The content of the invention
It is an object of the invention to provide a kind of prism systems, solve the problems, such as that prism system is bulky.
For achieving the above object, the present invention provides prism system, and including prism, the prism has prism and divides
Body of light, the light splitting body allow incident visible light to be transmitted through and by infrared reflection;It is set in the outgoing smooth surface of the prism
The accommodating chamber of oriented prism inner recess is equipped with optical mirror slip in the accommodating chamber.
According to an aspect of the present invention, the prism is monomer right-angle prismatic column, and triangular prism inclined-plane enters for light
Face is penetrated, the face vertical with incident ray is visible light-emitting face, and the accommodating chamber is perpendicular to the visible light-emitting face to described
It is extended vertically in prism, and accommodating chamber bottom setting alternate with the light splitting body.
According to an aspect of the present invention, the prism is made of the first prism and the second prism, and described first
Prism and second prism are respectively square triangular prism, and the inclined-plane of first prism and the second prism is mutual
It is oppositely arranged, for the light splitting body between first prism and the inclined-plane of the second prism, the light splitting body reflection is red
Outer light simultaneously allows visible transmission, and the face vertical with the visible ray from light splitting body is emitted for visible ray on second prism
Face, the accommodating chamber is extended vertically perpendicular to the visible light-emitting face into second prism, and the accommodating chamber bottom
Portion's setting alternate with the light splitting body.
According to an aspect of the present invention, the accommodating chamber is hollow stepped cylindrical body, and the diameter of each cylinder is from institute
Visible light-emitting face is stated towards reducing successively inside prism, the center line of the cylinder is incident through the prism light
The geometrically symmetric center in face or the accommodating chamber are hollow circular cylinder, and the center line of the hollow circular cylinder passes through the prism
The geometrically symmetric center of body plane of light incidence.
According to an aspect of the present invention, the optical mirror slip is made of 5 aspherical lens, realizes casual labourer within 3mm
Make distance, back focal length is imaged within 3mm.
According to an aspect of the present invention, the prism is equipped with anti-reflection film.
According to an aspect of the present invention, the light splitting body is light splitting plated film, and the light splitting plated film allows visible ray to pass through
And reflect infrared light, the wave-length coverage of the visible ray is 410~650nm, the wave-length coverage of the infrared light for 850 ±
20nm。
According to an aspect of the present invention, the plated film is made of optical interference film group.
A scheme according to the present invention, by setting accommodating chamber on prism, and installs optical mirror slip in accommodating chamber,
So as to rationally make use of the inner space of prism, the volume of the prism system of the present invention is reduced.Therefore, rib using the present invention
The volume of the camera module of mirror system is efficiently reduced.Meanwhile by the present invention prism system can effectively change prism with
The distance between sensitive chip, so as to be conducive to adjust the imaging size of the camera module of prism system using the present invention.
A scheme according to the present invention, prism carry out light-splitting processing by being divided body to the light Jing Guo camera lens incidence,
So that visible ray and infrared light are transmitted by different directions, it ensure that the prism system of the present invention in visible ray and infrared light
It is mutual indepedent in transmission process, interfering with each other for visible ray and infrared light is avoided, ensure that the clear of imaging.Be divided body by
Optical interference film group is formed.By above-mentioned setting, reduce the loss by being divided body glazed thread, ensure that the present invention into
As clear.By above-mentioned setting, it ensure that the visible ray that wave-length coverage is 410~650nm can penetrate light splitting body, and it is visible
The transmitance of light reaches more than 90%, and the prism system for further ensuring the present invention exports enough visible rays, is conducive to carry
The image quality of high sensitive chip.Meanwhile by above-mentioned setting, it ensure that the infrared light that wave-length coverage is 850 ± 20nm can
The body that is split reflects, and the reflectivity of infrared light reaches more than 90%, further ensures the prism system output of the present invention
Enough infrared lights are conducive to improve the image quality of sensitive chip.
Specific embodiment
It, below will be to embodiment in order to illustrate more clearly of embodiment of the present invention or technical solution of the prior art
Needed in attached drawing be briefly described.It should be evident that the accompanying drawings in the following description is only some of the present invention
Embodiment, for those of ordinary skills, without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
When being described for embodiments of the present invention, term " longitudinal direction ", " transverse direction ", " on ", " under ", " preceding ",
" rear ", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", the orientation expressed by " outer " or position relationship are based on phase
Orientation shown in the drawings or position relationship are closed, be for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore above-mentioned term cannot
It is interpreted as limitation of the present invention.
The present invention is described in detail with reference to the accompanying drawings and detailed description, embodiment cannot go to live in the household of one's in-laws on getting married one by one herein
It states, but therefore embodiments of the present invention are not defined in implementation below.
As shown in Figure 1, a kind of embodiment according to the present invention, prism system of the invention includes prism 1.In this implementation
In mode, prism 1 has prism 11 and light splitting body 12.In the present embodiment, the light received by camera lens 1 is sent to rib
On the light splitting body 12 of mirror 1, light splitting body 12 allows incident visible light to be transmitted through and by infrared reflection.
As shown in Figure 1, a kind of embodiment according to the present invention, prism 11 is monomer right-angle prismatic column.In this implementation
In mode, the triangular prism inclined-plane of prism 11 is plane of light incidence 111, and the face vertical with incident ray is visible light-emitting face
112.Light splitting body 12 be located on the plane of light incidence 111 of prism 11, the body 12 that is split reflection infrared ray projecting direction and
Prism 11 is perpendicular parallel to the face of incident light.In the present embodiment, light reaches light splitting body 12, it is seen that incident light passes through
It is divided body 12 and reaches plane of light incidence 111, visible light-emitting face 112 is reached by the visible ray of plane of light incidence 111, and is passed through
It can be seen that the visible ray of light-emitting face 112 is projected onto the external world.The infrared light body 12 that is directly split reflects, so as to which infrared light be avoided to lead to
It crosses and reaches visible light-emitting face 112, realize being sufficiently separated for visible ray and infrared light.
As shown in Figure 1, a kind of embodiment according to the present invention, the visible light-emitting face 112 of prism 11 be equipped with to
The accommodating chamber 113 of 11 inner recess of prism in the present embodiment, is equipped with optical mirror slip 1131 in accommodating chamber 113.Accommodating chamber
113 extend vertically perpendicular to visible light-emitting face 112 into prism 11, and body 12 is alternate sets with light splitting for 113 bottom of accommodating chamber
It puts, i.e., it is spaced between the bottom of accommodating chamber 113 and plane of light incidence 111.
As shown in Fig. 2, another embodiment according to the present invention, prism 11 is by the first prism 11a and the second rib
Mirror body 11b is formed.In the present embodiment, the first prism 11a and the second prism 11b is respectively square triangular prism, the
The inclined-plane of one prism 11a and the second prism 11b are mutually oppositely arranged, and light splitting body 12 is located at the first prism 11a and second
Between the inclined-plane of prism 11b.In the present embodiment, body 12 is divided to reflect infrared light and allow visible transmission, the second rib
The face vertical with the visible ray from light splitting body 12 is visible light-emitting face 112 on mirror body 11b.With entering on first prism 11a
The vertical face of light is penetrated as plane of light incidence 111, the infrared ray reflected on the first prism 11a with light splitting body 12 is perpendicular and makes
Infrared ray by face be infrared light-emitting face 214.In the present embodiment, light reaches plane of light incidence 111, passes through light
The light of the plane of incidence 111 is transferred on light splitting body 12, it is seen that and incident light reaches visible light-emitting face 112 by being divided body 12,
The external world can be projected by the visible ray of visible light-emitting face 112.The infrared ray reflected by being divided body 12 reaches infrared
Light-emitting face 214 is projected the external world by the infrared ray of infrared light-emitting face 214.
As shown in Fig. 2, another embodiment according to the present invention, on the visible light-emitting face 112 of the second prism 11b
Equipped with the accommodating chamber 113 to the second prism 11b inner recess, in the present embodiment, optical mirror slip is equipped in accommodating chamber 113
1131.Accommodating chamber 113 is extended vertically perpendicular to visible light-emitting face 112 into the second prism 11b, and 113 bottom of accommodating chamber
It is with being divided 12 alternate setting of body, i.e., spaced between the bottom of accommodating chamber 113 and the inclined-plane of the second prism 11b.
As shown in Figure 1, a kind of embodiment according to the present invention, accommodating chamber 113 is hollow circular cylinder.In present embodiment
In, accommodating chamber 113 is the constant hollow circuit cylinder cavity of diameter.The light of the center line of accommodating chamber 113 through prism 11 is incident
The geometrically symmetric center in face 111.By above-mentioned setting, ensure the optical axis and prism of the optical mirror slip 1131 in accommodating chamber 113
The geometrically symmetric center of 11 planes of light incidence 111 overlaps, and so as to avoid the deflection of extraneous visible ray is projected onto, ensures sense
Optical chip being capable of blur-free imaging.
Another embodiment according to the present invention, accommodating chamber 113 are hollow stepped cylindrical body.In present embodiment
In, the diameter of each cylinder in the stairstepping cavity of accommodating chamber 113 from visible light-emitting face 112 towards prism 11 inside according to
Secondary diminution.The center line of accommodating chamber 113 passes through the geometrically symmetric center of 11 plane of light incidence 111 of prism.By above-mentioned setting,
Ensure that the optical axis of the optical mirror slip 1131 in accommodating chamber 113 is overlapped with the geometrically symmetric center of 11 plane of light incidence 111 of prism,
So as to avoid the deflection for being projected onto extraneous visible ray, ensure that sensitive chip being capable of blur-free imaging.
A kind of embodiment according to the present invention, optical mirror slip 1131 are made of 5 aspherical lens, are realized within 3mm
Short operating distance, back focal length is imaged within 3mm.
A kind of embodiment according to the present invention, light splitting body 12 are light splitting plated film.In the present embodiment, light splitting plated film is permitted
Perhaps visible ray by and reflect infrared light.Light splitting plated film allow by visible ray wave-length coverage be 410~650nm.Light splitting
Plated film allow by infrared light wave-length coverage be 850 ± 20nm.In the present embodiment, it is thin by optical interference to be divided body 12
Film group is formed, and at least two layers of optical interference film in optical interference film group can be three layers, four layers or more.
As shown in Figure 1, a kind of embodiment according to the present invention, prism 11 is equipped with anti-reflection film.It is anti-reflection by setting
Film is the transmitance higher of prism 11, so as to reduce the loss that light is transmitted in prism system, is conducive to export enough
Light intensity.
According to the present invention, prism 1 carries out light-splitting processing by being divided body 12 to the light by 1 incidence of camera lens, so that
Visible ray and infrared light are transmitted by different directions, ensure that the prism system of the present invention is transmitted across in visible ray and infrared light
It is mutual indepedent in journey, interfering with each other for visible ray and infrared light is avoided, ensure that the clear of imaging.Body 12 is divided by optics
Interference thin film group is formed.By above-mentioned setting, the loss by being divided 12 glazed thread of body is reduced, ensure that the imaging of the present invention
Clearly.By above-mentioned setting, it ensure that the visible ray that wave-length coverage is 410~650nm can penetrate light splitting body 12, and it is visible
The transmitance of light reaches more than 90%, and the prism system for further ensuring the present invention exports enough visible rays, is conducive to carry
The image quality of high sensitive chip.Meanwhile by above-mentioned setting, it ensure that the infrared light that wave-length coverage is 850 ± 20nm can
The body 12 that is split reflects, and the reflectivity of infrared light reaches more than 90%, and the prism system for further ensuring the present invention is defeated
Go out enough infrared lights, be conducive to improve the image quality of sensitive chip.
According to the present invention, by setting accommodating chamber 113 on prism 1, and optical mirror slip is installed in accommodating chamber 113
1131, so as to rationally make use of the inner space of prism 1, reduce the volume of the prism system of the present invention.Therefore, using this hair
The volume of the camera module of bright prism system is efficiently reduced.Meanwhile can effectively it be changed by the prism system of the present invention
The distance between prism 1 and sensitive chip, so as to be conducive to adjust the imaging of the camera module of prism system using the present invention
Size.
The above is only enumerating for the concrete scheme of the present invention, should for the equipment and structure of wherein not detailed description
When being interpreted as that the existing common apparatus in this field and universal method is taken to be practiced.
The foregoing is merely the schemes of the present invention, are not intended to limit the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.