CN208654423U - 6000000 pixels are without the small-sized camera lens of the full-color high definition of thermalization - Google Patents

Abstract

The utility model relates to a kind of 6,000,000 pixels without the small-sized camera lens of the full-color high definition of thermalization, suitable for safety monitoring, Car license recognition, the fields such as smart home, the front lens group that the camera lens includes body tube and is set in turn in body tube along light incident direction, light bar and rear microscope group, the front lens group includes the first lens that setting is arranged successively along light incident direction, second lens, the third lens and the 4th lens, second face of the first lens is concave surface, second lens, the third lens and the total focal length range of the 4th lens are 25~80mm, the focal range of microscope group is 7~12mm afterwards, it is clear that the camera lens is still capable of providing under the environmental condition of starlight, the colour picture of low noise point, the field angle of the camera lens is up to 120 ° ± 10%, relative aperture D/f ' is 1:1.2 ± 10%, it is applicable in camera shooting Machine image planes 1/2.7inch or more meets the use of most security protection scenes.

Description

6000000 pixels are without the small-sized camera lens of the full-color high definition of thermalization

Technical field

The utility model relates to camera lens field, in particular to a kind of 6,000,000 pixels are fitted without the small-sized camera lens of the full-color high definition of thermalization For fields such as safety monitoring, Car license recognition, smart homes.

Background technique

With flourishing for intelligent security-protecting and monitoring market, existing security product type is more and more abundant on the market.People Selectable range it is also increasing, it is desirable that it is also higher and higher.In addition " safety society ", " safety city that government driving is implemented The major projects such as city " and " 3111 engineering ", all effectively promote the rapid growth of security product.

The relative aperture D/f ' of Conventional compact camera lens not can guarantee also usually in 1.6-2.2 or so in star on the market at present In the environment of light (illumination 0.0001Lux), even it is clear enough, low still to guarantee to have in the environment of having white light compensation The colour picture of noise.This is to that is to say that the relative aperture F# of camera lens is determined since the relative aperture D/f ' of camera lens is determined. This camera lens is under night unglazed environment, and due to leading to deficiency in light quantity, the noise of the image at night and brightness sharply decline.Even if To have white light compensation, also because of the brightness of lamp and the dispersion angle problem of lamp, cause entire picture image quality it is unbalanced, it is fuzzy, Problem more than noise.This makes public security officer usually when acquiring night scene of a crime picture, can not due to image blur The case where tracking suspect.At present there is no one kind can also mention in the environment of starlight (illumination 0.0001Lux) For the camera lens of color high-definition picture.

Utility model content

The purpose of this utility model is to provide a kind of 6,000,000 pixels without the small-sized camera lens of the full-color high definition of thermalization, which exists Clear, low noise point colour picture is still capable of providing under the environmental condition of starlight, the field angle of the camera lens up to 120 ° ± 10%, Relative aperture D/f ' is 1:1.2 ± 10%, is applicable in video camera image planes 1/2.7inch or more, meets most security protection scenes It uses.

The utility model is realized in this way: without the small-sized camera lens of the full-color high definition of thermalization, feature exists 6,000,000 pixels of one kind In: front lens group, light bar and the rear microscope group that the camera lens includes body tube and is set in turn in body tube along light incident direction, The front lens group includes the first lens, the second lens, the third lens and the 4th that setting is arranged successively along light incident direction Lens, second face of first lens are concave surface, the total focal length range of second lens, the third lens and the 4th lens Focal range for 25~80mm, the rear microscope group is 7~12mm.

Further, first lens are positive selenodont lens, and second lens are double concave type lens, the third Lens are negative selenodont lens, and the 4th lens are lenticular lens, it is described after microscope group include along light incident direction successively The 5th lens, the 6th lens, the 7th lens, the 8th lens and the 9th lens being arranged, the 6th lens and the 7th are thoroughly At the gluing unit of contiguity, the 5th lens are negative selenodont lens microscope group, and the 6th lens are platycelous lens, and described the Seven lens are lenticular lens, and the 8th lens are lenticular lens, and the 9th lens are lenticular lens.

Further, each lens of the front lens group need to be met the following optical conditions:

1.45 < n1 < 1.1.55,66 < v1 < 95；

1.5 < n2 < 1.7,45 < v2 < 61；

1.75 < n3 < 1.85,40 < v3 < 55；

1.85 < n4 < 1.95,28 < v4 < 38；

Wherein n1-n4 is followed successively by the refractive index of first the-the four lens of lens, and v1-v4 is followed successively by first the-the four lens of lens Abbe number；

Each lens of the front lens group need to be met the following optical conditions:

1.7<n6<1.84,20<v6<29；

1.88<n7<1.95,33<v7<36.5；

1.76<n8<1.78,36.5<v8<49；

1.63<n9<1.75,50<v9<59；

1.7<n10<1.84,35<v10<42；

Wherein n6-n10 is followed successively by the refractive index of the 6th the-the ten lens of lens, and v6-v10 is followed successively by the 6th lens-the ten thoroughly The Abbe number of mirror.

Further, the airspace between first lens and the second lens is 3~3.2mm；Second lens Airspace between the third lens is 0.8~0.9mm；Airspace between the third lens and the 4th lens is 0.1~0.2mm；Airspace between 4th lens and light bar is 1.9~2.1mm；4th lens and the 5th are thoroughly Airspace between mirror is 3.2~3.5mm；Airspace between 5th lens and the 6th lens is 1.1~ 1.35mm；Airspace between 7th lens and the 8th lens is 0.1~0.2mm；8th lens and the 9th are thoroughly Airspace between mirror is 0.1~0.2mm.

Further, the small-sized camera lens further includes preceding pressing ring, the first mechanical spacer ring, the second mechanical spacer ring, third machinery Spacer ring, the 4th mechanical spacer ring and the 5th mechanical spacer ring, the front end nozzle that the preceding pressing ring is fixedly installed in body tube are outer and right The front position of first lens plays position-limiting action, and first mechanical spacer ring is fixedly installed in the cylinder of body tube and is located at the The airspace of the two is limited between three lens and the 4th lens, second mechanical spacer ring is fixedly installed in the cylinder of body tube The airspace of the two is limited in vivo and between the 4th lens and the 5th lens, and the third mechanical spacer ring is fixedly mounted In the airspace for limiting the two in the cylinder of body tube and between the 5th lens and the 6th lens, the described 4th is mechanical Spacer ring is fixedly installed in the cylinder of body tube and limits between the 7th lens and the 8th lens the airspace of the two, 5th mechanical spacer ring is fixedly installed in the cylinder of body tube and between the 8th lens and the 9th lens to limit two The airspace of person.

For the prior art, the utility model is had the advantage that

(1) 6,000,000 pixel provided by the utility model is without the small-sized camera lens of the full-color high definition of thermalization, environment of the camera lens in starlight Under the conditions of be still capable of providing clear, low noise point colour picture, the field angle of the camera lens is up to 120 ° ± 10%, relative aperture D/ F ' is 1:1.2 ± 10%, is applicable in video camera image planes 1/2.7inch or more, is able to satisfy the use of most security protection scenes；

(2) 6,000,000 pixel provided by the utility model is better than without the small-sized camera lens of the full-color high definition of thermalization, full filed MTF 220LP/mm > 0.3,70% visual field of disc of confusion are better than 2.0um, and 90% is better than 2.2um；

(3) 6,000,000 pixel provided by the utility model passes through the various materials of lens without the small-sized camera lens of the full-color high definition of thermalization Collocation, to balance the material of various linear expansion coefficient eyeglasses, the back focal length variation of compensation system enables the system to reach In -30 DEG C~60 DEG C this big temperature ranges, still meet high-definition image without out of focus, guarantee system can reach no thermalization Effect；

(4) 6,000,000 pixel provided by the utility model is without the small-sized camera lens of the full-color high definition of thermalization, second face of the first lens It is designed to concave surface, to converge after enabling optical system light to receive to the greatest extent, designs second face and assume responsibility for and be It unites maximum negative curvature of field aberration；Second lens shape be double concave type lens, two sides assume responsibility for largely negative curvature of field aberration and Maximum spherical aberration in system meets the needs without thermalization；The third lens are negative meniscus lens, and first face of third piece eyeglass is Concave surface assumes responsibility for system largely positive curvature of field aberration, the negative field generated for compensating first eyeglass and second eyeglass Bent aberration, effectively improves the image quality of system, and the monnolithic case of reduction system, and the first face and the second face are respectively provided with certain journey The positive and negative astigmatic image error of degree, the two are effectively balanced；4th lens are lenticular lens, assume responsibility for largely positive field Song, two sides have undertaken a degree of positive curvature of field aberration respectively, and first face assumes responsibility for a degree of positive astigmatic image error；5th Lens are negative meniscus lens, and lens shape bends towards stop position, and the second face assumes responsibility for a degree of positive curvature of field aberration, is used for The negative curvature of field aberration that first and second lens of balance system introduce, effectively reduces the distortion of system；6th lens are plano-concave lens With the gluing unit of the 7th lens (biconvex lens) composition contiguity, the maximum lateral chromatic aberration in system is assumed responsibility for, it is effectively flat The whole color difference for the system that weighed, the resolution ratio of lifting system；8th lens and the 9th lens are all lenticular lens, for final The curvature of field and its afterimage of balance system are poor, and the 9th first, lens face is more curved, have biggish positive curvature of field aberration, for balancing system The curvature of field in system, second face curvature is larger, effectively reduces the chief ray incident angle of system, the illumination at lifting system edge；

(5) 6,000,000 pixel provided by the utility model passes through effective and reasonable use without the small-sized camera lens of the full-color high definition of thermalization The aberration balancing of eyeglass controls the aberration of total system in a very reasonable range, whole remaining maximum curvature of field picture Difference control is within the scope of an acceptable.

Detailed description of the invention

The utility model is described in further detail in conjunction with the embodiments with reference to the accompanying drawings:

Fig. 1 is structural schematic diagram of 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization；

Fig. 2 is index path of 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization；

Fig. 3 is seidel aberration profile figure of 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization；

The MTF curve figure that Fig. 4 is 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization at -30 DEG C；

The MTF curve figure that Fig. 5 is 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization at 20 DEG C；

The MTF curve figure that Fig. 6 is 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization at 60 DEG C；

The spot figure that Fig. 7 is 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization at -30 DEG C；

The spot figure that Fig. 8 is 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization at 20 DEG C；

The spot figure that Fig. 9 is 6,000,000 pixel of the utility model without the small-sized camera lens of the full-color high definition of thermalization at 60 DEG C.

Symbol description in figure: 1, preceding pressing ring, 3, body tube, A-1, the first lens, A-2, the second lens, A-3, third are saturating Mirror, A-4, the 4th lens, B, light bar, C-1, the 5th lens, C-2, the 6th lens, C-3, the 7th lens, C-4, the 8th lens, C- 5, the 9th lens, G1, the first mechanical spacer ring, G2, the second mechanical spacer ring, G3, third mechanical spacer ring, G4, the 4th mechanical spacer ring, G5, the 5th mechanical spacer ring.

Specific embodiment

The content of the present invention is described in detail with specific embodiment with reference to the accompanying drawings of the specification:

It as Figure 1-Figure 2, is a kind of 6,000,000 pixel provided by the utility model without the small-sized camera lens of the full-color high definition of thermalization, It is characterized by: the camera lens include body tube 3 and be set in turn in along light incident direction in body tube 3 front lens group, light Column B and rear microscope group, the front lens group include the first lens A-1 that setting is arranged successively along light incident direction, the second lens A- 2, second face of the third lens A-3 and the 4th lens A-4, the first lens A-1 be concave surface, the second lens A-2, The total focal length range of the third lens A-3 and the 4th lens A-4 are 25~80mm, and the focal range of the rear microscope group is 7~12mm.

Further, the first lens A-1 is positive selenodont lens, and the second lens A-2 is double concave type lens, institute The third lens A-3 is stated to be negative selenodont lens, the 4th lens A-4 is lenticular lens, it is described after microscope group include along light The 5th lens C-1, the 6th lens C-2, the 7th lens C-3, the 8th lens C-4 and the 9th that incident direction is arranged successively setting are saturating The gluing unit of mirror C-5, the 6th lens C-2 and the 7th lens C-3 composition contiguity, the 5th lens C-1 are negative selenodont Lens, the 6th lens C-2 are platycelous lens, and the 7th lens C-3 is lenticular lens, the 8th lens C-4 For lenticular lens, the 9th lens C-5 is lenticular lens.

Further, each lens of the front lens group need to be met the following optical conditions:

1.45 < n1 < 1.1.55,66 < v1 < 95；

1.5 < n2 < 1.7,45 < v2 < 61；

1.75 < n3 < 1.85,40 < v3 < 55；

1.85 < n4 < 1.95,28 < v4 < 38；

Wherein n1-n4 is followed successively by the refractive index of first the-the four lens of lens, and v1-v4 is followed successively by first the-the four lens of lens Abbe number；

Each lens of the front lens group need to be met the following optical conditions:

1.7<n6<1.84,20<v6<29；

1.88<n7<1.95,33<v7<36.5；

1.76<n8<1.78,36.5<v8<49；

1.63<n9<1.75,50<v9<59；

1.7<n10<1.84,35<v10<42；

Wherein n6-n10 is followed successively by the refractive index of the tenth lens 33 of the 6th lens 29-, and v6-v10 is followed successively by the 6th lens 29- The Abbe number of tenth lens 33.

Further, the airspace between the first lens A-1 and the second lens A-2 is 3~3.2mm；Described Airspace between two lens A-2 and the third lens A-3 is 0.8~0.9mm；The third lens A-3 and the 4th lens A-4 Between airspace be 0.1~0.2mm；Airspace between the 4th lens A-4 and light bar B is 1.9~2.1mm； Airspace between the 4th lens A-4 and the 5th lens C-1 is 3.2~3.5mm；The 5th lens C-1 and the 6th Airspace between lens C-2 is 1.1~1.35mm；Airspace between the 7th lens C-3 and the 8th lens C-4 For 0.1~0.2mm；Airspace between the 8th lens C-4 and the 9th lens C-5 is 0.1~0.2mm.

Further, pressing ring 1, the first mechanical spacer ring G1, the second mechanical spacer ring G2, third before the small-sized camera lens further includes Mechanical spacer ring G3, the 4th mechanical spacer ring G4 and the 5th mechanical spacer ring G5, before the preceding pressing ring 1 is fixedly installed in body tube 3 It holds nozzle outer and position-limiting action is risen to the front position of the first lens A-1, the first mechanical spacer ring G1 is fixedly installed in primary mirror The airspace of the two, second machine are limited in the cylinder of cylinder 3 and between the third lens A-3 and the 4th lens A-4 Tool spacer ring G2 is fixedly installed in the cylinder of body tube 3 and between the 4th lens A-4 and the 5th lens C-1 to limit the two Airspace, the third mechanical spacer ring G3 is fixedly installed in the cylinder of body tube 3 and is located at the 5th lens C-1 and the 6th Airspace between lens C-2 both to limit, the 4th mechanical spacer ring G4 be fixedly installed in the cylinder of body tube 3 and The airspace of the two, the fixed peace of the 5th mechanical spacer ring G5 are limited between the 7th lens C-3 and the 8th lens C-4 The airspace of the two is limited in cylinder loaded on body tube 3 and between the 8th lens C-4 and the 9th lens C-5.

The utility model relative aperture F# < 1.2, can guarantee under the environmental condition of starlight (illumination 0.0001Lux) according to The old picture for guaranteeing to have low noise point, field of view angle > 120 ° meet the use of most security protection scenes.Due to the phase of camera lens To aperture D/f ' very little.The depth of focus dof of camera lens for other object lens of large relative aperture D/f ' camera lens it is less than normal very much.Such as Fig. 3 institute It is shown as the seidel aberration profile figure of the utility model, as can be seen from the figure: the primary aberration correction of optical system is good, is The tolerance tolerance of system is good.Existing camera lens, ambient temperature variation (- 30 DEG C -60 DEG C) easily cause the empty coke of image, greatly Influence the use scope of camera lens.As Figure 4-Figure 6, respectively MTF curve of the utility model at-30 DEG C, 20 DEG C and 60 DEG C Figure is spot figure of the utility model at -30 DEG C, 20 DEG C and 60 DEG C as Figure 7-9, and as can be seen from the figure this is practical new After type is introduced without thermalized design, the influence of different geographical, different temperatures to system in design use is efficiently solved；Full filed MTF is better than 220LP/mm > 0.3, and 70% visual field of disc of confusion is better than 2.0um, and 90% is better than 2.2um, effectively meets 6,000,000 pixel need It asks.It is influenced to effectively eliminate color difference, the utility model, which designs, carries out achromat-design in spectral region 420-850nm；This is practical Novel contour length φ 20 (maximum outside diameter) * 32.3 (length) mm.The switching of the utility model day and night is set using compensation optical filter Meter.

Above-mentioned specific embodiment is only explained in detail the technical solution of the utility model, and the utility model is not It is only limited only to above-described embodiment, all any improvement or replacement according to the utility model principle should all be practical new at this Within the protection scope of type.

Claims (5)

1. a kind of 6,000,000 pixels are without the small-sized camera lens of the full-color high definition of thermalization, it is characterised in that: the camera lens include body tube (3) and It includes edge that front lens group in body tube (3), light bar (B) and rear microscope group, the front lens group are set in turn in along light incident direction Light incident direction is arranged successively the first lens (A-1), the second lens (A-2), the third lens (A-3) and the 4th of setting thoroughly Mirror (A-4), second face of first lens (A-1) are concave surface, second lens (A-2), the third lens (A-3) and the The total focal length range of four lens (A-4) is 25~80mm, and the focal range of the rear microscope group is 7~12mm.

2. 6,000,000 pixel according to claim 1 is without the small-sized camera lens of the full-color high definition of thermalization, it is characterised in that: described first Lens (A-1) are positive selenodont lens, and second lens (A-2) are double concave type lens, and the third lens (A-3) are negative the moon Tooth form lens, the 4th lens (A-4) are lenticular lens, and the rear microscope group includes being arranged successively to set along light incident direction The 5th lens (C-1), the 6th lens (C-2), the 7th lens (C-3), the 8th lens (C-4) and the 9th lens (C-5) set, institute The gluing unit of the 6th lens (C-2) and the 7th lens (C-3) composition contiguity is stated, the 5th lens (C-1) selenodont that is negative is saturating Mirror, the 6th lens (C-2) are platycelous lens, and the 7th lens (C-3) are lenticular lens, the 8th lens It (C-4) is lenticular lens, the 9th lens (C-5) are lenticular lens.

3. 6,000,000 pixel according to claim 2 is without the small-sized camera lens of the full-color high definition of thermalization, it is characterised in that: the preceding mirror Each lens of group need to be met the following optical conditions:

1.45 < n1 < 1.1.55,66 < v1 < 95；

1.5 < n2 < 1.7,45 < v2 < 61；

1.75 < n3 < 1.85,40 < v3 < 55；

1.85 < n4 < 1.95,28 < v4 < 38；

Wherein n1-n4 is followed successively by the refractive index of first the-the four lens of lens, and v1-v4 is followed successively by the Ah of first the-the four lens of lens Shellfish coefficient；

Each lens of the front lens group need to be met the following optical conditions:

1.7<n6<1.84,20<v6<29；

1.88<n7<1.95,33<v7<36.5；

1.76<n8<1.78,36.5<v8<49；

1.63<n9<1.75,50<v9<59；

1.7<n10<1.84,35<v10<42；

Wherein n6-n10 is followed successively by the refractive index of (29)-the ten lens (33) of the 6th lens, and v6-v10 is followed successively by the 6th lens The Abbe number of (29)-the ten lens (33).

4. 6,000,000 pixel according to claim 2 is without the small-sized camera lens of the full-color high definition of thermalization, it is characterised in that: described first Airspace between lens (A-1) and the second lens (A-2) is 3~3.2mm；Second lens (A-2) and the third lens (A-3) airspace between is 0.8~0.9mm；Between air between the third lens (A-3) and the 4th lens (A-4) It is divided into 0.1~0.2mm；Airspace between 4th lens (A-4) and light bar (B) is 1.9~2.1mm；Described 4th Airspace between lens (A-4) and the 5th lens (C-1) is 3.2~3.5mm；5th lens (C-1) and the 6th are thoroughly Airspace between mirror (C-2) is 1.1~1.35mm；Air between 7th lens (C-3) and the 8th lens (C-4) Between be divided into 0.1~0.2mm；Airspace between 8th lens (C-4) and the 9th lens (C-5) is 0.1~0.2mm.

5. 6,000,000 pixel according to claim 2 is without the small-sized camera lens of the full-color high definition of thermalization, it is characterised in that: described small-sized Camera lens further includes preceding pressing ring (1), the first mechanical spacer ring (G1), the second mechanical spacer ring (G2), third mechanical spacer ring (G3), the 4th machine Tool spacer ring (G4) and the 5th mechanical spacer ring (G5), the preceding pressing ring (1) are fixedly installed in outside the front end nozzle of body tube (3) simultaneously Position-limiting action is played to the front position of the first lens (A-1), first mechanical spacer ring (G1) is fixedly installed in body tube (3) The airspace of the two is limited in cylinder and between the third lens (A-3) and the 4th lens (A-4), described second is mechanical Spacer ring (G2) is fixedly installed in the cylinder of body tube (3) and between the 4th lens (A-4) and the 5th lens (C-1) with limit Both fixed airspace, the third mechanical spacer ring (G3) are fixedly installed in the cylinder of body tube (3) and are located at the 5th thoroughly The airspace of the two is limited between mirror (C-1) and the 6th lens (C-2), the 4th mechanical spacer ring (G4) is fixedly installed in The airspace of the two is limited in the cylinder of body tube (3) and between the 7th lens (C-3) and the 8th lens (C-4), 5th mechanical spacer ring (G5) is fixedly installed in the cylinder of body tube (3) and is located at the 8th lens (C-4) and the 9th lens (C-5) airspace of the two is limited between.