CN107589526A - A kind of big thang-kngs of 4mm day and night confocal camera lens - Google Patents
A kind of big thang-kngs of 4mm day and night confocal camera lens Download PDFInfo
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- CN107589526A CN107589526A CN201710908372.8A CN201710908372A CN107589526A CN 107589526 A CN107589526 A CN 107589526A CN 201710908372 A CN201710908372 A CN 201710908372A CN 107589526 A CN107589526 A CN 107589526A
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Abstract
The present invention relates to a kind of big thang-kngs of 4mm day and night confocal camera lens, including body tube and the optical system being arranged in body tube, the focal power that the optical system includes setting gradually along light incident direction is that negative preceding group of eyeglass, diaphragm and focal power are rear group of positive eyeglass, and negative crescent moon lens, double-concave negative lens, biconvex lens and the first bent moon positive lens that eyeglass includes setting gradually are organized before described；Group eyeglass includes setting gradually after described the second bent moon positive lens, by the 3rd bent moon positive lens and bent moon negative lens group into glue pellet, the 4th bent moon positive lens.The camera lens adapts to protection and monitor field, rational in infrastructure, can solve that edge is not only rational in infrastructure, easy to process as the problems such as matter is low, night vision effect is undesirable in high-resolution lens, and with big thang-kng amount, high-resolution and integrated imaging ability are high the characteristics of.
Description
Technical field：
The present invention relates to a kind of big thang-kngs of 4mm day and night confocal camera lens.
Background technology：
The existing a variety of tight shots in early stage market are applied in safety-protection system, but there is resolution ratio is low, edge for the tight shot
As the problems such as matter is low, illumination decay is fast and susceptibility is high, select to reduce visible ray point to lift the night vision effect of camera lens
Resolution, as a result camera lens integrated imaging ability is declined.Therefore, it is necessary to design it is a adapt to protection and monitor field, have
The good and easy to process camera lens of high-resolution, night vision effect.
The content of the invention：
The present invention is solved in high-resolution lens to adapt to the trend that protection and monitor field gradually steps up to resolution of lens requirement
Edge is as the problems such as matter is low, night vision effect is undesirable, there is provided a kind of big thang-kngs of 4mm day and night confocal camera lens, it is not only rational in infrastructure, easy
In processing, and there is the characteristics of big thang-kng amount, high-resolution and integrated imaging ability are high.
To achieve these goals, the technical solution adopted by the present invention is：A kind of big thang-kngs of 4mm day and night confocal camera lens, bag
Body tube and the optical system being arranged in body tube are included, the optical system includes the light set gradually along light incident direction
Focal power is that negative preceding group of eyeglass, diaphragm and focal power are rear group of positive eyeglass, and it is negative including what is set gradually that eyeglass is organized before described
Crescent moon lens, double-concave negative lens, biconvex lens and the first bent moon positive lens；Group eyeglass includes second set gradually after described
Bent moon positive lens, by the 3rd bent moon positive lens and bent moon negative lens group into glue pellet, the 4th bent moon positive lens.
Further, the airspace between the preceding group eyeglass and rear group eyeglass is 2.1mm.
Further, the airspace between the negative crescent moon lens and double-concave negative lens is 2.8mm, and the concave-concave is negative saturating
The airspace of mirror and biconvex lens is 0.7mm, and the airspace of the biconvex lens and the first bent moon positive lens is 0.4mm,
The airspace of second bent moon positive lens and the 3rd bent moon positive lens is 0.3mm, the bent moon negative lens and the 4th bent moon
The airspace of positive lens is 0.15mm.
Further, it is provided with flat board optical filter between the 4th bent moon positive lens and image planes.
Compared with prior art, the present invention has the following effects that：（1）Structure design of the present invention is simple, reasonable, thang-kng amount
Greatly, areas imaging is wide, and illumination is higher；（2）The maximum chief ray incidence angles of the camera lens are smaller, efficiently solve the spuious of camera lens
Optical issue；（3）Glue pellet fully lifts night vision performance from the characteristic of the big material fit Abbe number of refractive index difference；（4）It is logical
The effect that mutually compensates for for crossing each structural parameters and material parameter realizes that camera lens without thermalization, i.e., still has good as matter under high/low temperature；
（5）Using eight chip architectures, aberration is fully corrected, reasonable distribution focal power, declines camera lens susceptibility, makes camera lens difficulty of processing
Reduce.
Brief description of the drawings：
Fig. 1 is the optical texture schematic diagram of the present invention；
Fig. 2 is MTF functional value schematic diagram of the present invention under visible light；
Fig. 3 is MTF functional value schematic diagram of the present invention under night vision.
In figure：
A1- bears crescent moon lens；A2- double-concave negative lens；A3- biconvex lens；The bent moon positive lens of A4- first；The bent moons of B1- second are just saturating
Mirror；The bent moon positive lens of B2- the 3rd；B3- bent moon negative lenses；The bent moon positive lens of B4- the 4th；C- diaphragms.
Embodiment:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As Figure 1-3, a kind of big thang-kngs of 4mm of the present invention day and night confocal camera lens, including body tube and it is arranged on body tube
Interior optical system, the focal power that the optical system includes setting gradually along light incident direction are negative preceding group of eyeglass, light
Late C and focal power are rear group of positive eyeglass, and negative crescent moon lens A1, double-concave negative lens that eyeglass includes setting gradually are organized before described
A2, biconvex lens A3 and the first bent moon positive lens A4；It is described after group eyeglass include set gradually the second bent moon positive lens B1,
The glue pellet that is made up of the 3rd bent moon positive lens B2 and bent moon negative lens B3, the 4th bent moon positive lens B4.
In the present embodiment, the airspace organized before described between eyeglass and rear group eyeglass is 2.1mm.
In the present embodiment, the airspace between the negative crescent moon lens A1 and double-concave negative lens A2 is 2.8mm, described double
Recessed negative lens A2 and biconvex lens A3 airspace is 0.7mm, the biconvex lens A3 and the first bent moon positive lens A4 sky
For gas at intervals of 0.4mm, the airspace of the second bent moon positive lens B1 and the 3rd bent moon positive lens B2 are 0.3mm, described curved
Month negative lens B3 and the 4th bent moon positive lens B4 airspace is 0.15mm.
In the present embodiment, flat board optical filter is provided between the 4th bent moon positive lens B4 and image planes.
In the present embodiment, the specific optical index of the camera lens is：
（1）F number=2.0；
（2）Focal length：EFFL=4mm；
（3）The angle of visual field：2w≥132°；
（4）Imaging circular diameter is more than Φ 8.9；
（5）Distortion：＜ -17%；
（6）Operating spectral range：480nm~850nm；
（7）Optics overall length TTL≤29.8mm, optics rear cut-off distance >=6.3mm；
（8）The camera lens is applied to 8,000,000 pixel high-resolution CCD or cmos camera.
The camera lens is made up of eight spherical lenses, is born using preceding group, is organized positive anti-long distance structure afterwards, makes full use of anti-long distance
The advantage of structure, big visual field, the lens design of large aperture are realized, preceding group of eyeglass captures the light of big visual field, and rear eyeglass of organizing will
These light-ray condensings simultaneously correct aberration caused by negative group, and rear eyeglass of organizing uses four chip architectures, is advantageous to balance big imaging
Aberration caused by face, and reduce the incidence angle of chief ray；Eight slice structures are more beneficial for the distribution of focal power, make camera lens
Resolution ratio is greatly improved, and also can fully reduce the susceptibility of each minute surface so that whole camera lens is more readily processed, and realizes its amount
Production property.
In the present embodiment, the parameter of eyeglass is as shown in the table in the camera lens：
In the present embodiment, from Fig. 2 and Fig. 3, the visible ray of the camera lens passes letter value and is more than 0.6 to place in 200 lines, and edge is more than
0.4, thus can under the chip of 8,000,000 pixels normal work and with well as matter；Night vision pass letter value 200 lines to more than
0.4, realize day and night confocal.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (4)
- A kind of 1. big thang-kngs of 4mm day and night confocal camera lens, it is characterised in that：Including body tube and the optical system being arranged in body tube System, the focal power that the optical system includes setting gradually along light incident direction are negative preceding group of eyeglass, diaphragm and light focus Spend for rear group of positive eyeglass, it is described before group eyeglass include setting gradually negative crescent moon lens, double-concave negative lens, biconvex lens and First bent moon positive lens；Group eyeglass includes setting gradually after described the second bent moon positive lens, by the 3rd bent moon positive lens and curved Month negative lens group into glue pellet, the 4th bent moon positive lens.
- A kind of 2. big thang-kngs of 4mm according to claim 1 day and night confocal camera lens, it is characterised in that：It is described before group eyeglass with The airspace organized afterwards between eyeglass is 2.1mm.
- A kind of 3. big thang-kngs of 4mm according to claim 1 day and night confocal camera lens, it is characterised in that：The negative crescent moon lens Airspace between double-concave negative lens is 2.8mm, and the airspace of the double-concave negative lens and biconvex lens is 0.7mm, The airspace of the biconvex lens and the first bent moon positive lens is 0.4mm, and second bent moon positive lens and the 3rd bent moon are just The airspace of lens is 0.3mm, and the airspace of the bent moon negative lens and the 4th bent moon positive lens is 0.15mm.
- A kind of 4. big thang-kngs of 4mm according to claim 1 day and night confocal camera lens, it is characterised in that：4th bent moon is just Flat board optical filter is provided between lens and the image planes of camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710908372.8A CN107589526A (en) | 2017-09-29 | 2017-09-29 | A kind of big thang-kngs of 4mm day and night confocal camera lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710908372.8A CN107589526A (en) | 2017-09-29 | 2017-09-29 | A kind of big thang-kngs of 4mm day and night confocal camera lens |
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| Publication Number | Publication Date |
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| CN107589526A true CN107589526A (en) | 2018-01-16 |
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| CN201710908372.8A Pending CN107589526A (en) | 2017-09-29 | 2017-09-29 | A kind of big thang-kngs of 4mm day and night confocal camera lens |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407274A (en) * | 2018-11-23 | 2019-03-01 | 信华精机有限公司 | A kind of day and night confocal optics camera lens |
| CN109471240A (en) * | 2018-12-13 | 2019-03-15 | 福建福光天瞳光学有限公司 | A kind of focal length infrared optics athermalism system |
| CN110554488A (en) * | 2019-08-31 | 2019-12-10 | 福建福光天瞳光学有限公司 | small day and night dual-purpose vehicle-mounted optical system and working method thereof |
| CN116299962A (en) * | 2022-12-25 | 2023-06-23 | 福建福光股份有限公司 | Wide spectrum optical system with large aperture and high uniformity |
-
2017
- 2017-09-29 CN CN201710908372.8A patent/CN107589526A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407274A (en) * | 2018-11-23 | 2019-03-01 | 信华精机有限公司 | A kind of day and night confocal optics camera lens |
| CN109407274B (en) * | 2018-11-23 | 2024-05-24 | 惠州市信华光学技术有限公司 | Day and night confocal optical lens |
| CN109471240A (en) * | 2018-12-13 | 2019-03-15 | 福建福光天瞳光学有限公司 | A kind of focal length infrared optics athermalism system |
| CN109471240B (en) * | 2018-12-13 | 2024-03-01 | 福建福光天瞳光学有限公司 | Long-focus infrared optical athermalization system |
| CN110554488A (en) * | 2019-08-31 | 2019-12-10 | 福建福光天瞳光学有限公司 | small day and night dual-purpose vehicle-mounted optical system and working method thereof |
| CN116299962A (en) * | 2022-12-25 | 2023-06-23 | 福建福光股份有限公司 | Wide spectrum optical system with large aperture and high uniformity |
| CN116299962B (en) * | 2022-12-25 | 2024-04-05 | 福建福光股份有限公司 | Wide spectrum optical system with large aperture and high uniformity |
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