JP2023153492A - Head-mounted type loupe - Google Patents

Abstract

To provide a head-mounted type loupe that can match imaging with a view line of a wearer, and can magnify a deep hole or a deep part of a small hole of an aperture diameter accurately and stably.SOLUTION: A head-mounted type loupe comprises: a convergence angle contraction member that has a pair of right and left first view line refractive members 22 and 22 refracting right and left view lines S and S to an inner side respectively, and a pair of right and left second view line refractive members 24 and 24 refracting forward each of view lines S and S refracted by the first view line refractive members 22 and 22; and further an optical axis refractive member 32 that is disposed between a magnifier 5 and the second view line refractive members 24 and 24, transmits forward each of the view lines S and S refracted by the second view line refractive members 24 and 24, refracts an optical axis of a camera member, and matches the optical axis thereof with one view line S. According to this configuration, a convergence angle θ of the view lines S and S can be made small, and thus, a deep part 62 of a deep hole 61 can be magnified, and the deep part 62 can be imaged with an eye line of a wearer.SELECTED DRAWING: Figure 6

Description

The present invention relates to a head-mounted loupe that is mounted on the wearer's head and allows the wearer to view an object in an enlarged manner.

For example, Patent Document 1 proposes a binocular loupe that is mainly applied in the medical field. This binocular loupe is worn on the wearer's head so that the wearer can see an object in a magnified view, and is further provided with a camera for photographing the object. According to this configuration, when a surgeon wears the camera and performs a surgery, the camera can capture an image of an object that the surgeon is viewing, and display or record the image.

Japanese Patent Application Publication No. 2003-204972

In the conventional configuration disclosed in Patent Document 1 mentioned above, the wearer views the object in an enlarged manner through lenses located in front of the left and right eyes, so it is extremely difficult to view a relatively widely exposed area. While convenient, for example, when viewing a deep hole or a hole with a small opening diameter, it is difficult to focus on the deep part of the hole, making it difficult to see the deep part. Therefore, in order to see the deep part of such a hole, it was necessary to see with only one eye, but when using only one eye, there was a problem that it was difficult to see the object three-dimensionally.

Furthermore, in the conventional configuration of Patent Document 1 mentioned above, since the camera is disposed above the magnifying glass, the optical axis of the camera from the camera lens to the object is directed through the magnifying glass to view the object. Does not match the wearer's line of sight. As a result, the wearer's line of sight and the image captured by the camera may be misaligned, and it may not be possible to accurately convey the situation the wearer is viewing.

The present invention provides a head-mounted loupe that is capable of capturing an image that matches the line of sight of the wearer, and that can accurately and stably magnify the deep part of a deep hole or a hole with a small opening diameter.

The present invention provides a head-mounted part that is mounted on the head of a wearer, and a state in which the head-mounted part is attached to the head-mounted part and is mounted on the head of the wearer. A head-mounted loupe is equipped with a magnifying glass placed in front of the wearer's eyes and is capable of magnifying an object. a pair of left and right first line of sight refracting members that respectively refract the lines inward, and left and right lines of sight that are respectively arranged between the left and right first line of sight refracting members behind the magnifying glass and refracted by the first line of sight refracting members. a pair of left and right second line-of-sight refracting members that refract the line of sight forward; an optical axis refracting member disposed between the magnifying glass and the second visual axis refracting member, further comprising a convergence angle reduction means that reduces the convergence angle by the left and right visual lines that do not go through the second visual line refracting member; and a camera member capable of capturing a still image or a moving image of the object via the optical axis refracting member, the optical axis refracting member passing forward the line of sight refracted by the second line of sight refracting member. The object is made visible through the magnifying glass, and the optical axis of the camera member is refracted so that the refracted optical axis coincides with one of the right and left lines of sight of the wearer. This is a head-mounted magnifying glass that is characterized by:

In such a configuration, since the convergence angle between the left and right lines of sight is reduced by the convergence angle reduction means, the line of sight can easily pass through deep holes or holes with small opening diameters, so that the deep parts of these holes can be viewed in an enlarged manner. Since the deep part can be viewed with both the left and right eyes, the deep part (object) can be viewed three-dimensionally. As described above, according to the configuration of the present invention, it is possible to accurately and stably magnify the deep part of a deep hole or a hole with a small opening diameter.

Further, in the configuration of the present invention, since the optical axis of the camera member coincides with the line of sight whose convergence angle is reduced by the convergence angle reducing means, images can be taken from the wearer's line of sight. Thereby, the person viewing the image captured by the camera member can visually recognize the object with the same line of sight as the wearer, making it easier to accurately understand the situation the wearer is viewing. According to the configuration of the present invention, when the wearer visually recognizes the deep part (object) of a deep hole or a hole with a small opening diameter, another person can use the same line of sight as the wearer through imaging by the camera member. The deep part can be visually recognized.

In the above-mentioned head-mounted loupe of the present invention, the optical axis refracting member is a cubic prism made by integrating two right-angled prisms with their slopes superimposed on each other, and the optical axis refracting member is a cubic prism that is integrated with the left and right second line of sight refracting members. A configuration is proposed in which the left and right cubic prisms are arranged symmetrically in front, and the left and right lines of sight respectively refracted by the second line of sight refracting members are passed forward by the left and right cubic prisms.

Here, the two cubic prisms constituting the optical axis refraction member include two surfaces through which the line of sight refracted by the second line of sight refraction member of the convergence angle reduction means (a surface facing the magnifying glass and a surface opposite to the surface) are used. It is preferable to apply an anti-reflection coating to the camera member (the surface facing the camera lens) and the surface of the camera member facing the camera lens, and to apply a black coating to the remaining three surfaces to suppress the input and output of light.

In such a configuration, the optical axis refracting member is a so-called beam splitter, and can split light incident from the front surface into transmitted light that passes through the rear surface and reflected light that is reflected on the slope and directed toward the side surface. Since the wearer receives the transmitted light by the optical axis refracting member and the camera member receives the reflected light, the wearer's line of sight and the line of sight axis of the camera member can be aligned. The above-mentioned effect of the present invention, in which the image is taken from the wearer's perspective, can be stably exhibited.

Furthermore, in this configuration, since the two cubic prisms are arranged symmetrically, the left and right lines of sight can pass through each three-dimensional prism in the same way. Thereby, the target object can be visually recognized more accurately and stably.

According to the head-mounted loupe of the present invention, the camera member can take an image from the same line of sight as the wearer, and the deep part of a deep hole or a hole with a small opening diameter can be viewed accurately and stably. This makes it possible to image the deep part of a deep hole or a hole with a small opening from the same line of sight as the wearer.

FIG. 1 is a perspective view showing a head-mounted magnifying glass 1 according to an embodiment. (A) A side view showing the head-mounted loupe 1 in a usage state and (B) in a standby state. They are (A) a perspective view from the front and (B) a perspective view from the rear, showing the convergence angle reduction member 3, the visible object imaging member 4, and the magnifying glass 5 separately. They are (A) a perspective view and (B) an exploded perspective view of an optical axis refraction member 32. They are (A) a plan view and (B) a perspective view illustrating the positional relationship among the magnifying glass 5, the optical axis refracting member 32, and the convergence angle reducing member 3. FIG. 3 is an explanatory diagram showing (A) lines of sight S, S through the convergence angle reducing member 3, and (B) lines of sight S', S' through the binocular loupe 101 of a conventional configuration. 3 is an explanatory diagram showing the wearer's line of sight S, S and the line of sight axis P of the camera member 33 in the head-mounted loupe 1. FIG.

Embodiments embodying the present invention will be described with reference to the accompanying drawings. In the embodiment, the front-back direction indicates the front-back direction of the wearer who wears the head-mounted loupe 1 of the embodiment, and the left-right direction similarly indicates the left-right direction of the wearer. The direction from the left and right outside toward the center of the wearer in the left-right direction is defined as inward. Furthermore, in the embodiments, the terms "front" and "front" are used interchangeably.

As shown in FIGS. 1 and 2, the head-mounted loupe 1 of the embodiment includes a head belt portion 2 that is worn on the wearer's head, and a connecting member 7 connected to the center of the head belt portion 2. It includes a convergence angle reducing member 3 attached, a visible object imaging member 4 attached to the convergence angle reducing member 3, and a magnifying glass 5 fixed to the visible object imaging member 4. Here, the head belt section 2 corresponds to the head mounting section according to the present invention.

The magnifying glass 5 of this embodiment is of a binocular type formed into a substantially rectangular plate shape, and a conventionally known configuration can be applied thereto.

The connecting member 7 includes a base portion 11 fixed to the head belt portion 2, a movable portion 12 rotatably provided on the base portion 11, and a mounting portion rotatably provided on the distal end of the movable portion 12. 13, and the convergence angle reducing member 3 is fixed to the mounting portion 13. The movable part 12 includes a first piece (not shown) rotatably attached to the base 11 and a second piece (not shown) rotatably attached to the mounting part 13. This is a movable configuration. With such a connecting member 7, the convergence angle reducing member 3 can be rotated in the vertical direction. In this embodiment, since the convergence angle reducing member 3, the visible object imaging member 4, and the magnifying glass 5 are integrally arranged, they can be integrally rotated in the vertical direction by the connecting member 7. I can move. Further, in this embodiment, a light member 14 is disposed on the mounting portion 13. This light member 14 can illuminate an object that the wearer sees through the magnifying glass 5, thereby improving the visibility of the object. Note that an ON/OFF switch, a power source, and the like (not shown) are connected to the light member 14 via a cable.

In this way, the head-mounted magnifying glass 1 of this embodiment has the use position (see Fig. 2(A)) and a standby position (FIG. 2(B)) which is tilted based on the information of the use position. Here, since the connecting member 7 is configured to be rotatable in the vertical direction via the first piece and the second piece as described above, the convergence angle reducing member 3, etc. It can be placed in an appropriate usage position depending on the wearer.

Next, main parts of the present invention will be explained.
As shown in FIG. 3, the convergence angle reducing member 3 includes a substantially rectangular parallelepiped-shaped housing 21 that is long in the left-right direction, first line-of-sight refracting members 22, 22, and a second line-of-sight refracting member disposed inside the housing 21. It includes line of sight refracting members 24, 24. The housing 21 includes connecting protrusions 26, 26 connected to the attachment part 13 of the connecting member 7, and has a first front window 27 opened at the center of the front surface of the housing 21. First rear window portions 28, 28 are formed near the left and right ends of the rear surface of the housing 21, respectively.

The first line-of-sight refracting members 22, 22 are substantially flat plates with one surface as a mirror surface, and are tilted inwardly and forwardly at a predetermined angle with each mirror surface facing backward (see FIG. 5). are arranged symmetrically at positions facing the first rear window portions 28, 28, respectively.

The second line of sight refracting members 24, 24 are substantially flat plates with one surface as a mirror surface, and each mirror surface is tilted inwardly and forwardly at a predetermined angle with each mirror surface facing forward (see FIG. 5). are arranged symmetrically at positions facing the first first front window portion 27. The present embodiment includes an integrated refraction member 23 in which the left and right second line of sight refraction members 24 are integrated into a substantially V-shape in plan view. This integrated refracting member 23 is arranged such that the second visual line refracting member 24 on the left side and the first visual line refracting member 22 near the left end of the housing 21 face each other, and the second visual line refracting member 24 on the right side faces each other. The second line-of-sight refraction member 24 and the first line-of-sight refraction member 22 near the right end of the housing 21 are arranged with their mirror surfaces facing each other.

In such a convergence angle reduction member 3, the angle at which the light refracted by the first line-of-sight refraction member 22 and the second line-of-sight refraction member 24 exits from the second line-of-sight refraction member 24 (the angle with respect to the front-rear direction) is The inclination angle of the first line-of-sight refraction members 22, 22 and the inclination angle of the second line-of-sight refraction members 24, 24 (integrated refraction member 23) are set so that the angle of incidence on the first line-of-sight refraction member 22 is smaller than the angle of incidence on the first line-of-sight refraction member 22. are set respectively. As a result, the convergence angle θ due to the left and right lines of sight S, S when looking through the left and right first rear windows 28 of the convergence angle reduction member 3 is the same as the left and right line of sight S when the convergence angle reduction member 3 is not used. ', S' is smaller than the convergence angle θ' (see FIG. 6).

Note that the convergence angle reducing member 3 of this embodiment corresponds to the convergence angle reducing means according to the present invention.

On the other hand, as shown in FIG. 3, the visible object imaging member 4 includes a substantially rectangular parallelepiped-shaped housing 31 that is long in the left-right direction, an optical axis refracting member 32 disposed inside the housing 31, and an optical axis refracting member 32 disposed inside the housing 31. A camera member 33 is provided on the left side of the refractive member 32. A second rear window section 38 having substantially the same shape as the first front window section 27 is formed on the rear surface of the housing 31, and a second rear window section 38 is formed on the front surface at a position facing the second rear window section 38. Two front windows 37 are formed as openings. The optical axis refracting member 32 is disposed between the second front window section 37 and the second rear window section 38 (see FIG. 5).

As shown in FIG. 4, the optical axis refracting member 32 is formed by joining two cubic prisms 41 and 42 with their side surfaces superimposed on each other. Each of the cubic prisms 41 and 42 is a cube in which two right-angled prisms 43 and 43 are joined with their slopes 43a and 43a overlapping each other, and is a so-called cube-shaped beam splitter. Here, the optical axis refracting member 32 is made by joining two cubic prisms 41 and 42 symmetrically, and is arranged so that the slopes 43a and 43a of each cubic prism 41 and 42 are inclined inwardly and forwardly. Ru. The right cubic prism 41 constituting the optical axis refracting member 32 has an antireflection coating applied to the front surface 41a and the rear surface 41b, and a black coating applied to the other four surfaces to suppress input and output of light. Further, the left cubic prism 42 has the antireflection coating applied to the front surface 42a, the rear surface 42b, and the left side surface 42c, and the black coating applied to the other three surfaces. Furthermore, a mirror coating (metal coating) is applied to the slope 43a of each cubic prism 41, 42, respectively. In this embodiment, the mirror coating is performed so that the transmittance (transparency) of the slope 43a is 20 to 60%.

The camera member 33 is constituted by a CCD camera, and is disposed on the left side of the optical axis refracting member 32, with the camera lens facing the left side surface 42c of the left cubic prism 42, as shown in FIG. . A cable 34 is connected to the camera member 33, as shown in FIG. 1, and is connected to a control device 35 via the cable 34. This cable 34 extends leftward from the left side of the camera member 33 and is connected to the left side of the head belt section 2 . It is then connected to a control device 35 held by the wearer. A signal instructing the camera member 33 to take an image and data taken by the camera member 33 are transmitted and received between the camera member 33 and the control device 35 through the cable 34, and the control device 35 sends and receives a signal to the camera member 33 to instruct the camera member 33 to take an image. Power is supplied to 33. The control device 35 includes a switch for causing the camera member 33 to take an image, a power source, a wireless communication function, and the like, and the wireless communication function allows data input from the camera member 33 to be communicated via a network. Thereby, still images and moving images captured by the camera member 33 can be transmitted via wireless communication and displayed on a monitor.

In such a visible object imaging member 4, the incident light that enters the cubic prism 42 on the left side of the optical axis refracting member 32 via the second front window 37 is transmitted light that passes through the slope 43a of the cubic prism 42. The reflected light is reflected by the slope 43a and transmitted from the left side surface 42c. As a result, the optical axis P of the camera member 33 coincides with the line of sight S that passes through the left cubic prism 42 in the front-rear direction (see FIG. 7). Here, the line of sight S is a line of sight refracted by the first line of sight refraction member 22 and the second line of sight refraction member 24 (integrated refraction member 23) of the convergence angle reduction member 3.

Similarly, the incident light that has entered the cubic prism 41 on the right side of the optical axis refracting member 32 via the second front window 37 is divided into transmitted light that passes through the slope 43a of the cubic prism 42, and light that is reflected by the slope 43a. reflected light. In this way, the optical axis refracting member 32 has the left and right cubic prisms 41 and 42 symmetrically provided, so that the wearer can It is possible to prevent this from causing a sense of discomfort.

The magnifying glass 5 is fixed to the front surface of the casing 31 of the visible object imaging member 4 so as to cover the second front window 37 . Further, the visible object imaging member 4 is fixed to the front surface of the convergence angle reduction member 3 such that the second rear window portion 38 thereof and the first front window portion 27 of the convergence angle reduction member 3 overlap each other. . In this way, the convergence angle reducing member 3, the visible object imaging member 4, and the magnifying glass 5 are integrated. Then, the convergence angle reducing member 3 is attached to the head belt portion 2 via the connecting member 7, thereby forming the head-mounted loupe 1 of this embodiment.

In the head-mounted loupe 1 of this embodiment, the head belt section 2 is attached to the wearer's head, and the convergence angle reducing member 3, the visible object imaging member 4, and the magnifying glass 5 are moved to the above-mentioned use position. (FIG. 2(A)) allows the wearer to see the object in an enlarged manner. As shown in FIGS. 6A and 7, the wearer's left and right eyes are connected to the first line-of-sight refracting member 22 and second line-of-sight refracting member 24 of the convergence angle reduction member 3, and the optical axis of the visible object imaging member 4. The object 62 is viewed through the refraction member 32 and the magnifying glass 5. That is, the line of sight S, S of the left and right eyes is refracted by the first line of sight refracting members 22, 22 and the second line of sight refracting members 24, 24 of the integrated refracting member 23, respectively, and 41 and 42, respectively, and reaches the object 62 via the magnifying glass 5.

Here, as described above, the convergence angle reducing member 3 refracts the left and right lines of sight S, S by the first line of sight refracting members 22, 22 and the second line of sight refracting members 24, 24 (integrated refracting member 23). By doing so, the convergence angle θ of the lines of sight S, S becomes smaller than the convergence angle θ' of the lines of sight S', S' that do not pass through the convergence angle reducing member 3 (see FIG. 6(B)). Thus, for example, when looking at the deep part (object) 62 of a deep hole 61, if the head-mounted loupe 1 of this embodiment is used, the deep part 62 can be focused, as shown in FIG. 6(A). The deep portion 62 can be viewed in an enlarged manner through the magnifying glass 5. On the other hand, as shown in FIG. 6(B), when the conventional binocular loupe 101 is used, the left and right lines of sight S', S' pass through the respective loupe parts 102, 102 of the binocular loupe 101. The convergence angle θ' of the lines of sight S' and S' is larger than the convergence angle θ of the lines of sight S and S through the convergence angle reduction member 3 (FIG. 6(A)). Therefore, the conventional binocular loupe 101 cannot focus on the deep part 62 of the deep hole 61, and cannot view the deep part 62 in an enlarged manner. In this way, the head-mounted loupe 1 of this embodiment can reduce the convergence angle θ of the lines of sight S, S by the convergence angle reducing member 3, so that the convergence angle θ of the line of sight S, S can be reduced. Even if the object is 62, it can be focused and enlarged. Furthermore, this embodiment is provided with the above-mentioned light member 14, and since the inside of the deep hole 61 can be illuminated by the light member 14, there is an advantage that the visibility of the deep part 62 can be improved.

Further, as shown in FIG. 7, the optical axis P of the camera member 33 of the visible object imaging member 4 is refracted by the slope 43a of the optical axis refracting member 32 and coincides with the line of sight S of the wearer's left eye. , the optical axis P and the line of sight S reach the object via the magnifying glass 5. Thereby, the camera member 33 can capture still images and moving images from the wearer's perspective. Here, since the optical axis P refracted by the optical axis refracting member 32 coincides with the line of sight S whose convergence angle θ is reduced by the convergence angle reducing member 3, the deep part (object) 62 of the deep hole 61 The camera member 33 can take images from the same line of sight as the wearer. For this reason, by displaying a moving image or a still image captured by the camera member 33 on a monitor, a person other than the wearer can view the object from the same line of sight as the wearer.

Therefore, according to the head-mounted loupe 1 of this embodiment, as described above, it is easy to focus on the deep part of a deep hole (or a hole with a small opening diameter), and magnification can be seen with the left and right eyes. A person can visually recognize the deep part (object) three-dimensionally. The camera member 33 can image the deep part (object) from the wearer's perspective. It goes without saying that shallow holes and relatively widely exposed members can be accurately and stably magnified and imaged by the camera member 33 from the wearer's line of sight.

In this way, the head-mounted loupe 1 of this embodiment can capture still images and videos from the same line of sight as the wearer, so for example, when a surgeon uses it during surgery, assistants, visitors, etc. You can see the status of the surgery from the same perspective. Therefore, during surgery, assistants and visitors can accurately know the surgical situation, and can provide accurate advice depending on the surgical situation. In addition, viewing recorded images after surgery can help students and other medical professionals accurately disseminate knowledge about various surgical situations.

The present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the present invention.
For example, the dimensions and shapes of each part in the embodiments described above can be changed as appropriate.
Further, in the above-described embodiment, the camera member 33 is arranged on the left side of the optical axis refracting member 32, but the camera member 33 is not limited to this, and it is also possible to arrange it on the right side. Furthermore, the camera member 33 may be arranged on both the left and right sides of the optical axis refracting member 32, respectively.
Further, in the above embodiment, the control device 35 is a device equipped with a power source, a wireless function, etc., but the control device 35 is not limited to this, and may be a mobile terminal such as a smartphone or a tablet. With such a mobile terminal, data captured by the camera member 33 can be easily transmitted and received.

1 Head-mounted magnifying glass 2 Head belt portion 3 Convergence angle reduction member (convergence angle reduction means)
4 Visual object imaging member 5 Magnifying glass 7 Connecting member 11 Base 12 Movable part 13 Mounting part 21 Housing 22 First line of sight refracting member 23 Integrated refracting member 24 Second line of sight refracting member 26 Connecting protrusion 27 First front window part 28 First rear window 31 Housing 32 Optical axis refracting member 33 Camera member 34 Cable 35 Control device 37 Second front window 38 Second rear window 41, 42 Cubic prism 41a, 42a Front 41b, 42b Rear 42c Left side 43 Right angle prism 43a Slope 61 Deep hole 62 Deep part (object)
101 Binocular loupe 102 Loupe part P Optical axis S, S' Line of sight θ, θ' Convergence angle

Claims (2)

a head-mounted part that is mounted on the wearer's head;
a magnifying glass that is attached to the head-mounted part and placed in front of the wearer's eyes when the head-mounted part is mounted on the head of the wearer, so that the object can be viewed in an enlarged manner; In a head-mounted loupe,
a pair of left and right first line of sight refracting members disposed behind the magnifying glass and in front of the left and right eyes of the wearer, respectively, and refracting the left and right lines of sight inward, respectively;
A pair of left and right second line of sight refracting members are arranged between the left and right first line of sight refracting members behind the magnifying glass and refract the left and right line of sight refracted by the first line of sight refracting members forward. and the convergence angle of the left and right lines of sight via the first line of sight refracting member and the second line of sight refracting member is compared to the convergence angle of the left and right lines of sight that do not go through the first line of sight refracting member and the second line of sight refracting member. A convergence angle reduction means is provided to reduce the convergence angle.
Furthermore, an optical axis refracting member disposed between the magnifying glass and the second line of sight refracting member;
a camera member capable of capturing a still image or a moving image of the object through the optical axis refracting member, the optical axis refracting member allowing the line of sight refracted by the second line of sight refracting member to pass forward; , the object is made visible through the magnifying glass, and the optical axis of the camera member is refracted so that the refracted optical axis coincides with one of the left and right lines of sight of the wearer. Features a head-mounted loupe. The optical axis refracting member is
Cubic prisms made by integrating two right-angled prisms by overlapping their slopes are arranged symmetrically in front of the left and right second line of sight refracting members. The head-mounted loupe according to claim 1, wherein the left and right lines of sight respectively refracted by the line-of-sight refracting member pass forward.

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