Lens with rear-mounted protective glass and camera

Abstract

The utility model discloses a lens with rear-mounted protective glass and a camera, and relates to the technical field of camera shooting, and the lens with the rear-mounted protective glass comprises a protective glass seat, the protective glass, a lens barrel and an imaging assembly. Wherein the protective glass base is annularly arranged, and the inner side face of the protective glass base is arranged in a step mode so as to form a first section and a second section, and the inner diameters of the first section and the second section are sequentially increased from front to back; the protective glass is arranged in an inner hole of the protective glass seat and corresponds to the first section; the lens cone is located on the front side of the protective glass and is detachably connected to the second section in the front-back direction; the imaging assembly is arranged in the lens cone; through the arrangement, the whole lens does not need to be dismounted, and the time and cost for factory repair are saved through dismounting the protective glass seat.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera technology field especially relates to a lens and camera of protection glass rear -positioned. BACKGROUND

[0002] At present, camera technology has been widely mature application, from mobile phone camera to security monitoring, all cannot do without lens. The quality of lens directly influences the quality of imaging, most lenses in domestic adopt the last one lens plus one protection glass, not only play the protection scratch and avoid the last one lens dirty, also can through the coating of protection glass, filter out the stray light that is not conducive to imaging, also have the effect of reducing reflection and increasing permeability.

[0003] When assembling the protection glass, generally, the lens barrel is directly placed vertically before leaving the factory, the protection glass is directly supported in the lens barrel supported by the spherical lens, and is fixed by point gluing or pressed ring locking. If the protection glass is dirty or scratched in the use terminal, the whole lens must be disassembled and returned to the factory for replacement of the protection glass. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a lens with rear protection glass, which can save the time and cost of returning to the factory for maintenance without disassembling the whole lens.

[0005] To achieve the above purpose, the lens with rear protection glass provided by the utility model comprises:

[0006] The protection glass seat is annularly arranged, and the inner side of the protection glass seat is step-shaped to form a first section and a second section with gradually increasing inner diameters from front to back;

[0007] The protection glass is arranged in the inner hole of the protection glass seat and corresponds to the first section;

[0008] The lens barrel is located at the front side of the protection glass and is detachably connected to the second section along the front and back directions; and

[0009] The imaging assembly is arranged in the lens barrel.

[0010] In an embodiment, the second section of the protection glass seat is provided with an inner thread for thread connection of the rear end of the lens barrel.

[0011] In an embodiment, the rear end of the lens barrel is provided with a sealing groove on the circumferential surface, and an O-ring is arranged in the sealing groove to seal with the protection glass seat.

[0012] In an embodiment, the protection glass is adhesively fixed with the protection glass seat; and / or

[0013] The lens barrel and the protective glass seat are threadedly connected and adhesively matched.

[0014] In an embodiment, the imaging assembly comprises a first lens, a spacer ring and a second lens arranged in sequence along the front-rear direction.

[0015] The spacer ring is annularly arranged and abuts against the first lens and the second lens respectively.

[0016] In an embodiment, the inner side of the lens barrel is stepped at the front end to form an abutting surface arranged towards the rear, and at least a portion of the front end of the imaging assembly abuts against the abutting surface.

[0017] The rear lens of the protective glass further comprises a pressing ring arranged in the lens barrel and located at the rear end of the lens barrel, and the front end surface of the pressing ring abuts against the rear end of the imaging assembly to press the imaging assembly on the lens barrel.

[0018] In an embodiment, a stepped surface arranged towards the front is formed at the connection between the first section and the second section.

[0019] The rear lens of the protective glass further comprises:

[0020] A sealing ring is annularly arranged and fixed to the stepped surface to abut against the rear end surface of the lens barrel.

[0021] In an embodiment, the rear lens of the protective glass further comprises a diaphragm fixedly connected to the rear end surface of the protective glass seat.

[0022] In an embodiment, the diaphragm and the protective glass seat are connected by bolts.

[0023] The utility model further provides a camera, including the rear lens of protective glass, the rear lens of protective glass, including:

[0024] A protective glass seat is annularly arranged, and the inner side of the protective glass seat is stepped to form a first section and a second section with gradually increasing inner diameters in the front-rear direction.

[0025] A protective glass is arranged in the inner hole of the protective glass seat and corresponds to the first section.

[0026] A lens barrel is located at the front side of the protective glass and detachably connected to the second section along the front-rear direction; and

[0027] An imaging assembly is arranged in the lens barrel.

[0028] The utility model discloses a technical scheme, through respectively setting up detachable connection's protection glass seat and mirror barrel, and with protection glass and imaging assembly are respectively arranged in protection glass seat and mirror barrel, make protection glass with imaging assembly split setting, when protection glass appears dirty or scratch, can through the disassembly protection glass seat and save the time and cost of factory maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to the structure shown in these drawings.

[0030] Figure 1 The structure schematic diagram of the embodiment of the lens of protection glass rear installation provided by the utility model is shown in the figure.

[0031] Explanation of reference numerals:

[0032] 100, the lens of protection glass rear installation;1, protection glass seat;11, first section;12, second section;121, internal thread;2, protection glass;3, mirror barrel;31, abutting surface;32, sealing groove;4, imaging assembly;41, first lens;42, spacer ring;43, second lens;5, compression ring;6, sealing ring;7, diaphragm;8, bolt.

[0033] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiment and referring to the drawings. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiment of the utility model will be clearly and completely described by combining with the drawings in the embodiment of the utility model, obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor belong to the scope of the utility model protection.

[0035] It should be noted that if the embodiment of the utility model involves directionality indication, the directionality indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly.

[0036] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0037] The utility model provides a lens 100 of protection glass 2 rear placement.

[0038] Please refer to Figure 1 In an embodiment of the utility model, the lens 100 of protection glass 2 rear placement includes protection glass seat 1, protection glass 2, lens barrel 3 and imaging assembly 4, wherein the protection glass seat 1 is annularly arranged, the inner side of protection glass seat 1 is stepped to form the first section 11 and the second section 12 that the inner diameter increases in turn from front to back, the protection glass 2 is arranged in the inner hole of protection glass seat 1 and corresponds the first section 11, the lens barrel 3 is located at the front side of protection glass 2 and is detachably connected to the second section 12 along the front and back, and the imaging assembly 4 is arranged in the lens barrel 3.

[0039] In the technical scheme of the utility model, the protection glass seat 1 and the lens barrel 3 are detachably connected by being arranged respectively, and the protection glass 2 and the imaging assembly 4 are arranged in the protection glass seat 1 and the lens barrel 3 respectively, so that the protection glass 2 and the imaging assembly 4 are arranged separately, when the protection glass 2 is dirty or scratched, the time and cost of factory maintenance can be saved by disassembling the protection glass seat 1.

[0040] Further, in order to improve the connection reliability of the protective glass seat 1 and the lens barrel 3, in an embodiment of the present application, the second section 12 of the protective glass seat 1 is provided with an internal thread 121 for threaded connection with the rear end of the lens barrel 3, so that the protective glass 2 can be reliably and quickly replaced by threaded connection of the protective glass seat 1 and the lens barrel 3. In addition, the connection of the external thread of the protective glass seat 1 with the internal thread 121 of the rear end of the lens barrel 3 can reduce the problem of dust falling into the lens barrel 3 during the screwing process. It should be noted that for use scenarios that require more convenient disassembly, the threaded connection can also be replaced by a buckle connection or a magnetic attraction type connection, which is not limited by the present application.

[0041] It can be understood that, since the protective glass seat 1 and the lens barrel 3 are detachably connected, and the imaging assembly 4 in the protective glass 2 and the lens barrel 3 is very sensitive to dust, particles and other contaminants, if the sealing performance is not good, these contaminants will adhere to the optical surface, affecting the imaging quality, resulting in image blur or speckle. Therefore, in an embodiment of the present application, a sealing groove 32 is recessed in the peripheral side surface of the rear end of the lens barrel 3, and an O-ring is arranged in the sealing groove 32 to seal and cooperate with the protective glass seat 1. Specifically, the depth and width of the sealing groove 32 should match the O-ring to ensure that the O-ring can be properly compressed after installation, so as to be interference fit in the sealing groove 32 and provide good sealing effect. In addition, when the protective glass seat 1 is threaded connected with the lens barrel 3, it can be understood that the sealing performance of the threaded connection is generally insufficient to meet the strict sealing requirements. Similarly, a sealing groove 32 can be recessed at the external thread of the rear end of the lens barrel 3, and an O-ring can be arranged in the sealing groove 32 to improve the sealing performance.

[0042] On the other hand, it should be noted that the protective glass 2 is not damaged or dirty and needs to be replaced frequently, and the protective glass 2 generally does not bear external force, so the requirement for connection strength is not high. In an embodiment of the present application, the protective glass 2 is adhesively fixed with the protective glass seat 1, which meets certain fixing requirements and is convenient to disassemble when replacement is needed. Specifically, the adhesive method can be point gluing.

[0043] In addition, since there will inevitably be some errors in the manufacture of threads, resulting in loose connection and lens barrel 3 shaking, which in turn affects the imaging quality, therefore, in an embodiment of the present application, when the lens barrel 3 and the protective glass seat 1 are threaded connected, point gluing can also be performed at the threaded connection position, so as to provide certain sealing performance and strengthen the connection reliability.

[0044] In an embodiment of the utility model, the imaging assembly 4 includes first lens 41, spacer ring 42 and second lens 43 which are sequentially arranged along the front-back direction, wherein the spacer ring 42 is annularly arranged and abuts against the first lens 41 and the second lens 43 respectively. By arranging the annular spacer ring 42, the spacing between the adjacent two lenses is controlled without affecting the propagation of light, thereby meeting the imaging requirement. It can be understood that the height of the spacer ring 42 along the front-back direction is not limited in the utility model, and can be changed according to the actual imaging requirement. In addition, the specific number, focal power and surface shape of the lenses in the imaging assembly 4 are not limited in the utility model, and the imaging assembly 4 can be provided with a combination of multiple spherical lenses and aspherical surfaces, and the spacer ring 42 is arranged between every two adjacent lenses, which can be changed according to the actual imaging requirement.

[0045] In order to better fix the imaging assembly 4, in an embodiment of the utility model, the inner side of the lens barrel 3 is stepped at the front end to form a rear-facing abutting surface 31, and at least a part of the front end of the imaging assembly 4 abuts against the abutting surface 31. The lens 100 behind the protective glass 2 further comprises a pressing ring 5, which is arranged in the lens barrel 3 and located at the rear end of the lens barrel 3, and the front end surface of the pressing ring 5 abuts against the rear end of the imaging assembly 4 to press the imaging assembly 4 on the lens barrel 3. By arranging the abutting surface and the pressing ring 5, the imaging assembly 4 is pressed at the front and rear ends to prevent the imaging assembly 4 from shaking and affecting the imaging effect.

[0046] In an embodiment of the utility model, a stepped surface facing forward is formed at the connection between the first section 11 and the second section 12. The lens 100 behind the protective glass 2 further comprises a sealing ring 6 which is annularly arranged and fixed to the stepped surface to abut against the rear end surface of the lens barrel 3. Specifically, the material of the sealing gasket is silicone rubber, which is cheap and easy to purchase, and can better prevent water vapor, dust and the like generated in the application environment from entering the lens barrel 3, thereby improving the sealing effect.

[0047] It should be noted that the diaphragm 7 refers to a device used to limit the diameter of a light beam or to define the imaging area in an optical system. It is usually composed of an opaque plate with a central hole, and the size of the hole can be fixed or adjustable. The main function of the diaphragm 7 is to control the amount of light entering the optical system, thereby affecting the imaging effect.

[0048] In an embodiment of the utility model, the lens 100 behind the protection glass 2 still includes diaphragm 7, diaphragm 7 is fixedly connected to the rear end surface of protection glass seat 1, after setting up diaphragm 7 on the rear end surface of protection glass seat 1 according to different needs, and by changing the window size of diaphragm 7, the field size of system imaging is changed.

[0049] Further, in an embodiment of the utility model, diaphragm 7 is connected with protection glass seat 1 through bolt 8, specifically, the specific number and model of bolt 8 are not limited in the utility model, in the embodiment, 4*M3x6 three group bolt connections are used, and the bolt 8 is arranged at equal intervals around diaphragm 7, so that diaphragm 7 is stably fixed on the rear end surface of protection glass seat 1.

[0050] In an embodiment of the utility model, when assembling, the following steps are sequentially assembled:

[0051] First, the lens barrel 3 is rotated 180 ° and placed vertically, the first lens 41, the spacer ring 42 and the second lens 43 are sequentially assembled into the lens barrel 3 in order, and after adjustment, the pressure ring 5 is locked and fixed at the rear end of the lens barrel 3.

[0052] Then, the protection glass 2 is placed into the vertically placed protection glass seat 1 and fixed by glue, the protection glass seat 1 is rotated 180 °, the diaphragm 7 is placed on the protection glass seat 1, and the diaphragm 7 is fastened by bolt connection.

[0053] The assembled protection glass seat 1 is placed into the lens barrel 3, the protection glass seat 1 is glued at the threaded part, and the lens barrel 3 is screwed and connected by threaded connection, and the protection glass seat 1 is tightly fixed.

[0054] During terminal assembly, the front end of the lens barrel 3 is locked and connected with the terminal marble platform through a screw, and if the protection glass 2 is dirty or scratched during use, the protection glass seat 1 can be directly disassembled for wiping or replacing the protection glass 2.

[0055] The utility model also provides a kind of camera, and the camera includes the lens behind the protection glass, and the specific structure of the lens behind the protection glass refers to the above embodiment, since the lens behind the protection glass adopts all technical solutions of the above all embodiments, at least has all beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0056] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A lens with a glass rear protection, characterized in that, The lens with the rear-located protective glass comprises: a protective glass seat arranged in a ring shape, an inner side of the protective glass seat is arranged in steps to form a first section and a second section with gradually increased inner diameters from front to back; a protective glass arranged in the inner hole of the protective glass seat and corresponding to the first section; a lens barrel located at the front side of the protective glass and detachably connected to the second section along the front-back direction; and an imaging assembly arranged in the lens barrel.

2. The lens with a protective glass rear as claimed in claim 1, wherein The second section of the protective glass seat is provided with an inner thread for threadedly connecting the rear end of the lens barrel.

3. The lens with a protective glass rear as claimed in claim 1, wherein The rear end of the lens barrel is concavely provided with a sealing groove, and an O-ring is arranged in the sealing groove to sealingly cooperate with the protective glass seat.

4. The lens with a protective glass rear as claimed in claim 1, wherein The protective glass is adhesively fixed to the protective glass seat; and / or The lens barrel and the protective glass seat are threadedly connected and adhesively cooperated.

5. The lens with a protective glass rear as claimed in claim 1, wherein The imaging assembly comprises a first lens, a spacer ring and a second lens arranged in sequence along the front-back direction; The spacer ring is arranged in a ring shape and abuts against the first lens and the second lens respectively.

6. The lens according to claim 1, wherein The inner side of the lens barrel is arranged in steps at the front end to form an abutting surface arranged towards the back, and at least a part of the front end of the imaging assembly abuts against the abutting surface; The lens with the rear-located protective glass further comprises a pressing ring arranged in the lens barrel and located at the rear end of the lens barrel, and the front end surface of the pressing ring abuts against the rear end of the imaging assembly to press the imaging assembly on the lens barrel.

7. The lens with a protective glass rear as claimed in claim 1, wherein The connection between the first section and the second section is formed with a step surface arranged towards the front; The lens with the rear-located protective glass further comprises: a sealing ring arranged in a ring shape, the sealing ring is fixed to the step surface to abut against the rear end surface of the lens barrel.

8. The lens with a protective glass rear as claimed in claim 1, wherein The lens with the rear-located protective glass further comprises a diaphragm fixedly connected to the rear end surface of the protective glass seat.

9. The lens according to claim 8, wherein The diaphragm and the protective glass seat are connected by bolts.

10. A video camera characterized by comprising: The lens with the rear-located protective glass comprises: The lens with the rear-located protective glass comprises:

Images