CN110927953A - Telephoto-inverting optical system and optical device with same - Google Patents
Telephoto-inverting optical system and optical device with same Download PDFInfo
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- CN110927953A CN110927953A CN201911326129.0A CN201911326129A CN110927953A CN 110927953 A CN110927953 A CN 110927953A CN 201911326129 A CN201911326129 A CN 201911326129A CN 110927953 A CN110927953 A CN 110927953A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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Abstract
The invention provides a telephoto inverting optical system, which comprises an objective lens inverting group, an optical accessory and a first ocular lens group, wherein the objective lens inverting group, the optical accessory and the first ocular lens group are sequentially arranged from an object side to an image side along an optical axis, the objective lens inverting group has positive refractive power and an inverting function, the first ocular lens group has positive refractive power, a primary image surface of the telephoto inverting optical system is arranged between the objective lens inverting group and the ocular lens group, the optical accessory is positioned on the primary image surface, and the optical accessory can be independently adjusted. On one hand, the optical system shortens the total length of the optical system through the objective lens inverting group, so that the length of an optical device with the optical system can be shortened, and the weight of the optical device can be reduced; on the other hand, the optical accessory is positioned on the primary image surface and can be independently adjusted, so that in the adjustment process of the optical system, only the optical accessory needs to be adjusted, the relative position of each lens in the system is not changed, the optical accessory and the primary image surface are ensured to be coincident, and the imaging quality and the aiming precision are ensured to meet the observation or aiming requirements.
Description
Technical Field
The invention relates to the technical field of aiming devices, in particular to a telephoto-inverting optical system and an optical device with the same.
Background
The telephoto-inverting optical system is also called as a telescope system, has the characteristics of simple structure and good imaging quality, is widely applied to optical devices (such as a multiplying power mirror, an aiming tool and the like) of a handheld light weapon, and is widely applied to a division-line-free swing parallax prism sighting optical system disclosed in the Chinese utility model patent with the patent number ZL201420098594.X, as shown in fig. 1, the conventional telephoto-inverting optical system comprises an objective lens 100, an objective lens additional mirror 200, a prism group 300 and an objective lens group 400 which are sequentially arranged from the object side, wherein the prism group 300 consists of a roof prism 301 and a half pentaprism 302. However, in practical applications, the total optical length of the prism sighting optical system is still long, which results in a heavy optical device with the prism sighting optical system, and is not beneficial to the application of the hand-held light weapon, and it is understood that the total optical length refers to the distance from the vertex of the first object side surface to the vertex of the last image side surface of the optical system, and the dimension H1 shown in fig. 1 is the total optical length of the prism sighting optical system. In addition, since the division plane 303 and the primary image plane of the prism gun aiming optical system are both provided on one reflection surface of the half-pentaprism 302, in the configuration in which the prism group 300 needs to be adjusted when performing optical adjustment (the division center is made to coincide with the impact point), the division plane 303 and the primary image plane are separated from each other, and parallax is generated, which affects the aiming accuracy of the optical system. Accordingly, there is a need for improvements to existing prism gun aiming optical systems.
Disclosure of Invention
The present invention is directed to a telephoto-inverting optical system, which has a shorter total optical length than a conventional optical system, can reduce the weight of an optical device by shortening the length of the optical device when the optical device satisfies the observation or aiming requirements, does not generate parallax when optically adjusting, and can ensure that the imaging quality and the aiming accuracy of the optical system meet the observation or aiming requirements.
Accordingly, another object of the present invention is to provide an optical device having the above telephoto-inverted optical system, which has a shorter length than the conventional optical device, and which can ensure that no parallax is generated during optical adjustment, thereby satisfying the requirements of observation or aiming with respect to the imaging quality and aiming accuracy.
For a telephoto-inverted optical system, the invention adopts the technical scheme that: a telephoto inverting optical system comprises an objective lens inverting group, an optical accessory and a first eyepiece group which are sequentially arranged from an object side to an image side along an optical axis, wherein the objective lens inverting group has positive refractive power and an inverting function, the first eyepiece group has positive refractive power, a primary image plane of the telephoto inverting optical system is arranged between the objective lens inverting group and the eyepiece group, the optical accessory is located on the primary image plane, and the optical accessory can be independently adjusted.
On the other hand, the telephoto-inverting optical system can reduce the total length of the optical system by an objective lens inverting group (for example, a preferable configuration of the objective lens inverting group described below), and further can reduce the length of an optical device having the optical system, thereby reducing the weight of the optical device; on the other hand, the optical accessory of the telephoto-inverting optical system is positioned on the primary image plane and can be independently adjusted, so that in the adjustment process of the optical system, only the optical accessory needs to be adjusted without changing the relative position of each lens in the system, thereby ensuring that the optical accessory and the primary image plane are kept coincident, and further ensuring that the imaging quality and the aiming precision meet the observation or aiming requirements.
Preferably, the optical accessory is selected from a field diaphragm or a flat reticle.
Preferably, the objective lens inverting group includes an objective lens double-cemented mirror, a first prism group and an objective lens single piece, which are sequentially arranged from an object side to an image side along an optical axis, the objective lens double-cemented mirror has positive refractive power, the objective lens single piece has negative refractive power, the first prism group includes a first roof prism and a first half-pentaprism, and the first roof prism and the first half-pentaprism form a Pechan roof prism group, so that the optical axis emitted from the objective lens double-cemented mirror sequentially passes through the first roof prism and the first half-pentaprism and then coincides with a central axis of the objective lens single piece.
Furthermore, the first prism group further comprises an aperture diaphragm, the aperture diaphragm is arranged between the first roof prism and the first half-pentaprism, and the center of a light through hole of the aperture diaphragm is coincided with an optical axis passing through the first roof prism and the first half-pentaprism.
In another embodiment, the objective lens inverting group includes an objective lens double-cemented lens, a first prism group and an objective lens single sheet, which are sequentially arranged from an object side to an image side along an optical axis, the objective lens double-cemented lens has positive refractive power, the objective lens single sheet has negative refractive power, the first prism group includes a first roof prism and a first half-pentaprism, and the first roof prism and the first half-pentaprism form a Pechant prism group, so that the optical axis emerging from the objective lens double-cemented lens sequentially passes through the first half-pentaprism and the first roof prism and then coincides with a central axis of the objective lens single sheet.
Furthermore, the first prism group further comprises an aperture diaphragm, the aperture diaphragm is arranged between the first roof prism and the first half-pentaprism, and the center of a light through hole of the aperture diaphragm is coincided with an optical axis passing through the first half-pentaprism and the first roof prism.
In another embodiment, the objective lens inverting assembly includes an objective lens doublet, a first prism group and an objective lens single sheet, the objective lens doublet has positive refractive power, the objective lens single sheet has negative refractive power, the first prism group includes a first roof prism and a first half-pentaprism, the first roof prism and the first half-pentaprism form a Pechant prism group, the first prism group is located on the image side of the objective lens doublet, and the objective lens single sheet is located between the first roof prism and the first half-pentaprism, so that an optical axis emerging from the objective lens doublet is parallel to the optical axis after sequentially passing through the first roof prism, the objective lens single sheet and the first half-pentaprism.
In another embodiment, the objective lens inverting assembly includes an objective lens doublet, a first prism group and an objective lens single sheet, the objective lens doublet has positive refractive power, the objective lens single sheet has negative refractive power, the first prism group includes a first roof prism and a first half-pentaprism, the first roof prism and the first half-pentaprism form a Pechant prism group, the first prism group is located on the image side of the objective lens doublet, and the objective lens single sheet is located between the first roof prism and the first half-pentaprism, so that an optical axis emerging from the objective lens doublet is parallel to the optical axis after sequentially passing through the first half-pentaprism, the objective lens single sheet and the first roof prism.
For an optical device, the technical scheme adopted by the invention is as follows: an optical device comprises a lens body, an accessory seat and the telephoto-inverting optical system, wherein the objective lens inverting group and the first eyepiece lens group of the telephoto-inverting optical system are fixedly arranged in the lens body, and the optical accessory is independently arranged in the lens body through the accessory seat in an adjustable manner.
Compared with the prior art, the optical device has the telephoto reverse image optical system, so that the total length of the optical system is shorter, the length of the optical device can be shortened, and the weight of the optical device can be reduced; on the other hand, the optical accessory can be independently adjusted and installed in the lens body through the accessory seat, so that in the adjusting process of the optical system, only the accessory seat needs to be adjusted, the relative position of each lens in the system is not changed, the optical accessory is enabled to be coincident with the primary image surface, and the imaging quality and the aiming precision are guaranteed to meet the observation or aiming requirements.
Furthermore, the mirror body is provided with two adjusting screws with mutually vertical center lines, and the tail ends of the two adjusting screws are abutted against the outer surface of the accessory seat so as to adjust the accessory seat.
Furthermore, the outer surface of the accessory seat is provided with a limiting part for preventing the adjusting screw from being separated from the accessory seat, and the limiting part is in contact connection with the tail end of the adjusting screw.
Preferably, the limiting part is a groove, and the tail end of the adjusting screw abuts against the inner wall of the groove.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.
FIG. 1 is a schematic diagram of a prior art prism gun aiming optical system;
FIG. 2 is a schematic structural diagram of a telephoto-inverting optical system having a first objective inverting group according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a telephoto-inverting optical system having a second objective inverting group according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a telephoto-inverting optical system having a third objective inverting group according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a telephoto-inverting optical system having a fourth objective inverting group according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a telephoto-inverted image optical system according to another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an optical device according to an embodiment of the present invention (the optical accessory is a field stop);
FIG. 8 is a schematic structural diagram of an optical device according to an embodiment of the present invention (the optical accessory is a reticle);
FIG. 9 is a schematic view of the structure of an optical device according to another embodiment of the present invention (the optical attachment is a field stop);
FIG. 10 is a schematic structural diagram of an optical device according to another embodiment of the present invention (the optical attachment is a reticle);
FIG. 11 is a schematic structural diagram of an optical device according to yet another embodiment of the present invention (the optical attachment is a field stop);
FIG. 12 is a schematic structural diagram of an optical device according to yet another embodiment of the present invention (the optical attachment is a reticle);
FIG. 13 is a schematic view of the assembly of the attachment base and the set screw according to an embodiment of the present invention;
FIG. 14 is a sectional view A-A of FIG. 13;
FIG. 15 is an exploded view of the attachment base and set screw assembly of one embodiment of the present invention;
fig. 16 is a schematic view of the assembly of the attachment seat and the adjusting screw according to another embodiment of the present invention.
Detailed Description
It should be noted that the terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like used in the present invention are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships may also be changed accordingly.
Referring to fig. 1, as described in the background section, the conventional telephoto-inverting system includes an objective lens 100, an objective lens additional mirror 200, a prism group 300, and an eyepiece group 400, which are arranged in order from an object side, wherein the prism group 300 is composed of a roof prism 301 and a half-pentaprism 302. The optical total length of the prism sighting optical system is long, so that an optical device with the prism sighting optical system is heavy and is not beneficial to the application of a handheld light weapon, and it can be understood that the optical total length refers to the distance from the vertex of the first object side surface to the vertex of the last image side surface of the optical system, and the dimension H1 shown in figure 1 is the optical total length of the prism sighting optical system. In addition, when the prism gun aiming optical system performs optical adjustment (makes the division center and the impact point coincide), parallax is easy to occur, and further, the imaging quality and the aiming precision of the optical system are affected. Accordingly, there is a need for improvements to existing prism gun aiming optical systems.
In order to better describe the technical solution of the present invention, embodiments of the telephoto-inverted image optical system and the optical apparatus will be described with reference to fig. 2 to 12. In fig. 2 to 12, the left side of the drawings corresponds to the object side, and the right side of the drawings corresponds to the image side.
As shown in fig. 2, an embodiment of the present invention provides a telephoto-inverting optical system, which includes an objective inverting group 1, an optical accessory 4, and a first objective group 5 sequentially disposed from an object side to an image side along an optical axis, wherein the objective inverting group 1 has positive refractive power and inverting function, the first objective group 5 has positive refractive power, a primary image plane S1 of the telephoto-inverting optical system is disposed between the objective inverting group 1 and the first objective group 5, the optical accessory 4 is located on the primary image plane S1, and the optical accessory 4 is independently adjustable, so that the positions of the objective inverting group 1 and the first objective group 5 can be kept unchanged, only the position of the optical accessory 4 is changed, and the optical accessory 4 is always located on the primary image plane S1 regardless of the variation of the optical accessory 4. The optical accessory 4 may be a field diaphragm or a flat reticle. When the optical attachment 4 is a field stop, any plane of the field stop is located on the primary image plane S1 of the optical system; when the optical attachment 4 is a flat reticle, the scribe line on the flat reticle is located at the primary image plane S1 of the optical system.
The objective lens inverting group 1 may have the following structure:
as shown in fig. 2, the first objective inverting group 1 has the following structure: the objective lens double-cemented mirror 2, the first prism group 3 and the objective lens single sheet 13 are sequentially arranged from the object side to the image side along the optical axis, the objective lens double-cemented mirror 2 has positive refractive power, the objective lens single sheet 13 has negative refractive power, the first prism group 3 is used as a component playing a role of inverting in the objective lens inverting group 1 and comprises a first roof prism 31 and a first half-pentaprism 32, and the first roof prism 31 and the first half-pentaprism 32 form a Pechant roof prism group, so that the optical axis emitted from the objective lens double-cemented mirror 2 sequentially passes through the first roof prism 31 and the first half-pentaprism 32 and then coincides with the central axis of the objective lens single sheet 13.
As shown in fig. 3, the structure of the second objective inverting group 1: the objective lens double-cemented mirror 2, the first prism group 3 and the objective lens single sheet 13 are sequentially arranged from the object side to the image side along the optical axis, the objective lens double-cemented mirror 2 has positive refractive power, the objective lens single sheet 13 has negative refractive power, the first prism group 3 is used as a component playing a role of inverting in the objective lens inverting group 1 and comprises a first roof prism 31 and a first half-pentaprism 32, and the first roof prism 31 and the first half-pentaprism 32 form a Pechant roof prism group, so that the optical axis emitted from the objective lens double-cemented mirror 2 sequentially passes through the first half-pentaprism 32 and the first roof prism 31 and then coincides with the central axis of the objective lens single sheet 13. Compared with the structure of the first objective lens inverting assembly 1, the structure can increase the light passing aperture of the first prism assembly 3 without increasing the weight of the first prism assembly 3, and prevent light from being cut, namely prevent the field of view from being cut.
As shown in fig. 4, the third objective inverting group 1 has the structure: the objective lens double-cemented mirror 2 has positive refractive power, the objective lens single-chip 13 has negative refractive power, the first prism group 3 is used as a component playing a role in inverting in the objective lens inverting group 1 and comprises a first roof prism 31 and a first half-pentaprism 32, the first roof prism 31 and the first half-pentaprism 32 form a Pechan roof prism group, the first prism group 3 is positioned on the image side of the objective lens double-cemented mirror 2, and the objective lens single-chip 13 is positioned between the first roof prism 31 and the first half-pentaprism 32, so that an optical axis emitted from the objective lens double-cemented mirror 2 sequentially passes through the first roof prism 31, the objective lens single-chip 13 and the first half-pentaprism 32 and then is emitted in parallel to the optical axis.
As shown in fig. 5, the fourth objective inverting group 1 has a structure: the objective lens double-cemented mirror 2 has positive refractive power, the objective lens single-chip 13 has negative refractive power, the first prism group 3 is used as a component playing a role in inverting in the objective lens inverting group 1 and comprises a first roof prism 31 and a first half-pentaprism 32, the first roof prism 31 and the first half-pentaprism 32 form a Pechan roof prism group, the first prism group 3 is positioned on the image side of the objective lens double-cemented mirror 2, and the objective lens single-chip 13 is positioned between the first roof prism 31 and the first half-pentaprism 32, so that an optical axis emitted from the objective lens double-cemented mirror 2 sequentially passes through the first half-pentaprism 32, the objective lens single-chip 13 and the first roof prism 31 and then is emitted in parallel to the optical axis. Compared with the structure of the third objective lens inverting assembly 1, the structure can make the clear aperture of the first prism assembly 3 larger without increasing the weight of the first prism assembly 3, and prevent the light from being cut, i.e. prevent the view field from being cut.
As shown in fig. 2 and 3, for the optical system having the first objective lens inverting group 1 and the second objective lens inverting group 1, in order to increase the exit pupil distance of the optical system, in some embodiments, the first prism group 1 further includes an aperture stop 33, the aperture stop 33 is disposed between the first roof prism 31 and the first half-pentaprism 32, and the center of the light-passing hole of the aperture stop 33 coincides with the optical axis passing through between the first half-pentaprism 32 and the first roof prism 31.
In the structure of the objective lens inverting group 1, the objective lens doublet 2 is formed by gluing a first biconvex lens 11 and a negative meniscus lens 12; the objective lens single sheet 13 is a negative lens; the first eyepiece group 5 includes an eyepiece double cemented lens and an eyepiece single piece arranged in order from the object side to the image side, the eyepiece double cemented lens is cemented by a biconcave lens 55 and a second biconvex lens 52, the eyepiece single piece is a third biconvex lens 53, and the entire first eyepiece group 5 has positive refractive power.
In another embodiment, as shown in fig. 6, the first prism group 3 in the first and second objective lens inverting group 1 structures can be replaced by a second prism group 8, the second prism group 8 includes an isosceles roof prism 81 and two second half-pentaprisms 82, the two second half-pentaprisms 82 are respectively glued and connected to two transmission surfaces of the isosceles roof prism 81, so that the second prism group 8 is in a concave shape, and the optical axis emitted from the objective lens double-glued mirror 2 sequentially passes through the first second half-pentaprism 82, the isosceles roof prism 81 and the second half-pentaprism 82 and then is superposed on the central axis of the objective lens single 13. The second prism group 8 with the structure also has the function of folding the light path, and can replace the Pechan ridge prism group.
In any configuration of the members serving as the inverting members in the objective lens inverting unit 1, the optical axis incident on the members and the optical axis exiting from the members may or may not be collinear, and the imaging quality of the optical system is not affected as long as the optical axis incident on the members is coincident with the central axis of the objective lens doubler 2 and the optical axis exiting from the members is coincident with the central axis of the objective lens sheet 13. Preferably, the optical axis of light entering the first prism set 3 or the second prism set 8 is collinear with the optical axis of light exiting the first prism set 3 or the second prism set 8.
Therefore, compared with the prior art, on one hand, the telephoto inverting optical system shortens the total length of the optical system (as shown in the size H2 in FIG. 2) by using the objective lens inverting group 1 (for example, the first prism group 3 is in the form of a Pechan prism group and is arranged between the objective lens double cemented mirror 2 and the objective lens single sheet 13; or the Pechan prism group is arranged on the image side of the objective lens double cemented mirror 2; and then the objective lens single sheet 13 is arranged between two prisms of the Pechan prism group, and so on, so that the optical path of the objective lens group is folded to shorten the optical path between the image side of the objective lens single sheet 13 and the primary image surface S1), thereby shortening the length of the optical device with the optical system and reducing the weight of the optical device; on the other hand, the optical accessory 4 of the telephoto-inverting optical system is located on the primary image surface S1 and can be independently adjusted, so that in the adjustment process of the optical system, only the optical accessory 4 needs to be adjusted without changing the relative position of each lens in the system, thereby ensuring that the optical accessory and the primary image surface are kept coincident, and further ensuring that the imaging quality and the aiming precision meet the observation or aiming requirements.
As shown in fig. 7 to 12, an embodiment of the present invention further provides an optical apparatus, which includes a lens body 6, an attachment seat 7, and the telephoto-inverting optical system as described above, wherein the objective lens inverting group 1 and the first eyepiece group 5 of the telephoto-inverting optical system are both fixedly installed in the lens body 6, and the optical attachment 4 is independently adjustable and installed in the lens body 6 through the attachment seat 7. It will be appreciated that when the optical attachment 4 is a field stop, the optical device is a magnification mirror; when the optical accessory 4 is a flat reticle, the optical device is an aiming sight.
As shown in fig. 13 to 15, the adjustment of the accessory holder 7 is achieved by: the lens body 6 is provided with two adjusting screws 61 with mutually vertical center lines, the tail ends of the two adjusting screws 61 are abutted against the outer surface of the accessory seat 7, external forces in different directions are applied to the accessory seat 7 through the two adjusting screws 61, the accessory seat 7 can be displaced along the direction of the action of the external force, and therefore the relative position of the accessory seat 7 relative to the objective lens single sheet 13 or the first eyepiece group 5 is adjusted. The adjusting screw 61 may be an adjusting mechanism for a miniature sighting telescope as disclosed in utility model patent No. ZL201721889442.1, or an adjusting handwheel mechanism as disclosed in utility model patent No. ZL 201020513676.8. No matter which structure of the adjusting screw 61 is adopted, the hand wheel seat is arranged on the lens body 6 during installation, and the adjusting screw head abuts against the outer surface of the accessory seat 7, so that external force can be applied to the accessory seat 7 by rotating the adjusting screw 61 to change the relative position of the accessory seat 7 relative to the objective lens single sheet 13 or the first ocular group 5.
Therefore, compared with the prior art, the optical device has the telephoto-inverted optical system, so that the total length of the optical system is shorter, the length of the optical device can be shortened, and the weight of the optical device can be reduced; on the other hand, the optical accessory 4 is independently arranged in the lens body 6 in an adjustable manner through the accessory seat 7, so that in the adjusting process of the optical system, only the accessory seat 7 needs to be adjusted without changing the relative position of each lens in the system, the optical accessory is ensured to be coincident with a primary image plane, and the imaging quality and the aiming precision are ensured to meet the observation or aiming requirements.
As shown in fig. 14, in order to prevent the adjusting screw 61 from being separated from the accessory seat 7 during the adjustment of the accessory seat 7, in the present embodiment, a limiting portion 71 is provided on an outer surface of the adjusting accessory seat 7, and the limiting portion 71 is in contact connection with a tip of the adjusting screw 61. Specifically, the limiting portion 71 is a groove structure with an outward opening, and the end of the adjusting screw 61 abuts against the inner wall of the groove, so that the displacement of the accessory seat 7 along the length direction of the mirror body 6 can be prevented, and the optical accessory 4 mounted in the accessory seat 7 can be always located on the primary image surface S1.
In another embodiment, as shown in fig. 16, the position-limiting portion 71 is a convex portion protruding outward, the end of the adjusting screw 61 is provided with a concave portion matching with the convex portion, and the inner surface of the concave portion abuts against the outer surface of the convex portion, so as to prevent the attachment base 7 from being displaced along the length direction of the mirror body 6, and ensure that the optical attachment 4 mounted in the attachment base 7 is always located on the primary image surface S1.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by any similar or identical means.
Claims (10)
1. A telephoto-inverting optical system, comprising: the optical image inverting device comprises an objective lens inverting group (1), an optical accessory (4) and a first eyepiece group (5), wherein the objective lens inverting group (1) is sequentially arranged from an object side to an image side along an optical axis, the objective lens inverting group (1) has positive refractive power and an inverting function, the first eyepiece group (5) has positive refractive power, a primary image plane of the telephoto inverting optical system is arranged between the objective lens inverting group (1) and the first eyepiece group (5), the optical accessory (4) is located on the primary image plane, and the optical accessory (4) can be independently adjusted.
2. The telephoto-inverting optical system according to claim 1, wherein: one of the optical accessories (4) is a field diaphragm or a flat reticle.
3. The telephoto-inverting optical system according to claim 1, wherein: the objective lens inverting group (1) comprises an objective lens double-cemented lens (2), a first prism group (3) and an objective lens single sheet (13), wherein the objective lens double-cemented lens (2), the first prism group (3) and the objective lens single sheet (13) are sequentially arranged from an object side to an image side along an optical axis, the objective lens double-cemented lens (2) has positive refractive power, the objective lens single sheet (13) has negative refractive power, the first prism group (3) comprises a first roof prism (31) and a first half-pentaprism (32), and the first roof prism (31) and the first half-pentaprism (32) form a Pechan roof prism group, so that the optical axis emitted from the objective lens double-cemented lens (2) sequentially passes through the first roof prism (31) and the first half-pentaprism (32) and then coincides with the central axis of the objective lens single sheet (13).
4. The telephoto-inverting optical system according to claim 1, wherein: the objective lens inverting group (1) comprises an objective lens double-cemented lens (2), a first prism group (3) and an objective lens single sheet (13), wherein the objective lens double-cemented lens (2), the first prism group (3) and the objective lens single sheet (13) are sequentially arranged from an object side to an image side along an optical axis, the objective lens double-cemented lens (2) has positive refractive power, the objective lens single sheet (13) has negative refractive power, the first prism group (3) comprises a first roof prism (31) and a first half-pentaprism (32), and the first roof prism (31) and the first half-pentaprism (32) form a Pechan roof prism group, so that the optical axis emitted from the objective lens double-cemented lens (2) sequentially passes through the first half-pentaprism (32) and the first roof prism (31) and then coincides with the central axis of the objective lens single sheet (13).
5. The telephoto-inverted image optical system according to any one of claims 3 and 4, wherein: the first prism group (3) further comprises an aperture diaphragm (33), the aperture diaphragm (33) is arranged between the first roof prism (31) and the first half-pentaprism (32), and the center of a light through hole of the aperture diaphragm (33) is coincided with an optical axis passing through the first roof prism (31) and the first half-pentaprism (32).
6. The telephoto-inverting optical system according to claim 1, wherein: the objective lens inverting group (1) comprises an objective lens double-cemented lens (2), a first prism group (3) and an objective lens single chip (13), the objective lens double-cemented lens (2) has positive refractive power, the objective lens single sheet (13) has negative refractive power, the first prism group (3) comprises a first roof prism (31) and a first half-pentaprism (32), the first roof prism (31) and the first half pentaprism (32) form a Pechan roof prism group, the first prism group (3) is positioned on the image side of the objective double-cemented lens (2), the objective lens single sheet (13) is positioned between the first roof prism (31) and the first half-pentaprism (32), the optical axis emitted from the objective lens double-cemented lens (2) passes through the first roof prism (31), the objective lens single sheet (13) and the first half-pentaprism (32) in sequence and then is emitted in parallel to the optical axis.
7. The telephoto-inverting optical system according to claim 1, wherein: the objective lens inverting group (1) comprises an objective lens double-cemented lens (2), a first prism group (3) and an objective lens single chip (13), the objective lens double-cemented lens (2) has positive refractive power, the objective lens single sheet (13) has negative refractive power, the first prism group (3) comprises a first roof prism (31) and a first half-pentaprism (32), the first roof prism (31) and the first half pentaprism (32) form a Pechan roof prism group, the first prism group (3) is positioned on the image side of the objective double-cemented lens (2), the objective lens single sheet (13) is positioned between the first roof prism (31) and the first half-pentaprism (32), the optical axis emitted from the objective lens double-cemented lens (2) passes through the first half pentaprism (32), the objective lens single sheet (13) and the first roof prism (31) in sequence and then is emitted in parallel to the optical axis.
8. An optical device, characterized by: the telephoto and image-reversing optical system comprises a lens body (6), an accessory seat (7) and the telephoto and image-reversing optical system according to any one of claims 1 to 7, wherein the objective lens image-reversing group (1) and the first eyepiece group (5) of the telephoto and image-reversing optical system are both fixedly installed in the lens body (6), and the optical accessory (4) is independently adjustable and installed in the lens body (6) through the accessory seat (7).
9. An optical device according to claim 8, wherein: the lens body (6) is provided with two adjusting screws (61) with mutually perpendicular center lines, and the tail ends of the two adjusting screws (61) are abutted against the outer surface of the accessory seat (7) so as to adjust the accessory seat (7).
10. An optical device according to claim 9, wherein: the outer surface of the accessory seat (7) is provided with a limiting part (71) for preventing the adjusting screw (61) from being separated from the accessory seat (7), and the limiting part (71) is in contact connection with the tail end of the adjusting screw (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326129.0A CN110927953A (en) | 2019-12-20 | 2019-12-20 | Telephoto-inverting optical system and optical device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326129.0A CN110927953A (en) | 2019-12-20 | 2019-12-20 | Telephoto-inverting optical system and optical device with same |
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| Publication Number | Publication Date |
|---|---|
| CN110927953A true CN110927953A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911326129.0A Pending CN110927953A (en) | 2019-12-20 | 2019-12-20 | Telephoto-inverting optical system and optical device with same |
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| CN (1) | CN110927953A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640774A (en) * | 2021-08-12 | 2021-11-12 | 吉林省巨程智造光电技术有限公司 | Non-debugging optical system based on common aperture of aiming and receiving and use method |
-
2019
- 2019-12-20 CN CN201911326129.0A patent/CN110927953A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640774A (en) * | 2021-08-12 | 2021-11-12 | 吉林省巨程智造光电技术有限公司 | Non-debugging optical system based on common aperture of aiming and receiving and use method |
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