CN208780896U - A kind of spurious rays elimination imaging lens - Google Patents
A kind of spurious rays elimination imaging lens Download PDFInfo
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- CN208780896U CN208780896U CN201821644450.4U CN201821644450U CN208780896U CN 208780896 U CN208780896 U CN 208780896U CN 201821644450 U CN201821644450 U CN 201821644450U CN 208780896 U CN208780896 U CN 208780896U
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Abstract
The utility model discloses a kind of spurious rays elimination imaging lens, including lens barrel and lens set, lens group settings are in lens barrel, lens set successively includes the first lens, the second lens, the third lens and the 4th lens from the object side to image side, it is provided with light hole on lens barrel, is equipped with rectangular optically focused tunnel in lens barrel；First lens are the curved month type eyeglass for being convex to object space, are arranged in light hole；Second lens are fan eyeglass, and plane of incidence area is greater than exit facet area, and the plane of incidence of the second lens is the exit facet of the first lens, and the exit facet of the second lens is arc convex；The third lens are fan eyeglass, and plane of incidence area is less than exit facet area, and the plane of incidence of the third lens is corresponding with the exit facet of the second lens, and is connected to by rectangular optically focused tunnel, and the exit facet of the third lens is arc convex；4th lens are the curved month type eyeglass for being convex to image space, and the exit facet of the third lens is the plane of incidence of the 4th lens.For the utility model by that can eliminate spurious rays, imaging effect is good.
Description
Technical field
The utility model relates to optical image technology fields, and in particular to a kind of spurious rays elimination imaging lens.
Background technique
In recent years, the rise of the electronic product with the development of photography technology and with camera function, optical camera mould
Group cup is widely used in various product, for the trend for cooperating current electronic product volume smaller and smaller, lens module
Volume must also develop towards the direction of micromation.
But in traditional lens module, the light hole in lens barrel therein is rounded, therefore, is utilizing the structure
Lens module in imaging, often have a large amount of unwanted light, that is, veiling glare, through the lens barrel light hole into
Enter on the eyeglass to inside lens barrel, the imaging of eyeglass is interfered.
Utility model content
The utility model provides a kind of spurious rays elimination imaging solving the problems, such as unwanted light generation veiling glare
Camera lens.
The technical solution of the utility model is as follows:
A kind of spurious rays elimination imaging lens, including lens barrel and lens set with hollow structure, the lens set is set
It sets in the lens barrel, the lens set successively includes first lens with positive light coke, has positive light from the object side to image side
The second lens, the third lens with positive light coke and the 4th lens with negative power of focal power are arranged on the lens barrel
There is light hole, is equipped with rectangular optically focused tunnel in the lens barrel；
First lens are the curved month type eyeglass for being convex to object space, are arranged in the light hole；
Second lens are fan eyeglass, and the plane of incidence area of second lens is greater than its exit facet area, described
The plane of incidence of second lens is the exit facet of first lens, and the exit facet of second lens is arc convex；
The third lens are fan eyeglass, and the plane of incidence area of the third lens is less than its exit facet area, described
The plane of incidence of the third lens is corresponding with the exit facet of second lens, and by the rectangular optically focused tunnel connection, described
The exit facet of the third lens is arc convex；
4th lens are the curved month type eyeglass for being convex to image space, and the exit facet of the third lens is the 4th lens
The plane of incidence.
Further, the lens barrel includes being provided with the first barrel of the light hole and bending from first barrel
The second barrel extended.
Further, second barrel includes close to the trapezoidal inner sidewall of optical axis and opposite with the trapezoidal inner sidewall
And the lateral wall far from optical axis, second lens and the third lens are separately mounted to the trapezoidal inner sidewall of second barrel
On two sides, the rectangular optically focused tunnel is formed between the top surface of the trapezoidal inner sidewall of second barrel.
Further, the exit facet of the 4th lens is correspondingly arranged on optical filter.
Further, the optical filter is smalt optical filter.
Compared with the existing technology, the utility model has the beneficial effects that:
According to optical Design, the first lens assume responsibility for the larger focal power of entire optical lens system, make axis outer light beam
After preceding group of eyeglass, the angle of light and optical axis is quickly reduced, and passes through rectangular optically focused tunnel between the second lens and the third lens
Road connection, the design in rectangular optically focused tunnel can be to avoid unwanted light, that is to say, that can eliminate stray light, avoid not
Necessary light improves imaging effect, to improve lens performance to eyeglass image contributions generated；
Lens set is made of 4 eyeglasses, and positive negative power combination realizes within the scope of the full filed of optical lens system all
There is excellent resolution ratio, and undistorted, it, can according to the design in the optical Design of 4 eyeglasses and rectangular optically focused tunnel
It effectively improves field angle and can preferably cooperate the incident angle of eyeglass, to reach 94 ° or more of ultra-large vision field angle；
The setting of smalt optical filter, the problems such as ghost formed by infrared external reflection, veiling glare can be reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to Fig. 1, the utility model provides a kind of spurious rays elimination imaging lens, including the mirror with hollow structure
Cylinder 1 and lens set, for lens group settings in lens barrel 1, lens set successively includes first with positive light coke from the object side to image side
Lens 21, the second lens 22 with positive light coke, the third lens 23 with positive light coke and the with negative power the 4th
Lens 24 are provided with light hole 11 on lens barrel 1, are equipped with rectangular optically focused tunnel 12 in lens barrel 1.
Wherein, first lens 21 are the curved month type eyeglass for being convex to object space, are arranged in light hole 11.According to optics
Design principle, the first lens 21 assume responsibility for the larger focal power of entire optical lens system, make axis outer light beam after preceding group of eyeglass,
The angle of light and optical axis is quickly reduced,
Wherein, second lens 22 are fan eyeglass, and the plane of incidence area of second lens 22 is greater than its exit facet
Area, the plane of incidence of the second lens 22 are the exit facet of the first lens 21, and the exit facet of the second lens 22 is arc convex.
Wherein, the third lens 23 are fan eyeglass, and the plane of incidence area of the third lens 23 is less than its exit facet
Area, the plane of incidence of the third lens 23 is corresponding with the exit facet of the second lens 22, and is connected to by rectangular optically focused tunnel 12, the
The exit facet of three lens 23 is arc convex.It is connected between second lens 22 and the third lens 23 by rectangular optically focused tunnel 12,
The design in rectangular optically focused tunnel 12 can be to avoid unwanted light, that is to say, that can eliminate stray light, avoid unnecessary
Light improves imaging effect, to improve lens performance to eyeglass image contributions generated.
Wherein, the 4th lens 24 are the curved month type eyeglass for being convex to image space, and the exit facet of the third lens 23 is the 4th saturating
The plane of incidence of mirror 24.
In conclusion its lens set is made of 4 eyeglasses, positive negative power combination realizes the complete of optical lens system
There is excellent resolution ratio in field range, and undistorted, according to the optical Design of 4 eyeglasses and rectangular optically focused
The design in tunnel can effectively improve field angle and can preferably cooperate the incident angle of eyeglass, to reach 94 ° or more of super large
Field angle.
Further, the lens barrel 1 includes being provided with the first barrel 13 of the light hole 11 and from the first barrel 13
Bend the second barrel 14 extended.Second barrel 14 include close to optical axis trapezoidal inner sidewall 141 and with trapezoidal inner sidewall
141 lateral walls 142 opposite and far from optical axis, the second lens 22 and the third lens 23 are separately mounted to the trapezoidal of the second barrel 14
On two sides of inner sidewall 141, the rectangular optically focused tunnel is formed between the top surface of the trapezoidal inner sidewall 141 of the second barrel 14
12。
Further, the exit facet of the 4th lens 24 is correspondingly arranged on optical filter 3, and the optical filter 3 is using blue glass
Glass optical filter.Using smalt technology, infrared light can be absorbed, increase the function and effect of visible light, reduce color difference
And veiling glare, promote image quality.In another embodiment, the optical filter 3 can also be adopted as infrared cut of light optical filter, by
Be to infrared light in smalt optical filter it is absorption, compared to using the technical solution that reflects infrared light, will reduce because
Infrared external reflection and formed ghost, veiling glare the problems such as, it is therefore preferred that the optical filter 3 be smalt optical filter.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (5)
1. a kind of spurious rays eliminate imaging lens, including lens barrel and lens set with hollow structure, the lens group settings
In the lens barrel, it is characterised in that: the lens set successively include from the object side to image side first lens with positive light coke,
The second lens with positive light coke, the third lens with positive light coke and the 4th lens with negative power, the mirror
It is provided with light hole on cylinder, is equipped with rectangular optically focused tunnel in the lens barrel；
First lens are the curved month type eyeglass for being convex to object space, are arranged in the light hole；
Second lens be fan eyeglass, and the plane of incidence area of second lens be greater than its exit facet area, described second
The plane of incidence of lens is the exit facet of first lens, and the exit facet of second lens is arc convex；
The third lens are fan eyeglass, and the plane of incidence area of the third lens is less than its exit facet area, the third
The plane of incidence of lens is corresponding with the exit facet of second lens, and passes through the rectangular optically focused tunnel connection, the third
The exit facet of lens is arc convex；
4th lens are the curved month type eyeglass for being convex to image space, and the exit facet of the third lens is entering for the 4th lens
Penetrate face.
2. a kind of spurious rays according to claim 1 eliminate imaging lens, it is characterised in that: the lens barrel includes setting
The second barrel for having the first barrel of the light hole and extending from first barrel bending.
3. a kind of spurious rays according to claim 2 eliminate imaging lens, it is characterised in that: second barrel includes
Close to optical axis trapezoidal inner sidewall and it is opposite with the trapezoidal inner sidewall and far from optical axis lateral wall, second lens with
The third lens are separately mounted on two sides of the trapezoidal inner sidewall of second barrel, the trapezoidal inside of second barrel
The rectangular optically focused tunnel is formed between the top surface of wall.
4. a kind of spurious rays according to claim 1 eliminate imaging lens, it is characterised in that: the 4th lens go out
The face of penetrating is correspondingly arranged on optical filter.
5. a kind of spurious rays according to claim 4 eliminate imaging lens, it is characterised in that: the optical filter is blue glass
Glass optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821644450.4U CN208780896U (en) | 2018-10-11 | 2018-10-11 | A kind of spurious rays elimination imaging lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821644450.4U CN208780896U (en) | 2018-10-11 | 2018-10-11 | A kind of spurious rays elimination imaging lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208780896U true CN208780896U (en) | 2019-04-23 |
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ID=66161500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821644450.4U Active CN208780896U (en) | 2018-10-11 | 2018-10-11 | A kind of spurious rays elimination imaging lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208780896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099191A (en) * | 2020-09-14 | 2020-12-18 | 福建福光股份有限公司 | Large-target-surface high-definition lens with anti-laser-interference capability |
| CN112255761A (en) * | 2020-10-15 | 2021-01-22 | 福建福光股份有限公司 | Folding type long-focus high-definition fog-penetrating lens with stray light interference resistance |
-
2018
- 2018-10-11 CN CN201821644450.4U patent/CN208780896U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099191A (en) * | 2020-09-14 | 2020-12-18 | 福建福光股份有限公司 | Large-target-surface high-definition lens with anti-laser-interference capability |
| CN112255761A (en) * | 2020-10-15 | 2021-01-22 | 福建福光股份有限公司 | Folding type long-focus high-definition fog-penetrating lens with stray light interference resistance |
| CN112255761B (en) * | 2020-10-15 | 2022-06-07 | 福建福光股份有限公司 | Folding type long-focus high-definition fog-penetrating lens with stray light interference resistance |
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