CN104880806B - Optical lens and electronic device using same - Google Patents

Abstract

The invention provides an optical lens and an electronic device using the same, comprising: the lens barrel at least comprises two parts with different inner diameters, and step-shaped step difference layers are arranged between the inner walls of the lens barrels of the different parts; the lens comprises an optical part and a non-optical part, wherein the segment difference layer is positioned between two adjacent lenses, the two adjacent lenses are respectively positioned on different parts of the lens barrel, and the outer diameters of the lenses are matched with the inner diameter of the lens barrel of the part. Because the level difference layer is positioned between the two adjacent lenses, the level difference layer can bear the pressure of the lens loaded into the lens barrel subsequently to the lens loaded into the lens barrel, and the problem of poor imaging quality caused by the compression and deformation of the lens can be avoided.

Description

Optical lens and electronic equipment using the optical lens

technical field

The invention relates to the technical field of imaging equipment, and more specifically, to an optical lens and electronic equipment using the optical lens.

Background technique

At present, electronic devices such as smart phones and digital cameras have become the main tools for people to take pictures. With the upgrading of electronic products, people have higher and higher requirements for the imaging quality of electronic products.

Existing optical lenses are all stacked structures that use a lens barrel as a carrier to carry various optical components, wherein the optical components include one or more lenses. However, when the lenses are sequentially loaded into the lens barrel from the object side to the image side, the subsequent loaded lenses will exert pressure on the lenses already loaded in the lens barrel towards the object side, which will cause the lenses in the lens barrel to be deformed under pressure. , which in turn leads to poor imaging quality of the optical lens, which cannot meet people's requirements for shooting high-quality images.

Contents of the invention

In view of this, the present invention provides an optical lens and electronic equipment using the optical lens to solve the problem in the prior art that the imaging quality of the optical lens is affected by the compression deformation of the lens in the lens barrel.

To achieve the above object, the present invention provides the following technical solutions:

An optical lens comprising:

A lens barrel, the lens barrel includes at least two parts with different inner diameters, and there is a step-shaped step difference layer between the inner walls of the lens barrel in different parts;

At least two lenses arranged in the lens barrel, the lenses include an optical part and a non-optical part;

Wherein, the step difference layer is located between two adjacent lenses, and the two adjacent lenses are respectively located in different parts of the lens barrel, and the outer diameter of the lens matches the inner diameter of the part of the lens barrel .

Preferably, the lens barrel includes a first part and a second part, the inner diameter of the first part is smaller than the inner diameter of the second part, and there is a step layer between the inner walls of the lens barrel of the first part and the second part ;

The at least two lenses include a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged in the lens barrel from the object side to the image side, and the first lens and the second lens are located in the The first part of the lens barrel, the third lens and the fourth lens are located in the second part of the lens barrel, the outer diameter of the first lens and the second lens is smaller than the outer diameter of the third lens and the fourth lens , and the level difference layer is located between the second lens and the third lens.

Preferably, the first lens, the second lens, the third lens and the fourth lens satisfy the following relational formula:

A ₁ :A ₂ =B ₁ :B ₂ =1:1.05;

A ₂ : B ₁ =1:1.2;

The _A1 refers to the outer diameter of the first lens;

The _A2 refers to the outer diameter of the second lens;

The _B1 refers to the outer diameter of the third lens;

The _B2 refers to the outer diameter of the fourth lens.

Preferably, the first lens, the second lens, the third lens, the fourth lens are all interference fits with the lens barrel, and the first lens, the second lens, the third lens, the fourth lens The following relationship is satisfied between the lens and the lens barrel:

0≤T ₁ ≤0.01mm; 0≤T ₂ ≤0.01mm; 0≤T ₃ ≤0.01mm; 0≤T ₄ ≤0.01mm;

The _T1 refers to the difference between the outer diameter of the first lens and the inner diameter of the first lens gear of the lens barrel;

The _T2 refers to the difference between the outer diameter of the second lens and the inner diameter of the second lens gear of the lens barrel;

The _T3 refers to the difference between the outer diameter of the third lens and the third lens gear inner diameter of the lens barrel;

The _T4 refers to the difference between the outer diameter of the fourth lens and the inner diameter of the fourth lens gear of the lens barrel.

Preferably, there is an annular light-shielding sheet between two adjacent lenses;

The outer diameter of the shading sheet is equal to the outer diameter of the lens near the image side among the two adjacent lenses.

Preferably, the shading sheet between the first lens and the second lens is a first shading sheet, and the outer diameter of the first shading sheet is equal to the outer diameter of the second lens;

The shading sheet between the second lens and the third lens is a second shading sheet, and the outer diameter of the second shading sheet is equal to the outer diameter of the third lens;

The shading sheet between the third lens and the fourth lens is a third shading sheet, and the outer diameter of the third shading sheet is equal to the outer diameter of the fourth lens.

Preferably, the lens barrel is made of polycarbonate; the light shield is made of KIMOTO.

Preferably, there is an annular stopper between the fourth lens and the bottom surface of the lens barrel;

The stopper is in clearance fit with the lens barrel, and satisfies the following relationship:

_{0.01mm≤Τ5≤0.03mm} ;

The _T5 refers to the difference between the outer diameter of the stopper and the inner diameter of the stopper gear of the lens barrel.

Preferably, the non-optical parts of the lens are all subjected to fogging treatment; the optical parts of the lens are all provided with anti-reflection coatings.

An electronic device, comprising the optical lens according to any one of the above items.

Compared with the prior art, the technical solution provided by the present invention has the following advantages:

In the optical lens provided by the present invention and the electronic equipment using the optical lens, the lens barrel at least includes two parts with different inner diameters, and there is a step-shaped step layer between the inner walls of the lens barrel of different parts. Between each lens, therefore, the level difference layer can withstand the pressure of the lens loaded into the lens barrel subsequently on the lens already loaded into the lens barrel, so that the problem of poor imaging quality caused by the deformation of the lens under pressure can be avoided.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic structural view of an optical lens provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a lens provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

One embodiment of the present invention provides an optical lens, comprising:

A lens barrel, the lens barrel includes at least two parts with different inner diameters, and there is a step-shaped step difference layer between the inner walls of the lens barrel in different parts;

At least two lenses arranged in the lens barrel, the lenses include an optical part and a non-optical part, wherein the step difference layer is located between two adjacent lenses, and the two adjacent lenses are respectively located different parts of the lens barrel, and the outer diameter of the lens matches the inner diameter of the part of the lens barrel.

In the optical lens provided by this embodiment, since the inner wall of different parts of the lens barrel has a step-shaped step layer, since the step difference layer is located between two adjacent lenses, the step difference layer can withstand the subsequent loading into the lens barrel. The pressure of the lens on the lens that has been loaded into the lens barrel can avoid the problem of poor imaging quality caused by the deformation of the lens under pressure.

The optical lens provided by the present invention will be described below by taking a lens barrel including a first part and a second part with different inner diameters and four lenses located in the lens barrel as an example. Of course, the present invention is not limited thereto. In other embodiments The lens barrel can be divided into three parts or even four parts with different inner diameters, and the number of lenses in the lens barrel can also be two, three or five.

Referring to FIG. 1 , the optical lens includes a lens barrel 9 , and the lens barrel 9 is an integrally formed semi-closed barrel. The lens barrel 9 at least includes a first part 10 and a second part 20, wherein the inner diameter of the first part 10 is smaller than the inner diameter of the second part 20, and there is a step-like level difference layer between the inner walls of the lens barrel of the first part 10 and the second part 20 30. Since the inner diameter of the first part 10 is small, the wall of the lens barrel of the first part 10 can be set thicker, thereby improving the accuracy of forming the material of the lens barrel, and effectively controlling the optical part of the loaded lens on the optical axis AA. superior.

The lenses located in the lens barrel 9 include a first lens 1, a second lens 2, a third lens 3 and a fourth lens 4 arranged sequentially from the object side to the image side or from left to right, wherein the first lens 1, the second lens The second lens 2, the third lens 3 and the fourth lens 4 all include an optical part and a non-optical part. And, the first lens 1 and the second lens 2 are located at the first part 10 of the lens barrel 9, the outer diameters of the first lens 1 and the second lens 2 match the inner diameter of the first part 10, the third lens 3 and the fourth lens 4 Located in the second part 20 of the lens barrel 9, the outer diameters of the third lens 3 and the fourth lens 4 match the inner diameter of the second part 20, so as to fix the lenses by friction between the lens barrel 9 and the lens, and in addition , the outer diameter of the third lens 3 is greater than the outer diameter of the first lens 1 and the second lens 2, the outer diameter of the fourth lens 4 is greater than the outer diameter of the first lens 1 and the second lens 2, and the level difference layer 30 is located in the second Between lens 2 and third lens 3.

Referring to FIG. 2, the first lens 1, the second lens 2, the third lens 3 and the fourth lens 4 satisfy the following relationship:

A ₁ :A ₂ =B ₁ :B ₂ =1:1.05;

A ₂ : B ₁ =1:1.2;

Wherein, _A1 refers to the outer diameter of the first lens 1; _A2 refers to the outer diameter of the second lens 2;

B ₁ refers to the outer diameter of the third lens 3 ; B ₂ refers to the outer diameter of the fourth lens 4 .

With reference to Fig. 1, the parts with different inner diameters (such as the first part 10 and the second part 20) are arranged in order according to the size of the inner diameter, the part with the smallest inner diameter is close to the object side of the optical lens, the part with the largest inner diameter is close to the image side of the optical lens, and , when loading the lens in the lens barrel 9, first load the lens of the smaller part of the inner diameter, and then load the lens of the larger part of the inner diameter.

Since the outer diameter of the third lens 3, which is the lens to be loaded later, is greater than the outer diameter of the second lens 2, which is the lens loaded earlier, when the third lens 3 is loaded in the lens barrel 9, the pressure bearing surface Located on the level difference layer 30, that is to say, the level difference layer 30 will bear the pressure to the direction of the second lens 2, that is, the direction of the object side when the third lens 3 is loaded, thereby avoiding the impact on imaging due to the pressure deformation of the second lens 2 quality problem.

In the present embodiment, the material of lens barrel 9 is black PC (Polycarbonate, polycarbonate), because PC has good toughness, therefore, is more conducive to improving the cooperation of lens barrel 9 internal diameter gear, and the cost of PC is also lower , can reduce the cost of the optical lens. The material of the first lens 1 , the second lens 2 , the third lens 3 and the fourth lens 4 may be optical plastic or optical glass, which is not limited in the present invention.

In this embodiment, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4 and the lens barrel 9 are all interference fits. Further, the first lens 1, the second lens 2, the second lens The three lenses 3, the fourth lens 4 and the lens barrel 9 satisfy the following relationship:

0≤T ₁ ≤0.01mm; 0≤T ₂ ≤0.01mm;

0≤Τ ₃ ≤0.01mm; 0≤Τ ₄ ≤0.01mm;

Wherein, _T1 refers to the difference between the outer diameter of the first lens 1 and the first lens gear inner diameter of the lens barrel 9;

T ₂ refers to the difference between the outer diameter of the second lens 2 and the second lens gear inner diameter of the lens barrel 9;

T ₃ refers to the difference between the outer diameter of the third lens 3 and the third lens gear inner diameter of the lens barrel 9;

_T4 refers to the difference between the outer diameter of the fourth lens 4 and the inner diameter of the fourth lens gear of the lens barrel 9.

Referring to Fig. 1, in the optical lens provided by the present embodiment, there is an annular shading sheet between two adjacent lenses; the outer diameter of the shading sheet is equal to the outer diameter of the lens near the image side in the two adjacent lenses. In order to effectively reduce the multiple reflections or refractions of light passing through the lens, and finally reduce the reflected light streaks on the imaging element.

Specifically, the light-shielding sheet between the first lens 1 and the second lens 2 is the first light-shielding sheet 5, and the outer diameter of the first light-shielding sheet 5 is equal to the outer diameter of the second lens 2, so as to effectively absorb light from the first lens 1 stray light refracted at

The light-shielding sheet between the second lens 2 and the third lens 3 is a second light-shielding sheet 6, and the outer diameter of the second light-shielding sheet 6 is equal to the outer diameter of the third lens 3, so as to effectively absorb light refracted from the second lens 2. stray light;

The light-shielding sheet between the third lens 3 and the fourth lens 4 is the third light-shielding sheet 7, and the outer diameter of the third light-shielding sheet 7 is equal to the outer diameter of the fourth lens 4, so as to effectively absorb the light refracted from the third lens 3. of stray light.

Furthermore, the material of the light-shielding sheet is preferably KIMOTO, because this material has good light-shielding and light-absorbing properties, so using the light-shielding sheet can effectively improve the problem of stray light. And, in order to further reduce stray light, the non-optical parts of the lenses in the lens barrel 9 can be fogged, that is, the non-optical parts of the first lens 1, the second lens 2, the third lens 3 and the fourth lens 4 are all After atomization treatment.

In addition, there is a black ring-like stopper 8 between the fourth lens 4 and the bottom surface of the lens barrel 9 , and the stopper 8 functions to fix the fourth lens 4 and the lens barrel 9 . Moreover, in the extending direction of the optical center line AA of the optical lens, the projection of the stopper 8 overlaps with the projection of the non-optical part of the fourth lens 4, so as to prevent the stopper 8 from affecting the light transmittance of the optical part of the lens.

Wherein, the gap fit between the stopper 8 and the lens barrel 9 satisfies the following relationship:

_{0.01mm≤Τ5≤0.03mm} ;

Said _T5 refers to the difference between the outer diameter of the stopper 8 and the inner diameter of the stopper gear of the lens barrel 9.

In addition, anti-reflection coatings can also be coated on the optical part of the lens, that is, both sides of the optical parts of the first lens 1, the second lens 2, the third lens 3 and the fourth lens 4 are coated with anti-reflection coatings, and the anti-reflection coatings The material may include Ti ₃ O ₅ and SiO ₂ , the anti-reflection coating includes at least four layers, and the Ti ₃ O ₅ film layers and SiO ₂ film layers are arranged alternately, for example, when the anti-reflection film includes four film layers, the first layer It can be a Ti ₃ O ₅ film layer, the second layer can be a SiO ₂ film layer, the third layer can be a Ti ₃ O ₅ film layer, and the fourth layer can be a SiO ₂ film layer. The specification requirements of the anti-reflection coating are: under the irradiation of light with a wavelength band of 410nm to 460nm, the reflectance R of the anti-reflection coating is ≤ 0.5%; ≤0.8%; the color should be green or close to green.

In the optical lens provided by this embodiment, the lens barrel at least includes two parts with different inner diameters, and there is a step-shaped step layer between the inner walls of the lens barrel of different parts. Since the step layer is located between two adjacent lenses, the step difference The layer can withstand the pressure of the lens loaded into the lens barrel subsequently on the lens already loaded into the lens barrel, so that the problem of poor imaging quality caused by the deformation of the lens under pressure can be avoided.

It can be understood that, for the optical lens disclosed in the above embodiments, another embodiment of the present invention also discloses an electronic device using the optical lens, and the electronic device may include the optical lens disclosed in any one of the above embodiments of the present application. optical lens. Specifically, the present application also discloses a photographic device using the optical lens, and the photographic device may specifically be an electronic device capable of video or image collection, such as a mobile phone and a notebook computer.

In the optical lens of the electronic device provided in this embodiment, the lens barrel includes at least two parts with different inner diameters, and there is a step-shaped step difference layer between the inner walls of the lens barrel of different parts. Since the step difference layer is located between two adjacent lenses Therefore, the level difference layer can bear the pressure of the lens loaded into the lens barrel subsequently on the lens already loaded into the lens barrel, so that the problem of poor imaging quality caused by the deformation of the lens under pressure can be avoided.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of optical lens, which is characterized in that including：

Lens barrel, the lens barrel include at least two different parts of internal diameter, have between the inner wall of the lens barrel of different piece Step-like segment difference layer；

At least two lens being set in the lens barrel, the lens include opticator and non-optic portion, it is described at least The non-optic portion of two lens connects, and constitutes stacked structure；

Wherein, the segment difference layer is located between two lens that are adjacent and connecting, and two adjacent lens are located at The non-optic portion image side of the different piece of the lens barrel, lens barrel first part lens bears against face and the segment difference layer is neat It is flat, and the outer diameter of the lens and the internal diameter of affiliated part lens barrel match；

The lens barrel includes first part and second part, and the internal diameter of the first part is less than the internal diameter of the second part, And there is segment difference layer between the first part and the lens barrel inner wall of second part；

At least two lens include the first lens being set in turn in from the object side to image side in the lens barrel, the second lens, The third lens and the 4th lens, first lens and the second lens are located at the first part of the lens barrel, the third lens It is located at the second part of the lens barrel with the 4th lens, the outer diameter of first lens and the second lens is less than the third lens With the outer diameter of the 4th lens, and the segment difference layer is between second lens and the third lens.

2. optical lens according to claim 1, which is characterized in that first lens, the second lens, the third lens and 4th lens meet following relational expression：

A₁：A₂=B₁：B₂=1：1.05；

A₂：B₁=1：1.2；

The A₁It refer to the outer diameter of first lens；

The A₂It refer to the outer diameter of second lens；

The B₁It refer to the outer diameter of the third lens；

The B₂It refer to the outer diameter of the 4th lens.

3. optical lens according to claim 1, which is characterized in that first lens, the second lens, the third lens, It is interference fit, and first lens, the second lens, the third lens, the 4th lens between 4th lens and the lens barrel Meet following relational expression between the lens barrel：

0≤Τ₁≤0.01mm；0≤Τ₂≤0.01mm；0≤Τ₃≤0.01mm；0≤Τ₄≤0.01mm；

The Τ₁It refer to the difference of the outer diameter and the first lens gear internal diameter of the lens barrel of first lens；

The Τ₂It refer to the difference of the outer diameter and the second lens gear internal diameter of the lens barrel of second lens；

The Τ₃It refer to the difference of the outer diameter and the third lens gear internal diameter of the lens barrel of the third lens；

The Τ₄It refer to the difference of the outer diameter and the 4th lens gear internal diameter of the lens barrel of the 4th lens.

4. optical lens according to claim 1, which is characterized in that have annular shape between two adjacent lens Anti-dazzling screen；

The outer diameter of the anti-dazzling screen is equal to the outer diameter of the lens close to image side in two adjacent lens.

5. optical lens according to claim 4, which is characterized in that between first lens and second lens Anti-dazzling screen is the first anti-dazzling screen, and the outer diameter of first anti-dazzling screen is equal to the outer diameter of second lens；

Anti-dazzling screen between second lens and the third lens is the second anti-dazzling screen, the outer diameter etc. of second anti-dazzling screen In the outer diameter of the third lens；

Anti-dazzling screen between the third lens and the 4th lens is third anti-dazzling screen, the outer diameter etc. of the third anti-dazzling screen In the outer diameter of the 4th lens.

6. optical lens according to claim 5, which is characterized in that the material of the lens barrel is makrolon；The screening The material of mating plate is KIMOTO.

7. optical lens according to claim 1, which is characterized in that between the 4th lens and the bottom surface of the lens barrel Stop member with class annular shape；

The stop part and the lens barrel clearance fit, and meet following relational expression：

0.01mm≤Τ₅≤0.03mm；

The Τ₅It refer to the difference of the outer diameter and the stop part gear internal diameter of the lens barrel of the stop part.

8. optical lens according to claim 1, which is characterized in that the non-optic portion of the lens is passed through at atomization Reason；The opticator of the lens all has anti-reflection film.

9. a kind of electronic equipment, which is characterized in that including claim 1-8 any one of them optical lens.