KR20160147668A - Lens attachment - Google Patents

Abstract

The present invention provides a lens attachment which comprises an object lens to magnify and view an object to be observed, is attached to a photographing device to be used, and does not reflect a shadow of the photographing device to a display to view a sharp or a clear magnified image of the object to be observed. The lens attachment comprises an object lens unit (15) and a lighting unit (16) integrated and formed around the object lens unit (15). The lens attachment further comprises: a lens block (10) made of a transparent material; an attaching unit (12) to detachably attach a main body of the lens attachment (1) to a photographing device; and a support unit (13) to support the lens block (10) and the attaching unit (12). The lighting unit (16) has a light exiting surface (21) and arranges the light exiting surface (21) towards an object to be observed when the object lens unit (15) approximately coaxially faces a camera lens of the photographing device and is attached to the photographing device.

Description

LENS ATTACHMENT

The present invention relates to a lens attachment.

The imaging device built into a mobile phone or a smartphone has recently made great strides and has made it possible to mount a large-sized imaging device and significantly increase the effective number of effective pixels, It is possible to obtain a high-quality image comparable to a camera (compact digital camera) or the like. However, only by using a zoom function (zoom function) mounted on a photographing device of a cellular phone or a smart phone, deterioration of the image quality of the enlarged image is relatively large, and a clear and clear enlarged image of the observation object is observed It is often difficult to shoot.

A proposal has been conventionally proposed in which an objective lens (object lens) is attached to a photographing apparatus to obtain an enlarged image of the observation object. For example, Japanese Unexamined Patent Application Publication No. 2001-325850 discloses a lens mounting structure in which a lens main body (lens body) that transmits light and a sheet-like adhesive member coated with an adhesive agent on both sides (Attachment means) for attaching the camera lens to the surface of the camera lens, and a hole formed in the attachment means so as not to block the light entering the camera lens (claims 1 and 2). Patent Document 1 also discloses a lens attached to a camera lens mounting surface of a photographing apparatus by a pressing means such as a clip or a spring (Claims 10 and 13).

Patent Literature 2 discloses an image pickup apparatus having an auxiliary lens, an eliminating operation protruding piece (removing operation protruding piece) protruding from the outer periphery of the auxiliary lens, and an auxiliary lens, (Auxiliary lens adapter device) having an adhesive member which removably adheres (adheres) to a front surface and supports the same.

Patent Literature 3 discloses a lens barrel having a contact lens, a lens holder for supporting the affix lens, and a lens holder for supporting the lens holder and holding the lens holder therebetween on both sides facing the affix lens A flat shape frame having a circular window centered on a position intersecting with an optical axis of the macro lens and a circular shape on a surface facing the object to be observed of the frame, A substantially flat contact portion formed around the window and adapted to contact the observation object and a substantially flat fixing portion provided on a surface facing the photographing device of the frame and adhering to the imaging device, The present invention relates to a contact loupe.

Patent Document 4 discloses an ultra high magnification photographing system (super high magnification photographing system) in which a single lens including an aspheric surface is attached to a lens surface of an electronic camera (electronic camera).

Patent Literature 5 discloses an image pickup apparatus having a camera frame provided with a front end opening portion, an objective lens disposed in a camera frame and focusing an image by condensing light passing through the front end opening, an image pickup element for photographing an image formed by the objective lens and the image forming lens; a handheld handle attached to extend outwardly with respect to the camera frame; And a rotation connecting portion. The distal end opening is brought into contact with the observation surface on which the observation object is present, and the camera frame is supported at a predetermined angle with respect to the observation surface so that the image of the observation surface, And a photographing device for taking an image on a photographing surface of the photographing device.

Japanese Patent Application Laid-Open No. 2004-054212 : Japanese Patent Application Laid-Open No. 2004-199014 : Japanese Patent Application Laid-Open No. 2004-286776 Japanese Patent Application Laid-Open No. 2008-129564 : Japanese Patent Application Laid-Open No. 11-002585

When the objective lens is mounted on the same axis as the camera lens of the photographing apparatus as in the prior art, in order to obtain a clear and clear enlarged image because the focal length of the objective lens is relatively short, It is necessary. However, when the objective lens is brought close to the object to be observed, the imaging apparatus itself blocks light from entering the object to be observed, thereby causing the shadow of the imaging apparatus to be displayed on the display or the periphery of the display It tends to be difficult to observe the enlarged image of the observation object clearly and clearly. Particularly, in a smart phone or a mobile phone with a camera, the attachment position of the camera lens is biased to the end portion, and the tendency becomes remarkable.

In some photographing apparatuses, a light for brightening the field of view is attached, but the shadow may not completely disappear even if the light is turned on. In addition, the central portion of the display becomes excessively bright due to lighting of the light, so that the enlarged image of the observation object may not be clear.

An object of the present invention is to provide an observation apparatus that includes an objective lens for magnifying an observation object and is used by being attached to a photographing apparatus and is capable of viewing a clear, To provide a lens attachment.

Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above problems, and as a result, they have found that a lens block including a light-converging portion integrally formed around an objective lens portion and an objective lens portion and forming a lens block made of a transparent material, A lens attachment in which a light exit surface to be emitted is formed in a mining portion is attached to a photographing apparatus. The inventors of the present invention have made it possible to increase the amount of light in the space between the objective lens unit and the object to be observed by adopting the above configuration, so that even when the distance between the objective lens unit and the object to be observed becomes narrow, It is possible to observe a clear and clear enlarged image of the observation object and to find that the photographing apparatus with the lens attachment can be easily used as a microscope which can magnify and view a near object to be observed, I came to the completion.

That is, the present invention provides the following lens attachments (1) to (10).

(1) A lens attachment which is detachably attached to a photographing apparatus having a camera lens, a photographing element, and a display for displaying an image of an observation object captured by the camera lens, the lens attachment comprising: an objective lens part; And a supporting portion for supporting the lens block and the attaching portion. The light-emitting portion includes at least a light-emitting portion and a light- And the light exit surface is disposed toward the object to be observed when the object lens portion is coaxially opposed to the object lens and attached to the image pickup apparatus.

According to the lens attachment of the present invention, the object to be observed can be enlarged by about 10 to 300 times by the objective lens unit of the lens block, and the photographing apparatus can be easily used as a microscope. According to the present invention, when the light source unit is attached to the image pickup apparatus so as to face the camera lens substantially coaxially with the camera lens, the light source unit having the light exit surface disposed toward the object to be observed is formed around the objective lens unit, The amount of light in the space is remarkably increased even if the distance is close to the predetermined value. Therefore, no shadow is displayed on the display, and an enlarged image of the observation object can be clearly and clearly seen.

(2) The lens attachment according to (1), wherein at least a part of the mining portion protrudes to a position where it is not blocked from the outside of the photographing apparatus by the photographing apparatus when the lens attachment is attached to the photographing apparatus.

According to the lens attachment described in (2) above, since ambient light can be received in the space between the objective lens unit and the observation object without being disturbed by the imaging apparatus, the image quality (clarity and clarity) Can be improved.

(3) The light emitting device according to any one of the above items (1) to (3), wherein the light emitting portion has a groove portion that continuously or intermittently rotates around the objective lens portion, and the groove portion has, as a light emitting surface, a first inner side surface located relatively closer to the objective lens portion (1) or (2), wherein the first and second inner surfaces are inclined surfaces having an inclination angle with respect to the thickness direction of the lens block.

According to the lens attachment described in (3) above, light incident from the side surface of the objective lens portion or light incident from the direction in which the object to be observed is reflected is mainly reflected from the first and second inner surfaces of the groove portion, The amount of light in the space between the observation object and the objective lens unit can be remarkably increased. As a result, no shadow is displayed on the display, and a clear and clear enlarged image of the observation object can be observed.

(4) The lens attachment of (3), wherein the inclination angle of the first inner side surface decreases as the first inner side surface is located farther from the objective lens part.

According to the lens attachment described in (4) above, it is possible to improve the efficiency of receiving light by the mineralsection and further increase the amount of light in the space between the objective lens part and the object to be observed .

(5) The lens attachment as set forth in (3) or (4), wherein the mining portion has a plurality of grooves, and the plurality of grooves are formed concentrically around the axis of the objective lens portion.

According to the lens attachment of (5), since the plurality of grooves are formed to have regularity in a substantially concentric circular shape, uniformity of light quantity can be achieved in the entire region of the space between the objective lens portion and the observation object, The image quality of the enlarged image of the object can be improved.

(6) The apparatus according to any one of (1) to (6), further comprising a focus adjusting section supported by the supporting section, wherein the focus adjusting section has a shape in which a surface opposite to the attaching surface to the supporting section protrudes in a gentle shape from the periphery to the center To (5).

According to the lens attachment of (6), in a state in which the top portion (center portion) of the focus adjustment portion supported by the support portion is in contact with the surface on which the observation object is placed, the lens attachment is moved in the vertical direction , The focus of the objective lens portion with respect to the object to be observed can be easily adjusted by vertically moving and / or rotating in the horizontal direction and the inclined direction.

(7) The lens attachment according to any one of (1) to (6), further comprising a protective cover mounted to cover an outer surface of the lens block, the attachment portion and the support portion supported by the support portion.

According to the lens attachment of the above (7), when the lens attachment is stored or transported, particularly, damage to the lens block and the attachment portion can be prevented, and the lens attachment can be used for a long period of time.

(8) The lens attachment according to any one of (1) to (7), wherein the focus adjusting portion and the attaching portion are opposed to each other with the support portion interposed therebetween and the sum of the thicknesses of the focus adjusting portion, .

According to the lens attachment of (8), when the lens attachment main body, from which the protective cover is removed from the lens attachment, is attached to the photographing apparatus, the protective cover is placed at a position distant from the attachment position of the lens attachment main body with respect to the photographing apparatus It can be disposed between the mounted surface and the image pickup apparatus and used as a tooth of the image pickup apparatus. Since the protective cover is almost the same thickness as the thickest portion (the total thickness of the focus adjusting portion, the supporting portion, and the attaching portion) of the lens attachment main body, in some cases, an enlarged image of the observation object can be seen without adjusting the focus of the objective lens portion. Further, since the protective cover is not fixed to the image pickup apparatus, fine adjustment of the focus can be easily performed when the focus adjusting section is a drum shape.

(9) The minuter may be any one of the above-mentioned (1) to (8), which has a planar shape corresponding to a circular or regular polygonal shape coaxial with the objective lens portion in an area having an internal angle of 60 degrees or more centered on the axial center of the objective lens portion. One lens attachment.

According to the lens attachment described in (9) above, it is possible to further equalize the amount of light in the space between the objective lens portion and the object to be observed.

(10) The lens attachment of any one of (1) to (9), wherein the photographing apparatus is a digital camera, a digital still camera, a digital camcorder, a mobile phone with a camera, or a smartphone.

According to the lens attachment described in (10) above, by attaching the lens attachment to the portable photography apparatus, the lens attachment can be used as a portable microscope which can be used by every person in accordance with each preference.

In the present invention, the specification, the claims, and the numerical values, the shapes, the positions, and the like described in the drawings not only mean the numerical values, the shapes, the positions and the like physically and accurately, And is intended to cover an error range that may reasonably be expected or can occur to a person skilled in the art, and generally includes all such numerical values, shapes, positions, and the like. That is, the upper and lower limits belong to design items that can be appropriately changed in accordance with the environment at a level of a person skilled in the art. For example, in the above (1) and (9), the term "coaxial" includes a coaxial coaxial line including coaxial lines. Also, in the above (5), the term "concentric circle" includes concentric circles including concentric circles. Also, in (8) above, 'the same' includes approximately the same thing including the same. Also, in (9), the term 'circle' includes an approximately circular shape including a circle, and the term 'regular polygon' includes a regular polygon including a regular polygon. Hereinafter, it is the same in the present specification.

By attaching the lens attachment of the present invention to a photographing apparatus, a shadow of the photographing apparatus is not displayed on the display even though the objective lens is used to magnify the observation object, so that a clear and clear enlarged image of the observation object can be seen .

1 is a side view showing a state in which a lens attachment body is attached to a photographing apparatus.
Fig. 2 is an exploded perspective view schematically showing the configuration of the lens attachment of the first embodiment provided with the lens attachment body shown in Fig. 1. Fig.
Fig. 3 is an exploded perspective view schematically showing the configuration of the lens attachment body shown in Fig. 1. Fig.
4, (a) and (b) are sectional views schematically showing the configuration of the lens attachment body shown in Fig. 1 and the lens attachment shown in Fig. 2, respectively.
5 is a schematic diagram showing a configuration of a lens block.
6 is a side view schematically showing a focus adjustment method by the focus adjustment unit.
7 is a side view explaining another method of using the protective cover.
8 is a perspective view schematically showing the configuration of another type of protective cover.
9 is a side view schematically showing the configuration of another type of lens attachment.
10 is a side view schematically showing the configuration of another type of lens attachment.

Hereinafter, the lens attachment 1 of the first embodiment will be described in detail with reference to the drawings. 1 is a side view showing a state in which a lens attachment body 2 is attached to a photographing apparatus 100. FIG. The lens attachment main body 2 means that the protective cover 14 to be described later is detached from the lens attachment 1. [ Fig. 2 is an exploded perspective view schematically showing the configuration of the lens attachment 1 of the first embodiment provided with the lens attachment main body 2. Fig. Fig. 3 is an exploded perspective view schematically showing the configuration of the lens attachment main body 2. Fig. 4 (a) is a sectional view schematically showing the configuration of the lens attachment body 2, and Fig. 4 (b) is a sectional view schematically showing the configuration of the lens attachment 1. In FIG. 4, the separation wall (separation wall) 32 is not shown in the figure.

The lens attachment 1 of the first embodiment is a lens attachment main body 2 having a protective cover 14 removed as shown in Fig. 1, and includes a camera lens, a photographing element, Is attached to the photographing apparatus 100 having a display (not shown) displaying an image of the observed object captured by the camera lens so that the photographing apparatus 100 can be attached and detached . More specifically, the lens attachment main body 2 is configured so that the objective lens unit (object lens unit) 15 described later is substantially coaxial with the camera lens of the photographing apparatus 100, (100).

Here, the photographing apparatus 100 is not particularly limited, but a photographing apparatus 100 that is easy to carry is preferable, and for example, a digital camera, a digital still camera, a digital camcoder ), A cellular phone with a camera, and a smartphone. Among these, a cellular phone with a camera and a smart phone are particularly preferable. By attaching the lens attachment 1 to the photographing apparatus 100 which is easy to carry, it is possible to enlarge, observe and photograph various kinds of everyday scenes such as flora and fauna and internal structures of various instruments, It can enhance interest and understanding.

As shown in Figs. 2 to 4, the lens attachment 1 includes a lens block 10, a focus adjusting portion 11, and an attaching portion 12, And a protective cover 14 mounted on the lens attachment body 2. The lens attachment body 2 is supported by a lens holder 13, Hereinafter, the respective members constituting the lens attachment body 2 will be sequentially described.

5 is a schematic view showing the configuration of the lens block 10. Fig. 5, (a) is a perspective view, (b) is a plan view, (c) is a side view, and (d) is a sectional view. The lens block 10 is made of a transparent material and includes an optical instrument part 10A having a semicircular planar shape as shown in Fig. 5 and a cam follower 10A having a substantially quadrangular planar shape (10B) are continuous in the longitudinal direction of the lens block (10). The optical mechanism section 10A is provided with an objective lens section 15 and a light entrance section 16 integrally formed around the objective lens section 15. An optical mechanism section 10A is provided in the entrance section 10B, A coupling portion 17 protruding from the substantially center of the edge 10x on the far side of the lens block 10 to the outside of the lens block 10 is formed.

The objective lens constituting the objective lens section 15 in the optical mechanism section 10A is not particularly limited, and for example, a bi-aspherical surface lens (both-surface aspherical lens) is preferably used. The objective lens is used to appropriately adjust the focal length, lens thickness, effective diameter, work distance (WD), aperture, distance between the photographing apparatus 100 and the objective lens, The enlarged image of about 10 to 300 times the observation object (not shown) can be easily observed or photographed by using the digital zoom function of the photographing apparatus 100 as needed.

The transparent material constituting the objective lens unit 15 is preferably a material having high light transmittance (light transmittance) in a visible light region (visible light region), and examples thereof include polymethylmethacrylate, Polyolefin (COP) and copolymers thereof (COC), polycarbonate, and the like. The objective lens may have a filter function for passing light in a predetermined wavelength range. By providing this filter function, an image other than the visible light region such as an infrared ray image can be selectively observed. More specifically, for example, when the lens attachment body 2 is attached to the photographing apparatus 100 to diagnose the outer wall of a building, not only surface information but also depth information can be obtained have.

The mineralsection 16 is formed around the objective lens section 15 in unison with the objective lens section 15. The mineralsection 16 of the present embodiment is composed of a plurality of groove sections 20 which continuously surround the objective lens section 15 in the form of a toric ring. The plurality of groove portions 20 are formed in a substantially concentric circle shape about the axis (optical axis) of the objective lens portion 15. In the present embodiment, a plurality of trenches 20 are formed, but the present invention is not limited to this, and one trench 20 may be formed. The plurality of grooves 20 are formed concentrically, that is, the distance between the adjacent grooves 20 is substantially constant. However, the present invention is not limited thereto, and the distance between adjacent grooves 20 may be partially . Further, although the groove 20 is formed as a continuous annular shape, it is not limited to this, and it may be formed intermittently, that is, in a dashed line shape.

The groove portion 20 has a V-shape when viewed in cross section and has a first inner side surface (a first inner surface) that is located closer to the objective lens portion 15 than the first inner side surface And a second inner surface 21y which is located farther away from the objective lens unit 15 than the second inner surface 21y. The first and second inner surfaces 21x and 21y are all inclined surfaces having an inclination angle with respect to the thickness direction of the lens block 10. [ The inclination angles of the first and second inner surfaces 21x and 21y are not particularly limited and the inclination angle of the first inner side surface 21x and the inclination angle of the second inner side surface 21y may be different from each other. In the present embodiment, the groove portion 20 has a V-shaped shape when viewed in cross section, but it is not particularly limited as long as it has an inclined inner side surface. As the shape, for example, Shape, and the like.

The light output surface 21 is arranged so as to face the object to be observed when the objective lens unit 15 is disposed so as to face substantially coaxially with the camera lens of the photographing apparatus 100, Reflects light incident from the side direction to the mineralsection 16, or from the direction in which the object to be observed is present, to the mineralsection 16, and is configured to exit mainly toward the object to be observed. Therefore, even if the objective lens section 15 is brought close to the object to be observed in order to obtain an enlarged image of the object to be observed, the light reflected from the light exit surface 21 toward the object to be observed, The amount of light (light amount) in the space of the photographing apparatus 100 is remarkably increased, and the shadow of the photographing apparatus 100 is prevented from being reflected on the display, so that a clear and clear enlarged image of the observation object can be obtained.

In the present embodiment, since the inclination angle of the first inner surface 21x is smaller as it is located farther away from the objective lens 15, it becomes easier to emit the light toward the object and its vicinity, A clearer and clearer enlarged image of the object can be obtained.

The mineralsection 16 may be made of the same transparent material as that of the objective lens section 15 but in the present embodiment is made of a transparent material having higher mechanical strength or rigidity than the transparent material constituting the objective lens section 15 .

The mineralsection 16 also has an objective lens section 15 (not shown) in an area where the internal angle of the objective lens section 15 is about 60 deg. Or more, preferably 60 deg. To 360 deg. And a planar shape corresponding to a substantially circular shape or a substantially regular polygonal shape. With this configuration, it is possible to further equalize the amount of light in the space between the objective lens unit 15 and the object to be observed, thereby obtaining a clearer, clear, and unevenly enlarged image of the object to be observed.

The engaging portion 10B is engaged with a hole 25a formed in a support portion 13 to be described later and the engaging portion 17 is detached and attached by a coupling mechanism (not shown) provided in the hole 25a So that the lens block 10 is connected to and supported by the supporting portion 13. [

In this embodiment, the focus adjustment section 11 is integrated with the support section 13, and the surface of the focus adjustment section 11 becomes a focus adjustment surface (focus adjustment surface) 22 to be focused on the object to be observed . The focus adjustment surface 22 has a drum shape that protrudes in a gentle shape from the periphery to the central portion and has a center portion as a top portion 24. [ The focus adjusting section 11 focuses at least the top of the focus adjusting surface 22 on the surface on which the observation object or the observation object is placed when the lens attachment main body 2 is attached to the photographing apparatus 100 24 are in contact with each other.

Fig. 6 is a side view schematically showing a focus adjusting method by the focus adjusting section 11. Fig. The top portion 24 of the focus adjusting surface 22 of the lens attachment main body 2 attached to the photographing apparatus 100 is placed on the placing surface of the object 101 102). Next, as shown in Fig. 6 (b), the top portion 24 in contact with the placement surface 102 is used as an axis (fulcrum) to move and / or rotate vertically and horizontally as shown by arrows 103 and 104 The objective lens unit 15 can be focused on the observation target 101 by adjusting the distance S between the objective lens unit 15 and the observation target 101. [ This focus adjustment is an example of the seesaw type focus adjustment means (seesaw type focus adjustment means).

The focus adjustment unit 11 can easily adjust the focus without reducing the amount of light in the space between the lens attachment body 2 and the object to be observed 101. However, The focus adjustment may be performed by bringing the photographing apparatus 100 with the lens attachment not provided therein into close proximity to, or detaching from, or rotating the object to be observed 101. It is also possible to use a known focus adjusting member or a focus adjusting mechanism instead of the focus adjusting unit 11.

The focus adjusting section 11 may be formed integrally with the supporting section 13 and the focus adjusting section 11 may be formed as a separate member from the supporting section 13 and the focus adjusting section 11 (Not shown in the figure) of the focus adjusting unit 11 is attached to the mounting surface and the surface opposite to the focus adjusting surface 22 of the focus adjusting unit 11 is bonded, Or may be fixed to the support portion 13 by adhesion by a method such as fusion bonding. Further, the focus adjusting section 11 of the present embodiment has a substantially rectangular planar shape when viewed from the upper surface. However, if the focus adjusting section 11 has a north-type focus adjusting surface 22 whose central portion is the top portion 24, The shape is not particularly limited, and may be any shape such as a circle, an ellipse, a polygon, a trapezoid, and a star.

The attaching portion 12 is a member for attaching the lens attachment body 2 so that it can be attached to and detached from the photographing apparatus 100. In the present embodiment, Position in a direction opposite to the direction of the arrow. The attaching portion 12 of the present embodiment is constituted by an adhesive sheet (adhesive sheet) which can be repeatedly attached and detached. Various commercially available products (commercially available products) can be used as such pressure sensitive adhesive sheets. Examples of commercially available pressure sensitive adhesive sheets include gel sheets, clear attack sheets (all trade names, polyurethane products, EXSEAL CO., LTD. , Ltd.), And the like. The attachment portion 12 is not limited to the adhesive sheet but may be provided with a clip-type attachment portion using, for example, a spring. Such attaching portion is easy to attach and detach to the photographing apparatus 100. [

The supporting portion 13 is a plate-like member for supporting the lens block 10, the focus adjusting portion 11, and the attaching portion 12. [ More specifically, the support portion 13 is provided so as to be continuous with the lens block support portion 25 and supports the focus adjusting portion 11 and the attaching portion 12 And engaging pins 27a and 27b for preventing the protective cover 14 from falling off when the protective cover 14 is mounted on the lens attachment main body 2 Respectively. These are preferably integrally molded.

The lens block supporting portion 25 is formed at one end in the longitudinal direction of the supporting portion 13 and has a hole 25a for engaging the inserting portion 10B of the lens block 10, And a coupling mechanism (not shown) formed inside the hole 25a for coupling the engaging portion 17 of the inserting portion 10B to be detachable. The lens block supporting portion 25 supports the lens block 10 by engaging the engaging portion 10B of the lens block 10 with the hole 25a and also by engaging the engaging portion 17 with the engaging mechanism.

The grip portion 26 is formed so as to be continuous with the lens block support portion 25 in the longitudinal direction of the support portion 13 and has a concave portion 30 for fixing the attachment portion 12 to one surface thereof , The focus adjusting section 11 integrated with the supporting section 13 and the attaching section 12 are separated by the lattice-shaped separating wall 32. The width of the grip portion 26 is smaller than that of the lens block supporting portion 25. In the case where the focus adjusting section 11 is a separate member from the supporting section 13, a separate concave portion facing the concave section 30 is formed with the separating wall 32 therebetween, (11) may be combined and fixed. Of course, the grip portion 26 may be formed in a flat plate shape, and the focus adjusting portion 11 and the attaching portion 12 may be attached to both sides thereof.

The engaging pins 27a and 27b are spaced apart from both edges 26a and 26b along both widthwise edges 26a and 26b of the grip portion 26 from both ends in the width direction of the lens block supporting portion 25 Extends in the vicinity of an end portion of the grip portion 26 on the side opposite to the lens block supporter 25 and has a substantially inverted L shape when viewed in a plan view and a substantially L shape As shown in Fig. The engagement pins 27a and 27b fix the protective cover 14, which will be described later, to the lens attachment body 2 to prevent the engagement therebetween. In addition, convex portions 28a and 28b (28b is not shown in the figure) are formed in the vicinities of the ends on the respective side surfaces of the engaging pins 27a and 27b.

The protective cover 14 is a cap member that is attached to the lens attachment body 2 so as to cover the outer surface of the lens attachment body 2 and protects each member provided in the lens attachment body 2. [ In the present embodiment, the protective cover 14 is configured so that the surface shape of both sides in the thickness direction thereof corresponds to the surface shape of the lens block 10. When the protective cover 14 is made of a transparent material and the above configuration is adopted, the lens attachment 1 with the protective cover 14 mounted thereon is superposed on the photographing apparatus 100, 101 can be observed.

The protective cover 14 of the present embodiment is configured to cover the outer surface of the lens block 10 and the attachment portion 12 and to cover a part of the outer surface of the support portion 13. The protective cover 14 covers the outer surface of the lens attachment main body 2 excluding the focus adjusting portion 11 so that the thickness of the protective cover 14 and the maximum thickness of the lens attachment main body 2 The total thickness of the focus adjusting section 11, the supporting section 13, and the attaching section 12) can be substantially the same. Advantages obtained by this configuration will be described with reference to FIG.

7 is a side view for explaining a method of using the protective cover 14 when the thickness of the protective cover 14 and the maximum thickness of the lens attachment body 2 are substantially equal. The photographing apparatus 100 to which the lens attachment body 2 is attached is arranged so that the top portion 24 of the focus adjustment surface 22 of the focus adjustment portion 11 is in contact with the placement surface 102 of the observation target 101 . The protective cover 14 is disposed between the photographing apparatus 100 and the placement surface 102 at a position apart from the contact portion of the top portion 24 with the placement surface 102. That is, the protective cover 14 is used as a mount of the photographing apparatus 100.

As described above, if the protective cover 14 is used as a tooth, the enlarged image of the object to be observed can be seen in a stable state without adjusting the focus of the objective lens unit 15 in some cases. Further, since the protective cover 14 is not fixed to the photographing apparatus 100 and the placement surface 102, fine adjustment of the focus can be easily performed when the focus adjustment section 11 is in the shape of a drum. In addition, even if the outer surface of the focus adjusting section 11 is not protected, since the entire surface of the focus adjusting section 11 has substantially the same thickness, the damage to the outer surface of the focus adjusting section 11 is reduced There are advantages.

The engaging holes 29a and 29b (29b are not shown in the figure) are formed on both sides in the width direction of the protective cover 14 at positions corresponding to the positions where the convex portions 28a and 28b of the supporting portion 13 are formed, The protective cover 14 is fixed to the lens attachment body 2 even when the convex portions 28a and 28b and the engagement holes 29a and 29b are engaged with each other.

A strap attachment hole 40 for removing the lens attachment 1 from a pocket or a bag is provided at the distal end portion of the protective cover 14 opposite to the mounting direction with respect to the lens attachment body 2 However, the strap attachment hole 40 may or may not be provided.

The protective cover 14 of the present embodiment is formed so as to cover the outer surface of the lens attachment main body 2 except for the focus adjusting portion 11, Or may be formed so as to cover the entirety.

When the object to be observed 101 is magnified and observed, the scale part is displayed on the display together with the object to be observed 101, for example, on the surface of the protective cover 14, It is possible to confirm the enlargement magnification or to measure the approximate dimensions of the detailed structure inside the observation object 101 by focusing on the necessity in view.

Fig. 8 is a perspective view schematically showing the configuration of another type of protective cover 14A. The protective cover 14A has the same configuration as that of the protective cover 14 except that the surface shape on both sides in the thickness direction is a flat surface.

One embodiment for using the lens attachment 1 for measuring the scale length of the object to be observed (scale length measurement) will be described. In the present embodiment, the lens attachment 1 is provided with a scale gauge as its accessory. The scale gauge may be a structure in which a scale is stamped or printed and a regular shape even if it is a printed matter. First, a ruler is manufactured by receiving an image of scale gauge by the image pickup apparatus 100 used together with the lens attachment 1, and stored in the image pickup apparatus 100 as a transparent image. Next, when an enlarged image of the observation object is observed on the display, a transparent image of the ruler is superimposed on the enlarged image, so that the scale length of the observation object can be easily measured.

An application including a step of receiving a ruler image as a transparent image by accepting an image of scale gauge as described above, and a process of calling transparent images of rulers and superimposing them on an enlarged image of the object to be observed on the display, The scale of the observation object can be clearly confirmed.

9 is a side view schematically showing the configuration of another type of lens attachment 3. The members common to the lens attachment 1 in the lens attachment 3 are denoted by the same reference numerals as those of the lens attachment 1, and a description thereof will be omitted. The lens attachment 3 is characterized in that it includes an optical mechanism 36 having a semicircular planar shape and a lens block 35 as a plate-like member in which an indentation portion having a substantially rectangular planar shape is integrated . The optical mechanism section 36 includes an objective lens section (not shown) and a mining section integrally formed around the objective lens section. The mining section 37, like the mining section 16, (Not shown) that are spaced apart from each other and extend in a substantially concentric circle shape and are larger in diameter than the mining section 16 and at least partly protruded outward from the photographing apparatus 100 .

When the photographing apparatus 100 having the main body of the lens attachment 3 is viewed from above, at least a part of the mining section 37 is arranged in the longitudinal direction And project in the width direction. That is, a part of the miner 37 is projected to a position where it is not blocked by the photographing apparatus 100 from the outside of the photographing apparatus 100. As described above, since the miner 37 protrudes outward from the image pickup apparatus 100, the light is not disturbed by the image pickup apparatus 100, and ambient light can be received in the space between the objective lens unit and the object to be observed. It is possible to further improve the image quality (clarity and sharpness) of the enlarged image.

In the present embodiment, a part of the mining section 37 is configured to protrude in the longitudinal direction and the width direction of the photographing apparatus 100, but the present invention is not limited to this, and the mining section 37 may be configured to protrude only in the longitudinal direction or only in the width direction have.

10 is a side view schematically showing the configuration of the lens attachment 4 of another type. The lens attachment 4 has a transparent plate 33 attached to the top portion 24 of the focus adjustment surface 22 of the focus adjustment portion 11 in addition to the configuration of the lens attachment 1 . The transparent plate 33 is structured so that one end portion 33a is illuminated on the periphery of the enlarged image of the object to be observed on the display. In the transparent plate 33, the surface of the one end portion 33a facing the object to be observed is provided with a scale (not shown) in the longitudinal direction and / or the width direction of the transparent plate 33 so as to correspond to the enlarged image on the display Scale) 34 are formed. The transparent plate 33 is made of, for example, transparent plastic. With this configuration, since the scale of the observation object can be measured almost accurately and very easily, the lens attachment of the present invention can be used not only for simple microscopic use but also as a basic preliminary research device.

Although the embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the embodiment described above, but may be modified appropriately within the scope of the present invention.

1, 3, 4: Lens attachment
2: lens attachment body
10, 35: Lens block
10A and 36:
10B:
11:
12:
13: Support
14, 14A: protective cover
15:
16, 37: mining part
17:
20: Groove
21: light emitting surface
21x: First inner side
21y: second inner side
22: Focus adjustment surface
24: Top
25: Lens block support
26:
27a and 27b:
28a, 28b:
29a, 29b: engaging hole
30:
32: separating wall
33: transparent plate
40: Strap mounting hole
100:
101: object to be observed
102:

Claims (10)

A camera lens,
An imaging element,
A display for displaying an image of an observation object captured by the camera lens,
1. A lens attachment attached to a photographing apparatus so as to be attachable and detachable,
A lens block including a transparent material and including an objective lens part and a mining part integrally formed around the objective lens part;
An attaching portion (attachment portion) for attaching the lens attachment to be detachable to the photographing apparatus,
And a supporting portion (supporting portion) for supporting the lens block and the attaching portion
At least,
Wherein the light minuter has a light output surface and when the objective lens unit is mounted on the photographing apparatus in such a manner as to face the camera lens coaxially with the camera lens, Wherein the first and second lens arrays are arranged to face each other.
The method according to claim 1,
Wherein at least a part of the mining unit is protruded to a position where the mining unit does not block the outside of the photographing apparatus by the photographing apparatus when the lens attachment is attached to the photographing apparatus.
3. The method according to claim 1 or 2,
Wherein the mining portion has a groove portion that continuously or intermittently rotates around the objective lens portion,
Wherein the groove portion has the first inner side surface (first inner side surface) located on the side closer to the objective lens portion than the light output surface and the second inner side surface located on the relatively far position side, 1 and the second inner surface is an inclined surface having an inclination angle (inclination angle) with respect to the thickness direction of the lens block.
The method of claim 3,
Wherein the inclination angle of the first inner side surface decreases as the first inner side surface is located farther from the objective lens unit.
The method according to claim 3 or 4,
And the plurality of grooves are concentrically formed around an axis of the objective lens unit.
6. The method according to any one of claims 1 to 5,
And a focus adjusting part (a focus adjusting part) supported by the supporting part,
Wherein the focus adjustment section has a drum shape whose surface opposite to the attachment surface of the support section protrudes in a gentle manner from a periphery thereof toward a central portion thereof.
7. The method according to any one of claims 1 to 6,
And a protective cover mounted to cover the outer surface of the lens block, the attachment portion, and the support portion supported by the support portion.
8. The method according to any one of claims 1 to 7,
Wherein the focus adjustment portion and the attachment portion are opposed to each other with the support portion interposed therebetween, and the sum of the thicknesses of the focus adjustment portion, the support portion, and the attachment portion is equal to the thickness of the protective cover.
9. The method according to any one of claims 1 to 8,
Wherein the mineralsection has a planar shape corresponding to a circle or a regular polygon coaxial with the objective lens portion in an area having an internal angle of 60 degrees or more around the axis of the objective lens portion.
10. The method according to any one of claims 1 to 9,
The photographing apparatus may be a digital camera, a digital still camera, a digital camcoder, a mobile phone with a camera, or a smartphone.

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