Summary of the invention
The purpose of this utility model is to provide for a kind of solving existing mobile phone in the premise for not influencing camera lens whole height
Under, increase the big field angle lens construction of biprism of the technical problem of field of view angle, is suitable for being thinned mobile phone thickness and the big view of shooting
Rink corner degree illumination.
The technical solution of the utility model is:
A kind of big field angle lens construction of biprism, is characterized in that: by lens barrel, set on the of lens barrel incident light line end
One eyeglass, is used to receive the first prism emergent ray the first prism for being used to receive the first eyeglass emergent ray in lens barrel
Lens set, the second prism for receiving lens set emergent ray, be set to lens barrel emergent light line end and for receive the second rib
5th eyeglass of mirror emergent ray forms, and the lens set is by the second eyeglass, third eyeglass and the 4th lens set successively arranged
At, the bevel angle of first prism and the second prism is 45 °, corresponding first prism of the lens barrel and the second prism it is oblique
Face position is respectively equipped with 45 ° of positioning surfaces, and the optical axis of first eyeglass and the 5th eyeglass is parallel, the optical axis of the lens set
It is respectively perpendicular with the optical axis of the first eyeglass and the 5th eyeglass, the object side of first eyeglass and image side surface face type are respectively
Recessed, the object side of the second eyeglass and image side surface face type are respectively convex, and the object side of third eyeglass and image side surface face type are respectively recessed,
The object side of 4th eyeglass and image side surface face type are respectively convex, the object side face type of the 5th eyeglass be it is recessed, image side surface face type be it is convex,
Second eyeglass is F, 0≤F≤1mm at a distance from the first prism, corresponding first prism of the lens barrel and the second eyeglass it
Between position be equipped with cone cylinder shape light passing structure, the miner diameter end of the cone cylinder shape light passing structure forms diaphragm, institute close to the first prism
The diameter for stating diaphragm is 2.2-2.8mm.
The big field angle lens construction of above-mentioned biprism, the incident ray port of the lens barrel and emergent ray port difference
Positioned at lens barrel two sides, the distance between incident ray port and emergent ray port are I, 5mm≤I≤7mm.
The big field angle lens construction of above-mentioned biprism, washer between third eyeglass and the second eyeglass by plastic washer and
It is attached at the anti-dazzling screen composition of plastic washer two sides.
The big field angle lens construction of above-mentioned biprism,
The outer diameter of first eyeglass be A1,4 mm≤A1≤6mm, object side effective diameter be A1a, 4.5 mm≤
A1a≤5.5mm, image side surface effective diameter are A1b, 2 mm≤A1b≤4mm;
The outer diameter of second eyeglass be A2,4 mm≤A2≤4.5mm, object side effective diameter be A2a, 1 mm≤
A2a≤4mm, image side surface effective diameter are A2b, 3mm≤A2b≤4mm;
The outer diameter of the third eyeglass is A3, and 4 mm≤A3≤5mm, object side effective diameter is A3a, 1 mm≤A3a
≤ 4mm;Image side surface effective diameter is A3b, 3mm≤A3b≤4mm;
The outer diameter of 4th eyeglass be A4,4 mm≤A4≤6mm, object side effective diameter be A4a, 1 mm≤
A4a ≤ 4mm;Image side surface effective diameter is A4b, 3mm≤A4b≤5mm;
The outer diameter of 5th eyeglass is A5, and 4 mm≤A5≤6mm, object side effective diameter is A5a, 1mm≤A5a
≤ 4mm;Image side surface effective diameter is A5b, 3mm≤A5b≤5mm.
It is designed above by lens dimension, under the premise of guaranteeing mobile lens image quality, it is excessive to be unlikely to volume,
In, the first eyeglass and the 5th eyeglass can effectively guarantee mobile lens under the premise of increasing field of view angle, mobile lens
Openings of sizes, is unlikely to more excessive than conventional lenses to control mobile phone screen and correspond to the opening of camera lens, accounts for screen ratio to reduce.
The height of the big field angle lens construction of above-mentioned biprism, first eyeglass and the 5th eyeglass is respectively C, 0 < C
≤ 1mm.Effectively to control total height of camera lens.
The right-angle side of the big field angle lens construction of above-mentioned biprism, first prism and the second prism is having a size of D, and 2
mm≤ D ≤ 5mm.Effectively to control total Gao He overall length of camera lens.
The big field angle lens construction of above-mentioned biprism, the focal length of first eyeglass are f1, -2 mm≤f1≤-
9mm.In order to distribute focal power, reduce camera lens overall length.
The big field angle lens construction of above-mentioned biprism, the focal length of the 5th eyeglass are f5, -2.2mm≤f5≤-
8mm.To reduce difference, the lump-sum analysis power of camera lens is improved.
The big field angle lens construction of above-mentioned biprism, the lens barrel is an integral structure or split type structure.
The beneficial effect of utility model is:
1, using the utility model, light by the first eyeglass it is incident after, by the first prismatic reflection, into lens set,
Again by being passed to mobile phone receiving end after the second prismatic reflection.The utility model is on the one hand by using prism in conjunction with lens
Mode, formed periscope structure form, thus to a certain extent keep even reduce camera lens whole height, thus may be used
To greatly reduce the thickness of mobile phone;On the other hand, the first eyeglass is placed on to the object side of the first prism, using the 5th eyeglass as
Last a piece of eyeglass is placed on the image side side of the second prism, achievees the purpose that the field angle for increasing camera lens, field angle can achieve
70 ° or more.
2, this structure qualification the second eyeglass and the first prism distance F, 0≤F≤1mm, and the diameter of diaphragm is
2.2-2.8mm, so that the overall length for limiting camera lens is unlikely to too long in the case where guaranteeing image quality.
3, when installing, the first eyeglass of this camera lens is installed close to mobile phone frame, is effectively reduced occupied by mobile phone screen camera lens
Space, so that promote comprehensive screen mobile phone accounts for screen ratio.
Embodiment 1
As shown in Figure 1, the big field angle lens construction of the biprism, by lens barrel 8, set on the first of 8 incident light line end of lens barrel
Eyeglass 1, is used to receive 2 emergent light of the first prism the first prism 2 for being used to receive 1 emergent ray of the first eyeglass in lens barrel 8
The lens set of line, the second prism 6 for receiving lens set emergent ray are set to lens barrel emergent light line end and for receiving second
5th eyeglass 7 of 6 emergent ray of prism forms.Wherein, the lens set is by the second eyeglass 3,4 and of third eyeglass that successively arrange
4th eyeglass 5 composition.The bevel angle of first prism 2 and the second prism 6 is 45 °, corresponding first prism of the lens barrel 8
2 and second the incline position of prism 6 be respectively equipped with 45 ° of positioning surfaces, first eyeglass 1 is parallel with the optical axis of the 5th eyeglass 7,
The optical axis of the lens set and the optical axis of the first eyeglass 1 and the 5th eyeglass 7 are respectively perpendicular.The object side of first eyeglass 1
Face and image side surface face type are respectively recessed, and the object side of the second eyeglass 3 and image side surface face type are respectively convex, the object side of third eyeglass 4
Face and image side surface face type are respectively recessed, and the object side of the 4th eyeglass 5 and image side surface face type are respectively convex, the object side of the 5th eyeglass 7
Face face type be it is recessed, image side surface face type be it is convex.
In the present embodiment, lens barrel 8 is an integral structure.Second eyeglass 3 is F, 0≤F at a distance from the first prism 2
≤ 1mm, the position between corresponding first prism of the lens barrel and the second eyeglass are equipped with cone cylinder shape light passing structure 9, the cone cylinder shape
The miner diameter end of light passing structure 9 forms diaphragm close to the first prism, and the diameter of the diaphragm is 2.2-2.8mm.The lens barrel enters
It penetrates light port and emergent ray port and is located at lens barrel two sides, the distance between incident ray port and emergent ray port
For I, 5mm≤I≤7mm.
The outer diameter of first eyeglass 1 is A1, A1=5,4mm, and object side effective diameter is A1a, A1a=4.8mm, image side
Face effective diameter is A1b, A1b=3.6mm;
The outer diameter of second eyeglass 3 be A2, A2=4.5mm, object side effective diameter be A2a, A2a=3.2mm, as
Side effective diameter be A2b, A2b=3.2mm,;
The outer diameter of the third eyeglass 4 is A3, and A3=5mm, object side effective diameter is A3a, A3a=3.1mm;Image side
Face effective diameter is A3b, A3b=3.3mm;
The outer diameter of 4th eyeglass 5 is A4, and A4=5.2mm, object side effective diameter is A4a, A4a=3.5mm;Image side
Face effective diameter is A4b, A4b=3.6mm;
The outer diameter of 5th eyeglass 7 is A5, and A5=6mm, object side effective diameter is A5a, A5a=3.8mm;Image side surface
Effective diameter is A5b, A5b=4mm.
The focal length of first eyeglass 1 is f1, f1=- 9mm.
The focal length of 5th eyeglass 7 is f5, f5=- 8mm.
The height of first eyeglass 1 and the 5th eyeglass 7 is respectively C, 0 < C≤1mm.
The right-angle side of first prism 2 and the second prism 6 is having a size of D, 2 mm≤D≤5mm.