JP2007212497A - Optical equipment with pupil distance adjustment function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide optical equipment with a pupil distance adjustment function of adjusting a reticle angle at one's desire. <P>SOLUTION: The optical equipment with the pupil distance adjustment function comprises an ocular optical part 10A provided with an ocular optical system 11, a pair of lens barrels 2A, 2B having an objective optical part 12 provided with an objective optical system 13, and a supporter 3 for supporting them, and rotatably composes at least one lens barrel by making the supporter 3 a center shaft. In the optical equipment 1 with the pupil distance adjustment function, the ocular optical part provided on at least one rotatable lens barrel comprises the reticle 20, a reticle rotation means 40 for rotating the reticle 20 by storing the reticle 20 and regarding an optical axis 2C of the ocular optical system 11 as a center axis, and a reticle rotation operation means 70 for rotating the reticle rotation means 40 by being provided in a rotational direction of the optical axis and being engaged with the reticle rotation means 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical apparatus with an eye width adjustment function, and more particularly, to an optical apparatus with an eye width adjustment function capable of adjusting the angle of a reticle as desired.

  Optical instruments such as a still camera, video camera, and binoculars are equipped with a reticle equipped with a reticle that can measure the length of the target object and / or the distance to the target object as necessary. There are optical equipment. For example, as shown in FIG. 7, when the distance to the target object is 1000 m, this reticle is orthogonal so that 1 m at that point corresponds to one unit. A scale line is engraved and fixed at a predetermined position in the optical apparatus, for example, a focal position of an eyepiece.

  Further, the optical apparatus includes a pair of lens barrels, and adjusts the distance between the pair of lens barrels, that is, the distance between the optical axes of the lens barrels, according to the distance between the eyes (eye width) of the user. There is an optical device with an eye width adjustment function that can be performed (for example, see Patent Document 1). The eye width adjustment function is centered on a slide type that relatively translates the optical axes of a pair of lens barrels in the horizontal direction and a rotation shaft provided between the pair of lens barrels, as in the binoculars described in Patent Document 1. There is a rotation type that rotates a pair of lens barrels. Also in these optical devices with an eye width adjustment function, a reticle is mounted as necessary.

  However, an optical apparatus equipped with a rotation type eye width adjustment function adjusts the distance between the lens barrels by rotating the pair of lens barrels as desired according to the eye width of the user. The fixed reticle rotates with the lens barrel rotated as desired according to the eye width of the user with individual differences, and accordingly, the direction of the horizontal scale and the vertical scale is also rotated. As a result, the reticle There is a problem that the direction of the scale does not accurately correspond to the horizontal direction and the vertical direction in use.

  Moreover, the target object observed using an optical apparatus is not necessarily in the horizontal direction and the vertical direction, and may be inclined from the horizontal plane at a predetermined angle, for example. Therefore, there is also a problem that the horizontal scale and / or vertical scale of the reticle does not coincide with the tilted target object.

  In an optical instrument with an eye width adjustment function having such a problem, the horizontal scale and / or vertical scale of the reticle does not exactly match the horizontal and vertical directions or the target object in use. The function of the reticle for measuring the length and / or the distance to the target object is not sufficiently exhibited, and the measured length of the target object and the distance to the target object become inaccurate. In addition, in order to accurately measure the length of the target object and the distance to the target object using an optical device having an eye width adjustment function having such a problem, the user can measure the horizontal scale and / or vertical of the reticle. If the scale is made to exactly match the horizontal and vertical directions or the target object in use, it is necessary to take an unreasonable posture, which imposes an excessive burden on the user.

JP 2005-338295 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide an optical apparatus with an eye width adjustment function that can solve such a conventional problem and can adjust the angle of a reticle as desired.

As means for solving the above problems,
The present invention includes a pair of lens barrels each having an eyepiece optical unit equipped with an eyepiece optical system and an objective optical unit equipped with an objective optical system, and a support body that supports the pair of lens barrels. Is an optical device with an eye width adjustment function in which at least one lens barrel is configured to be rotatable about a central axis, and an eyepiece optical unit provided in at least one of the rotatable lens barrels includes a reticle, A reticle rotating means for storing the reticle and rotating the reticle about the optical axis of the eyepiece optical system; and a rotatable means for rotating the reticle about the optical axis. An optical device with an eye width adjustment function, comprising: a reticle rotation operation unit that engages and rotates the reticle rotation unit;
According to a second aspect of the present invention, the reticle rotating means accommodates the eyepiece optical system inside and mounts the reticle so as to be rotatable about the optical axis, and the eyepiece inner cylinder An eyepiece inner cylinder that includes an eyepiece inner cylinder rotation restricting means for restricting rotation to a predetermined rotation amount, accommodates the eyepiece inner cylinder therein, and is not rotatable in the optical axis rotation direction; 2. The optical device with an eye width adjustment function according to claim 1, wherein the optical device includes an eyepiece inner cylinder and an engagement unit that engages the reticle rotation operation unit.
According to a third aspect of the present invention, the eyepiece inner cylinder accommodates the reticle, the first eyepiece inner cylinder provided with the engaging means, the eyepiece optical system is accommodated therein, and the eyepiece optical system moves to the outer peripheral surface. A second eyepiece inner cylinder having means, and the eyepiece outer cylinder has eyepiece optical system moving means cooperating with the eyepiece optical system moving means on an inner peripheral surface thereof, with the optical axis as a central axis The first eyepiece inner cylinder is accommodated so as to be rotatable, and the second eyepiece inner cylinder is accommodated so as to be rotatable about the optical axis and movable forward and backward in the optical axis direction. It is an optical instrument with an eye width adjustment function according to claim 2,
According to a fourth aspect of the present invention, the eyepiece optical unit is mounted such that the reticle rotation operation means can be moved forward and backward in the optical axis direction, and the reticle rotation operation is performed between the reticle rotation operation means and the eyepiece outer cylinder. Reticle non-rotating operation means that is integrated with the operating means so as to be able to move forward and backward in the optical axis direction and has reticle non-rotating means that disables rotation of the reticle rotating operation means; 4. A locking means provided with a non-movable means at a predetermined interval and having a locking means locking portion that locks with the reticle rotation impossible means. Or an optical device with an eye width adjustment function according to claim 1,
5. The optical apparatus with an eye width adjustment function according to claim 5, wherein the optical apparatus with an eye width adjustment function is a center focus type binoculars or an eyepiece single-feed-out type binoculars. It is an optical instrument.

  According to the present invention, the eyepiece optical unit in the optical apparatus with an eye width adjustment function includes the reticle, the reticle rotating means, and the reticle rotating operation means, so that the reticle rotating operation means is rotated about the optical axis. As a result, the reticle turning means engaged with the reticle turning operation means is rotated in the same direction as the reticle turning operation means. As a result, the reticle stored in the reticle turning means is rotated by the reticle. Integrates with the moving means and rotates in the same direction. Therefore, according to the present invention, it is possible to provide an optical apparatus with an eye width adjustment function capable of adjusting the angle of the reticle as desired by operating the reticle turning operation means.

  Further, according to the present invention, the reticle rotating means includes the eyepiece inner cylinder, the eyepiece outer cylinder, and the engaging means. Therefore, by rotating the reticle rotating operation means about the optical axis, The eyepiece inner cylinder rotates in the same direction as the reticle rotation operation means and the engagement means through the engagement means engaged with the rotation operation means, and as a result, is attached to the eyepiece inner cylinder. The reticle rotates integrally with the eyepiece inner tube in the same direction. Therefore, according to the present invention, it is possible to provide an optical apparatus with an eye width adjustment function that can adjust the angle of the reticle as desired with a simple structure.

  Further, according to the present invention, the eyepiece inner cylinder accommodated in the eyepiece outer cylinder includes the first eyepiece inner cylinder and the second eyepiece inner cylinder, and the eyepiece optical system movement of the second eyepiece inner cylinder. The second eyepiece inner cylinder housing the eyepiece optical system can be moved back and forth in the optical axis direction by the means and the eyepiece optical system moving means of the outer eyepiece tube, and the amount of movement of the eyepiece optical system can be set as desired. Since it can be adjusted, the diopter can be adjusted as desired.

  Further, according to the present invention, the eyepiece optical unit includes the reticle rotation impermissible operation means and the locking means, and therefore, after adjusting the reticle angle as desired, the reticle rotation operation means is moved to the optical axis. By moving forward in the direction, the reticle rotation impossible operation means and the locking means are locked, the reticle can be fixed at a desired angle, and by moving the reticle rotation operation means backward in the optical axis direction, The reticle can be unlocked.

  Binoculars, which is an example of an optical device with an eye width adjustment function, according to an embodiment of the present invention will be described with reference to the drawings. 1 and 2 are cross-sectional views of the main part. In FIG. 1, hatching other than the eyepiece optical unit 10A is omitted.

  As shown in FIG. 1, the binoculars 1 includes a pair of lens barrels 2 </ b> A and 2 </ b> B and a support body 3. Each of the pair of lens barrels 2A and 2B has an eyepiece optical section 10A and 10B equipped with an eyepiece optical system 11 attached to one end thereof, and an objective optical section 12 equipped with an objective optical system 13 attached to the other end. The optical axis of the eyepiece optical system 11 and the optical axis of the objective optical system 13 coincide with each other. That is, the eyepiece optical unit 10A, the lens barrel 2A, the objective optical system 13 (not shown), and the objective optical unit 12 have the same optical axis 2C, and similarly, the eyepiece optical unit 10B, the lens barrel 2B, and the objective optical system. 13 and the objective optical unit 12 have the same optical axis 2D. The eyepiece optical system 11 and the objective optical system 13 are each composed of one or two or more eyepiece lenses or objective lenses. As the material of the eyepiece or objective lens, a known material used for the eyepiece or objective lens can be used. The lens barrels 2A and 2B, the objective optical system 13, and the objective optical unit 12 are generally cylindrical bodies having a substantially circular cross section perpendicular to the optical axes 2C and 2D. The support 3 supports the pair of lens barrels 2A and 2B at a substantially central portion, and has a central axis 3A that is substantially balanced with the optical axes 2C and 2D of the pair of lens barrels 2A and 2B. The lens barrels 2A and 2B and the support body 3 have a built-in center focus mechanism capable of simultaneously adjusting the focus of the lens barrels 2A and 2B. Since the center focus mechanism can be achieved by a known configuration, description thereof is omitted.

  The binoculars 1 are configured such that at least one of the lens barrels 2A or 2B is rotatable with respect to the other lens barrel 2B or 2A with the central axis 3A of the support 3 as the central axis. Accordingly, the optical axis 2C of the lens barrel 2A and the optical axis 2D of the lens barrel 2B are maintained in a parallel state by rotating at least one of the lens barrels 2A or 2B in the circumferential direction around the central axis 3A. However, they can be close to each other or isolated. Since the binoculars 1 have the eye width adjustment function configured as described above, a pair of eyeglasses 2C, the central axis 3A, and the optical axis 2D are changed in accordance with the eye width of the user while changing the angle formed by the pair of eyes. The distance between the lens barrels 2A and 2B, that is, the distance between the optical axes 2C and 2D of the lens barrels 2A and 2B can be adjusted as desired. The binoculars 1 may be configured such that both the lens barrel 2 </ b> A and the lens barrel 2 </ b> B are rotatable about the support 3.

  As shown in FIGS. 1 and 2, in the binoculars 1, the eyepiece optical unit 10 </ b> A provided in one of the lens barrels 2 </ b> A includes a reticle 20, a reticle rotating unit 40, and a reticle rotating operation unit 70. A reticle angle adjusting mechanism 4 is provided.

  For example, as shown in FIG. 7, the reticle 20 is made of a transparent resin or glass thin plate, for example, when the distance to the target object is 1000 m, 1 m at that point is one unit of the scale line. Correspondingly, an orthogonal graduation line 21 is engraved at a substantially central portion.

  The reticle rotation means 40 accommodates the reticle 20 and rotates the reticle 20 about the optical axis 2C of the eyepiece optical system 10A. Specifically, as shown in FIGS. 1 and 2, the reticle rotating means 40 accommodates the eyepiece optical system 11 and mounts the reticle 20, and can rotate about the optical axis 2C as a central axis. The eyepiece inner cylinder 41 and the eyepiece inner cylinder rotation restricting means 51 for restricting the rotation of the eyepiece inner cylinder 41 to a predetermined rotation amount are housed inside, and are rotated around the optical axis. The eyepiece outer cylinder 50 is immovable, and the engagement means 65 is provided on the eyepiece inner cylinder 41 and engages the eyepiece inner cylinder 41 and the reticle rotation operation means 70.

  As shown in FIGS. 1 and 2, the inner eyepiece tube 41 is a cylindrical body having a substantially circular cross section, and both end portions are open. The eyepiece inner cylinder 41 has an engagement means hole 42 into which the engagement means 65 is press-fitted on the peripheral side surface. Further, at one end of the eyepiece inner cylinder 41, a regulating piece 43 that regulates the pop-out of the eyepiece optical system 11 is provided so as to protrude in the central direction over the circumferential direction. The eyepiece inner cylinder 41 accommodates the eyepiece optical system 11 in a predetermined position by a regulating piece 43 and an annular ball-opening presser 44 having an outer diameter slightly larger than the inner diameter of the eyepiece inner cylinder 41.

  As shown in FIGS. 1 and 2, the reticle 20 is inserted into an annular reticle frame 22 having an inner diameter slightly smaller than the outer diameter of the reticle 20 and having a convex portion protruding in the central direction at one end. An annular reticle holder 23 is inserted and fixed to the reticle frame 22. The reticle frame 22 is sandwiched between an annular reticle outer frame 24 mounted on the eyepiece inner cylinder 41 and an annular reticle frame presser 25 via a washer 27, for example, a washer. Further, an outer peripheral surface of the reticle outer frame 24 An annular reticle outer frame presser 26 is attached to and firmly fixed. In this way, the reticle 20 is mounted on the eyepiece inner cylinder 41.

  As shown in detail in FIGS. 1 and 2, particularly FIG. 3, the eyepiece outer cylinder 50 is a cylindrical body having a substantially circular cross section having the same inner diameter as the outer diameter of the eyepiece inner cylinder 41, and both ends are open. is doing. The eyepiece outer tube 50 extends on the outer peripheral surface corresponding to the engagement means hole 42 when the eyepiece inner tube 41 is accommodated so as to have a predetermined central angle θ in the circumferential direction in the vertical cross section with respect to the optical axis 2C. The eyepiece inner tube rotation restricting means 51 for restricting the rotation of the eyepiece inner tube 41 to a predetermined rotation amount, for example, as clearly shown by FIG. 3A, the central angle θ (in FIG. A slit-like cam hole 60 extending at 150 ° and penetrating from the outer peripheral surface to the inner peripheral surface is formed. The eyepiece inner cylinder rotation restricting means 51 restricts the amount of rotation of the engaging means 65 described later by the circumferential length thereof, and the amount of rotation of the eyepiece inner cylinder 41 engaged with the engaging means 65 is predetermined. The amount of rotation is regulated. The eyepiece outer tube 50 is formed with an enlarged diameter insertion portion 52 to be inserted into the lens barrel 2 </ b> A at one end, and between the eyepiece inner tube rotation restricting means 51 and the insertion portion 52. In addition, a flange 53 is formed in contact with the end of the lens barrel 2A.

  As shown in FIGS. 1 and 2, the engaging means 65 penetrates the eyepiece inner cylinder rotation restricting means 51 and engages the eyepiece inner cylinder 41 located on both sides thereof and a reticle rotation operating means 70 described later. To do. The engaging means 65 only needs to be able to engage the eyepiece inner cylinder 41 and the reticle rotating operation means 70, and may be, for example, a rod-like body, a columnar body, a cone-like body, or the like. The engaging means 65 only needs to be formed in a length and size that protrudes from the outer peripheral surface of the eyepiece outer cylinder 50 when it is attached to the eyepiece inner cylinder 41. As an example of the engagement means 65, FIGS. 1 and 2 show a rod-shaped body 66 having an enlarged head.

  The reticle rotating operation means 70 is provided so as to be rotatable about the optical axis 2C as a central axis. In the reticle rotating means 40, the binoculars 1 shown in FIGS. Then, the reticle rotating means 40 is rotated. The reticle turning operation means 70 is inserted into the head of the rod-shaped body 66, and an engagement groove 71 that engages with the rod-shaped body 66 extends in the axial direction and is provided on the inner peripheral surface 72; And an outer ring 73 having an inner diameter substantially the same as the outer diameter of the inner ring 72. As shown in FIG. 2, the outer ring 73 is provided with a locking portion 74 that locks with a holding cylinder 54 to be described later so as to protrude in the central direction from one end surface over the circumferential direction. In the binoculars 1, the reticle turning operation means 70 is an annular body having an inner ring 72 and an outer ring 73.

  The eyepiece optical unit 10A is configured as shown in FIGS. That is, the eyepiece inner tube 41 is housed in the eyepiece outer tube 50 with the eyepiece optical system 11 housed therein and the reticle 20 mounted, and the outer surface of the eyepiece inner tube 41 and the eyepiece outer tube 50 inside. The peripheral surface is in contact.

  The eyepiece outer tube 50 has a collar 53 in the lens barrel 2A at one end of the lens barrel 2A in a state where the eyepiece inner tube 41 is rotatably accommodated therein or in a state where the eyepiece inner tube 41 is not accommodated. It is inserted and attached to the lens barrel 2A until the insertion portion 52 comes into contact with the end of the lens barrel 2A. Therefore, the eyepiece outer cylinder 50 is not rotatable about the optical axis 2C as a central axis.

  As shown in FIGS. 1 and 2, the rod-shaped body 66 penetrates the eyepiece inner tube rotation restricting means 51 of the eyepiece outer tube 50, and the head of the rod-shaped body 66 contacts the outer peripheral surface of the eyepiece outer tube 50. It is press-fitted into the engagement means hole 42 formed on the outer peripheral surface of the eyepiece inner tube 41 until it comes into contact or has a slight gap, and is attached to the eyepiece inner tube 41.

  Thereby, the eyepiece outer cylinder 50 is fixed to the end of the lens barrel 2A, the eyepiece inner cylinder 41 engages with the rod-like body 66, and is not fixed to other members. By moving in the movement restricting means 51, the eyepiece inner tube 41 is housed in the eyepiece outer tube 50 so as to be rotatable integrally with the rod-like body 66 about the optical axis 2C as a central axis.

  The reticle turning operation means 70 is used to turn the reticle mounted on the lens barrel 2 </ b> A so that the head of the rod-like body 66 protruding from the outer peripheral surface of the eyepiece outer tube 50 engages with the engaging groove 71 of the inner ring 72. The means 40 is arranged on the outer periphery of the eyepiece outer cylinder 50 and is mounted with the outer peripheral surface of the eyepiece inner cylinder 50 and the inner surface of the inner ring 72 in contact with each other or with a slight gap. The reticle turning operation means 70 is mounted such that the locking portion 74 of the outer ring 73 is locked to the distal end portion of the holding cylinder 54 and does not come off from the outer periphery of the eyepiece outer cylinder 50. Thereby, the reticle rotation operation means 70 is rotatable about the optical axis 2C.

  The reticle angle adjusting mechanism 4 configured as described above is provided with a cylindrical rubber cover 14 so as to cover the outside. The cover 14 also has a function of protecting the user's eyes during use.

  The operation of the thus configured reticle angle adjustment mechanism 4 will be described. The binoculars 1 rotate the lens barrel 2A and / or the lens barrel 2B by a predetermined amount according to the eye width of the user, and adjust the distance between the pair of lens barrels 2A and 2B as desired.

  In order to adjust the angle of the reticle 20, first, the reticle rotation operation means 70 is rotated about 2C as the central axis. When the reticle turning operation means 70 is turned, the rod-like body 66 inserted into the engaging groove 71 formed in the inner ring 72 of the reticle turning operation means 70 and engaged with the reticle turning operation means 70 is outside the eyepiece. The inside of the cam hole 60 is integrated with the reticle rotation operation means 70 within the range of the circumferential length of the eyepiece inner cylinder rotation restricting means 51 (cam hole 60) drilled in the cylinder 50. Rotate in the direction. Here, since the eyepiece outer cylinder 50 is mounted on the lens barrel 2A so as not to rotate, the cam hole 60 of the eyepiece outer cylinder 50 does not rotate by the rotation of the reticle rotation operation means 70. The range in which the rod-like body 66 rotates is always constant (as described above, the binoculars 1 rotate within the range of the central angle θ of 150 °). When the rod-like body 66 is rotated, the eyepiece inner tube 41 fitted with the rod-like body 66 press-fitted into the engagement means hole 42 is also rotated integrally with the rod-like body 66 in the same direction. In other words, the eyepiece inner cylinder 41 is integrated with the rod-like body 66 and the reticle rotation operation means 70 and rotates in the same direction. When the eyepiece inner cylinder 41 rotates, the reticle 20 mounted on the eyepiece inner cylinder 41 rotates together with the eyepiece inner cylinder 41 in the same direction. When the reticle 20 rotates and reaches a desired angle, the rotation of the reticle rotation operation means 70 is stopped.

  Thus, according to the binoculars 1, the angle of the reticle 20 can be adjusted as desired with a simple structure. Therefore, even if the pair of lens barrels 2A and 2B is rotated as desired according to the eye width of the user and the distance between the lens barrels is adjusted, the reticle 20 can be rotated. The scale 20 engraved on the reticle 20 can be adjusted to the target object as desired. As a result, the length of the target object and the distance to the target object can be accurately determined. In addition, it does not impose an excessive burden on the user.

  As shown in FIG. 1, the eyepiece optical unit 10 </ b> B of the lens barrel 2 </ b> B in the binoculars 1 is provided with a known diopter adjustment mechanism, for example, a diopter adjustment mechanism described in JP-A-2005-301078.

  Next, a binocular 100 that is another example of an optical apparatus with an eye width adjustment function according to an embodiment of the present invention will be described with reference to the drawings. 4 and 5 are main-part cross-sectional views. In FIG. 4, hatching other than the eyepiece optical unit 10C is omitted.

  As shown in FIG. 4, the binoculars 100 are basically configured in the same manner as the binoculars 1 and are different from the binoculars 1 in that an eyepiece optical unit 10C is provided instead of the eyepiece optical unit 10A of the lens barrel 2A. Therefore, the description of the same configuration and function as the binoculars 1 is omitted. 4 and 5, members denoted by the same reference numerals as those in FIGS. 1 to 3 are basically the same members as the members of the binoculars 1.

  As shown in FIGS. 4 and 5, the binocular 100 includes an eyepiece optical unit 10 </ b> C provided in one of the lens barrels 2 </ b> A including a reticle 20, a reticle rotating unit 120, and a reticle rotating operation unit 110. A reticle angle adjustment / angle fixing and diopter adjustment mechanism 5 is provided.

  The reticle rotating means 120 accommodates the reticle 20 and rotates the reticle 20 about the optical axis 2C of the lens barrel 2A. Specifically, as shown in FIGS. 4 and 5, the reticle rotating means 120 accommodates the eyepiece optical system 11 and is mounted with the reticle 20, and can rotate about the optical axis 2 </ b> C as a central axis. The eyepiece inner cylinder 130 and the eyepiece inner cylinder rotation restricting means 51 for restricting the rotation of the eyepiece inner cylinder 130 to a predetermined rotation amount are housed inside, and the optical axis is the central axis. The eyepiece outer tube 140 cannot be rotated, and the engagement means 65 is provided on the eyepiece inner tube 130 and engages the eyepiece inner tube 130 and the reticle rotation operation unit 110.

  More specifically, as shown in FIGS. 4 and 5, the eyepiece inner cylinder 130 accommodates the reticle 20 and includes the first eyepiece inner cylinder 131 having the engagement means 65 and the eyepiece optical system 11. The eyepiece outer tube 140 is housed inside and has a second eyepiece inner tube 132 having an eyepiece optical system moving means 133 on the outer peripheral surface, and the eyepiece outer tube 140 is an eyepiece that cooperates with the eyepiece optical system moving means 133 on the inner peripheral surface thereof. It has an optical system moving means 141, houses the first ocular inner tube 131 so as to be rotatable about the optical axis 2C, and is rotatable about the optical axis 2C and forward and backward in the optical axis direction. The second eyepiece inner tube 132 is housed in a possible manner.

  Further, as shown in FIGS. 4 and 5, the eyepiece optical unit 10 </ b> C has the reticle rotation operation unit 110 mounted so as to be able to move forward and backward in the optical axis direction, and the reticle rotation operation unit 110 and the eyepiece outer tube 140. The reticle rotation operation unit 110 is integrated with the reticle rotation operation unit 110 so that the reticle rotation operation unit 110 can be moved back and forth in the optical axis direction, and the reticle rotation operation unit 110 cannot be rotated. The operation unit 150 includes a locking unit 160 that is provided at a predetermined interval from the reticle rotation impermissible unit 153 and has an impermissible unit locking part 161 that engages with the reticle rotation impermissible unit 153.

  The reticle angle adjustment / angle fixing and diopter adjustment mechanism 5 is configured in this way. The reticle angle adjustment / angle fixing and diopter adjustment mechanism 5 will be described in detail below.

  As shown in FIGS. 4 and 5, the second ocular inner tube 132 is a substantially circular cylindrical body having both ends opened as in the case of the ocular inner tube 41. A regulation turning piece 134 that regulates the projection of the system 11 and rotates the eyepiece optical system 11 is provided so as to protrude in the center direction in the circumferential direction. Further, the second eyepiece inner cylinder 132 is formed with an eyepiece optical system moving means 133, for example, a first screw such as a male screw, on the outer peripheral surface thereof. The second eyepiece inner cylinder 132 houses the eyepiece optical system 11 at a predetermined position by the regulation turning piece 134 and the open ball presser 44.

  As shown in FIGS. 4 and 5, the first inner eyepiece tube 131 is a cylindrical body having a substantially circular cross section, and both end portions are open. The first eyepiece inner cylinder 131 has an engagement means hole 42 into which the engagement means 65 is press-fitted on the peripheral side surface. In addition, a restriction piece 135 that restricts the protrusion of the reticle frame 22 is provided at one end portion of the first eyepiece inner cylinder 131 so as to protrude in the center direction in the circumferential direction.

  The reticle 20 is basically the same as the reticle 20 in the binoculars 1. As shown in FIGS. 4 and 5, this reticle 20 is inserted into an annular reticle frame 22 as in the case of the binoculars 1, and further, an annular reticle presser 23 is inserted, and the reticle frame 22 and the reticle presser are inserted. 23 and is fixed to the reticle frame 22. The reticle frame 22 is sandwiched between the restriction piece 135 and the reticle frame presser 136 and is firmly fixed to the first eyepiece inner cylinder 131.

  As described above, the eyepiece inner cylinder 130 includes the first eyepiece inner cylinder 131 and the second eyepiece inner cylinder 132, accommodates the eyepiece optical system 10C therein, and is mounted with the reticle 20.

  As shown in FIGS. 4 and 5, the eyepiece outer tube 140 is formed basically in the same manner as the eyepiece outer tube 50, and the eyepiece inner tube rotation restricting means 51, for example, the cam hole 60 is formed on the outer peripheral surface thereof. Is formed, and an insertion portion 52 is formed at one end, and a flange 53 is formed between the cam hole 60 and the insertion portion 52. The eyepiece inner cylinder rotation restricting means 51 restricts the amount of rotation of the engaging means 65 by the length in the circumferential direction, and the amount of rotation of the first eyepiece inner cylinder 131 engaged with the engaging means 65 is determined. The amount of rotation is regulated to a predetermined amount.

  As shown in FIGS. 4 and 5, the eyepiece outer tube 140 engages with an engagement piece 155 described later on its outer peripheral surface, and fixing grooves 142 </ b> A and 142 </ b> B for fixing a reticle rotation impermissible operation means 150 described later. Are provided so as to make a round in the circumferential direction on the outer peripheral surface at a predetermined interval. The fixing grooves 142A and 142B are formed to have a thickness and a depth that allow engagement pieces 155 described later to be engaged. Further, the eyepiece outer tube 140 is formed with an eyepiece optical system moving means 141 cooperating with the eyepiece optical system moving means 133 on the inner peripheral surface thereof, for example, a second screw such as a female screw.

  The engaging means 65 is basically the same as the engaging means 65 in the binoculars 1, and as shown in FIGS. 4 and 5, the engaging means 65 penetrates through the eyepiece inner tube rotation restricting means 51 and is located on both sides thereof. One eyepiece inner cylinder 131 is engaged with a reticle rotation operation means 110 via a reticle rotation disable operation means 150 described later.

  The reticle non-rotatable operation means 150 has a cylindrical body having both ends opened and a substantially circular cross section. The reticle non-rotating operation means 150 has a barrel portion having a constant inner diameter, an inner diameter that is smaller than the barrel portion from the barrel portion to one end portion, and substantially coincides with the outer diameter of the eyepiece outer tube 140. A reduced diameter portion 151 having an inner diameter and a flange-shaped flange 152 having an enlarged diameter are provided in the vicinity of the other end portion. On the surface of the flange 152 opposite to the body, a reticle non-rotating means 153, for example, a locking portion such as a plurality of teeth and protrusions, is formed over the entire circumference. When the reticle non-rotating operation means 150 is arranged on the outer periphery of the eyepiece outer cylinder 150, the distance between the reticle non-rotating means 153 and the non-locking means locking portion 161 of the locking means described later is the same as the fixed groove 142A. The entire length of the reticle non-rotating operation means 150 is set so as to be the same distance as the distance to the fixed groove 142B.

  The reticle non-rotating operation means 150 is formed with a notch 154 having a predetermined size on the peripheral side surface of the body from the end to the body so that the engaging means 65 can be inserted. An engagement piece storage port 157 having a predetermined size is formed in the reduced diameter portion 151 adjacent to the contact portion. In addition, the reticle non-rotating operation means 150 has an opening 158 having a predetermined size at a position different from the notch 154 on the peripheral side surface of the body.

  An engagement piece 155, for example, a sphere, a column, or the like is disposed in the engagement piece storage port 157 of the reticle rotation impermissible operation means 150. The engagement piece 155 is formed in the fixing grooves 142A and 142B of the eyepiece outer tube 140. The position of the reticle rotation impermissible operating means 150 is fixed by engaging. The engagement piece 155 is formed of a hard material such as plastic or metal, or an elastic member such as rubber.

  An urging means 156, for example, a leaf spring, is disposed in the opening 158 of the reticle non-rotating operation means 150. The urging means 156 urges the engagement piece 155 in the direction of the optical axis 2C, that is, in the direction of the eyepiece outer tube 140. As the urging means 156, a known urging means such as a coil spring or an elastic body such as rubber is selected in addition to the plate spring.

  The locking means 160 is formed in an annular shape, and a locking means 161 such as a plurality of teeth and protrusions is formed on one surface of the locking means 161 that locks with the reticle non-rotating means 153. Yes. The locking means 160 may be formed integrally with the eyepiece outer cylinder 140, for example, the eyepiece outer cylinder 140 having the impossible means locking portion 161 formed at the distal end portion of the collar 53. .

  The reticle turning operation means 110 is formed in an annular body having a predetermined inner diameter and having a narrower width than the reticle turning operation means 70 of the binoculars 1, and is attached to the reticle turning impossible operation means 150.

  The eyepiece optical unit 10C is configured as shown in FIGS. In other words, the first eyepiece inner cylinder 131 is housed on the inner back side of the eyepiece outer cylinder 140, that is, on the objective optical unit 12 side, with the reticle 20 mounted, and is connected to the outer peripheral surface of the first eyepiece inner cylinder 131. The inner peripheral surface of the outer cylinder 140 is in contact.

  In the state where the eyepiece optical system 11 is housed in the second eyepiece inner tube 132, the eyepiece optical system moving means 133 and the eyepiece outer tube 140 in the second eyepiece inner tube 132 are arranged on the front side in the eyepiece outer tube 140. The eyepiece optical system moving means 141 is housed by screwing.

  The eyepiece outer tube 140 is in a state where the eyepiece inner tube 130 is housed in one end portion of the lens barrel 2A, until the insertion portion 52 comes into contact with the end portion of the lens barrel 2A. It is inserted and attached to the lens barrel 2A. Accordingly, the eyepiece outer tube 140 is not rotatable about the optical axis 2C as a central axis and cannot be moved back and forth in the direction of the optical axis 2C.

  As shown in FIGS. 4 and 5, the rod-shaped body 66 passes through the eyepiece inner tube rotation restricting means 51 of the eyepiece outer tube 140, and the head of the rod-shaped member 66 contacts the outer peripheral surface of the eyepiece outer tube 140. It is press-fitted into the engagement means hole 42 formed on the outer peripheral surface of the first eyepiece inner tube 131 until it comes into contact or has a slight gap, and is attached to the first eyepiece inner tube 131.

  Thereby, the eyepiece outer tube 140 is fixed to the end of the lens barrel 2A, the first eyepiece inner tube 131 is engaged with the rod-like body 66, and is not fixed to other members. By moving in the inner cylinder rotation restricting means 51, the first eyepiece inner cylinder 131 is housed in the eyepiece outer cylinder 140 so as to be rotatable about the optical axis 2C as a central axis together with the rod-like body 66. ing. Further, the second ocular inner tube 132 is screwed into the ocular optical system moving unit 141 of the ocular outer tube 140 and is not fixed to other members. Therefore, the ocular optical system moving unit 141 and the ocular optical system moving unit are used. By adjusting the screwing with 133, the second ocular inner tube 132 is housed so as to be rotatable about the optical axis 2C as a central axis and capable of moving back and forth in the optical axis direction.

  As shown in FIGS. 4 and 5, the locking means 160 is disposed on the outer periphery of the eyepiece outer tube 140 so as to come into contact with the collar 53 of the eyepiece outer tube 140 and is attached to the lens barrel 2 </ b> A or the eyepiece outer tube 140. Has been.

  As shown in FIGS. 4 and 5, the reticle non-rotating operation means 150 is arranged on the outer periphery of the eyepiece outer tube 140 from the side of the collar 152 so that the head of the rod-like body 66 is accommodated in the notch 154. Is done. In this way, the reticle non-rotating operation means 150 and the head of the rod-like body 66 are engaged, the impossible locking means 161 and the reticle non-rotating means 153 face each other, and the outer periphery of the eyepiece outer tube 140 is The surface and the reduced diameter portion 151 abut.

  As shown in FIGS. 4 and 5, the spherical engagement piece 155 is disposed in the engagement piece storage port 157 of the reticle non-rotating operation means 150, and the leaf spring 156 connects the engagement piece 155 to the eyepiece outer tube. It arrange | positions at the opening part 158 so that it may urge to 140 side. The state shown in FIGS. 4 and 5 is a state in which the engagement piece 155 urged toward the eyepiece outer tube 140 by the leaf spring 156 is engaged with the fixing groove 142 </ b> A formed on the outer peripheral surface of the eyepiece outer tube 140. In this state, the impossible means locking portion 161 of the locking means 160 and the reticle non-rotating means 153 of the reticle non-rotating operation means 150 are opposed but not locked. The distance between the impossible means locking portion 161 and the reticle rotation impossible means 153 is set to the same distance as the distance between the fixed groove 142A and the fixed groove 142B.

  As shown in FIGS. 4 and 5, the reticle rotation operation means 110 is located on the outer peripheral surface of the reticle rotation disable operation means 150 and is mounted on the reticle rotation disable operation means 150. Thereby, the reticle turning operation means 110 is turnable about the optical axis 2C and can move back and forth in the direction of the optical axis 2C. Therefore, the reticle rotation impermissible operation means 150 is mounted between the reticle rotation operation means 110 and the eyepiece outer tube 140, and is integrated with the reticle rotation operation means 110 so as to be rotatable about the optical axis 2C. And, it is possible to move forward and backward in the direction of the optical axis 2C.

  The reticle angle adjustment / angle fixing and diopter adjustment mechanism 5 configured as described above is provided with a cylindrical rubber cover 14 so as to cover the outside. The cover 14 also has a function of protecting the user's eyes during use.

  The operation of the reticle angle adjustment / angle fixing and diopter adjustment mechanism 5 thus configured will be described. The binoculars 100 rotate the lens barrel 2A and / or the lens barrel 2B by a predetermined amount in accordance with the eye width of the user, and adjust the distance between the pair of lens barrels 2A and 2B as desired.

  In order to adjust the angle of the reticle 20, first, the reticle turning operation means 110 is moved backward in the direction of the optical axis 2C, and the reticle turning impossible operation means 150 that moves backward together with the reticle turning operation means 110 is the same. To reverse. Then, as shown in FIGS. 4 and 5, the engaging piece 155 and the fixing groove 142A are engaged, and in this state, the disabling means locking portion 161 and the reticle unrotating means 153 are engaged. Since it is not stopped, the reticle rotation operation means 110 is rotatable about 2C as the central axis.

  In this state, the reticle rotation operation means 110 is rotated about 2C as the central axis. When the reticle turning operation means 110 is turned, the reticle turning impossible operation means 150 to which the reticle turning operation means 110 is attached is also turned integrally in the same direction. When the reticle non-rotating operation means 150 rotates, the head is housed in the notch 154 of the reticle non-rotating operation means 150, and the rod-like body 66 engaged with the reticle non-rotating operation means 150 has an eyepiece outer cylinder. Within the range of the length in the circumferential direction of the eyepiece inner cylinder rotation restricting means 51 formed in 140, the inside of the eyepiece inner cylinder rotation restricting means 51 is integrated in the same direction with the reticle turning operation means 110. To turn. Here, since the eyepiece outer tube 140 is mounted on the lens barrel 2A so as not to rotate, the eyepiece inner tube rotation restricting unit 51 is rotated by the rotation of the reticle rotation operating unit 110 and the reticle rotation disabled operation unit 150. Does not rotate, and the range in which the rod-like body 66 rotates is always constant. When the rod-shaped body 66 rotates, the first eyepiece inner tube 131 fitted with the rod-shaped body 66 press-fitted into the engagement means hole 42 is also integrated with the rod-shaped body 66 and rotates in the same direction. To do. That is, the first eyepiece inner cylinder 131 is integrated with the reticle rotation operation unit 110, the reticle rotation impossibility operation unit 150, and the rod-like body 66 and rotates in the same direction. When the first eyepiece inner cylinder 131 is rotated, the reticle 20 attached to the first eyepiece inner cylinder 131 is rotated integrally with the first eyepiece inner cylinder 131 in the same direction. When the reticle 20 rotates and reaches a desired angle, the rotation of the reticle rotation operation means 110 is stopped. In this way, the angle of the reticle 20 can be adjusted as desired. Since the second eyepiece inner tube 132 is housed in the eyepiece outer tube 140 independently of the first eyepiece inner tube 131, the first eyepiece inner tube 131 is rotated by the rotation of the reticle rotation operation means 110. The second eyepiece inner tube 132 does not rotate and does not move even if the rotation or the like rotates.

  When the angle of the reticle 20 is adjusted as desired, the reticle turning operation means 110 is advanced in the direction of the optical axis 2C indicated by the arrow A in FIG. As shown in FIG. 6, when the reticle turning operation means 110 moves forward in this direction, the reticle turning impossible operation means 150 to which the reticle turning operation means 110 is attached moves forward in the same direction. As a result, the engagement state between the engagement piece 155 and the fixing groove 142A is released, and the engagement piece 155 moves forward in the same direction together with the reticle non-rotating operation means 150, and finally the engagement piece 155. Is engaged with the fixing groove 142B. Even if the reticle non-rotating operation means 150 advances in the same direction, the notch 154 allows the head of the rod-like body 66 to move relatively from the end of the reticle non-rotating operation means 150 to the trunk. The rod-like body 66 does not move because it has a predetermined size.

  The distance between the disabling means locking portion 161 and the reticle rotation disabling means 153 is set to the same distance as the distance between the fixing groove 142A and the fixing groove 142B, and as shown in FIG. In a state where 155 is engaged with the fixing groove 142B, the impossible means locking portion 161 and the reticle non-rotating means 153 are locked, and the reticle non-rotating means 153 is non-rotatable. The moving operation means 110 cannot be rotated. In this way, the angle of the reticle 20 adjusted as desired can be fixed.

  The binoculars 100 adjust the diopter before adjusting the angle of the reticle 20 as desired, after adjusting the angle of the reticle 20 as desired, or after fixing the angle of the reticle 20 adjusted as desired. Can be adjusted. The diopter is adjusted by adjusting the diopter of the eyepiece optical system 11 according to the visual acuity of the user. The diopter adjustment is performed by rotating the regulating rotation piece 134 in the second eyepiece inner tube 132 located in the cover 14 about the optical axis 2C as a central axis. The second ocular inner tube 132 is configured such that the eyepiece optical system moving means 133 and the eyepiece optical system moving means 141 are screwed together so that the second eyepiece inner cylinder 132 can rotate about the optical axis 2C as a central axis and can move back and forth in the optical axis direction. Therefore, when the regulating rotation piece 134 is rotated about the optical axis 2C as the central axis, the second eyepiece inner tube 132 is also rotated in the same direction, whereby the second eyepiece inner tube 132 is rotated. Moves back and forth in the direction of the optical axis. In this way, the diopter can be adjusted as desired.

  Thus, according to the binoculars 100, the angle of the reticle 20 can be adjusted as desired with a simple structure, the angle of the reticle 20 adjusted as desired can be fixed, and the diopter can be increased. It can be adjusted as desired. Therefore, even if the pair of lens barrels 2A and 2B is rotated as desired according to the eye width of the user and the distance between the lens barrels is adjusted, the reticle 20 can be rotated. Then, the reticle 20 is rotated, and the scale line 21 engraved on the reticle 20 can be adjusted to the target object as desired, and the diopter can be adjusted. The length and the distance to the target object can be accurately measured, and an excessive burden is not imposed on the user.

  Both the binoculars 1 and 100 are center focus type binoculars having a built-in center focus mechanism capable of simultaneously adjusting the focus of the lens barrels 2A and 2B, but the binoculars 1 and 100 are the focus of the lens barrels 2A and 2B. A payout mechanism that separately adjusts the eyepiece, for example, a payout-type binocular with a built-in eyepiece-only payout mechanism, for example, an eyepiece-only payout binocular.

FIG. 1 is a cross-sectional view of an essential part showing binoculars as an example of an optical apparatus with an eye width adjustment function according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part showing an eyepiece optical part of the binoculars shown in FIG. FIG. 3 is a view showing an eyepiece outer cylinder equipped in the binoculars shown in FIG. 1, FIG. 3 (a) is a side view of the eyepiece outer cylinder, and FIG. 3 (b) is a front view of the eyepiece outer cylinder. FIG. FIG. 4 is a cross-sectional view of an essential part showing binoculars which is another example of an optical apparatus with an eye width adjustment function according to an embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view showing a main part of the eyepiece optical unit of the binoculars shown in FIG. 4 in a state where the reticle angle can be adjusted. 6 is an enlarged cross-sectional view of a main part showing the eyepiece optical unit of the binoculars shown in FIG. 4 in a state where the reticle angle is fixed. FIG. 7 is a front view showing an example of a reticle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100 Binoculars 2A, 2B Lens barrel 2C, 2D Optical axis 3 Support body 4 Reticle angle adjustment mechanism 5 Reticle angle adjustment and angle fixing and diopter adjustment mechanisms 10A, 10B, 10C Eyepiece optical section 11 Eyepiece optical system 12 Objective optical section 13 Objective optical system 14 Cover 20 Reticle 21 Scale line 22 Reticle frame 23 Reticle presser 24 Reticle outer frame 25 Reticle frame presser 26 Reticle outer frame presser 27 Washer 40, 120 Reticle rotating means 41, 130 Eyepiece inner cylinder 42 For engaging means Hole 43 Restriction piece 44 Opening ball retainer 50, 140 Eyepiece outer cylinder 51 Eyepiece inner cylinder rotation restricting means 52 Insertion portion 53, 152 鍔 54 Holding cylinder 60 Cam hole 65 Engaging means 66 Rod-like body 70 Reticle rotation operation means 71 Engaging groove 72 Inner ring 73 Outer ring 74 Locking portion 110 Reticle turning operation means 131 First eyepiece inner cylinder 132 Second eyepiece inner cylinder 133 Eyepiece optical system moving means 134 Regulating rotation piece 135 Regulating piece 136 Reticle frame presser 141 Eyepiece optical system moving means 142A, 142B Fixing groove 150 Reticle non-rotating operation means 151 Reduced diameter portion 153 Reticle non-rotating means 154 Notch 155 Engagement piece 156 Energizing means 157 Engagement piece storage port 158 Opening part 160 Locking means 161 Impossible means locking part

Claims (5)

A pair of lens barrels each having an eyepiece optical unit equipped with an eyepiece optical system and an objective optical unit equipped with an objective optical system, and a support body supporting the pair of lens barrels, and at least the support body as a central axis It is an optical device with an eye width adjustment function in which one lens barrel is configured to be rotatable,
The eyepiece optical unit provided in at least one of the rotatable barrels is
With a reticle,
A reticle rotating means for storing the reticle and rotating the reticle around the optical axis of the eyepiece optical system;
Eye width comprising: a reticle rotation operating means which is provided so as to be rotatable about the optical axis and engages with the reticle rotation means to rotate the reticle rotation means. Optical equipment with adjustment function. The reticle rotating means includes
An eyepiece inner tube that houses the eyepiece optical system and is mounted with the reticle and rotatable about the optical axis;
An eyepiece inner cylinder rotation restricting means for restricting the rotation of the eyepiece inner cylinder to a predetermined rotation amount is housed inside, and the eyepiece inner cylinder is housed inside and cannot be rotated in the optical axis rotation direction. A tube,
The optical device with an eye width adjustment function according to claim 1, further comprising an engagement unit that is provided on the eyepiece inner tube and engages the eyepiece inner tube and the reticle rotation operation unit. The eyepiece inner tube is
A first ocular inner cylinder that accommodates the reticle and includes the engaging means; and a second ocular inner cylinder that accommodates the ocular optical system and has an ocular optical system moving means on an outer peripheral surface thereof. Prepared,
The eyepiece outer cylinder has eyepiece optical system moving means cooperating with the eyepiece optical system moving means on its inner peripheral surface, and houses the first eyepiece inner cylinder so as to be rotatable about the optical axis. 3. The eye width adjustment according to claim 2, wherein the second eyepiece inner tube is housed so as to be rotatable about the optical axis as a central axis and to be able to move forward and backward in the optical axis direction. Functional optical equipment. The eyepiece optical unit is
The reticle rotation operating means is mounted so as to be able to move forward and backward in the optical axis direction; and
The reticle rotation operation means and the eyepiece outer cylinder are mounted integrally with the reticle rotation operation means so as to be able to move back and forth in the optical axis direction, thereby making the rotation of the reticle rotation operation means impossible. Reticle non-rotating operation means having reticle non-rotating means;
2. A locking means provided with a predetermined interval from the reticle non-rotating means and having a non-locking means locking portion for locking with the reticle non-rotating means. 4. An optical apparatus with an eye width adjustment function according to any one of items 3 to 3. The optical apparatus with an eye width adjustment function according to any one of claims 1 to 4, wherein the optical apparatus with an eye width adjustment function is a center focus binocular or an eyepiece single-feed-out binocular.

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