A manual focusing module without blurring

Abstract

The present invention discloses a manual focusing module without false focus, which includes a casing connection base, a clamping ring, a movable focusing wheel and a movable focusing ring; a base light-transmitting through hole is provided in the middle position of the casing connection base, and a base upper end flange is provided on the periphery of the base light-transmitting through hole; the clamping ring is installed at the upper end of the base upper end flange; the movable focusing wheel is installed at the periphery of the clamping ring, and the lower end of the movable focusing wheel is clamped between the clamping ring and the upper end flange of the base, and when in use, the movable focusing wheel can rotate relative to the clamping ring and the casing connection base; the movable focusing ring is located on the upper end side of the clamping ring, and the movable focusing ring is connected to the upper end of the movable focusing wheel, a focus ring light-transmitting through hole is provided in the middle position of the movable focusing ring, and an internal thread is provided on the inner wall of the focus ring light-transmitting through hole; the movable focusing ring is provided with at least three focus ring mounting holes, and a glass bead spring is respectively embedded in each focus ring mounting hole. Through the above structural design, the present invention has the advantages of novel design, good stability and reliability, and focusing without false focus.

Description

Technical Field

[0001] The invention relates to the technical field of optical devices, and in particular to a manual focusing module without false focus. Background Art

[0002] For a camera, during the process of taking photos or videos, in order to ensure the clarity of the photos or images taken, the camera lens of the camera needs to be focused during use.

[0003] It should be pointed out that for the lens modules of existing cameras, serious out-of-focus phenomenon will occur during the focusing process, which will affect the camera quality and make it difficult to meet the high-quality and high-precision image quality requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a manual focusing module without out-of-focus in view of the deficiencies in the prior art. The manual focusing module without out-of-focus has a novel structural design, good stability and reliability, and can focus without out-of-focus.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A manual focusing module without false focus comprises a housing connection base, a clamping ring, a movable focusing wheel and a movable focusing ring;

[0007] A base light-transmitting through hole that completely penetrates from top to bottom is opened in the middle of the housing connection base, and a base upper end flange that protrudes and extends upward is arranged on the periphery of the base light-transmitting through hole of the housing connection base;

[0008] The clamping ring is in the shape of a circular ring and is mounted on the upper end of the flange of the upper end of the base where the casing is connected to the base;

[0009] The movable focusing wheel is in the shape of a circular ring, and is mounted on the periphery of the clamping ring. The lower end of the movable focusing wheel is clamped between the clamping ring and the upper end flange of the base of the housing connection base. When in use, the movable focusing wheel can rotate 360 ​​degrees relative to the clamping ring and the housing connection base.

[0010] The movable focusing ring is located on the upper end side of the retaining ring, and the movable focusing ring is connected to the upper end of the movable focusing wheel. A focusing ring light-transmitting through hole is provided in the middle position of the movable focusing ring, which is completely penetrated from top to bottom and aligned with the base light-transmitting through hole connected to the base of the casing. The inner wall of the focusing ring light-transmitting through hole is provided with an internal thread. The movable focusing ring is provided with at least three focusing ring mounting holes which are evenly spaced in a circular ring shape and open downward respectively. A vertically arranged glass bead spring is embedded in each focusing ring mounting hole, and the steel ball of each glass bead spring is respectively in contact with the upper surface of the retaining ring.

[0011] Wherein, the outer surface of the flange at the upper end of the base of the housing connected to the base is provided with a base limiting protrusion protruding outward, and the base limiting protrusion and the flange at the upper end of the base are an integrated structure;

[0012] The inner wall of the movable focusing wheel is provided with a focusing wheel limiting protrusion protruding inwardly, the focusing wheel limiting protrusion and the movable focusing wheel are an integrated structure, the focusing wheel limiting protrusion is located between the edge of the clamping ring and the base limiting protrusion, the base limiting protrusion limits the focusing wheel limiting protrusion at the lower end, and the edge of the clamping ring limits the focusing wheel limiting protrusion at the upper end.

[0013] Wherein, the upper end flange of the base and the casing connecting base are an integral structure.

[0014] Wherein, the clamping ring is screwed and fastened to the upper end flange of the base of the casing connection base by means of a locking screw.

[0015] Wherein, the upper end portion of the movable focus wheel is threadedly connected to the edge portion of the movable focus ring through a locking screw.

[0016] Wherein, the movable focusing ring is equipped with three, four, five or six glass bead springs.

[0017] Wherein, the outer wall of the movable focusing wheel is provided with a groove.

[0018] The beneficial effects of the present invention are as follows: the manual focusing module without false focus of the present invention comprises a housing connection base, a clamping ring, a movable focusing wheel and a movable focusing ring; a base light-transmitting through hole which completely penetrates from top to bottom is opened in the middle position of the housing connection base, and an upper flange of the base which protrudes upward and extends is arranged on the periphery of the base light-transmitting through hole of the housing connection base; the clamping ring is in the shape of a circular ring, and the clamping ring is installed on the upper end of the upper flange of the base of the housing connection base; the movable focusing wheel is in the shape of a circular ring, and the movable focusing wheel is installed on the periphery of the clamping ring, and the lower end of the movable focusing wheel is clamped between the clamping ring and the upper flange of the base of the housing connection base, and is used The movable focusing wheel can rotate 360 ​​degrees relative to the clamping ring and the housing connection seat; the movable focusing ring is located on the upper end side of the clamping ring, and the movable focusing ring is connected to the upper end of the movable focusing wheel. The middle position of the movable focusing ring is provided with a focusing ring light-transmitting through hole that completely penetrates from top to bottom and is aligned with the base light-transmitting through hole of the housing connection base, and the inner wall of the focusing ring light-transmitting through hole is provided with an internal thread; the movable focusing ring is provided with at least three focusing ring mounting holes that are evenly spaced and open downward in a circular ring shape, and each focusing ring mounting hole is respectively embedded with a vertically arranged glass bead spring, and the steel ball of each glass bead spring is respectively in contact with the upper surface of the clamping ring. Through the above structural design, the present invention has the advantages of novel structural design, good stability and reliability, and focusing without false focus. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with the aid of the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the decomposition of the present invention.

[0022] Figure 3 It is a cross-sectional schematic diagram of the present invention.

[0023] exist Figures 1 to 3 Included are:

[0024] 1——Casing connection base 11——Base light-transmitting through hole

[0025] 12—— flange on the upper end of the base 13—— limiting protrusion on the base

[0026] 2——Snap ring 3——Moveable focusing wheel

[0027] 31——focus wheel limit protrusion 32——groove

[0028] 4——Active focus ring 41——Light-transmitting hole for focus ring

[0029] 42——Internal thread 43——Focus ring mounting hole

[0030] 5——Glass bead spring 6——Locking screw. DETAILED DESCRIPTION

[0031] The present invention is described below in conjunction with specific implementation methods.

[0032] like Figures 1 to 3 As shown, a manual focusing module without out-of-focus includes a housing connecting base 1, a clamping ring 2, a movable focusing wheel 3 and a movable focusing ring 4.

[0033] A base light-transmitting through hole 11 is provided in the middle of the housing connection base 1, and a base upper flange 12 extending upward is provided on the periphery of the base light-transmitting through hole 11. Preferably, the base upper flange 12 and the housing connection base 1 are an integral structure.

[0034] Furthermore, the clamping ring 2 is in a circular ring shape and is mounted on the upper end of the base upper end flange 12 of the casing connection base 1 .

[0035] Furthermore, the movable focusing wheel 3 is in the shape of a circular ring and is installed on the periphery of the retaining ring 2. The lower end of the movable focusing wheel 3 is clamped between the retaining ring 2 and the upper end flange 12 of the base of the casing connection base 1. When in use, the movable focusing wheel 3 can rotate 360 ​​degrees relative to the retaining ring 2 and the casing connection base.

[0036] In addition, the movable focus ring 4 is located at the upper end side of the clamp ring 2, and the movable focus ring 4 is connected to the upper end of the movable focus wheel 3. The middle position of the movable focus ring 4 is provided with a focus ring light-transmitting through hole 41 which completely penetrates from top to bottom and is aligned with the base light-transmitting through hole 11 of the housing connection base 1. The inner wall of the focus ring light-transmitting through hole 41 is provided with an internal thread 42. The movable focus ring 4 is provided with at least three focus ring mounting holes 43 which are evenly spaced and open downwards in a circular ring shape. Each focus ring mounting hole 43 is respectively embedded with a vertically arranged glass bead spring 5, and the steel ball of each glass bead spring 5 is respectively in contact with the upper surface of the clamp ring 2. Preferably, the movable focus ring 4 is equipped with three, four, five or six glass bead springs 5.

[0037] In order to ensure that the movable focusing wheel 3 can be relatively rotated 360 degrees and clamped between the retaining ring 2 and the base upper end flange 12 of the casing connecting base 1, the present invention adopts the following structural design, specifically: the outer surface of the base upper end flange 12 of the casing connecting base 1 is provided with a base limiting protrusion 13 protruding outward, and the base limiting protrusion 13 and the base upper end flange 12 are an integral structure; the inner wall of the movable focusing wheel 3 is provided with a focusing wheel limiting protrusion 31 protruding inward, and the focusing wheel limiting protrusion 31 and the movable focusing wheel 3 are an integral structure, the focusing wheel limiting protrusion 31 is located between the edge of the retaining ring 2 and the base limiting protrusion 13, the base limiting protrusion 13 limits the lower end of the focusing wheel limiting protrusion 31, and the edge of the retaining ring 2 limits the upper end of the focusing wheel limiting protrusion 31.

[0038] As a preferred embodiment, Figures 1 to 3 As shown, the clamping ring 2 is screwed and fastened to the upper flange 12 of the housing connection base 1 by means of the locking screw 6, and the upper end of the movable focus wheel 3 is screwed to the edge of the movable focus ring 4 by means of the locking screw 6. Of course, the above-mentioned screwing assembly method does not constitute a limitation to the present invention, that is, the clamping ring 2 of the present invention can be buckled to the upper end of the upper flange 12 of the base by means of buckling, and the movable focus wheel 3 of the present invention can also be buckled to the edge of the movable focus ring 4 by means of buckling.

[0039] It should be noted that a groove 32 is provided on the outer wall of the movable focusing wheel 3 ; when the user manually rotates the movable focusing wheel 3 , the groove 32 structure can effectively increase the friction force when the finger acts, thereby increasing the convenience of manually rotating the movable focusing wheel 3 .

[0040] It is necessary to further explain that, for the housing connection base 1 of the present invention, it is locked and installed on the housing of the camera lens; wherein, the housing connection base 1 can be fastened and installed with the housing of the camera lens by screwing or snapping. For the lens assembly of the camera lens, it is installed in the focus ring light-transmitting through hole 41 of the movable focus ring 4, and the above-mentioned lens assembly is screwed with the internal thread 42 of the inner wall of the focus ring light-transmitting through hole 41 through the external thread; it is necessary to point out that the lens assembly of the camera lens can only move up and down, and cannot rotate.

[0041] During the assembly process of the present invention, the clamping ring 2 is locked with the housing connection base 1 as a whole, and the movable focus wheel 3 is locked with the movable focus ring 4 as a whole. When the present invention is used for manual focusing, the user manually rotates the movable focus wheel 3, and the movable focus ring 4 rotates synchronously with the movable focus wheel 3. Since the internal thread 42 of the inner wall of the light-transmitting through hole 41 of the focus ring is screwed with the external thread of the lens assembly, during the rotation of the movable focus ring 4, the thread rotation depth between the movable focus ring 4 and the lens assembly will change. Since the movable focus ring 4 is fixed and cannot move in the Z-axis direction, it will push the lens assembly to move in the Z-axis direction, thereby realizing the lens focusing operation.

[0042] It should be further pointed out that the retaining ring 2 of the present invention is pressed downward by at least three glass bead springs 5, and each glass bead spring 5 of the present invention is kept in a compressed state during installation, that is, each glass bead spring 5 is kept pressed downward against the upper surface of the retaining ring 2, and the restoring elastic force of each glass bead spring 5 makes the upper surface of the focusing wheel protrusion keep in contact with the edge of the retaining ring 2, and the position where the focusing wheel protrusion contacts the edge of the retaining ring 2 can be defined as the initial position; in the case of movement, stillness, external force compression or vibration, the glass bead spring 5 of the present invention is always pressed on the surface of the retaining ring 2 and is in a compressed state, that is, the glass bead spring 5 of the present invention can ensure that the Z axis of the movable focusing ring 4 has no drift and always remains in the initial position. In addition, the plurality of glass bead springs 5 ​​of the present invention are evenly spaced in a circular ring shape, and the glass bead springs 5 ​​evenly spaced in a ring shape can act on the retaining ring 2 in a balanced and stable manner, that is, it can effectively avoid the phenomenon of the movable focusing wheel 3 and the movable focusing ring 4 swinging during the focusing operation, and can ensure the smoothness of the focusing action.

[0043] In summary, it can be seen that, through the above structural design, the present invention has the advantages of novel structural design, good stability and reliability, and focusing without false focus.

[0044] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A manual focusing module without false focus, characterized by: It comprises an organic shell connecting base (1), a clamping ring (2), a movable focusing wheel (3) and a movable focusing ring (4); A base light-transmitting through hole (11) which completely penetrates from top to bottom is provided in the middle of the housing connection base (1), and a base upper end flange (12) which protrudes upward and extends is provided on the periphery of the base light-transmitting through hole (11) of the housing connection base (1); The clamping ring (2) is in the shape of a circular ring and is mounted on the upper end of a flange (12) on the upper end of the base connecting the housing to the base (1); The movable focusing wheel (3) is in the shape of a circular ring and is mounted on the periphery of the clamping ring (2). The lower end of the movable focusing wheel (3) is clamped between the clamping ring (2) and the upper end flange (12) of the base of the housing connection base (1). When in use, the movable focusing wheel (3) can rotate 360 ​​degrees relative to the clamping ring (2) and the housing connection base. The movable focus ring (4) is located on the upper end side of the clamping ring (2), and the movable focus ring (4) is connected to the upper end of the movable focus wheel (3). A focus ring light-transmitting through hole (41) is provided in the middle position of the movable focus ring (4), which completely penetrates from top to bottom and is aligned with the base light-transmitting through hole (11) connected to the housing base (1). The inner wall of the focus ring light-transmitting through hole (41) is provided with an internal thread (42). The movable focus ring (4) is provided with at least three focus ring mounting holes (43) which are evenly spaced and open downwards in a circular ring shape. A vertically arranged glass bead spring (5) is respectively embedded in each of the focus ring mounting holes (43), and the steel ball of each glass bead spring (5) is respectively in contact with the upper surface of the clamping ring (2). The outer surface of the base upper end flange (12) of the housing connecting base (1) is provided with a base limiting protrusion (13) protruding outward, and the base limiting protrusion (13) and the base upper end flange (12) are an integral structure; The inner wall of the movable focusing wheel (3) is provided with a focusing wheel limiting protrusion (31) protruding inwardly, the focusing wheel limiting protrusion (31) and the movable focusing wheel (3) are an integral structure, the focusing wheel limiting protrusion (31) is located between the edge of the clamping ring (2) and the base limiting protrusion (13), the base limiting protrusion (13) limits the lower end of the focusing wheel limiting protrusion (31), and the edge of the clamping ring (2) limits the upper end of the focusing wheel limiting protrusion (31); The base upper end flange (12) and the housing connection base (1) are an integral structure.

2. The manual focusing module without false focus according to claim 1, characterized in that: The clamping ring (2) is screwed and fastened to the base upper end flange (12) of the housing connection base (1) by means of a locking screw (6).

3. The manual focusing module without false focus according to claim 1, characterized in that: The upper end of the movable focus wheel (3) is threadedly connected to the edge of the movable focus ring (4) via a locking screw (6).

4. The manual focusing module without false focus according to claim 1, characterized in that: The movable focus ring (4) is equipped with three, four, five or six glass bead springs (5).

5. The manual focusing module without false focus according to claim 1, characterized in that: The outer wall of the movable focusing wheel (3) is provided with a groove (32).

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