Lenses and Electronic Devices

Abstract

To provide a lens and an electronic apparatus that can solve the issue of an existing lens that the structure of adjusting both optical axes through a light shielding film can degrade the resolution performance of a lens unit.SOLUTION: An embodiment of the present invention relates to a lens and an electronic apparatus related to a technical field of an imaging apparatus. The lens includes a first lens-barrel and a second lens-barrel sequentially arranged in a direction from an object ot an image. One first lens is provided in the first lens-barrel, and a plurality of second lenses and a pressing ring are sequentially provided in a direction from an object to an image in the second lens-barrel. When the first lens-barrel and the second lens-barrels are assembled, the first lens is in contact with the closest second lens to an object of the second lenses.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of photographic equipment, and in particular to lenses and electronic devices. [Background technology]

[0002] In conventional lenses, the alignment structure of the lens unit is specifically a structure in which a light-shielding film is provided between adjacent lenses, and the optical axes of both lenses are adjusted via the light-shielding film. Since the precision of the thickness of the light-shielding film and the flatness of both sides are prone to variation, this affects the adjustment of the optical axis and deteriorates the resolution performance of the lens unit. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present invention is to provide a lens and electronic device that can solve the problem that the structure in conventional lenses in which both optical axes are adjusted via a light-shielding film degrades the resolution performance of the lens unit. [Means for solving the problem]

[0004] As a first aspect of the present invention, there is provided a lens. The lens includes a first lens barrel and a second lens barrel arranged in order from the object side to the image side. A first lens is provided in the first lens barrel, and a plurality of second lenses and a pressing ring are provided in the second lens barrel in order from the object side to the image side. When the first lens barrel and the second lens barrel are assembled, the first lens abuts against a target second lens that is the closest to the object among the plurality of second lenses.

[0005] In a second aspect, an embodiment of the present invention provides an electronic device including the lens according to the first aspect. Effect of the Invention

[0006] In an embodiment of the present invention, when the first and second barrels are assembled, the first lens abuts against a target second lens among the multiple second lenses that is closest to the object, and the optical axis is adjusted by the lenses abutting against each other, thereby preventing the thickness of the light-shielding film and the flatness of both sides from affecting accuracy, and improving the resolution performance of the lens. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram of a lens according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a second schematic diagram of a lens according to an embodiment of the present invention. [Diagram 3] FIG. 3 is an exploded view of a lens according to an embodiment of the present invention. [Figure 4] FIG. 4 is a diagram showing the wearing of a lens according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is clear that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without creative labor all belong to the protection scope of the present invention.

[0009] The terms "first", "second", etc. in the present specification and claims are not used to describe a particular order or sequence, but are used to distinguish between similar objects. It is understood that the data used in this manner may be interchanged where appropriate so that embodiments of the present invention may be practiced in other sequences than those shown or described herein, and that the objects distinguished by "first", "second", etc. are generally similar, and the number of objects is not limited, e.g., the first object may be one or more. Also, "and / or" in the specification and claims indicates at least one of the objects connected, and " / " generally indicates an "or" relationship between the related objects before and after.

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a lens according to an embodiment of the present invention will be described in detail through specific embodiments and application scenarios with reference to the accompanying drawings.

[0011] As shown in Figures 1 to 4, a lens according to an embodiment of the present invention includes a first lens barrel 1 and a second lens barrel 2 arranged in order from the object side to the image side, with one first lens 11 provided within the first lens barrel 1, and multiple second lenses 21 provided within the second lens barrel 2 in order from the object side to the image side, as well as a retaining ring 22 for mounting and positioning all of the second lenses 21 within the second lens barrel 2.

[0012] Note that the drawings show an example scenario in which five second lenses 21 are provided in the second lens barrel 2, but in an actual application scenario, the number of second lenses 21 can be flexibly adjusted according to actual needs.

[0013] When the first barrel 1 and the second barrel 2 are assembled, the first lens 11 abuts against a target second lens among the plurality of second lenses 21 that is closest to the object side.

[0014] In an embodiment of the present invention, when the first and second barrels are assembled, the first lens abuts against a target second lens among the multiple second lenses that is closest to the object, and the optical axis is adjusted by the lenses abutting against each other, thereby preventing the thickness of the light-shielding film and the flatness of both sides from affecting accuracy, and improving the resolution performance of the lens.

[0015] As a specific method for mounting the first lens 11 in the first barrel 1 , the first lens 11 is press-fitted into the first barrel 1 and fixed in the first barrel 1 by adhesive 3 .

[0016] The fixing between the first lens barrel 1 and the second lens barrel 2 can also be achieved by using the adhesive 3 .

[0017] In a possible embodiment, as shown in FIG. 1, the first lens 11 is provided with a first edge portion 110, and the target second lens is provided with a second edge portion 210, with the first edge portion 110 abutting against the second edge portion 210.

[0018] That is, in an embodiment of the present invention, edge portions are provided on the first lens and the target second lens, and the abutment between the edge portions is achieved between the first lens and the target second lens, and further, the position of the optical axis in the Z direction (the vertical direction in the figure) is determined by the first lens and the target second lens.

[0019] In a possible embodiment, the first lens 11 is further provided with an annular protrusion structure 111 centered on the optical axis of the first lens 11 and with a protrusion direction facing the target second lens, and a light-shielding film 4 is provided between the protrusion structure 111 and the target second lens.

[0020] In the embodiment of the present invention, when the edge of the first lens and the target second lens contact to determine the Z-direction position of the optical axis, the protrusion structure on the first lens presses the light-shielding film against the target second lens, realizing the attachment of the light-shielding film between the first lens and the second lens. In a practical application scenario, the thickness of the light-shielding film is smaller than the distance between the first lens and the target second lens. Therefore, there is a clearance between the first lens and the light-shielding film.

[0021] In a possible embodiment, a light-shielding film is provided between both the second lenses 21 and the pressing ring 22.

[0022] By providing a light-shielding film, it is possible to block unnecessary light and suppress the occurrence of ghosts and flares.

[0023] In a possible embodiment, the second barrel 2 further includes an intermediate ring 23 located between two adjacent second lenses 21 .

[0024] In the embodiment of the present invention, the intermediate ring has a function of determining the distance in the Z direction between the optical axes of two adjacent second lenses.

[0025] In a possible embodiment, there is a clearance between the first lens barrel 1 and the second lens barrel 2, as shown in FIG.

[0026] In the embodiment of the present invention, when the first and second barrels are attached and the first lens abuts against the target second lens, a certain clearance exists between the first and second barrels. That is, the first and second barrels are loosely fitted. This clearance can be an adjustment space between the first and second barrels. In this way, after the first lens abuts against the target second lens to determine the position of the optical axis in the Z direction, the first barrel and the first lens are adjusted in the XY direction (horizontal direction in the figure) by a centering jig within the range of this clearance. When the adjustment is made to the position where the peak output from the evaluator is maximized, adhesive is poured in from the clearance between the first and second barrels to fix them, and the assembly of the lens is completed.

[0027] In a possible embodiment, the clearance distance is between 0.02 mm and 0.05 mm.

[0028] In a possible embodiment, the protrusion taper angle of the protrusion structure 111 is between 30 degrees and 45 degrees. Specifically, the angle α shown in FIG. 2 is this protrusion taper angle.

[0029] In a possible embodiment, the height of the protruding structure 111 is 0.08 mm to 0.12 mm. Specifically, the height h shown in FIG.

[0030] Further, reference is made to Figures 3 and 4. Figure 3 is an exploded view of each component of the lens according to the embodiment of the present invention. In actual mounting, the first lens barrel 1 and the first lens 11 are assembled together to form the front group 41, and the second lens barrel 2, the multiple second lenses 21, the pressing ring 22 and the intermediate ring 23 are assembled together to form the rear group 42.

[0031] FIG. 3 is an exploded view of a lens according to an embodiment of the present invention. FIG. 4 is a schematic diagram of a lens according to an embodiment of the present invention mounted in a front group 41 and a rear group 42. The front group 41 and the rear group 42 will be described with reference to FIG. 3 and FIG. 4. The front group 41 is formed by pressing the first lens into the first barrel 1 and fixing the first lens 11 by injecting adhesive between the first barrel 1 and the first lens 11. The rear group 42 is formed by incorporating a plurality of second lenses 21, a pressing ring 22, and an intermediate ring 23 into the second barrel 2 and fixing the second lens 2 and the pressing ring 22 by injecting adhesive between the second barrel 2 and the pressing ring 22. In this way, the front group lens including the first barrel 1 and the rear group lens including the second barrel 2 are completed.

[0032] The light-shielding film 4 is placed on the rear group 42. Then, the front group 41 is placed on the rear group 42. By loosely fitting the first barrel 1 and the second barrel 2, the optical axes of the front group lens housed in the first barrel 1 and the rear group lens housed in the second barrel 2 can be aligned to some extent. By directly butting the first lens 11 and the second lens 21 (specifically the target second lens), the structure is one that eliminates variations due to the thickness and flatness accuracy of the light-shielding film. The first barrel 1 and the first lens 11 of the front group can be adjusted in the XY direction by a centering jig or the like. Then, the front group 41 is moved horizontally to adjust it to a position where the peak output from the evaluator is maximized. After centering in this way, adhesive is poured into the gap between the front group 41 and the rear group 42 to fix them, and the imaging lens is completed.

[0033] An embodiment of the present invention provides an electronic device including the lens described above.

[0034] The electronic device in the embodiment of the present invention may be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device may be a mobile phone, a tablet, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and the non-mobile electronic device may be a server, a network attached memory (NAS), a personal computer (PC), a television (TV), an ATM, or a self-service machine, and is not limited to the embodiment of the present invention.

[0035] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the specific embodiments. The specific embodiments are merely illustrative and not limiting. Those skilled in the art can take inspiration from the present invention and make many forms that fall within the scope of protection of the present application without departing from the spirit of the present invention and the scope of the claims.

Claims

1. The optical system includes a first lens barrel and a second lens barrel arranged in order from the object side to the image side, a first lens is provided in the first lens barrel, and a plurality of second lenses and a press ring are provided in the second lens barrel in this order from the object side to the image side; When the first lens barrel and the second lens barrel are assembled, the first lens abuts against a target second lens that is closest to an object among the plurality of second lenses; a clearance is provided between the first lens barrel and the second lens barrel; the clearance exists in a direction along an optical axis of the first lens after the first lens comes into contact with the target second lens, and is used to adjust the first lens barrel and the first lens in a direction perpendicular to the optical axis of the first lens within a range of the clearance; The first lens has a first edge portion, and the target second lens has a second edge portion. The first edge portion abuts against the second edge portion, The first lens is further provided with an annular protrusion structure having a center on the optical axis of the first lens and a protrusion direction toward the target second lens, A lens, characterized in that a light-shielding film is provided between the protrusion structure and the target second lens.

2. The lens according to claim 1 , wherein a light-shielding film is provided between each of the second lenses and the pressing ring.

3. The lens according to claim 1 , further comprising an intermediate ring disposed within the second barrel and positioned between two adjacent second lenses.

4. The lens of claim 1, wherein the clearance distance is between 0.02 mm and 0.05 mm.

5. 2. The lens according to claim 1, wherein the protrusion structure has a protrusion taper angle of 30 degrees to 45 degrees.

6. The lens according to claim 1, wherein the height of the protrusion structure is 0.08 mm to 0.12 mm.

7. An electronic device comprising the lens according to any one of claims 1 to 6.

Images