JPH09159933A - Magnifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the magnifier which is effectively prevented from rolling when placed on a slanting surface, etc., and can reduce the distortion of an image of an observed body and form a sufficiently light enlarged image of the observed body even when the size constitution of a lens body itself is small. SOLUTION: This magnifier 30 consists of a polyhedral lens body 32, which has convex lens surfaces 34 and 36 provided on plural surfaces 30b and 30c which are not parallel to each other. A surface 30f where a scale 31 is provided is made to abut against the observed body and then an enlarged image is viewed through the convex lens surface 36. The lens body 32 is of polyhedral constitution, so the stability when this magnifier is placed on a body is high and the lens surfaces having desired curvature that does not distort the enlarged image can be formed. Further, the respective flanks of the lens body 32 function as light collection surfaces and the lightness of the enlarged image is large.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnifying glass, and more particularly to a magnifying glass characterized by a lens-integrated magnifying lens having a plurality of lens surfaces each having optical axes that are not parallel to each other.

[0002]

2. Description of the Related Art Conventionally, two types of magnifying glass, such as the following two types, namely, a lens combination type and a lens-integrated type magnifying glass, have been used as the magnifying glass capable of observing an observation object at a plurality of magnifications. Are known.

This lens combination type magnifying glass is
A plurality of lenses are housed in the lens housing body in parallel so as to be rotatable or slidable with respect to each other. By rotating or sliding one or more lenses selectively outside the lens housing body, a plurality of different predetermined lenses are provided. Magnification can be obtained.

By the way, in the case of this type of magnifying glass, it is necessary to selectively take out the lens outside the lens housing main body at the time of use as described above, and the handling is troublesome. Further, there is a problem that the number of constituent parts such as the lens housing main body and the member for taking the lens out of the main body increases.

As another type, a spherical lens in which a plurality of spot lens surfaces having optical axes that are not parallel to each other and having different curvatures are provided in different parts of the spherical surface in a single spherical body made of a transparent material. A lens-integrated magnifying glass including a main body (for example, the actual flat screen 1-136915).
No. gazette, etc.) is provided.

In the latter magnifying glass, since the lens body itself has a substantially spherical shape, not only is there a problem in usability, such as rolling carelessly when it is placed on an inclined plane during use. In this type of magnifying glass, the spherical surface of the lens body other than the spot lens surface functions as the lens surface, so if the radius of curvature of the lens body is small, the image of the observation object magnified through the lens surface. There is a problem that is distorted. In addition to this problem, this magnifying glass has a problem that the image of the magnified object is insufficient in brightness because the lens body is spherical as described above.

This lens-integrated magnifying glass is used in addition to the above problems because the spherical surface of the lens body is directly gripped by hand or used with a part of the lens body being in direct contact with an object. As a result, there is a problem that the lens surface becomes dirty or the lens surface is scratched.

[0008]

Therefore, the main technical problems to be solved by the present invention are that the constitution is simple, the stability when placed on an inclined surface or the like is good, and the lens main body It is an object of the present invention to provide a magnifying glass that can reduce the distortion of a magnified image without being affected by the size of the overall size configuration and that has a sufficient brightness of the magnified image.

In addition to the above technical problems, another technical problem is to provide a magnifying glass which protects the lens body during use and prevents the lens surface from being soiled or damaged.

[0010]

Means, Actions, and Effects for Solving the Problems In order to solve the main technical problems described above, the present invention provides a magnifying glass having the following configuration.

That is, the magnifying glass is provided with a transparent polyhedral lens body, and the lens body has lens surfaces on two or more surfaces which are not parallel to each other. The respective lens surfaces have different curvatures (magnifications) from each other. In this configuration, the lens surfaces have optical axes that are not parallel to each other.

As the transparent material forming the lens body, for example, transparent resin or glass material is used.

Specifically, the lens main body is, for example, configured to be solid, that is, in a state in which the inside is closed, or to make a thin lens having the lens surface correspond to the lens surface. It can be configured as a combination.

According to the above construction, since the lens body is composed of the polyhedron as described above, this magnifying glass can be stably placed on an inclined surface or the like.

Further, the image magnifying surface that contributes to magnifying the observation object is substantially only each lens surface, and the other surface of the lens body other than each lens surface is the spherical shape according to the conventional example. Since it does not have a curvature unlike a lens, a magnifying glass in which distortion of a magnified image is effectively reduced is provided only by considering the curvature of the lens surface even when the lens body is downsized. . In other words, this configuration can increase the degree of freedom in designing the lens body.

Furthermore, the other surface of the lens body on which the lens surface is not formed functions as a daylighting surface, so that a magnified image of sufficient brightness can be obtained.

It is preferable that the magnifying glass further includes a frame at a corner portion of the lens main body for allowing the lens main body to be separated from the flat surface by a predetermined distance when placed on a magnifying glass mounting plane. .

With this structure, the frame not only functions as a grip portion of the magnifying glass when in use, but also prevents the lens portion from contacting the magnifying glass mounting surface when the magnifying glass is placed on the flat surface. Thus, the frame prevents the lens surface from being soiled with dust or the like, and the lens surface from being scratched.

In this structure, it is preferable that the predetermined space is a space corresponding to a focus position with respect to the mounting plane of the lens surface. With this structure, the frame is simply brought into contact with the mounting plane body. Focusing on an observation object is automated.

The magnifying glass may further include a scale on the objective surface side of the lens body.

With this configuration, it is possible to easily measure the actual size of the object by comparing it with the scale when observing the object.

In this structure, the scale is preferably detachably attached to the lens body,
Further, it is preferable that various scales are prepared.
With this configuration, the magnifying glass can be properly used according to various uses (uses) of the observer.

The magnifying glass may further include an illuminating device for illuminating the inside of the lens body.

With this structure, the observer can observe the object while the light beam from the illuminating device is radiated on the object, and therefore, the observer can use the object in the dark or the like. The usage is expanded.

The lens body of the magnifying glass may have a plurality of surfaces having different areas.

With this configuration, the observer can observe the target object in the visual fields of different sizes.

[0027]

DETAILED DESCRIPTION OF THE INVENTION The magnifying glass according to the first to thirteenth embodiments of the present invention will be described in detail below with reference to FIGS.

FIGS. 1 to 3, 5, 6, 8 to 14 and 17 are perspective views of magnifying glasses of the first to thirteenth embodiments, respectively.
The magnifying glass 10 of the first embodiment shown in FIG. 1 is formed integrally from a single transparent material and has six roughly square surfaces 10.
It is provided with a substantially cubic lens body 12 of solid integral molding type having a to 10f (that is, a type integrally molded in a state where the inside is filled). Among the above-mentioned six surfaces, the two adjacent flat surfaces 10b and 10e have circular convex lens surfaces 14 and 16 whose optical axes intersect each other at about 90 °.
Are formed in the central part, and the other four surfaces 10a, 10
d, 10e, and 10f are formed in a plane.

The convex lens surfaces 14, 1 of the lens body 12
Reference numeral 6 is used as an eye side surface, while each surface 10d, 10f located on the opposite side of each convex lens surface 14, 16 is used as an objective side surface, respectively. Each surface 10d, 10 of the latter
f is formed as a flat surface as described above, and at the time of use, one of the flat surfaces 10d and 10f faces downward, and the lens body 12 is directly placed on an observation object (not shown).

Objective side surfaces 10d, 1 of the lens body 12
Since 0f is formed as a flat surface as described above, when placed on an inclined surface with the respective surfaces 10d, 10f facing down, the flatness of each of the flat surfaces 10d, 10f causes the lens body with respect to the inclined surface. 12 stability is ensured.

Further, when the lens body 12 is placed on the inclined surface as described above, the flat surface 10 that does not contact the inclined surface is provided.
Since a, 10d, and 10e function as a daylighting surface that takes in outside light, a sufficiently bright magnified image of the observation object can be obtained.

The magnifying glass 10 according to the first embodiment is
Two convex lens surfaces 14 and 16 and two adjacent surfaces 10
b and 10c, the magnifying glass 20 according to the second embodiment is a solid cubic lens body 20 similar to the magnifying glass 10 of the first embodiment, as shown in FIG. Of the six faces of the three faces 20a, 20b, 20c
Each surface 20a, 20b, 20c by effectively utilizing all
Each of the convex lens surfaces 28, 24, 2 having a substantially circular shape in the center of the
6 is formed, the other three surfaces are formed to be flat. In this configuration, each convex lens surface 28, 24, 26
The optical axes of the intersect at 90 ° to each other.

FIG. 3 shows a magnifying glass 30 according to a third embodiment, which is composed of a substantially cubic lens body 32 of a solid integral molding type similar to the magnifying glass 10, 20 of the first and second embodiments. There is. In this lens body 32, convex lens surfaces 34 and 36 each having a substantially circular shape are formed in the central portions of two adjacent surfaces 30b and 30c, respectively, and a flat surface 30f located on the opposite side of one surface 36 of the convex lens surfaces. Is provided with a scale 31. When the scale 31 is used, the surface 30f on the scale 31 side is used as an objective side surface, while the convex lens surface 36 is used as an eye side surface. FIG. 4 shows an example when the scale side surface 30f of the lens body 32 is brought into contact with an object and observed through the convex lens surface side 30c.

Lens body 1 of the first and second embodiments
The facing surfaces of the lens surfaces 2 and 22 with respect to the lens surfaces are each formed as a flat surface. However, as shown in FIG. 5 as a fourth embodiment, by providing a distortion correction lens surface on each of these flat surfaces, enlargement is achieved. Image distortion can be reduced. In the figure, reference numerals 48, 44 and 46 denote three surfaces 40.
a, 40b, and 40c are convex lens surfaces provided respectively, and 48 ', 44', and 46 'are convex lens surfaces 40a,
Distortion correction lens surfaces provided on surfaces 40e, 40d, and 40f facing 40b and 40c, respectively.

Now, the magnifying glass 10, 20, 30, 40 according to each of the first to fourth embodiments is a solid type lens body 12, 22, 32, 42 with the entire outer surface exposed.
6 and 7 for this solid type.
Shows a hollow assembly type magnifying glass having a frame having a three-dimensional square shape at each corner of the lens body as a fifth embodiment. As shown in the figure, the lens body 52 of the magnifying glass 50 includes transparent flat plate side surfaces 50 a, 50.
Convex lens surfaces 58, 54, 56 at the central portions of b, 50c, respectively.
The plate-shaped lenses 58, 54 and 56 provided with the above and the transparent plate-shaped side surfaces 50d, 50e and 50f whose outer surfaces are formed flat without providing a convex lens surface are respectively prepared separately, and the frame 51 is provided. Are three-dimensionally assembled with each other as a fixing means.

That is, in this frame 51, as shown in FIG. 7, a pair of vertically long grooves 33 are formed in the inner corners of the frame section having a quadrangular cross section, and each of the flat plate side surfaces 50a. By fitting 50f into each of these grooves 33, a cube-shaped lens body 52 with a hollow inside is formed.

As shown in the figure, the frame portions are formed to be higher than the flat plate side surfaces 50d, 50e, 50f and the outer surfaces of the flat plate lenses 54, 56, 58 surrounded by the frame portions. When the magnifying glass 50 is placed on an observation object mounting surface (not shown), the flat plate side surfaces 50d, 50
e, 50f and the outer surfaces of the plate lenses 54, 56, 58 are prevented from coming into contact with the observation object mounting surface, and the lens body 52
Is protected and damage to the lens body 52 is prevented.

Further, since each of the frame portions functions as a grip portion during use, that is, since the magnifying glass can be operated without directly touching the lens body 52, the lens body is protected and the lens body is protected. It is possible to prevent the hand dust from adhering to 52.

Magnifying glass 1 according to the first to fourth embodiments
Reference numerals 0, 20 and 30 are respectively formed of the solid integrally molded type lens bodies 12, 22 and 32 as described above, but as shown in an exploded perspective view of FIG. The body may be constructed as a solid assembly type formed of two or more members made of transparent material.

That is, in the present embodiment, as shown in the figure, the lens main body is provided with six sides on the six side surfaces provided in the transparent glass lens main body central portion 60a having a substantially cubic shape.
Two transparent resin flat-plate Fresnel lenses 60b are adhered to each other.

As shown in the present embodiment, the solid assembly type lens bodies 60a, 60b are the solid integral molding type lens bodies 12, shown in the first to third embodiments.
Compared with Nos. 22 and 32, manufacturing is easier and cost reduction can be realized. The lens body central portion 60a and each Fresnel lens 60b may be fixed to each other by known snap engagement means.

In the first to sixth embodiments, each lens body 12, 22, 32, 42, 52, 60a, 60 is used.
Although each b is formed in a substantially cubic shape,
As shown in FIG. 9 as a seventh embodiment, a lens body 72
Can be formed in a square pole shape. With this configuration, it is possible to widen the field of view of the observation target.

In the first to seventh embodiments, each lens body 12, 22, 32, 42, 52, 60a, 60 is used.
Each of b and 72 is configured as a hexahedron having six real surfaces, but as the eighth and ninth embodiments, FIG.
As shown in 11 respectively, the lens bodies 82 and 92 can be respectively formed as real thin lenses, that is, flat lenses, on only three or two adjacent surfaces of the polyhedron that are not parallel to each other. That is, in the eighth embodiment shown in FIG. 10, among the six surfaces of the hexahedron, three adjacent surfaces 80 are used.
Only b, 80c, and 80e form the lens body 82 as a flat lens, while in the ninth embodiment shown in FIG.
Two adjacent inclined surfaces 90 having an angle of 0 ° or more
Only b and 90c form the lens body 92 as a flat lens. In addition, in FIGS. 10 and 11, the alternate long and short dash line indicates three aerial surfaces 80a, 80d, and 80f of hexahedron, respectively.
The virtual edges forming the three imaginary surfaces 90a, 90d, 90e of the pentahedron are shown.

Lens bodies 12, 22, 32, 42, 52, 60a, 60b, 72 according to the first to seventh embodiments.
Is formed as a rectangular parallelepiped or quadrangular prismatic hexahedron, but as shown in FIG. 12 as a tenth embodiment, the lens body 102 can be formed in a three-dimensional shape of a triangular pyramid made of a transparent material. . In the figure, 100a,
Reference numerals 100b and 100c denote the lens body 1 of the triangular pyramid shape.
Two adjacent side surfaces of 02, and 100d are flat bottom surfaces of the lens body 102, and the three side surfaces 100a, 100b, 100c respectively have substantially circular convex lens surfaces 104, 106, 108. Are formed.

The magnifying glass 100 of the tenth embodiment is
The bottom surface 100d serves as an object side surface, and the three side surfaces 100a, 100b, 100c serve as eye side surfaces, respectively.
When the objective side surface 100d is placed on an inclined surface of an observation object or the like, the lens body 100 is stably placed on the inclined surface due to its flatness.

The magnifying glass 10 of the first to tenth embodiments,
20, 30, 40, 50, 60, 70, 80, 90, 1
00 can each be equipped with a well-known compact lighting device. FIG. 13 shows a magnifying glass 110 according to the eleventh embodiment in which an illumination device is provided on the top of a lens body 112 having a triangular pyramid shape similar to that shown in FIG.

By providing such an illuminating device 119, the object to be observed reflects the light rays of the illuminating device 119 and becomes easier to see.

Now, the magnifying glass 10, 20, 30, 40, 50, 60, 70, 80, 9 of the first to eleventh embodiments.
In 0, 100, 110, each lens body 12, 2
2, 32, 42, 52, 60a, 60b, 72, 82,
The convex lens surfaces of 92, 102, and 112 are respectively
The lens body is provided substantially at the center of each side surface, but as shown in FIG. 14 as a twelfth embodiment, one side surface is provided with a curvature so that the entire surface is convex lens surfaces 120a, 12a.
Can be formed as 0d. In this embodiment, the pair of adjacent side surfaces 120a, 120d are respectively
In this way, the entire side surface is formed as a convex lens surface.

By the way, in the magnifying glass 120 according to the twelfth embodiment, as shown in FIG.
A sheet-like scale plate 127 is detachably attached to the surface 120e on the opposite side of 0a by a known snap engagement means. It is desirable that a large number of scale plates 127 having different scales be prepared so that they can be used for various observation purposes. 15 and 16 show examples of scale plates 127a and 127b having different scales, respectively. In each figure, each scale plate 127a, 1a
The dots at the corners of 27b indicate engagement recesses corresponding to the snap engagement protrusions (not shown) provided on the lens body 122.

In order to use the magnifying glass 120 as, for example, a picture holder or a slide holder for a display, the magnifying glass 120 is provided between the lens body 122 and the scale portion 127 for accommodating the pictures or slides. Space may be provided.

FIG. 17 shows the magnifying glass 10, 20, 30, 40, 50, 60, 70, 8 according to the first to twelfth embodiments.
0, 90, 100, 110, 120 lens body 12,
22, 32, 42, 52, 60a, 60b, 72, 8
Unlike the shapes of 2,92,102,112,122,
The magnifying glass 13 according to the thirteenth embodiment, which is composed of an octahedral lens main body 132 in which a pair of opposing surfaces are substantially hexagonal flat surfaces.
0 is shown.

As shown in the figure, the lens main body 132 has three convex lens surfaces 130a, 130b, each of which has three rectangular side surfaces adjacent to each other with respective curvatures.
It is equipped with 130c. In the magnifying glass 130, the three convex lens surfaces 130a, 130b, and 130c are used as eye-side surfaces, while the convex lens surfaces 130a and 130a are
Each surface facing 130b and 130c is used as an object side surface.

As shown in the figure, this lens body 132
Is formed to be thin as a whole, and has the hexagonal shape 1
When one of the pair of flat surfaces is placed on the inclined surface, the lens body 132 is stably placed on the inclined surface due to the flatness of the flat surface.

In each of the first to thirteenth embodiments, on each of the convex lens surface or the surface of the flat lens,
It goes without saying that an antireflection coat may be provided.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a hexahedral magnifying glass according to a first embodiment of the present invention.

FIG. 2 is an overall perspective view of a magnifying glass according to a second embodiment of the present invention.

FIG. 3 is an overall perspective view of a magnifying glass with a scale according to a third embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a relationship between an apparent character enlarged by the magnifying glass with scale of FIG. 3 and a scale.

FIG. 5 is an overall perspective view of a magnifying glass according to a fourth embodiment of the present invention.

FIG. 6 is an overall perspective view of a magnifying glass with a scale according to a fifth embodiment of the present invention.

FIG. 7: VII-VII of magnifying glass with scale shown in FIG.
It is a line sectional view.

FIG. 8 is an exploded perspective view of a magnifying glass according to a sixth embodiment of the present invention.

FIG. 9 is an overall perspective view of a square prism-shaped magnifying glass according to a seventh embodiment of the present invention.

FIG. 10 is an overall perspective view of a magnifying glass according to an eighth embodiment of the present invention.

FIG. 11 is an overall perspective view of a magnifying glass according to a ninth embodiment of the present invention.

FIG. 12 is an overall perspective view of a triangular-pyramidal magnifying glass according to a tenth embodiment of the present invention.

FIG. 13 is an overall perspective view of a magnifying glass with a small lighting device according to an eleventh embodiment of the present invention.

FIG. 14 is an overall perspective view of a detachable scale portion magnifying glass according to a twelfth embodiment of the present invention.

15 is an example of a scale included in the magnifying glass of FIG.

16 is another example of the scale included in the magnifying glass of FIG.

FIG. 17 is an overall perspective view of an octahedral magnifying glass according to a thirteenth embodiment of the present invention.

[Explanation of symbols]

10 magnifying glass 10a-10f surface 12 lens main body 14,16 convex lens surface 20 magnifying glass 20a-20c, 20f surface 22 lens main body 22,26,28 convex lens surface 30 magnifying glass 30b, 30c, 30d, 30f surface 31 scale 33 groove 32 Lens body 34, 36 Convex lens surface 40 Magnifying glass 40a-40f surface 42 Lens body 44, 46, 48, convex lens surface 44 ', 46', 48 'Image correction lens surface 50 Magnifying glass 50a, 50b, 50c, 50d, 50e , 50f Flat plate side surface 51 Frame 52 Lens main body 54, 56, 58 Flat plate lens 60 Magnifying glass 60a Lens main body central part 60b Flat plate Fresnel lens 70 Magnifying glass 72 Lens main body 80 Magnifying glass 80a, 80d, 80f Aerial surface 80b, 80c , 80e flat lens 82 lens body 84, 46,88 convex lens surface 90 magnifying glass 90a, 90d, 90e imaginary surface 90b, 90c flat plate lens 92 lens body 94,96 convex lens surface 100 magnifying glass 100a to 100d surface 102 lens body 104,106,108 convex lens surface 110 magnifying glass 112 Lens body 119 Lighting device 120 Magnifying glass 120a, 120d, 120e surface 122 Lens body 127, 127a, 127b Sheet-like scale plate 130 Magnifying glass 130a, 130b, 130d surface 132 Lens body

Claims (6)

[Claims] 1. A transparent polyhedron lens body (12, 2)
2, 32, 42, 52, 60a, 60b, 72, 82,
92, 102, 112, 122, 132) and a lens body (12, 22, 32, 42, 52, 60)
a, 60b, 72, 82, 92, 102, 112, 12
2, 132) are lens surfaces (14, 16; 24, 26, 28; 34, 36; 4) which are not parallel to each other.
4,46,48; 54,56,58; 60b; 84,8
6, 88; 94, 96; 104, 108; 120a, 1
20d; 130a, 130b, 130c). 2. The lens body (12, 22, 32, 4)
2, 60a, 60b, 72, 102, 112, 122,
Magnifying glass according to claim 1, characterized in that 132) is solid. 3. The lens body includes the lens surface (8).
Thin lens (8, 86, 88; 94, 96)
0b, 80c, 80e; 90b, 90c) corresponding to the lens surface and combined with each other. 4. A corner portion of the lens body (52) is provided with a frame (51) for keeping the lens body (52) at a predetermined distance from the magnifying glass mounting plane. The magnifying glass according to 1. 5. A scale (31; 127) on the objective surface (30f, 120e) side of the lens body (32, 122).
A magnifying glass according to claim 1, characterized in that it comprises a, 127 b). 6. The magnifying glass according to claim 1, further comprising an illumination device (119) for illuminating the inside of the lens body (112).