Dust-proof camera lens module equipped with double optical filtering switch
Technical field
Security monitoring technology is the utility model is related to, is especially equipped with the dust-proof camera lens module of double optical filtering switch.
Background technology
Under normal conditions, camera lens module includes camera lens, microscope base, double optical-filter switchers, drive circuit and sensitive chip.Mirror
The main function of head is exactly to filter off black light, allows visible ray to enter, and project on sensor.
The double optical-filter switchers of IR-CUT be by:Optical filter+power section is formed.The original of the double optical-filter switchers of IR-CUT
Reason is by one piece of circuit control panel and switch, and when the light on daytime is abundant, circuit control panel, which is driven in switch, to be switched
Work to cutoff filter, switch restores true color, and when night insufficient light, cutoff filter is automatic
Remove, full spectrum light glass is started to work, and can be sensed the auxiliary light of evening infrared lamp, switch is made full use of all light
Line, so that substantially increasing the low of thermal camera shines performance, whole picture clear and natural.
The optical filter of double optical filters needs to switch, and is necessarily required to leave the space for smooth movement in handoff procedure, ash
Dirt can enter module internal by this space, and existing IRCUT designs such on the market are mostly used in safety monitoring, not to dust-proof
Considered and designed, switch switches bottom device inner cavity during use can produce moveable dust, be easy to cause
Moveable dust falls on sensitive chip.
Utility model content
The purpose of this utility model is to provide the dust-proof camera lens module equipped with double optical filtering switch, and dust enters camera lens module
Afterwards, it is secured on double-side dustproof viscose glue, avoids falling on sensitive chip, causes image bad.It is new based on the purpose, this practicality
The technical solution that type uses is as follows:
Dust-proof camera lens module equipped with double optical filtering switch, including double optical filtering switch, drive circuit and sensitive chips, institute
Stating drive circuit includes FPC, and sensitive chip is arranged on FPC, and double optical filtering switch include switch upper cover, switch bottom
Seat, the light hole on switch base, optical filter, the filter plate carrier of accommodating optical filter, and power set;It is described photosensitive
Chip is surrounded by double-side dustproof viscose glue.Dust-proof viscose glue, which is primarily adapted for use in, to be placed with the inlet of clean room and buffering area
Between, it can effectively sticky removing dust, influence of the dust to clean environment quality is reduced to greatest extent, so as to reach simple dedusting
Effect, keep clean environment, use simplicity.Double-side dustproof viscose glue is arranged at dust inlet port, can effectively prevent dust
Diffusion, after dust enters camera lens module from light hole or from the gap of switch base, is secured at double-side dustproof viscose glue
On, prevent dust to spread, so as to avoid falling on sensitive chip.
Further, the double-side dustproof paste adhesive is on FPC, and hollow out exposes photosensitive core among double-side dustproof viscose glue
Piece.Sensitive chip is fit directly on FPC, and double-side dustproof is glued on the FPC for sticking on sensitive chip surrounding, is formed and protected together
Wall, when dust is close to sensitive chip, is adsorbed by two-sided protecting wall.
Further, for the double-side dustproof paste adhesive in the inner cavity top of switch base, middle hollow out exposes thang-kng
Hole.There is certain interval between light hole and switch base intracavity on switch base, dust is filtering from the gap into rear
When piece switches, it can fall on sensitive chip, switch base intracavity pastes double-side dustproof glue, and dust enters switch base
Behind inner cavity, it is secured on double-side dustproof viscose glue, avoids and fall on sensitive chip.
Further, the inner cavity of the switch base is equipped with the first groove, and double-side dustproof paste adhesive is described first
In groove.Groove plays positioning action to stickup of the double-side dustproof viscose glue on base, prevents that double-side dustproof paste adhesive is askew, leads to
Expose the double-side dustproof viscose glue in via, it is photosensitive to influence sensitive chip, causes to be imaged bad.
Further, the inner cavity of the switch base is equipped with reinforcing rib, and the reinforcing rib forms a square groove,
Its center and the center of light hole are located on same center line, and the left and right sides of the reinforcing rib is equipped with and reinforcing rib is integrated
Pillar, reinforcing rib and the switch base are integrally formed.The development of technology causes electronic product to develop to frivolous direction, equally
Material, switch base wall thickness is thinner, its intensity is lower, and intensity is low, and the easy stress destruction of product or deformation, can influence light
Thread path, influences imaging effect after deformation, in the case where not increasing wall thickness, sets reinforcing rib, adds the strong of whole product
Degree, ensures that the stability of imaging.Pillar and reinforcing rib integrated setting, on the one hand play and strengthen product rigidity, another
Aspect, convenient formation.
Further, screw thread is equipped with the pillar or is melted nut.It is threaded in pillar, passes through bolt or spiral shell
Nail so that switch base is effectively fixedly connected with upper cover.
Further, the inner cavity of the switch base be equipped with outwardly convex the second groove, the switch upper cover with
Corresponding 3rd groove, a chamber resettling is formed between two grooves.It is respectively provided with switch base and switch on lid
It is fluted, the intensity of switch base and upper cover is added, while the chamber resettling formed is easy to placement power set so that cut
Function division is obvious in parallel operation base, ease of assembly.
Further, the optical filter includes full impregnated spectral filtering glass and IR filter glass.Night utilizes full impregnated spectrum
Filter glass can sense the auxiliary light of evening infrared lamp, switch is made full use of all light, so as to substantially increase red
The low of outer video camera shines performance, makes whole picture clear and natural.When daytime, light was abundant, IR filter glass IR cut filters
Piece.
Further, the filter plate carrier is equipped with two optical filter accommodation chambers and strengthens groove.Filter plate carrier exists
Moved under the driving of power set, complete the switching of optical filter, optical filter chamber resettling is arranged on one section of filter plate carrier, separately
One end filter plate carrier is rotated as center of rotation, and stress is easily deformed, and sets groove, neither influences assembling, and can increase filter
The intensity of mating plate carrier, avoids filter plate carrier deformation from causing the assembling of optical filter not in place, causes to be imaged bad.
The beneficial effect that the utility model obtains is:(1) double-side dustproof is sticked on the inner cavity of filter plate carrier and FPC
Glue, forms twice protecting wall to sensitive chip, into the dust of camera lens module, is secured on double-side dustproof viscose glue, is formed anti-
Dirt acts on;(2) manufacturing process is simple and convenient, and it is convenient that double-side dustproof viscose glue is replaced, easy to repair and maintenance.
Brief description of the drawings
Fig. 1 sticks on two-sided binding dust glue schematic diagram for the utility model switch base intracavity;
Fig. 2 sticks on two-sided binding dust glue schematic diagram for sensitive chip side on the utility model FPC plates;
Fig. 3 sticks on two-sided binding dust glue for utility model switch and splits schematic diagram;
In figure, 1-FPC, 2- sensitive chips, 31- switch upper covers, the 3rd grooves of 311-, 32- switch bases, 321- leads to
Unthreaded hole, 322- reinforcing ribs, 323- pillars, 324- nuts, the first grooves of 325-, the second grooves of 326-, 33- optical filters, 331- are complete
Printing opacity spectrum filter glass, 332-IR filter glass, 34- filter plate carriers, 341- optical filter accommodation chambers, 342- strengthen groove, 4-
Double-side dustproof viscose glue.
Embodiment
The utility model is described in further detail presently in connection with attached drawing.
Embodiment 1
As shown in Figs. 1-3, the dust-proof camera lens module equipped with double optical filtering switch, including double optical filtering switch, drive circuit
And sensitive chip, drive circuit include FPC1, sensitive chip 2 is arranged on FPC1, and double optical filtering switch include switch upper cover
31, switch base 32, the light hole 321 on switch base 32, optical filter 33, the optical filter load of accommodating optical filter 33
Body 34, and power set;Sensitive chip 2 is surrounded by double-side dustproof viscose glue 4, double-side dustproof viscose glue 4 be pasted onto on FPC1 and
The inner cavity top of switch base 32, middle hollow out expose light hole 321.
When pasting double-side dustproof viscose glue, the inner cavity of switch base 321 is equipped with groove 325, and double-side dustproof viscose glue 4 is pasted
In the groove 325.
Reinforcing rib 322 is equipped with the inner cavity of switch base 32, reinforcing rib 322 forms a square groove, its center
It is located at the center of light hole 321 on same center line, the left and right sides of reinforcing rib 322 is equipped with and the integrated pillar of reinforcing rib
323, screw thread is equipped with pillar 323 or molten has nut 324.Reinforcing rib 322 and switch base 32 are integrally formed.
The inner cavity of switch base 2 is equipped with the first groove 325 of outwardly convex, and the switch upper cover 31 is corresponding
Second groove 311, forms a chamber resettling between two grooves.Power set 5 are placed in chamber resettling.
Filter plate carrier 34 is equipped with two optical filter accommodation chambers 341 and groove 342,331 He of full impregnated spectral filtering glass
IR filter glass 332 is individually positioned in two optical filter accommodation chambers 341.
In the present embodiment, double-side dustproof adhesive plaster FPC1 and switch base 32 interior intracavitary, during stickup, dust-proof viscose glue
It cannot be pasted onto on sensitive chip.After dust enters 32 inner cavity of switch base from the edge of light hole 321, inner cavity is secured at
On the double-side dustproof viscose glue 4 at top, after the unstuck dust in part enters control circuit in the gap of optical filter base, quilt
It is pasted onto on the double-side dustproof viscose glue 4 on FPC.
Using the above-mentioned desirable embodiment according to the utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right
Property scope.