CN210670307U - Camera lens capable of being used for shooting - Google Patents

Abstract

The utility model discloses a camera lens for shooting, which comprises a camera lens for shooting, a front cover, a shell, a focusing ring, an internal thread ring, an external thread ring, a support frame, a diaphragm ring, a rear lens group, a diaphragm deflector rod, a diaphragm connecting rod, a rear lens group, a diaphragm turntable, a diaphragm blade base, a scale ring, a middle lens group, a front lens group and a front lens group support frame, the utility model eliminates the mechanical respiration of the traditional camera lens when used for shooting, the lens is more convenient to replace, the operation habit of a photographer is better met, the photographing process of the photographer is more convenient and faster, and the utility model discloses compare in complicated camera lens adopt focus ring, internal thread ring, focus the second grade shifting block, focus the second grade and dial ring, external thread ring, focus the second grade and dial ring adjusting ring, stand and preceding mirror group stand constitution's second grade mirror group actuating mechanism and make camera lens cost greatly reduced.

Description

Camera lens capable of being used for shooting

Technical Field

The present invention relates to a camera lens, and more particularly to a camera lens for photographing.

Background

The camera lens is the most important component in the camera because its quality directly affects the quality of the captured image. The lens mainly comprises zooming and fixed focus, and a doubling mirror. The zoom lens is a lens that can be pushed or pulled. In addition, there is a fixed focus lens, which is that the focal length cannot be changed to only one focal length, or only one viewing angle.

The fixed focus lens is a lens with a fixed focal length, and has no focal section or only one visual field. The fixed focus lens has no zooming function.

Because the traditional camera lens can generate mechanical respiration in the focusing process, the mechanical respiration is that the lens can stretch along with the rotation of the focusing ring when the focusing ring is rotated to adjust the focal length, the axial length of the lens changes, the mechanical stretching is the mechanical respiration, a light blocking and absorbing light shielding hopper is required to be installed at the end part of the lens in the shooting process, the lens halo is reduced by controlling the light entering the lens, the angular position of the light shielding hopper is generally fixed according to the shooting requirement, if the lens needs to be focused again in the shooting process and the camera lens has the mechanical respiration, the light shielding hopper needs to be manually disassembled and the light shielding hopper needs to be readjusted to the original position at this time, so that the operation of a photographer is complicated, and the photographing requirement of the photographer can not be well adapted.

When a camera lens is used for shooting, a photographer often uses a focus follower to assist in shooting to control the depth of field, but the traditional camera lens is used for focusing and adjusting an aperture, the axial positions of a focusing ring and an aperture ring on the camera lens can be changed, when the photographer needs to replace the lens according to shooting requirements, a gear of the focus follower cannot be meshed with a newly replaced lens after the lens is replaced and the camera lens is replaced last time, so that the photographer needs to readjust the position of the focus follower to be matched with the newly replaced lens, and the operation of the photographer for replacing the lens is complicated and troublesome.

The secondary lens group driving mechanism is used for realizing accurate focusing and keeping definition in some camera lenses, but the existing camera lenses are realized by adopting a mode of arranging a complex curve groove and matching related parts, and the realization mode needs to adopt an expensive high-precision machine tool to process the curve groove in production, so that the cost is very high, the processing difficulty is huge, and further the integral cost of the camera lenses is greatly improved.

As described above, the conventional camera lens cannot be adapted to the requirements of the photographer when used for photographing, and the cost is greatly increased if the camera lens having a complicated structure is directly used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera lens that can be used to make a video recording to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a camera lens for shooting comprises a front cover, a shell, a focusing ring, an internal thread ring, an external thread ring, a support frame, a diaphragm ring, a rear lens group, a diaphragm deflector rod, a diaphragm connecting rod, a rear lens group, a diaphragm turntable, a diaphragm blade base, a scale ring, a middle lens group, a front lens group and a front lens group support frame, wherein the front cover is arranged at the top end of the shell, a small cone is arranged at the bottom end of the shell, the external thread ring, the internal thread ring and the focusing ring are sequentially arranged outside the shell from inside to outside, the focusing ring is fixedly connected with the internal thread ring, the internal thread ring is rotatably connected with the outer wall of the shell, the external thread ring is connected with the internal thread ring through a first thread, the support frame is slidably connected with the inner wall of the shell, the support frame is fixedly connected with the external thread ring, a first rotation preventing structure is arranged on the support frame, a front lens group supporting frame is arranged in the focusing secondary shifting ring, a front lens group is arranged in the front lens group supporting frame, the front lens group is clamped in the front lens group supporting frame through a front lens group locking ring, a rear lens group is fixedly arranged at the bottom of the supporting frame, an intermediate lens group is arranged between the rear lens group and the front lens group, the central axes of the front lens group, the intermediate lens group and the rear lens group are collinear, the intermediate lens group is fixedly connected with the supporting frame, a focusing secondary shifting ring adjusting ring is fixedly arranged at the top of the front lens group supporting frame, the focusing second-stage shifting ring adjusting ring is connected with the focusing second-stage shifting ring through a second thread, the transmission ratio of the second thread to the first thread is different, a focusing second-stage shifting block is fixedly arranged at the top of the internal thread ring, the side surface of the focusing secondary shifting ring is communicated with a clamping groove, the tail end of the focusing secondary shifting block extends into the clamping groove and is connected with the clamping groove in a sliding way, a second anti-rotation structure is arranged among the middle lens group, the front lens group and the front lens group support frame;

the utility model discloses a lens ring, including the casing, the casing is provided with the aperture ring, the aperture ring is provided with the aperture ring and is connected with the support frame, the casing outside still installs aperture ring and scale ring, and the scale ring sets up between aperture ring and focusing ring, is provided with the adjusting collar between scale ring and the internal thread ring, scale ring and adjusting collar fixed connection, and the aperture ring rotates with the casing to be connected, and aperture driving lever sliding connection has the light ring to connect the pole, back mirror group is including supporting frame and back mirror core, the back mirror core is installed in supporting frame inner chamber bottom, inside light ring carousel and the light ring blade base of being provided with of supporting frame, the light ring carousel rotate with the supporting frame to be connected and with light ring and connect pole fixed connection, light ring carousel top is provided with light ring.

First anti-rotating structure includes that a plurality of supporters prevent that the hole and with the supporter prevent that the first of hole matching prevents changeing the pin, the hole all sets up at the supporter outer wall is prevented changeing by the supporter, and first anti-rotating pin is installed and is prevented changeing downtheholely at the supporter, still lead to on the casing lateral wall with first prevent changeing the structure matching first prevent changeing the matching hole.

The second prevents that the structure of changeing includes that the second prevents changeing the matching hole, prevents changeing the screw, prevents changeing the spout and a plurality of and prevent changeing the second of screw matching and prevent changeing the pin, the stand lateral wall leads to has a plurality of seconds to prevent changeing the matching hole, and the preceding group side leads to has a plurality of spouts of preventing changeing, and the side of the middle group of mirror leads to has a plurality of screws of preventing changeing, the second prevents that the pin passes the second in proper order and prevents changeing the matching hole and prevent changeing the spout and install in preventing changeing the screw, the second prevents changeing the pin and prevents changeing spout sliding connection, the second prevents changeing the matching hole, prevents changeing the screw and prevents changeing the.

The light ring driving lever is characterized in that a clamping convex block is arranged at the bottom of the light ring driving lever, a clamping strip-shaped hole is formed in the top of the light ring connecting rod, and the clamping convex block is connected with the clamping strip-shaped hole in a sliding mode.

An arc-shaped hole is communicated with the supporting frame of the rear lens group and is matched with the aperture connecting rod.

And an aperture damping is arranged between the aperture ring and the scale ring.

The shell outside is still provided with the PL bayonet socket.

The small cone is clamped at the bottom of the shell through a pressing plate.

And the top of the focusing secondary shifting ring adjusting ring is fixedly provided with an anti-halation front cover.

The utility model has the advantages that:

1. when the camera lens is adjusted by rotating the focusing ring, the focusing ring is rotated, the internal thread ring rotates along with the rotation of the focusing ring, the external thread ring slides along the central axis of the shell under the arrangement of the first thread, the second thread, the support frame rotation-preventing hole and the rotation-preventing pin, so that the support frame is driven to slide, the axis of the lens core is stretched and contracted, the support frame slides (namely the lens core) in the focusing process and is always positioned in the shell, the axial positions of the focusing ring and the front cover are always kept unchanged, the mechanical respiration during zooming of the camera lens is eliminated, the problem that the camera lens is inconvenient to use due to the fact that the camera lens has a mechanical respiration shading hopper is solved, and the camera lens is enabled to be more suitable for the operation habit of a photographer.

2. The sliding of the support frame (namely the lens core) is always positioned in the shell in the focusing process and the aperture adjusting process, and the axial positions of the focusing ring and the aperture ring in the shell are unchanged, so that the positions of the focusing ring and the aperture ring are still unchanged even if a new lens is replaced, and a photographer can match the focus follower with a camera lens without readjusting the position of the focus follower, so that the photographer can replace the lens more conveniently, and the photographing experience of the photographer is greatly improved.

3. Under the action of the focusing ring, the internal thread ring, the focusing secondary shifting block, the focusing secondary shifting ring, the external thread ring, the focusing secondary shifting ring adjusting ring, the support frame and the front lens group support frame, the rear lens group, the middle lens group and the front lens group slide downwards relative to the support frame while sliding upwards relative to the shell; in the process of integral upward sliding, the front lens group is close to the middle lens group downwards, the structure is simple, the processing and the production are easy, and in the production and processing process of the camera lens, the accurate focusing of the secondary lens group is realized and the cost is lower.

To sum up, the utility model discloses accord with cameraman's operation custom when being used for making a video recording more, make cameraman's the process of making a video recording convenient and fast more, and the utility model discloses compare in the camera lens cost greatly reduced of complicacy.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line E-E of FIG. 2 according to the present invention;

fig. 4 is a schematic structural view of the housing of the present invention;

FIG. 5 is a schematic structural view of a focusing ring according to the present invention;

fig. 6 is a schematic bottom view of the female threaded ring of the present invention;

fig. 7 is a schematic structural view of the external and internal threaded ring of the present invention;

FIG. 8 is a schematic structural view of a stand according to the present invention;

fig. 9 is a schematic structural view of an aperture ring according to the present invention;

FIG. 10 is a schematic structural view of a middle aperture shift lever according to the present invention;

fig. 11 is a schematic structural view of a middle aperture connecting rod according to the present invention;

FIG. 12 is a schematic view of a rear lens group according to the present invention;

fig. 13 is a schematic structural view of the middle aperture rotary table of the present invention;

FIG. 14 shows a middle aperture blade base of the present invention;

fig. 15 is a schematic structural view of the middle scale ring of the present invention;

fig. 16 is a schematic structural view of an adjusting ring of the present invention;

fig. 17 is a schematic structural view of a locking ring of a middle front lens group according to the present invention;

fig. 18 is a schematic structural view of the focusing second-stage shift block of the present invention;

fig. 19 is a schematic structural view of the middle focusing second-stage shift ring of the present invention;

fig. 20 is a schematic structural view of a middle-focusing second-stage shift ring adjusting ring of the present invention;

FIG. 21 is a schematic structural view of a front lens group holder according to the present invention;

fig. 22 is a schematic top view of the external thread ring of the present invention;

fig. 23 is an exploded view of the middle lens group, the front lens group and the front lens group holder of the present invention;

fig. 24 is an exploded view of the assembly of the present invention.

In the figure, a front cover 1, a shell 2, a second front cover mounting hole 2.2, a first anti-rotation matching hole 2.3, a focusing ring 3, a first internal thread ring fixing hole 3.1, an internal thread ring 4, a second internal thread ring fixing hole 4.2, a first focusing secondary shifting block mounting hole 4.3, an external thread ring 5, a first support fixing hole 5.1, a support 6, a second support fixing hole 6.2, a support anti-rotation hole 6.3, a first rear lens group mounting hole 6.4, a second anti-rotation matching hole 6.5, a diaphragm ring 7, a first diaphragm mounting hole 7.1, a diaphragm deflector rod 8, a second diaphragm deflector rod mounting hole 8.1, a clamping lug 8.2, a diaphragm connecting rod 9, a first diaphragm turntable fixing hole 9.1, a clamping strip-shaped hole 9.2, a rear lens group 10, a diaphragm hole 10.1, a second rear lens group mounting hole 10.4, a diaphragm turntable 11, a second diaphragm fixing hole 11.1, a bayonet base 12.1, a bayonet blade base 12, a PL 15, a damping ring 15, a PL scale ring 15, a diaphragm ring 15, a first anti-rotation matching hole 6.1, a, The focusing mechanism comprises an adjusting ring 16, a middle lens group 17, an anti-rotation screw hole 17.1, a front lens group 18, an anti-rotation sliding groove 18.1, a front lens group locking ring 19, a focusing secondary shifting block 20, a second focusing secondary shifting block mounting hole 20.3, a focusing secondary shifting ring 21, a clamping groove 21.1, a focusing secondary shifting ring adjusting ring 22, a front lens group support frame 23, a small cone 24, a pressing plate 25, an anti-halation front cover 26, a first anti-rotation pin 27 and a second anti-rotation pin 28.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

Referring to fig. 1 to 24, an embodiment of the present invention provides a camera lens for photographing, including a front cover 1, a housing 2, a focusing ring 3, an internal thread ring 4, an external thread ring 5, a supporting frame 6, a diaphragm ring 7, a rear lens group 10, a diaphragm shift lever 8, a diaphragm connecting rod 9, a rear lens group 10, a diaphragm turntable 11, a diaphragm blade base 12, a scale ring 13, a middle lens group 17, a front lens group 18, and a front lens group supporting frame 23.

Firstly, focusing of a camera lens:

front shroud 1 is installed on 2 tops of casing, and little cone 24 is installed through clamp plate 25 in 2 bottoms of casing, be provided with a plurality of first front shroud mounting holes on the front shroud 1, be provided with a plurality of second front shroud mounting holes 2.2 on the casing 2, first front shroud mounting hole and second front shroud mounting hole 2.2 one-to-one set up, insert first front shroud mounting hole and second front shroud mounting hole 2.2 through the screw and carry out fixed mounting (refer to fig. 3 and fig. 4) in the assembling process, and the shading fill that is used for blockking and absorbing light at the photographic in-process is installed in the front shroud 1 outside.

The outer part of the shell 2 is sequentially provided with an external thread ring 5, an internal thread ring 4 and a focusing ring 3 from inside to outside.

The focusing ring 3 is fixedly connected with the internal thread ring 4, a plurality of first internal thread ring fixing holes 3.1 are formed in the focusing ring 3, a plurality of second internal thread ring fixing holes 4.2 are formed in the internal thread ring 4, the first internal thread ring fixing holes 3.1 and the second internal thread ring fixing holes 4.2 correspond to each other one by one, and the first internal thread ring fixing holes 3.1 and the second internal thread ring fixing holes 4.2 are inserted into the screws in the assembling process to be fixedly installed (refer to fig. 3, 5 and 6).

Internal thread ring 4 rotates with 2 outer walls of casing to be connected, has the clearance between casing 2 and the internal thread ring 4, and external thread ring 5 can be in clearance reciprocating sliding, 5 inner walls of external thread ring and 2 sliding connection of casing, external thread ring 5 and internal thread ring 4 are through first threaded connection.

The inner wall of the shell 2 is connected with a support frame 6 in a sliding mode, the support frame 6 is fixedly connected with an external thread ring 5, a first support frame fixing hole 5.1 is formed in the external thread ring 5, a plurality of second support frame fixing holes 6.2 are formed in the support frame 6, the first support frame fixing holes 5.1 and the second support frame fixing holes 6.2 are arranged in a one-to-one correspondence mode, and in the assembling process, screws are inserted into the first support frame fixing holes 5.1 and the second support frame fixing holes 6.2 to be fixedly installed (refer to fig. 3, 7 and 8).

The outer wall of the support frame 6 is provided with a support frame rotation-proof hole 6.3, (refer to fig. 8) a first rotation-proof pin 27 is arranged in the support frame rotation-proof hole 6.3, and the side wall of the shell 2 is also provided with a first rotation-proof matching hole 2.3 (refer to fig. 4 and fig. 24) matched with the first rotation-proof pin.

When the focusing ring 3 is rotated to adjust the camera lens, the focusing ring 3 is rotated, the internal thread ring 4 rotates along with the rotation, the external thread ring 5 slides along the central axis of the shell 2 under the arrangement of the first thread, the support frame rotation-preventing hole 6.3 and the first rotation-preventing pin 27, so as to drive the support frame 6 to slide (the support frame 6 cannot rotate and only can slide due to the arrangement of the first rotation-preventing pin 27), and the lens core of the camera lens, namely the rear lens group 10, the middle lens group 17 and the front lens group 18, slides integrally along with the support frame 6, so that the axis extension and contraction of the lens core are realized, the sliding of the support frame 6 (namely the lens core) is always positioned in the shell 2 in the focusing process, and the axial positions of the focusing ring 3 and the front cover 1 are always kept unchanged, so as to eliminate the mechanical respiration during the focusing of the camera lens.

A focusing secondary toggle ring 21 is rotatably connected inside the support frame 6, the focusing secondary toggle ring 21 is collinear with the central axis of the support frame 6, a front lens group support frame 23 is arranged inside the focusing secondary toggle ring 21, a front lens group 18 is arranged inside the front lens group support frame 23, the front lens group 18 is clamped in the front lens group support frame 23 through a front lens group locking ring 19, a rear lens group 10 is fixedly arranged at the bottom of the support frame 6, an intermediate lens group 17 is arranged between the rear lens group 10 and the front lens group 18, the central axes of the front lens group 18, the intermediate lens group 17 and the rear lens group 10 are collinear, the intermediate lens group 17 is fixedly connected with the support frame 6, a plurality of first rear lens group mounting holes 6.4 are arranged at the bottom of the support frame 6, a plurality of second rear lens group mounting holes 10.4 are arranged on the rear lens group 10, the first rear lens group mounting holes 6.4 and the second rear lens group mounting holes 10.4 are arranged in a one-to-one correspondence, and are inserted into the first rear lens group mounting holes 6., Fig. 8 and 12).

A focusing secondary toggle adjusting ring 22 is fixedly mounted (fastened by screws) on the top of the front lens group support frame 23 (the front lens group support frame 23 and the focusing secondary toggle adjusting ring 22 do axial linear motion and do not do rotary motion as a whole), the focusing secondary toggle adjusting ring 22 is connected with the focusing secondary toggle 21 through a second thread, and the transmission ratios (speed ratios) of the second thread and the first thread are different (in this way, when the focusing ring 3 is rotated, the front lens group 18, the middle lens group 17 and the rear lens group 10 slide at different rates to perform a secondary adjustment function).

The top of the focusing secondary dial ring adjusting ring 22 is also fixedly provided with an anti-halation front cover 26.

The top of the internal thread ring 4 is fixedly provided with a focusing secondary shifting block 20, the top of the internal thread ring 4 is provided with a plurality of first focusing secondary shifting block mounting holes 4.3, the focusing secondary shifting block 20 is communicated with a plurality of second focusing secondary shifting block mounting holes 20.3, the first focusing secondary shifting block mounting holes 4.3 and the second focusing secondary shifting block mounting holes 20.3 are arranged in a one-to-one correspondence manner, and the screws are inserted into the first focusing secondary shifting block mounting holes 4.3 and the second focusing secondary shifting block mounting holes 20.3 to be fixedly mounted in the assembling process (refer to fig. 3, 18 and 22).

A clamping groove 21.1 is formed in the side surface of the focusing secondary shifting ring 21, the tail end of the focusing secondary shifting block 20 extends into the clamping groove 21.1 and is in sliding connection with the clamping groove 21.1 (when the support frame 6 moves, the focusing secondary shifting block 20 can axially slide in the clamping groove 21.1 to offset axial displacement), a second anti-rotation structure is further arranged among the intermediate lens group 17, the front lens group 18 and the front lens group support frame 23, the second anti-rotation structure comprises a second anti-rotation matching hole 6.5, an anti-rotation screw hole 17.1, an anti-rotation sliding groove 18.1 and a plurality of second anti-rotation pins 28 matched with the anti-rotation screw holes 17.1, a plurality of second anti-rotation matching holes 6.5 are formed in the side wall of the support frame 6, a plurality of anti-rotation sliding grooves 18.1 are formed in the side surface of the front lens group 18, a plurality of anti-rotation screw holes 17.1 are formed in the side surface of the intermediate lens group 17, the second anti-rotation pins 28 sequentially pass through the second anti-rotation matching holes 6.5 and the anti-rotation sliding grooves 18.1 and are installed in the anti-rotation sliding connection with the intermediate anti-rotation sliding pins 18.1 (namely And the position difference of the rear lens group 10 due to different displacement rates when adjusting the focal length), the second anti-rotation matching hole 6.5, the anti-rotation screw hole 17.1 and the anti-rotation sliding groove 18.1 are arranged in one-to-one correspondence (refer to fig. 3, fig. 19, fig. 23 and fig. 24).

The intermediate lens group 17 and the rear lens group 10 move integrally with the support frame 6, and the front lens group 18 and the front lens group support frame 23 move toward or away from the intermediate lens group 17 according to different transmission ratios when the support frame 6 moves integrally.

The working principle is as follows:

referring to fig. 3, in focusing on the camera lens:

1) a rotary focusing ring 3;

2) the (X) internal thread ring 4 rotates along with the (Y) internal thread ring 4, the focusing secondary shifting block 20 on the internal thread ring 4 synchronously rotates, and the focusing secondary shifting ring 21 rotates along with the internal thread ring;

3) the (X) external thread ring 5 slides upwards along the central axis of the shell 2, (Y) the focusing secondary ring-pulling adjusting ring 22 slides along the central axis of the shell 2 and (X) slides at different rates;

4) (X) the supporting frame 6 slides upwards relative to the shell 2 (Y), and due to different transmission ratios of the first screw thread and the second screw thread, the front lens group supporting frame 23 slides upwards relative to the shell 2 along with the supporting frame 6, and simultaneously, the front lens group supporting frame 23 slides downwards relative to the supporting frame 6, so that the function of focusing the lens is realized;

5) (X) the rear lens group 10, the intermediate lens group 17 and the front lens group 18 slide upward with respect to the housing 2 as a whole (Y) the front lens group 18 slides downward with respect to the support frame 6; i.e. front lens group 18 is brought down close to intermediate lens group 17 during the entire upward sliding movement.

6) The accurate focusing function of the camera lens is realized.

X-integral movement process of the lens core relative to the shell 2; Y-Secondary adjustment procedure of front mirror group 17 with respect to holder 6.

The structure is simple, the processing and the production are easy, in the production and the processing processes of the camera lens, the accurate focusing of the secondary lens group is realized, and the cost is lower.

Adjusting the aperture of the camera lens:

the utility model discloses a focusing mechanism, including casing 2, light ring 7 and scale ring 13, scale ring 13 sets up between light ring 7 and focusing ring 3, be provided with adjusting ring 16 between scale ring 13 and the internal thread ring 4, scale ring 13 and adjusting ring 16 fixed connection, be provided with a plurality of first scale ring mounting holes on adjusting ring 16, be provided with second scale ring mounting hole on scale ring 13, and then make scale ring 13 and adjusting ring 16's fixed mounting more convenient at the assembly process, the assembly degree of difficulty has been alleviateed.

The aperture ring 7 is rotatably connected with the shell 2, the bottom of the aperture ring 7 is fixedly connected with an aperture shift lever 8, the aperture shift lever 8 is slidably connected with an aperture connecting rod 9, the bottom of the aperture shift lever 8 is provided with a clamping convex block 8.2, the top of the aperture connecting rod 9 is provided with a clamping strip-shaped hole 9.2, the clamping convex block 8.2 is slidably connected with the clamping strip-shaped hole 9.2, the support frame 6 axially slides back and forth along the shell 2 in the process of adjusting the focusing ring 3, the rear lens group 10 can also slide along with the support frame 6, at the moment, the axial position of the aperture ring 7 is unchanged, the clamping convex block 8.2 slides in the clamping strip-shaped hole 9.2 in an adaptive manner, and further, the aperture ring 7 can still be adjusted in the focusing process by rotating the aperture ring 7, and the axial positions of the aperture ring 7 and the focusing ring 3 are unchanged.

A plurality of first aperture deflector rod mounting holes 7.1 are formed in the aperture ring 7, a plurality of second aperture deflector rod mounting holes 8.1 are formed in the top end of the aperture deflector rod 8, the first aperture deflector rod mounting holes 7.1 and the second aperture deflector rod mounting holes 8.1 are arranged in a one-to-one correspondence manner, and the first aperture deflector rod mounting holes 7.1 and the second aperture deflector rod mounting holes 8.1 are inserted through screws in the assembling process to be fixedly mounted (refer to fig. 3, 9 and 10).

The rear mirror group 10 (refer to fig. 3 and 12) comprises a supporting frame and a rear mirror core, the rear mirror core is mounted at the bottom of an inner cavity of the supporting frame, an aperture rotary table 11 and an aperture blade base 12 (refer to fig. 3, 13 and 14) are arranged inside the supporting frame, the aperture rotary table 11 is rotatably connected with the supporting frame, a plurality of first aperture rotary table fixing holes 9.1 are arranged at the bottom end of an aperture connecting rod 9.1, a plurality of second aperture rotary table fixing holes 11.1 are arranged on the aperture rotary table 11, the first aperture rotary table fixing holes 9.1 and the second aperture rotary table fixing holes 11.1 are arranged in a one-to-one correspondence manner, an arc-shaped hole 10.1 is arranged on a supporting frame of the rear mirror group 10 in a penetrating manner through a screw in the assembling process (refer to fig. 3, 11 and 13), the arc-shaped hole 10.1 is arranged in a matching manner with the aperture connecting rod 9, rotate aperture ring 7 and drive aperture driving lever 8 and rotate when adjusting the light ring size, and then drive the light ring and connect pole 9 and aperture carousel 11 to rotate, the light ring connects the junction that pole 9 and aperture carousel 11 to pass braced frame, and is exactly owing to the realization of above-mentioned motion has been guaranteed to the arc hole 10.1 that sets up.

The diaphragm plate is characterized in that a diaphragm blade base 12 (refer to fig. 15) is arranged above the diaphragm turntable 11, the diaphragm blade base 12 is fixedly connected with a supporting frame, a through hole is formed in the center of the diaphragm blade base 12 in a penetrating mode, a plurality of strip-shaped holes (12-17) are formed in the radial direction of the through hole and used for being matched with the diaphragm blades, the diaphragm blades are installed between the diaphragm blade base 12 and the diaphragm turntable 11 and installed by adopting an assembling method well known by technical personnel in the field, and the diaphragm turntable 11 rotates to drive the blades to open and close, so that the size of the diaphragm is adjusted.

An aperture damper 14 is arranged between the aperture ring 7 and the scale ring 13.

The outer side of the shell 2 is also provided with a PL bayonet 15, and the PL bayonet 15 is a movie lens switching bayonet and is used for replacing lenses and generally locking the lenses in a clockwise rotation mode.

Adjustment process (aperture adjustment and lens focusing do not interfere with each other):

a focusing process: the focusing ring 3 is rotated, the internal thread ring 4 rotates along with the rotation, the external thread ring 5 slides along the central axis of the shell 2, the support frame 6 slides (the clamping convex block 8.2 slides in the clamping strip-shaped hole 9.2 in an adaptive manner to ensure the aperture adjusting function), the axis of the lens core stretches, and the function of focusing the lens is realized.

The aperture adjusting process: the function of adjusting the lens aperture is realized by rotating the aperture ring 7, rotating the aperture deflector rod 8, rotating the aperture connecting rod 9 and the aperture turntable 11, and opening and closing the aperture blades.

The sliding of the support frame 6 (namely the lens core) is always positioned in the shell 2 in the focusing process and the diaphragm adjusting process, and the axial positions of the focusing ring 3 and the diaphragm ring 7 in the shell 2 are unchanged, so that the positions of the focusing ring 3 and the diaphragm ring 7 are still unchanged even a new lens is replaced, and a photographer can match the focus follower with a camera lens without readjusting the position of the focus follower, so that the lens replacement of the photographer is more convenient, and the shooting experience of the photographer is greatly improved.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (9)

1. A camera lens for shooting comprises a front cover (1), a shell (2), a focusing ring (3), an internal thread ring (4), an external thread ring (5), a support frame (6), a diaphragm ring (7), a rear lens group (10), a diaphragm deflector rod (8), a diaphragm connecting rod (9), the rear lens group (10), a diaphragm turntable (11), a diaphragm blade base (12), a scale ring (13), a middle lens group (17), a front lens group (18) and a front lens group support frame (23), and is characterized in that the front cover (1) is installed at the top end of the shell (2), a small cone (24) is installed at the bottom end of the shell (2), the external thread ring (5), the internal thread ring (4) and the focusing ring (3) are sequentially arranged outside the shell (2) from inside to outside, the focusing ring (3) is fixedly connected with the internal thread ring (4), the internal thread ring (4) is rotatably connected with the outer wall of the shell (2, the outer thread ring (5) is connected with the inner thread ring (4) through a first thread, the inner wall of the shell (2) is connected with a support frame (6) in a sliding manner, the support frame (6) is fixedly connected with the outer thread ring (5), the support frame (6) is provided with a first anti-rotation structure, the support frame (6) is internally connected with a focusing secondary shifting ring (21) in a rotating manner, the focusing secondary shifting ring (21) is collinear with the central axis of the support frame (6), the focusing secondary shifting ring (21) is internally provided with a front lens group support frame (23), a front lens group (18) is arranged in the front lens group support frame (23), the front lens group (18) is clamped in the front support frame (23) through a front lens group locking ring (19), the bottom of the support frame (6) is fixedly provided with a rear lens group (10), a middle lens group (17) is arranged between the rear lens group (10) and the front lens group (18), the middle lens group (17) is fixedly connected with the support frame (6), the top of the front lens group support frame (23) is fixedly provided with a focusing secondary shifting ring adjusting ring (22), the focusing secondary shifting ring adjusting ring (22) is connected with the focusing secondary shifting ring (21) through a second thread, the transmission ratio of the second thread to the first thread is different, the top of the internal thread ring (4) is fixedly provided with a focusing secondary shifting block (20), the side surface of the focusing secondary shifting ring (21) is communicated with a clamping groove (211), the tail end of the focusing secondary shifting block (20) extends into the clamping groove (211) and is in sliding connection with the clamping groove (211), and a second anti-rotation structure is further arranged among the middle lens group (17), the front lens group (18) and the front lens group support frame (23);

the outer side of the shell (2) is also provided with a diaphragm ring (7) and a scale ring (13), the scale ring (13) is arranged between the diaphragm ring (7) and the focusing ring (3), an adjusting ring (16) is arranged between the scale ring (13) and the internal thread ring (4), the scale ring (13) is fixedly connected with the adjusting ring (16), the diaphragm ring (7) is rotatably connected with the shell (2), the bottom of the diaphragm ring (7) is fixedly connected with a diaphragm driving lever (8), the diaphragm driving lever (8) is slidably connected with a diaphragm connecting rod (9), the rear mirror group (10) comprises a supporting frame and a rear mirror core, the rear mirror core is arranged at the bottom of the inner cavity of the supporting frame, a diaphragm turntable (11) and a diaphragm blade base (12) are arranged inside the supporting frame, the diaphragm turntable (11) is rotatably connected with the supporting frame and is fixedly connected with the diaphragm connecting rod (9), the diaphragm blade base (12) is arranged above the diaphragm turntable (11), the diaphragm blade base (12) is fixedly connected with the supporting frame.

2. The camera lens for shooting according to claim 1, wherein the first anti-rotation structure comprises a plurality of support anti-rotation holes (6.3) and first anti-rotation pins (27) matched with the support anti-rotation holes (6.3), the support anti-rotation holes (6.3) are all arranged on the outer wall of the support (6), the first anti-rotation pins (27) are installed in the support anti-rotation holes (6.3), and the side wall of the shell (2) is further communicated with the first anti-rotation matching holes (2.3) matched with the first anti-rotation structure.

3. The camera lens for photographing according to claim 1, the second anti-rotation structure comprises a second anti-rotation matching hole (6.5), an anti-rotation screw hole (17.1), an anti-rotation sliding groove (18.1) and a plurality of second anti-rotation pins (28) matched with the anti-rotation screw hole (17.1), a plurality of second anti-rotation matching holes (6.5) are formed in the side wall of the support frame (6), a plurality of anti-rotation sliding grooves (18.1) are formed in the side surface of the front lens group (18), a plurality of anti-rotation screw holes (17.1) are formed in the side surface of the middle lens group (17), the second anti-rotation pin (28) sequentially passes through the second anti-rotation matching hole (6.5) and the anti-rotation sliding groove (18.1) and is arranged in the anti-rotation screw hole (17.1), the second prevents changeing pin (28) and prevents changeing spout (18.1) sliding connection, the second prevents changeing matching hole (6.5), prevents changeing screw (17.1) and prevents changeing spout (18.1) one-to-one setting.

4. The camera lens for taking pictures according to claim 1, wherein the bottom of the aperture deflector rod (8) is provided with a clamping convex block (8.2), the top of the aperture extension rod (9) is provided with a clamping strip-shaped hole (9.2), and the clamping convex block (8.2) is connected with the clamping strip-shaped hole (9.2) in a sliding manner.

5. A camera lens for taking pictures according to claim 1, characterized in that an arc-shaped hole (10.1) is formed through the supporting frame of the rear lens group (10), and the arc-shaped hole (10.1) is matched with the aperture extension rod (9).

6. A camera lens usable for image pickup according to claim 1, characterized in that an aperture damper (14) is provided between the aperture ring (7) and the scale ring (13).

7. A camera lens usable for photographing according to claim 1, wherein a PL bayonet (15) is further provided outside the housing (2).

8. A camera lens usable for taking pictures according to claim 1, characterized in that the small cone (24) is clamped at the bottom of the housing (2) by a pressure plate (25).

9. The camera lens for shooting according to claim 1, characterized in that the focusing secondary dial ring adjusting ring (22) is fixedly provided with an anti-halation front cover (26) on top.

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