CN213423591U - High-pixel full-glass wide-angle lens - Google Patents
High-pixel full-glass wide-angle lens Download PDFInfo
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- CN213423591U CN213423591U CN202022380070.8U CN202022380070U CN213423591U CN 213423591 U CN213423591 U CN 213423591U CN 202022380070 U CN202022380070 U CN 202022380070U CN 213423591 U CN213423591 U CN 213423591U
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Abstract
The utility model discloses a full glass wide-angle lens of high pixel, wide-angle lens includes from object space to image space in proper order: the lens comprises a first lens, a second lens, a third lens, a diaphragm space ring, a fourth lens, a fifth lens, a cemented lens and a sixth lens, wherein the cemented lens and the sixth lens are formed by cementing the first lens, the second lens, the third lens and the fifth lens, the first lens is crescent negative lens glass, the second lens is crescent negative lens glass, the third lens is double-convex positive lens glass, the fourth lens and the fifth lens are cemented positive lens glass, and the sixth lens is double-convex positive lens glass. The utility model discloses do not receive environmental factor influences such as temperature and humidity, advantages such as imaging quality is stable, and wide-angle lens aperture value is little, advances bright big relatively, and black light night vision is effectual, better application promotion.
Description
The technical field is as follows:
the utility model relates to the field of optical technology, especially, relate to a full glass wide-angle lens of high pixel.
Background art:
at present, most of the existing wide-angle lenses adopt a structure combining glass and plastic, although the imaging quality is improved, the cost is reduced and the like; however, the wide-angle lens combined by glass and plastic is sensitive to the influence of temperature, humidity and other environmental factors, so that the wide-angle lens has poor imaging quality stability and is not beneficial to application.
The utility model has the following contents:
an object of the utility model is to provide a full glass wide-angle lens of high pixel does not receive environmental factor influences such as temperature and humidity, advantages such as imaging quality is stable, and wide-angle lens light ring value is little, advances bright big relatively, and black light night vision is effectual, better application and popularization.
The utility model discloses by following technical scheme implement: the utility model provides a full glass wide angle lens of high pixel, wide angle lens includes from object space to image space in proper order: the lens comprises a first lens, a second lens, a third lens, a diaphragm space ring, a fourth lens, a fifth lens, a cemented lens and a sixth lens, wherein the cemented lens and the sixth lens are formed by cementing the first lens, the second lens, the third lens and the fifth lens, the first lens is crescent negative lens glass, the second lens is crescent negative lens glass, the third lens is double-convex positive lens glass, the fourth lens and the fifth lens are cemented positive lens glass, and the sixth lens is double-convex positive lens glass.
Preferably, the wide-angle lens satisfies the following relation:
Nd2≥1.55，Vd2≥63；
wherein Nd2 is the D light refractive index of the second lens, and Vd2 is the D light Abbe constant of the second lens.
Preferably, the wide-angle lens satisfies the following relation:
f1/f≤-2；
wherein f1 is the first lens focal length; f is the effective focal length of the wide-angle lens.
Preferably, the wide-angle lens satisfies the following relation:
f3/f≤1.6；
wherein f3 is the third lens focal length; f is the effective focal length of the wide-angle lens.
Preferably, the wide-angle lens satisfies the following relation:
f6/f≤2.75；
wherein f6 is the sixth lens focal length; f is the effective focal length of the wide-angle lens.
Preferably, the fourth lens and the fifth lens are cemented lenses, the fourth lens is a concave lens, concave surfaces on two sides of the fourth lens are different in concave degree, the fifth lens is a convex lens, and a concave surface on one side of the fourth lens, which is deep in concave degree, is cemented with a convex surface of the fifth lens.
Preferably, the wide-angle lens has a diagonal field angle of 170 ° or more and a horizontal field angle of 140 ° or more.
Preferably, the aperture value of the wide-angle lens is less than 2.1.
Preferably, the total optical length of the wide-angle lens is less than or equal to 17 mm.
Preferably, a waterproof sealing ring is arranged between the first lens and the second lens, and a metal spacer ring is arranged between the cemented lens and the sixth lens.
The utility model has the advantages that:
the utility model discloses do not receive environmental factor influences such as temperature and humidity, advantages such as imaging quality is stable, and the light ring value is less than 2.1, and wide-angle lens light ring value is little, advances bright big relatively, and black light night vision is effectual, better application promotion.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a high-pixel full-glass wide-angle lens according to an embodiment of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a high-pixel full-glass wide-angle lens, which sequentially comprises from an object space to an image space: the lens comprises a first lens 1, a second lens 3, a third lens 4, a diaphragm spacer 5, a cemented lens 6 formed by cementing a fourth lens and a fifth lens, and a sixth lens 8, wherein the first lens 1 is crescent negative lens glass, the second lens 3 is crescent negative lens glass, the third lens 4 is double-convex positive lens glass, the fourth lens and the fifth lens are cemented positive lens glass, and the sixth lens 8 is double-convex positive lens glass.
Wherein, the wide-angle lens satisfies the following relational expression:
Nd2≥1.55，Vd2≥63；
where Nd2 is the D-light refractive index of the second lens 3, and Vd2 is the D-light abbe constant of the second lens 3.
The wide-angle lens satisfies the following relation:
f1/f≤-2；
wherein f1 is the focal length of the first lens 1; f is the effective focal length of the wide-angle lens.
Or f3/f is less than or equal to 1.6;
wherein f3 is the focal length of the third lens 4; f is the effective focal length of the wide-angle lens.
Or f6/f is less than or equal to 2.75;
wherein f6 is the focal length of the sixth lens 8; f is the effective focal length of the wide-angle lens.
The fourth lens and the fifth lens are cemented lenses, and the imaging quality can be improved. The fourth lens is a concave lens, concave surfaces on two sides of the fourth lens are different in concave degree, the fifth lens is a convex lens, and the concave surface on one side of the fourth lens, which is deep in concave degree, is glued with the convex surface of the fifth lens.
The utility model discloses a wide-angle lens's diagonal angle of view angle is more than or equal to 170, and horizontal angle of view more than or equal to 140, the aperture value is less than 2.1, and optics total length is less than or equal to 17 mm. Through the structure, the total length TTL17mm of the wide-angle lens can be ensured, the visual angle range is larger than 160 degrees, the working temperature range is-40 ℃ to 85 ℃, and the distortion of lens imaging is small. Therefore, the structure can further reduce the whole length of the wide-angle lens without influencing the imaging of the lens.
In addition, a waterproof sealing ring 2 is arranged between the first lens 1 and the second lens 3, and a metal spacer 7 is arranged between the cemented lens 6 and the sixth lens 8, so that the waterproof and protective effects can be achieved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a full glass wide angle lens of high pixel, its characterized in that, wide angle lens includes from object space to image space in proper order: first lens (1), second lens (3), third lens (4), diaphragm spacer (5), fourth lens and fifth lens veneer formed (6), sixth lens (8), first lens (1) is crescent negative lens glass, second lens (3) are crescent negative lens glass, third lens (4) are biconvex positive lens glass, fourth lens and fifth lens are glued positive lens glass, sixth lens (8) are biconvex positive lens glass.
2. The high-pixel full-glass wide-angle lens according to claim 1, wherein the wide-angle lens satisfies the following relation:
Nd2≥1.55，Vd2≥63；
wherein Nd2 is the D light refractive index of the second lens (3), and Vd2 is the D light Abbe constant of the second lens (3).
3. The high-pixel full-glass wide-angle lens according to claim 1, wherein the wide-angle lens satisfies the following relation:
f1/f≤-2；
wherein f1 is the focal length of the first lens (1); f is the effective focal length of the wide-angle lens.
4. The high-pixel full-glass wide-angle lens according to claim 1, wherein the wide-angle lens satisfies the following relation:
f3/f≤1.6；
wherein f3 is the focal length of the third lens (4); f is the effective focal length of the wide-angle lens.
5. The high-pixel full-glass wide-angle lens according to claim 1, wherein the wide-angle lens satisfies the following relation:
f6/f≤2.75；
wherein f6 is the focal length of the sixth lens (8); f is the effective focal length of the wide-angle lens.
6. The wide-angle lens with full glasses and high resolution of claim 1, wherein the fourth lens and the fifth lens are cemented lenses, the fourth lens is a concave lens, the concave surface of the two sides of the fourth lens has different concave degree, the fifth lens is a convex lens, and the concave surface of the fourth lens at the deep concave degree is cemented with the convex surface of the fifth lens.
7. The high-pixel full-glass wide-angle lens of claim 1, wherein the diagonal field angle of the wide-angle lens is greater than or equal to 170 ° and the horizontal field angle is greater than or equal to 140 °.
8. The high-pixel full-glass wide-angle lens of claim 1, wherein the aperture value of the wide-angle lens is less than 2.1.
9. The high-pixel full-glass wide-angle lens of claim 1, wherein the total optical length of the wide-angle lens is less than or equal to 17 mm.
10. The high-pixel full-glass wide-angle lens according to claim 1, wherein a waterproof sealing ring (2) is arranged between the first lens (1) and the second lens (3), and a metal spacer ring (7) is arranged between the cemented lens (6) and the sixth lens (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380070.8U CN213423591U (en) | 2020-10-22 | 2020-10-22 | High-pixel full-glass wide-angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380070.8U CN213423591U (en) | 2020-10-22 | 2020-10-22 | High-pixel full-glass wide-angle lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213423591U true CN213423591U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022380070.8U Active CN213423591U (en) | 2020-10-22 | 2020-10-22 | High-pixel full-glass wide-angle lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213423591U (en) |
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2020
- 2020-10-22 CN CN202022380070.8U patent/CN213423591U/en active Active
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