and the like, an observer who wears glasses is not considered. That is, it is not a premise that the glasses are placed between the light guide plate and the eyes, and the light guide plate may interfere with the lenses of the glasses or the nose pads.

Patent Document 1: Japanese Unexamined Patent Publication No. 2011-2753

Patent Document 2: Japanese Patent Laid-Open No. 2010-145859

Utility model content

The utility model is completed in view of the above-mentioned background technology, and its purpose is to provide a virtual image display device that is easy to wear even for glasses users.

In order to achieve the above object, the virtual image display device of the present utility model has: an image element; an optical component, which is arranged in front of the eyes of the observer, and makes the light from the image element toward the eyes of the observer, so that the eyes of the observer can visually see the image a frame portion that supports image elements and optical components, and the frame portion forms an inner space for arranging eyeglasses in a worn state; and a nose support portion that has a core bone and a resin portion covering the core bone, the The nose support is fixed to the frame and arranged at a position where it does not interfere with a nose pad provided on the eyeglasses, and the nose support supports the frame by contacting the nose.

According to the above-mentioned virtual image display device, since the supporting nose support is fixed to the frame and arranged at a position where it does not interfere with the glasses nose pads provided on the glasses, the observer wearing glasses can wear the virtual image on top of the glasses. The display device enables good observation of an image formed by the video element without blurring. In addition, the nose support has a core and a resin portion covering the core, thereby increasing the degree of freedom in the shape of the nose support and increasing its strength, so that the nose support can be arranged in a space-saving manner to ensure compatibility with the glasses. coexistence.

According to a specific aspect of the present invention, in the above-mentioned virtual image display device, the core bone is formed of a plastically deformable metal material. At this time, by appropriately deforming the nose support, it can be easily fitted to the face of each wearer.

According to another aspect of the present utility model, the nose support part is fixed to the frame part by screw fastening. In this case, the nose piece can be replaced, and the fit can be further improved.

According to another aspect of the present invention, the nose support part has a support part at the lower end of the part extending up and down. At this time, the height of the holder can be adjusted by means of a member extending up and down.

According to another aspect of the present invention, the support portion is arranged at a lower side than the eyeglass nose pad. Since the eyeglass nose pad is generally disposed between the eyes, the pad portion of the virtual image display device is supported by abutting against a portion corresponding to the lower part of the nasal bone.

According to still another aspect of the present invention, the frame portion has: a frame supporting the optical component; and a protection portion fixed to the frame and protecting a part of the optical component. At this time, a part or the whole of the periphery of the optical component can be protected by the frame and the protective part.

According to still another aspect of the present utility model, the nose support part is fixed at the connection area between the frame and the protection part. In this case, a space for fixing the nose piece can be easily ensured, and the base of the nose piece is also inconspicuous.

According to still another aspect of the present invention, the frame has a front portion extending linearly, the protection portion is arranged below the frame so as to sandwich the optical components, and the protection portion has a central portion connected to the center of the front portion. V-shaped connection part. In this case, an inverted triangular corner is formed between the inverted V-shaped connection portion and the front surface of the frame, and this corner can be used as a fixing portion of the nose support.

According to still another aspect of the present invention, the virtual image display device further includes a pair of leg parts extending from the frame part and supported by the ears. At this time, the frame part is supported in front of the viewer's eyes by the heel part and the nose support part, and the virtual image display device adopts a form very similar to glasses.

According to yet another aspect of the present invention, the optical component has an optical block or prism-shaped light guiding device, the light guiding device has light transmittance, and the light guiding device internally controls the light from the image display element as an image element. The light from the image is reflected and directed to the viewer's eyes. In this case, by forming an intermediate image in the light guide device and observing the image, it is possible to avoid increasing the size of the image display device and the like, and to increase the degree of freedom in arrangement of the image display device and the like.

According to still another aspect of the present utility model, the light guide device has: a light guide component, which guides the light of the image and can realize the see-through of external light; and a light transmission component, which is connected with the light guide component and uses It is used to supplement the perspective function of the light from the outside. In this case, since the light guide device can be made into a shape similar to the lens portion of glasses, the field of view can be improved, and the degree of freedom in appearance can be improved.

According to still another aspect of the present invention, the image element emits signal light for two-dimensional scanning, and the optical member reflects the light from the image display element to guide the light to the eyes of the observer.

Description of drawings

FIG. 1 is a perspective view illustrating the appearance of a virtual image display device according to a first embodiment of the present invention.

2A is a perspective view showing the entire front side of the virtual image display device, FIG. 2B is a perspective view showing the entire rear side of the virtual image display device, and FIG. 2C is a rear view of the virtual image display device.

3A and 3B are partially exploded perspective views and partially exploded front views of the front side of the virtual image display device, and FIGS. 3C and 3D are partially exploded perspective views and partially exploded rear views of the back side of the virtual image display device.

Fig. 4 is a plan sectional view illustrating the virtual image display device in a state where auxiliary mounting members and the like are detached.

5 is a perspective view showing a state in which exterior members and the like are removed for illustrating the structure of the first display device in the virtual image display device.

Fig. 6A is a diagram showing an AA cross section of the virtual image display device shown in Fig. 2C, and Fig. 6B is a diagram showing a BB cross section of the virtual image display device.

FIG. 7 is an enlarged cross-sectional view illustrating a mounted state by enlarging a part of FIG. 6A .

Figure 8A, Figure 8B, Figure 8C, and Figure 8D are diagrams illustrating the arrangement relationship of the nose support part, the protection part, the auxiliary installation parts, etc. Diagram of CC, DD and EE sections of the central part.

9A and 9B are perspective views illustrating the appearance of a light guide device or an optical member mounted on the first display device.

10A and 10B are exploded perspective views illustrating how to fix the light guide member and the projection lens to the frame in the virtual image display device.

Fig. 11 is a perspective conceptual view illustrating a method of fixing a frame such as a nose support portion.

12 is a cross-sectional view of the first display device constituting the virtual image display device with respect to a plane of symmetry that is symmetrical up and down.

FIG. 13 is a diagram illustrating a virtual image display device according to a modified example.

Label description

A0: Surrounding part; AX1-AX5: Optical axis; AXO: Exit side optical axis; EY: Eye; GL: Image light; OI: Image plane; RM: Light reflection film; S11-S16: Surface 1-6; S51-S53: 1st-3rd transmissive surface; 10: light guide part; 10g: mounting part; 11: first light guide part; 12: second light guide part; 15: semi-reflecting mirror layer; 20: light guide device; 30: projection lens; 39: lens barrel; 39a: engaging part; 39g: installation part; 50: light transmission part; 61e: fixing part; 61f: fixing part; 61x: boss hole; Square end; 68e: abutting surface; 70: projection perspective device; 80: image display device; 81: lighting device; 82: image display component; 84: drive control unit; 100: virtual image display device; Device; 100B: second display device; 101a: first optical component; 101b: second optical component; 102: frame; 107: frame; 107a: front; 105b: second image forming body part; 105d: exterior parts; 105i: concave part; 108: protection part; 108g: connecting part; 108i: end part; ;3d: vision correction lens; 3h: connecting part; 4: cover part; 4h: connecting part; 8: supporting part; 9: glasses; 9d: glasses nose pad; core bone (core gold); 40b: resin part; 41: adjusting part; 42: supporting part; 43: fixed part.

Detailed ways

[First Embodiment]

Hereinafter, a first embodiment of the virtual image display device of the present invention will be described in detail with reference to FIG. 1 and the like.

As shown in FIG. 1 , the virtual image display device 100 of this embodiment is a head-mounted display having an appearance like glasses, and an observer or user who wears the virtual image display device 100 can visually view an image formed by a virtual image. Light, and the observer can see or observe the external image through perspective.

The virtual image display device 100 includes: a main body 2 constituting a main appearance; an auxiliary mounting member 3 arranged on the back side of the main body 2 ; and a cover member 4 arranged on the front side of the main body 2 . Among them, the main body 2 is a part provided with the necessary optical components of the virtual image display device 100 , and the auxiliary mounting part 3 and the cover part 4 shown by phantom lines can be attached and detached from the main body 2 at any time as optional accessories.

The main body 2 in the virtual image display device 100 is equipped with: the first and the second optical components 101a, 101b, which cover the eyes of the observer in a see-through manner; the frame part 102, which supports the two optical components 101a, 101b; The second image forms main body parts 105a and 105b, which are added to the part from the left and right ends of the frame part 102 to the heel part (leg part) 104 behind. Here, the first display device 100A formed by combining the first optical member 101a on the left side and the first image forming main body 105a in the drawing is a part that forms a virtual image for the right eye, and can also be displayed as a virtual image alone. The device functions. In addition, the second display device 100B formed by combining the second optical member 101b on the right side and the second image forming main body 105b in the drawing forms a virtual image for the left eye, and can also be used as a virtual image display device alone. function.

2A is a perspective view illustrating the appearance of the front side of the virtual image display device 100 , FIG. 2B is a perspective view illustrating the appearance of the back side of the virtual image display device 100 , and FIG. 2C is a rear view of the virtual image display device 100 . 3A and 3B are perspective views and front views showing the front side of the virtual image display device 100 partially disassembled, and FIGS. 3C and 3D are exploded perspective views and front views showing the back side of the virtual image display device 100 partially disassembled. Rear view. FIG. 4 is a top cross-sectional view of the virtual image display device 100 .

As shown in the drawing, the frame portion 102 provided on the main body 2 of the virtual image display device 100 includes: a frame 107 as a beam portion disposed on the upper side; and a protection portion 108 disposed on the lower side. In the frame part 102, the upper frame (beam part) 107 shown in FIG. X direction) the front part 107a extended; and a pair of side part 107b, 107c extended along the front-back depth direction (Z direction). The frame 107, ie, the front portion 107a and the side portions 107b, 107c is an integral part made of metal formed of aluminum die-cast or other various metal materials. The width in the depth direction (Z direction) of the front portion 107a is sufficiently thicker than the thickness or width of the light guide device 20 corresponding to the first and second optical members 101a and 101b. On the left side of the frame 107, specifically, at the side end 65a of the front portion 107a from the left end portion to the side portion 107b, the first optical member 101a and the first image forming main body portion 105a are aligned with each other and passed It is directly fixed by screw fastening, thereby being supported there. In addition, on the right side of the frame 107, specifically, at the side end 65b that is the portion from the right end of the front portion 107a to the side portion 107c, the second optical member 101b and the second image forming main body portion 105b are aligned with each other. And it is directly fixed by screw fastening, thereby being supported there. Moreover, the 1st optical member 101a and the 1st image forming main body part 105a are mutually aligned by fitting, and the 2nd optical member 101b and the 2nd image forming main body part 105b are mutually aligned by fitting.

The protector 108 shown in FIG. 2C and the like is an under rim-shaped member, and is arranged and fixed below the frame 107 . The central portion CR1 (see FIG. 3B ) of the protective portion 108 has a connecting portion 108g located in the connecting area, and the connecting portion 108g is fixed to the central portion 107g of the frame 107 by fitting and screwing (see FIG. 2A etc.). The protector 108 is an elongated plate-shaped member bent into two stages in the shape of a crank, and is integrally formed of a metal material or a resin material. The connection portion (connection region) 108g of the protection portion 108 has an inverted V shape, and therefore, a pair of inverted triangular corners 6 are formed between the connection portion 108g and the front portion 107a of the frame 107 (see FIG. 1 ). The corner portion 6 will be described in detail below, and can be used as a support portion 8 for detachably fixing the auxiliary mounting member 3 and the cover member 4 . The width of the protection portion 108 in the depth direction (Z direction) is approximately the thickness or width of the light guide device 20 . The 1st terminal part 108i of the protection part 108 is fixed to the 1st image formation main body part 105a by fitting, and the 2nd terminal part 108j of the protection part 108 is fixed to the 2nd image formation main body part 105b by fitting. More specifically, as shown in FIG. 2C , the first end portion 108i of the protective portion 108 is in a state of being fitted in the concave portion 105i provided in the outer member 105e of the cover-shaped outer member 105d covering the first image forming main body portion 105a. be fixed. In addition, the second end portion 108j of the protective portion 108 is fixed in a state of being fitted in the recessed portion 105j provided in the outer member 105e of the cover-shaped outer member 105d covering the second image forming main body portion 105b.

The frame 107 not only supports the first and second image forming body parts 105a, 105b, but also plays a role of protecting the inside of the first and second image forming body parts 105a, 105b in cooperation with the exterior member 105d. The frame 107 also serves to protect the first and second optical members 101a, 101b connected to the first and second image forming main bodies 105a, 105b or the upper side of the light guide device 20 . The protection part 108 has a function of protecting the side and bottom parts of the respective optical components 101 a and 101 b or the light guide device 20 . Specifically, the protection part 108 protects the side edge part near the inner side of the nose in the peripheral part A0 of the root part (or the ellipse or the light guide device 20 shown in FIG. 5 ) of the first and second image forming main parts 105a, 105b. The lower part of the lower side and the lower side are protected from damage caused by various objects around the use environment. That is, if the frame 107 and the protective part 108 have sufficient strength, even if the virtual image display device 100 collides with other surrounding objects, the main parts 105a, 105b and the first and second images can be formed on the first and second images. In the optical components 101a, 101b, especially in the exposed light guide device 20, the possibility of damage or misalignment is reduced. In addition, the durability of the virtual image display device 100 can be improved even against a strong impact from any direction such as when the virtual image display device 100 is dropped.

The protection portion 108 is separated from or gently contacts the elliptical peripheral portion A0 of the light guide device 20 excluding the root side connected to the first and second image forming main body portions 105a and 105b. In addition, the peripheral portion A0 of the light guide device 20 is also separated from or gently in contact with the front portion 107 a of the frame (beam portion) 107 . In this way, the first and second optical members 101a, 101b or the light guide device 20 are close to the frame 107 and the protection part 108 at the C-shaped peripheral part A0 except the root side, but are not fixed to the frame 107 and the protection part 108 . Therefore, even if there is a difference in thermal expansion coefficient between the light guide device 20 in the center and the frame part 102 including the frame 107 and the protection part 108, the expansion of the light guide device 20 in the frame part 102 is allowed, thereby preventing the light guide device from 20 produces distortion, deformation and breakage.

As shown in FIG. 5 , it can be seen that the first display device 100A includes: a projection see-through device 70 as an optical system for projection; and an image display device 80 that forms video light. The projection see-through device 70 has a function of projecting the image formed by the first image forming main body 105 a into the observer's eyes as a virtual image. The projection see-through device 70 includes a light guide member 10 for light guide and see-through, a light-transmitting member 50 for see-through, and a projection lens 30 for imaging. That is, the first optical member 101 a or the light guide device 20 is composed of the light guide member 10 and the light transmission member 50 , and the first image forming main body 105 a is composed of the image display device 80 and the projection lens 30 .

Hereinafter, with reference to FIG. 6A and FIG. 7, etc., the nose support part 40 provided along with the frame (beam part) 107 of the frame part 102 is demonstrated. The nose support part 40 is fixed to the frame 107, and has a function of supporting the frame part 102 by abutting against the observer's nose. That is, the frame part 102 is arranged in front of the observer through the nose piece 40 supported on the nose and the pair of heel parts 104 supported on the ears. The combined structure of the frame portion 102 , the nose support portion 40 and the leg wire portion 104 is similar in appearance to a spectacle frame, and can achieve a wearing feeling similar to spectacle.

The nose piece 40 is fixed to the central portion 107g of the front portion 107a of the frame 107 constituting the upper side of the frame portion 102 by screwing, and extends downward. The nose support part 40 has: a fixed part 43 at the upper center; a pair of length adjustment members 41 extending up and down; The fixed part 43 is a part for stably fixing the nose support part 40 to the frame 107 . In the fixed part 43, the partially exposed core bar 40a is sandwiched between the central part 107g of the frame 107 and the top CH of the connection part (connection area) 108g provided on the protection part 108, and is screwed into the front part 107a. The screws 107s in the threaded holes 107r are fastened together to be fixed together. The length adjustment member 41 has a function of adjusting the interval, the height position, etc. of the holders 42 . The pair of length adjusting members 41 expand at an angle θ1 toward the distal end side (see FIG. 2C and the like), thereby defining an interval between the pair of holders 42 . In addition, the tip of the shaft of the length adjustment member 41 protrudes toward the observer, and has an inclination of an angle θ2 with respect to the vertical Z direction. The holder portion 42 is a portion that comes into contact with the nose NO of the observer, and expands flat in a direction substantially along the side of the nose NO, so that the contact area with the nose NO can be maximized.

The nose piece 40 includes: a metal core 40a that is a flexible metal plate; and a resin portion 40b that covers the core metal 40a. The mandrel 40a is formed of a plastically deformable metallic material such as SUS. Thereby, by bending the length adjustment member 41 of the nose support part 40, the shape can be permanently deformed so as to conform to the height and shape of the observer's nose. Specifically, by changing the angle θ1 to adjust the distance between the pair of holders 42 , it is possible to adjust the fitting state of the observer's nose NO with respect to the nose support 40 . In addition, by twisting and deforming the holder part 42, the fitting feeling to the nose NO can also be improved. In addition, the resin portion 40b of the support portion 42 of the nose support portion 40 has a certain degree of elasticity, and under the action of the certain degree of elasticity of the core bone 40a, it produces a small displacement in the lateral direction, so it is soft and soft with the nose NO of the observer. Touch, improved wearing comfort. In this way, the shape and contact state of the nose support portion 40 can be adjusted by deformation of the length adjustment member 41, etc., and thus the height and distance of the frame 107 or the light guide device 20 relative to the eyes EY can be adjusted in consideration of the wearing feeling. Fine adjustment is performed, so that the virtual image display device 100 can be worn according to the viewer's preference.

In addition, the nose piece 40 can also be replaced by loosening the screw 107s. There is also a limit to the adjustment by the length adjustment member 41 , but by replacing the nose support 40 , the adjustment range of the nose support 40 can be expanded.

The support portion 42 of the nose support portion 40 is supported by the nasal bone NB of the observer's nose NO in a sufficient area, which can stabilize the support of the light guide device 20 and reduce the burden on the nose NO. That is, with the above-mentioned structure of the nose support portion 40 , the wearing of the virtual image display device 100 is relatively comfortable. However, the support portion 42 of the nose support portion 40 is supported at a position corresponding to the lower part of the nasal bone NB, avoiding interference with the spectacle nose pad 9d supported on the upper part of the nasal bone NB close to the brow, so that it can be compatible with the spectacle nose. Glasses 9 of support 9d coexist.

Hereinafter, with reference to FIGS. 3A to 3D and the like, the auxiliary mounting member 3 detachably fixed to the main body 2 will be described. The auxiliary mounting member 3 is disposed in an inner space IS (see FIG. 4 ) formed between the frame portion 102 or the frame (beam portion) 107 and the face of the observer. The auxiliary mounting member 3 is provided with the frame-shaped internal frame 3z corresponding to the outline formed by combining a pair of optical member 101a, 101b. The inner frame 3z is formed of a resin material and has an outer shape similar to eyeglasses. The inner frame 3z includes a pair of annular edge portions 3a and a bridge portion 3b connecting the two edge portions 3a. The inner frame 3z has a left-right symmetrical shape, and a snap-fit type connecting portion 3h is provided on the bridge portion 3b disposed at the central portion CR2 of the inner frame 3z. Part 8 fits. The connecting portion 3h has a pair of protrusions 3e, and an inwardly facing claw 3f is formed at the tip of each protrusion 3e. The pair of claws 3f of the connecting portion 3h engages with a pair of groove-shaped recessed portions 8v formed on the side of the gap PQ (see FIG. 1 ) of the connecting portion 108g provided in the protecting portion 108 . Here, the pair of protrusions 3e that support the pair of claws 3f at the ends are flexible due to the material, and the claws 3f can be detached from the recesses 8v by increasing or decreasing the lateral distance between the two claws 3f by applying appropriate stress. As a result, by aligning the connection portion 3h of the inner frame 3z with the support portion 8 of the protector 108 and pressing the bridge portion 3b toward the support portion 8, the protrusion 3e of the connection portion 3h enters the gap PQ, The inner frame 3z is fixed to the protection part 108 by fitting both so that the support part 8 is sandwiched by the connection part 3h. Conversely, by pulling the bridge portion 3b of the inner frame 3z away from the support portion 8 , the connection portion 3h is separated from the support portion 8 , and the fixation of the inner frame 3z is released and separated from the protection portion 108 . That is, the inner frame 3z and the auxiliary mounting member 3 can be freely attached and detached by hand.

The auxiliary mounting part 3 or the inner frame 3z is relatively lightweight, and they are suspended from the support part 8 arranged in the space above the nose NO and supported on the central connection part 3h, so that the auxiliary mounting part 3 can be balanced left and right. and fixed in a stable state. In addition, since the inner frame 3z is arranged along the frame portion 102, a sense of unity with the main body 2 can be improved and a smart appearance can be secured. In addition, the connecting portion 3h provided on the inner frame 3z is contained in the outline of the bridge portion 3b when viewed from the front and rear, and follows the connecting portion 108g of the frame 107, so it is not conspicuous even when viewed from the front of the main body 2. Moreover, even if the auxiliary mounting member 3 is detached, the support portion 8 provided on the connecting portion 108g is inconspicuous in appearance.

A vision correction lens 3d is fixed to the edge 3a of the inner frame 3z. The vision correcting lens 3d may be a lens suitable for the eyesight of the observer, and the observer can observe a clear image that has been corrected and focused. In addition, in the case of this embodiment, the virtual image formed by the first and second image forming main parts 105a, 105b exists at infinity, and a myopic observer can observe it through the vision correction lens 3d of the auxiliary mounting part 3, etc. to the focused image. By preparing a plurality of auxiliary mounting members 3 and replacing the auxiliary mounting members 3, the virtual image display device 100 can be adapted to a plurality of observers with different eyesight. In particular, the distance between the optical axes of the pair of vision correction lenses 3d is not limited to the distance that coincides with the distance between the optic axes of the first and second image forming main parts 105a, 105b, but can be fixed to the inner frame 3z when it is fixed to the glasses. Similarly, it matches the user's eye width or interpupillary distance, so good images and external images can be observed. In this way, by performing vision correction based on the customer's individual optometry prescription, viewing and listening of video becomes safe. In addition, it is generally desirable that the difference between the distance between the optical axes of the pair of vision correction lenses 3d and the distance between the optic axes of the first and second image forming main parts 105a, 105b be 10mm or less.

For the vision correction lens 3d fixed on the internal frame 3z, in addition to anti-ultraviolet and anti-blue light, sunglass functions such as light reduction and coloring can also be added. Vision correcting lens 3d can be replaced with no degree, light-transmitting flat plate. At this time, the auxiliary mounting member 3 functions as simple sunglasses or the like against external light. In addition, the vision correction lens 3d may also be a lens whose power can be variably adjusted. In this case, even when a plurality of customers share the virtual image display device 100, it is possible to easily observe a good image.

In addition, the auxiliary mounting member 3 is disposed on the inner side of the frame portion 102 . Therefore, it is necessary to form a certain distance or more between the optical members 101a and 101b and the observer's eyes EY. That is, when the virtual image display device 100 is worn, an inner space IS (see FIG. 4 ) for arranging the auxiliary mounting member 3 is formed between the optical members 101a, 101b or the frame portion 102 and the observer's eyes EY. This inner space IS expands in layers along the optical members 101a and 101b. By making the inner space IS relatively wide, it is possible to leave room for the insertion of the auxiliary mounting member 3, but on the other hand, there is a tendency that when the distance between the eye EY and the optical members 101a, 101b is enlarged, it will feel uncomfortable. The viewing angle of virtual image display becomes narrow, and the optical components 101a and 101b become heavy. Therefore, in the inner space IS, it is desirable to reduce the thickness in the front and rear Z direction as much as possible while ensuring the arrangement space of the auxiliary mounting member 3 . As shown in FIG. 8C , the inner space IS can also be used as a space for arranging the glasses 9 instead of the auxiliary mounting member 3 . That is, the observer wearing the glasses 9 can wear the virtual image display device 100 while wearing the glasses 9 by detaching the auxiliary mounting member 3 from the virtual image display device 100 . In this case, the inner space IS has a thickness or a size capable of accommodating relatively various glasses shapes. In addition, the observer who has removed the glasses 9 wears the virtual image display device 100 to which the auxiliary mounting member 3 is attached.

Hereinafter, the cover member 4 as a cover which is detachably fixed to the main body 2 will be described with reference to FIGS. 2A and 8B . The cover member (shroud) 4 has an outline corresponding to the outline of the combination of the pair of optical components 101a, 101b, and covers both optical components 101a, 101b from the front side. The cover member 4 is formed of a light-shielding or light-absorbing resin material or the like, and includes a pair of lens portions 4a without diopters, and an intermediate portion 4b that supports both lens portions 4a. A snap-fit type connecting portion 4h is provided in an intermediate portion 4b arranged at a central portion of the cover member 4 , and the connecting portion 4h is fitted to the support portion 8 provided in the protecting portion 108 . The coupling portion 4h has a pair of protrusions 4e, and an inward claw 4f is formed at the tip of each protrusion 4e. Like the connecting portion 3h of the auxiliary mounting member 3 , the pair of claws 4f of the connecting portion 4h engage with a pair of groove-like recesses 8v formed on the side of the gap PQ of the connecting portion 108g provided in the protecting portion 108 . Here, the pair of protrusions 4e that support the pair of claws 4f at the ends are flexible, and by applying appropriate stress to increase or decrease the lateral distance between the two claws 4f, the claws 4f can be separated from the recesses 4v. As a result, by aligning the connection portion 4h of the cover member 4 in the state before mounting with the support portion 8 of the protector 108, and pressing the intermediate portion 4b toward the support portion 8, the protrusion 4e of the connection portion 4h The cover member 4 is fixed to the protection part 108 by entering into the clearance gap PQ, and fitting both so that the support part 8 may be sandwiched by the connection part 4h. Conversely, by pulling the intermediate portion 4b of the cover member 4 in the installed state to separate it from the support portion 8, the connecting portion 4h is separated from the support portion 8, and the fixation of the cover member 4 is released, and the protective portion is released. 108 separate. That is, the cover member 4 can be freely attached and detached by hand.

When the cover member 4 is attached to the main body 2, external light can be blocked or reduced, and the observer can clearly observe the virtual image formed by the first and second image forming main parts 105a, 105b. In addition, the cover member 4 can be attached and detached independently from the auxiliary mounting member 3 . That is, only the cover member 4 or the auxiliary mounting member 3 may be attached to the main body 2, or both the cover member 4 and the auxiliary mounting member 3 may be attached.

Hereinafter, the arrangement relationship among the main body 2 , the cover member 4 , and the auxiliary mounting member 3 constituting the virtual image display device 100 of FIG. 1 will be described. As shown in FIG. 8B corresponding to the CC arrow section of FIG. 8A, the cover part 4 and the auxiliary mounting part 3 are fixed on the protective part 108 of the main body 2 in a manner that does not interfere, and the nose support part 40 is configured as follows: It extends between the pair of edge portions 3 a through the front side of the connecting portion 3 h provided on the auxiliary mounting member 3 . As shown in FIG. 8C corresponding to the DD arrow cross section of FIG. 8A , the auxiliary mounting member 3 is arranged inside so as to be adjacent to the light guide device 20 or the optical members 101a and 101b. That is, since the adjustment member 41 is thin, it does not interfere with the nose piece 40 even if the auxiliary attachment member 3 is arranged. In addition, as described above, at the position of the auxiliary mounting member 3 , glasses 9 may be arranged instead of the auxiliary mounting member 3 as indicated by the dotted line in the figure. At this time, the bridge portion 9 a and the frame portion 9 b of the general eyeglasses 9 are arranged inside so as to be adjacent to the light guide device 20 . In addition, in order to avoid interference with the glasses 9 and the glasses nose pad 9d, the length adjustment member 41 of the nose support 40 and the like are arranged on the front side or in front of the glasses 9 and the glasses nose pad 9d. In particular, since the length adjustment member 41 is thin and the support portion 42 is arranged on the relatively lower side, it is easy to avoid interference with the eyeglass nose pad 9d. As shown in FIG. 8D corresponding to the EE arrow cross section of FIG. 8A , the cross-sectional dimension of the bracket portion 42 of the nose support portion 40 is relatively large, but it is arranged at a sufficient distance between the pair of edge portions 3a such as the inner frame 3z. inside.

As shown in FIGS. 9A and 9B , the light guide member 10 and the light transmission member 50 are fixed to each other to form an integrated light guide device 20 . The light guide device 20 is a translucent optical block-shaped or prism-shaped member that reflects light of an image inside and guides it to the observer's eyes. The main body portion surrounded by the peripheral portion in the light guide device 20 has an elliptical outline. Here, the light transmissive member 50 is arranged along the extension direction so as to be connected to the end side of the light guide member 10, that is, the first light guide part 11 on the exit side or the light exit side, and is bonded by using an adhesive. It is fixed to the first light guide part 11. The light guide device 20 formed by combining the light guide member 10 and the light transmission member 50 corresponds to the first optical member 101 a in FIG. 1 . As shown in FIG. 6B , a rib 10 n is formed near the upper side of the frame 107 in the peripheral portion of the light guide (optical component) 20 , and the rib 10 n is fitted into a restricting portion 107 n provided on the lower surface of the frame 107 . The displacement of the light guide device 20 in the depth direction (Z direction) is restricted by the presence of the first rib 10n.

Hereinafter, assembly of the first display device 100A to the frame 107 will be described with reference to FIGS. 10A , 10B and the like. The projection lens 30 constituting the first image forming main body 105a is directly fixed to the first fixing part 61f provided on the side end part 65a of the frame 107 by the mounting part 39g formed to be embedded in the lens barrel 39 . When fixing in this way, the back surface 68f of the first fixing part 61f abuts against the upper end surface of the mounting part 39g to achieve alignment, and by screwing the screw 61t into the mounting part 39g through the threaded hole 61s, it can be attached and detached reliably. fixed. At this time, the boss hole 61x of the frame 107 is fitted into the boss 39x provided on the lens barrel 39 to restrict the rotation of the lens barrel 39 and perform positioning with respect to the rotation. On the other hand, the light guide device 20 as the first optical member 101a is directly fixed to the second fixing part 61e provided on the side end part 65a of the frame 107 by the protrusion-shaped mounting part 10g formed on the neck thereof. The attachment portion 10g is erected so as to expand around the portion on the incident side or the light incident side of the light guide device 20 , specifically, the boundary periphery between the first light guide portion 11 and the second light guide portion 12 . When fixing in this way, the abutment surface 68e provided on the front side portion of the second fixing part 61e abuts against the back surface 10k of the mounting part 10g to achieve alignment, and the screw 61v is screwed into the screw hole 10u through the screw hole 10u. 61u, which can be reliably fixed in a detachable manner. In addition, the image display device 80 shown in FIG. 5 and the like is fixed so as to be fitted into the rear end of the lens barrel 39 of the projection lens 30 .

In the light guide device 20, the end portion 12j of the second light guide part 12 side of the light guide member 10 is fitted with a rectangular frame-shaped engaging member 39a provided on the front end side of the lens barrel 39 of the projection lens 30 and having an opening. Thus, it is locked in a positioned state with respect to the projection lens 30 . That is, when the light guide member 10 provided on the light guide device 20 is fixed to the second fixing portion 61e of the frame 107, the end portion 12j on the side of the second light guide portion 12 is inserted into the end portion 12j of the lens barrel 39 in a fitted manner. inside the engaging part 39a. At this time, the side surface 12m of the terminal part 12j abuts and aligns with the inner surface 39m of the engaging member 39a. Thereafter, as shown in FIGS. 6A and 7 , the protector 108 is fixed to the frame 107 by using the threaded hole 107r provided in the central portion 107g of the frame 107 and the seat portion 107q around it. At this time, as shown in FIGS. 7 and 11 , the nose piece 40 is fixed so that the fixed portion 43 of the nose piece 40 is sandwiched between the central portion 107 g and the connection portion 108 g. Through the above steps, an assembly of the frame 107, the projection see-through device 70, and the protection unit 108 can be obtained (see FIGS. 3A to 3D , etc.).

Thereafter, as shown in FIGS. 2A and 2B and the like, the exterior member 105 e among the exterior members 105 d is fixed to the assembly of the frame 107 and the projection see-through device 70 . The outer member 105 e is fixed by fitting with the frame 107 and the projection lens 30 , screwing to the mounting portion 39 g of the projection lens 30 , and the like. At this time, the end portions 108i, 108j of the protective portion 108 already fixed to the frame 107 are fitted and fixed to the recessed portion 105i formed in the outer member 105e. Next, the inner member 105f is fitted into the outer member 105e, and is fixed to the outer member 105e by screwing. Thus, in the space sandwiched by the inner member 105f and the outer member 105e, the base side of the projection lens 30 and the light guide device 20 constituting the first image forming main body 105a, the image display device 80, and the frame 107 are accommodated. A part of side part 107b, 107c.

The leg part 104 is fixed in a hole 107t provided at the end of a pair of side parts 107b, 107c provided on the frame 107 (see FIG. 10A etc.). The connecting part of the heel part 104 and the side parts 107b and 107c may have a hinge structure, and in this case, the heel part 104 may be folded.

In addition, since the second display device 100B shown in FIG. 1 has the same structure as the first display device 100A, only the first display device 100A is reversed symmetrically, so the structure, functions and details of the second display device 100B are omitted. Instructions for assembly, etc.

Details of functions, operations, etc. of the projection see-through device 70 and the like will be described with reference to FIG. 12 . The light guide member 10 that is a part of the light guide device 20 in the projection see-through device 70 is an arc-shaped member that curves along the face in plan view. In the light guide member 10, the first light guide part 11 is disposed near the central side of the nose, that is, on the light emitting side, and has a first surface S11, a second surface S12, and a third surface S13 as side surfaces having optical functions, and the second surface S11 has optical functions. The light guide part 12 is arranged on the peripheral side away from the nose, that is, on the light incident side, and has a fourth surface S14 and a fifth surface S15 as side surfaces having optical functions. Among them, the first surface S11 is continuously adjacent to the fourth surface S14, and the third surface S13 is continuously adjacent to the fifth surface S15. Moreover, the 2nd surface S12 is arrange|positioned between the 1st surface S11 and the 3rd surface S13, and it adjoins so that it may form a large angle between the 4th surface S14 and the 5th surface S15.

In the light guide member 10, the first surface S11 is a free-form surface with the output-side optical axis AXO parallel to the Z-axis as the center axis, and the second surface S12 is a reference plane included in the XZ plane (the cross-section shown in the figure). ) and the optical axis AX1 inclined relative to the Z axis is a free-form surface with the central axis, and the third surface S13 is a free-form surface with the exit-side optical axis AXO as the central axis. The fourth surface S14 is a free curved surface with the parallel optical axis AX5 as the central axis, wherein the optical axis AX5 is included in the above-mentioned reference plane parallel to the XZ plane and is slightly inclined with respect to the bisector of the pair of optical axes AX3 and AX4 , the pair of optical axes AX3 and AX4 are inclined relative to the Z axis, and the fifth surface S15 is bisected by the pair of optical axes AX4 and AX5 included in the above-mentioned reference plane parallel to the XZ plane and inclined relative to the Z axis A free-form surface with a line as the central axis. In addition, the above-mentioned first to fifth surfaces S11 to S15 have a symmetrical shape with respect to the vertical (or longitudinal) Y-axis direction across the reference plane (shown cross-section) through which the optical axes AX1 to AX5 and the like pass. The reference plane extends horizontally (or laterally) and is parallel to the XZ plane.

The main body 10s of the light guide member 10 is formed of a resin material exhibiting high light transmittance in the visible region, and is molded, for example, by injecting a thermoplastic resin into a mold and curing it. Moreover, as a material of the main body 10s, cycloolefin polymer etc. can be used, for example. The main body 10s is integrally formed, but it is also conceivable to divide the light guide member 10 into the first light guide part 11 and the second light guide part 12 . The first light guide portion 11 can guide and emit the image light GL, and can see through the external light HL. The second light guide portion 12 can realize incident and waveguiding of the image light GL.

In the first light guide part 11, the first surface S11 functions as a refraction surface that emits the image light GL out of the first light guide part 11, and also serves as a total reflection surface that totally reflects the image light GL on the inner surface side. function. The first surface S11 is arranged in front of the eye EY, and is formed in a concave shape with respect to the observer. In addition, the first surface S11 is a surface formed of the hard coat layer 27 applied to the surface of the main body 10s.

The second surface S12 is the surface of the main body 10s, and the half mirror layer 15 is attached to this surface. The half mirror layer 15 is a light-transmitting reflective film (that is, a semi-transparent reflective film). The half mirror layer (semi-transmissive reflection film) 15 is not formed on the whole of the second surface S12, but is formed on a partial area PA which is mainly along the vertical direction of the Y axis on the second surface S12. direction of the narrow region (see Figure 9A). The half mirror layer 15 is formed by forming a metal reflective film or a dielectric multilayer film on a partial area PA of the base surface of the main body 10s. From the viewpoint of making it easier to see through the external light HL, the reflectance of the half mirror layer 15 with respect to the image light GL is 10% to 50% of the assumed incident angle range of the image light GL. In a specific embodiment, the reflectance of the half mirror layer 15 to the image light GL is set to 20%, for example, and the transmittance to the image light GL is set to 80%, for example.

The third surface S13 functions as a total reflection surface that totally reflects the image light GL on the inner surface side. The third surface S13 is arranged in front of the eyes EY, and like the first surface S11, has a concave shape with respect to the observer, and has a diopter of approximately 0 when the external light HL is observed through the first surface S11 and the third surface S13. In addition, the third surface S13 is a surface formed by the hard coat layer 27 applied to the surface of the main body 10s.

In the second light guide portion 12, the fourth surface S14 functions as a total reflection surface that totally reflects the image light GL on the inner surface side. The fourth surface S14 also functions as a refraction surface for making the image light GL incident into the second light guide portion 12 . In addition, the fourth surface S14 is a surface formed by the hard coat layer 27 applied to the surface of the main body 10s.

In the second light guide portion 12, the fifth surface S15 is formed by forming a light reflection film RM made of an inorganic material on the surface of the main body 10s, and functions as a reflection surface.

The light transmission member 50 is fixed integrally with the light guide member 10 as described above to form one light guide device 20 . The light transmissive member 50 is a member that assists the see-through function of the light guide member 10 (auxiliary optical module), and has a first transmissive surface S51, a second transmissive surface S52, and a third transmissive surface S53 as side surfaces having optical functions. Here, the second transmission surface S52 is disposed between the first transmission surface S51 and the third transmission surface S53. The first transmissive surface S51 is located on a curved surface extending the first surface S11 of the light guide member 10, the second transmissive surface S52 is a curved surface integrated with the second surface S12 by bonding the adhesive layer CC, and the third The transmissive surface S53 is located on a curved surface extending the third surface S13 of the light guide member 10 . Among them, since the second transmissive surface S52 and the second surface S12 of the light guide member 10 are integrated by bonding through the thin adhesive layer CC, they have shapes with substantially the same curvature.

The light transmissive member (auxiliary optical module) 50 exhibits high light transmittance in the visible region, and its main body is formed of a thermoplastic resin material having substantially the same refractive index as the main body 10s of the light guide member 10 . In addition, the light-transmitting member 50 is formed such that after the main body portion is bonded to the main body 10s of the light guide member 10 , film formation by hard coating is performed together with the main body 10s in the bonded state. That is, the light-transmitting member 50 has the hard coat layer 27 applied to the surface of the main body similarly to the light-guiding member 10 . The first transmissive surface S51 and the third transmissive surface S53 are surfaces formed by the hard coat layer 27 applied to the surface of the main body.

The image display device 80 includes: an illumination device 81 that emits illumination light; an image display element 82 that is a transmissive spatial light modulation device;

The illuminating device 81 of the image display device 80 has: a light source (not shown) that generates light including three colors of red, green, and blue; . The image display element 82 is an image element formed of, for example, a liquid crystal display device, and spatially modulates the illumination light from the illumination device 81 to form image light to be displayed as a moving image or the like. The drive control unit 84 includes a light source drive circuit 84a and a liquid crystal drive circuit 84b. The light source drive circuit 84a supplies electric power to the lighting device 81 to emit lighting light with stable brightness. The liquid crystal drive circuit 84b outputs an image signal or a drive signal to the video display element (video element) 82 to form color video light or image light as a transmittance pattern that forms the basis of a moving picture or a still picture. In addition, although the liquid crystal drive circuit 84b may have an image processing function, an external control circuit may also have an image processing function.

Hereinafter, optical paths of the video light GL and the like in the virtual image display device 100 will be described. The image light GL emitted from the image display element (image element) 82 is condensed by the projection lens 30, and then incident on the light guide member 10 having positive refractive power (refractive power) (hereinafter, converted into a refractive surface to represent the The focal power of the reflective surface) of the fourth surface S14.

The image light GL passing through the fourth surface S14 of the light guide member 10 is converged and advances, and when passing through the second light guide part 12, it is reflected by the fifth surface S15 having a relatively weak positive refractive power, and then from the inside It is incident on the fourth surface S14 again, receives positive optical power and is reflected.

The image light GL reflected by the fourth surface S14 of the second light guide part 12 enters the third surface S13 having a relatively weak positive refractive power in the first light guide part 11 and is totally reflected, and enters the Total reflection occurs on the first surface S11 having relatively weak negative refractive power. In addition, the image light GL forms an intermediate image in the light guide member 10 before and after passing through the third surface S13. The image plane II of the intermediate image corresponds to the image plane OI of the video display element 82 .

The image light GL totally reflected by the first surface S11 is incident on the second surface S12, and in particular, the image light GL incident on the half mirror layer 15 is partially transmitted through the half mirror layer 15 and partly reflected to enter again. To the first surface S11 and pass through the first surface S11. In addition, the half mirror layer 15 functions as a structure having relatively strong positive refractive power with respect to the image light GL reflected here. In addition, the first surface S11 functions as a structure having negative refractive power with respect to the image light GL passing through the first surface S11.

The image light GL having passed through the first surface S11 enters the pupil of the observer's eye EY or its equivalent position as a substantially parallel light beam. That is, the observer observes the image formed on the video display element (video element) 82 with the video light GL which is a virtual image.

On the other hand, in the external light HL, the light incident on the -X side of the second surface S12 of the light guide member 10 passes through the third surface S13 and the first surface S11 of the first light guide part 11, but at this time , the positive and negative optical powers are offset and the aberrations are corrected. That is, the observer observes an external image with less distortion through the light guide member 10 . Similarly, in the external light HL, the light incident on the +X side of the second surface S12 of the light guide member 10, that is, the light incident on the light transmission member 50 passes through the third transmission surface S53 and the second surface S53 provided there. When 1 transmits the surface S51, the positive and negative optical powers are offset and the aberration is corrected. That is, the observer observes an external image with less distortion through the light transmission member 50 . In addition, in the external light HL, when the light incident on the light transmission member 50 corresponding to the second surface S12 of the light guide member 10 passes through the third transmission surface S53 and the first surface S11, the positive and negative refractive powers are offset and Aberrations are corrected. That is, the observer observes an external image with less distortion through the light transmitting member 50 . In addition, both the second surface S12 of the light guide member 10 and the second transmissive surface S52 of the light transmissive member 50 have approximately the same curved surface shape, and both have approximately the same refractive index, and the gap between the two is formed by a material having approximately the same refractive index. Adhesive layer CC filled. That is, the second surface S12 of the light guide member 10 and the second transmission surface S52 of the light transmission member 50 do not function as substantially refraction surfaces with respect to the external light HL.

However, since a part of the external light HL incident on the half mirror layer 15 passes through the half mirror layer 15 and partly is reflected, the external light HL from the direction corresponding to the half mirror layer 15 is transmitted by the half mirror layer. The transmittance of 15 is weakened. On the other hand, since the image light GL is incident from the direction corresponding to the half mirror layer 15, the observer observes the image formed on the image display element (image element) 82 and the outside world in the direction of the half mirror layer 15. picture.

Of the image light GL that propagates in the light guide member 10 and is incident on the second surface S12, the light that is not reflected by the half mirror layer 15 enters the light transmission member 50. The antireflection part shown in the figure prevents it from returning to the light guide member 10 . That is, the image light GL passing through the second surface S12 is prevented from returning to the optical path and becoming stray light. In addition, although the external light HL incident from the side of the light-transmitting member 50 and reflected by the half mirror layer 15 returns to the light-transmitting member 50, it is prevented from being emitted by the above-mentioned unillustrated anti-reflection part provided on the light-transmitting member 50. to the light guide member 10. That is, it prevents the external light HL reflected by the half mirror layer 15 from returning to the optical path and becoming stray light.

As clear from the above description, according to the virtual image display device 100 of this embodiment, since the supporting nose piece 40 is fixed to the frame portion 102, it is arranged at a position where it does not interfere with the eyeglass nose pad 9d provided on the eyeglasses 9. Therefore, the observer wearing the glasses 9 can wear the virtual image display device 100 in addition to the glasses, and can observe the image formed by the video display element (image element) 82 well without blurring. In addition, the nose support part 40 has the core bone 40a and the resin part 40b covering the core bone 40a, thereby increasing the degree of freedom in the shape of the nose support part 40 and improving its strength, and the nose support part 40 can be arranged in a space-saving manner. And ensure coexistence with Spectacles 9.

As mentioned above, although this invention was demonstrated with reference to embodiment, this invention is not limited to said embodiment, It can implement in various forms in the range which does not deviate from the summary, For example, the following deformation|transformation is also possible.

The holder portion 42 of the nose support portion 40 may be a detachable separate component. In this case, it is also possible to replace the holder portion 42 and change the size and arrangement.

The nose piece 40 can also consist of a single bracket 42 . In this case, the single support portion 42 is supported on the nose so as to be in contact with the bridge of the nose (specifically, the portion from the back of the nose to the base of the nose) and both side surfaces of the bridge of the nose.

The length adjusting member 41 of the nose piece 40 is not limited to extending linearly in a rod shape, but may be bent or bent so as to avoid interference with other members or the like.

The resin portion 40b of the nose support portion 40 has a shape having as large a contact portion as possible so that a large load is not applied to the contact portion due to contact with the nose. As a material of the resin part 40b, silicone gel, soft PVC (polyvinyl chloride), PC (polycarbonate), etc. can be used.

The connection parts 3h and 4h for fixing the auxiliary mounting member 3 and the like to the main body 2 are not limited to the snap-fit type, and may be clamped and fixed using a spring or other various methods. For example, in the case of personal use only, the auxiliary mounting member 3 may be screwed to the frame portion 102 because replacement is infrequent. In addition, the auxiliary mounting part 3 may be supported by a groove or other holding part provided on the protective part 108 or the frame 107, or a fixing member such as a fork provided on the auxiliary mounting part 3 may be properly opposed to the protective part 108 or the frame 107. The positions are snapped to support the auxiliary installation part 3 .

In the above embodiment, the frame 107 and the projection lens 30 are screwed separately to fix the projection lens 30 to the frame 107 , but the lens barrel 39 of the projection lens 30 and the frame 107 may be formed integrally. As a method of integrally molding the lens barrel 39 and the frame 107 , there are techniques such as injection molding on a substrate, compression molding, and then cutting out the lens barrel portion.

As for the light guide device 20 or the projection lens 30 , they are not limited to fastening by screw fastening, but can be fixed to the frame 107 by various methods.

The frame portion 102 is not limited to the shape illustrated in the embodiment or the appearance similar to a spectacle frame, but may have various shapes capable of bridging the projection lens 30 and the light guide device 20 . For example, the protector 108 may be omitted, and in this case, the frame 107 functions solely as a supporting frame. In addition, the protection part 108 side may have a function of a holding part or a supporting part for holding the light guide device 20 and the like. In this case, the protection part 108 functions solely as a supporting frame part.

In the above embodiments, the projection lens 30 is disposed on the light incident side of the light guide member 10 , but the projection lens 30 may be omitted and the light guide member 10 itself has an imaging function. In addition, another light guide member 10 having an imaging function may also be configured instead of the projection lens 30 .

In the above-described embodiment, the lens barrel 39 of the projection lens 30 is provided with an engaging member 39a that engages with the light guide device 20, but it may be provided on the light guide device 20 side, for example, to sandwich the lens barrel 39 with the mirror. An engaging member for fitting the cylinder 39 .

In the above-mentioned embodiments, the half mirror layer (semi-transmissive reflection film) 15 is formed in a laterally long rectangular area, but the outline of the half mirror layer 15 can be appropriately changed according to the application or other specifications. In addition, the transmittance and reflectance of the half mirror layer 15 can also be changed depending on the application or other factors.

In the above embodiments, the half mirror layer 15 is a simple semitransparent film (for example, a metal reflective film or a dielectric multilayer film), but the half mirror layer 15 may be replaced by a flat or curved hologram element.

In the above-described embodiment, the distribution of display luminance of video display element 82 is not particularly adjusted, but it is possible to adjust the distribution of display luminance to be non-uniform when, for example, a difference in luminance occurs depending on the position.

In the above-mentioned embodiment, the image display device 82 composed of a transmissive liquid crystal display device or the like is used as the image display device 80, but the image display device 80 is not limited to the video display device composed of a transmissive liquid crystal display device or the like. 82, and various structures can be utilized. For example, a reflective liquid crystal display device may be used, or a digital micromirror device or the like may be used instead of the image display element 82 composed of a liquid crystal display device or the like. In addition, as the image display device 80 , a self-luminous type element typified by an LED array, an OLED (organic EL), or the like can be used.

In the above-described embodiment, the image display device 80 constituted by a transmissive liquid crystal display device or the like is used, but a scanning-type image display device may be used instead of the image display device.

Specifically, as shown in FIG. 13 , a first display device 100A as a virtual image display device includes a light guide device 20 and an image display device 380 . The light guide device 20 is the same as the above-mentioned light guide device, and its description is omitted here. On the other hand, the image display device 380 has a signal light forming unit 381 and a scanning optical system 282 . The signal light forming unit 381 further includes a light source that forms and emits the signal light LL. The scanning optical system 282 adjusts the optical path by changing its attitude while the signal light forming unit 381 is being modulated, thereby making the scanning light TL to be the image light GL incident on the light guide device 20, and forming an image on the second surface S12. The entire partial area of the half mirror layer 15 is scanned. The operation of the illustrated first display device 100A will be described. In the image display device 380 , the signal light LL emitted from the signal light forming unit GG enters the scanning optical system 282 . The scanning optical system 282 emits the signal light LL as scanning light TL toward the light guide device 20 . The light guide device 20 internally guides the scanning light TL incident from the sixth surface S16 by total reflection on the first to fifth surfaces S11 to S15 , and makes the light reach the half mirror layer 15 . At this time, the scanning light TL scans the surface of the half mirror layer 15 to form a virtual image by the video light GL that is the trajectory of the scanning light T1, and the wearer captures the virtual image with the eyes EY to recognize the image. In addition, in the illustrated case, the sixth surface S16 which is the light incident surface in the light guide device 20 is a plane perpendicular to the optical axis of the scanning light TL. In addition, the fifth surface S15 and the fourth surface S14 are also flat surfaces.

In the above description, the virtual image display device 100 including the pair of display devices 100A and 100B has been described, but a single display device may also be used. That is, it may also be configured such that instead of providing a set of projection see-through device 70 and image display device 80 corresponding to both the right eye and the left eye, the projection see-through device 70 and image display device 80 are provided only for either the right eye or the left eye. display device 80 so that images can be viewed with one eye. In this case, the frame 107 and the heel part 104 have the shape arrange|positioned bilaterally symmetrically in the state shown in FIG. 1 etc., for example. The auxiliary mounting member 3 and the cover member 4 may be arranged on only one side corresponding to the projection see-through device 70 and the like, but it is natural to arrange them for both eyes.

In the above description, the distance between the pair of display devices 100A, 100B in the X direction is not described, but the distance between the two display devices 100A, 100B is not limited to be fixed, and the distance can also be adjusted by mechanical mechanisms or the like. That is, if a telescoping mechanism or the like is provided on the frame 107, the distance between the two display devices 100A, 100B in the X direction can be adjusted according to the wearer's eye width or the like.

In the above-mentioned embodiment, on the first surface S11 and the third surface S13 of the light guide member 10, processing such as a mirror surface or a half mirror is not performed on the surface, but the image light is totally reflected by the interface with the air. However, the total reflection of the virtual image display device 100 of the utility model of the present application also includes the reflection in which a mirror coating or a half mirror film is formed on the whole or part of the first surface S11 or the third surface S13. For example, it also includes the case where the incident angle of image light satisfies the condition of total reflection, and the whole or part of the first surface S11 or the third surface S13 is mirror-coated to reflect substantially all the images. Light. In addition, if video light with sufficient brightness can be obtained, the whole or part of the first surface S11 or the third surface S13 may be coated with a slightly transmissive mirror.

In the above description, the light guide member 10 and the like extend in the lateral direction in which the eyes EY are arranged, but they may be arranged so that the light guide member 10 extends in the longitudinal direction. At this time, the light guide member 10 is supported, for example, in a cantilever state at the upper part.

Claims (12)

1. a virtual image display apparatus, is characterized in that, described virtual image display apparatus possesses:

Image element;

Optics, it is configured in observer at the moment, and makes the eyes towards observer from the light of described image element, makes observer's eyes visual to image;

Frame portion, it supports described image element and described optics, and described frame portion is wearing the inner space that is formed for configuring glasses under state; And

Nose support part, it has the resin portion of arbor and coated this arbor, and described nose support part is fixed on described frame portion and is configured in not the position interfering with the spectacles nose holder that is arranged at glasses, and described nose support part is by supporting described frame portion with nose butt.

2. virtual image display apparatus according to claim 1, is characterized in that,

Described arbor is formed by metal material that can plastic yield.

3. virtual image display apparatus according to claim 1 and 2, is characterized in that,

Described frame portion is fixed on by screw threads for fastening in described nose support part.

4. virtual image display apparatus according to claim 1 and 2, is characterized in that,

Described nose support part has holder portion in the lower end of the parts of upper downward-extension.

5. virtual image display apparatus according to claim 4, is characterized in that,

Described holder portion is configured in than the described spectacles nose holder position of side on the lower.

6. virtual image display apparatus according to claim 1 and 2, is characterized in that,

Described frame portion has: framework, and it supports described optics; With protection portion, the part that it is fixed on described framework and protects described optics.

7. virtual image display apparatus according to claim 6, is characterized in that,

The join domain of described framework and described protection portion is fixed in described nose support part.

8. virtual image display apparatus according to claim 6, is characterized in that,

Described framework has the face portion of linearly extension, and described protection portion is configured in the below of described framework to clip the mode of described optics, and described protection portion has the connecting portion of the V word shape being connected with the central portion of described face portion in central authorities.

9. virtual image display apparatus according to claim 1 and 2, is characterized in that,

Described virtual image display apparatus also possesses from described frame portion and extends out and be supported on a pair of pin silk portion of ear.

10. virtual image display apparatus according to claim 1 and 2, is characterized in that,

Described optics has the guiding device of optics bulk, and described guiding device has transmitance, and described guiding device reflects and guide to observer's eyes to the light of the image of the image display element from as described image element in inside.

11. virtual image display apparatus according to claim 10, is characterized in that,

Described guiding device has: light guide member, the perspective that it carries out leaded light and can realize extraneous light the light of image; And light transmission department part, itself and this light guide member is connected, for supplementing the perspective function of extraneous light.

12. virtual image display apparatus according to claim 1 and 2, is characterized in that,

Described image element penetrates the flashlight that carries out two-dimensional scan, and described optics reflects the light from described image display element and guides to observer's eyes.