CN102375219A

CN102375219A - Infrared night vision lens

Info

Publication number: CN102375219A
Application number: CN2011103761104A
Authority: CN
Inventors: 高海洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-23
Filing date: 2011-11-23
Publication date: 2012-03-14
Anticipated expiration: 2031-11-23
Also published as: CN102375219B

Abstract

The invention discloses an infrared night vision lens which comprises an optical lens and a front end cover thereof, and also comprises an infrared LED chip and a PCB (Printed Circuit Board), wherein the front end cover is provided with a PCB fixing groove, the PCB is fixed in the PCB fixing groove, and the infrared LED chip is arranged on the PCB by adopting an SMT (Surface Mounting Technology). Compared with the prior art, the invention realizes integration of a night vision lighting device and the lens, and has the advantage of small volume.

Description

A kind of infrared night vision camera lens

Technical field

The present invention relates to optical lens, especially relate to a kind of night vision camera lens.

Background technology

Go in the process of position in reversing; Because through automobile rearview mirror, the driver also can't clearly see the situation of the positive rear end of automobile, therefore; Automobile tail the object easy and rear end, parking stall bumps in the reversing process, especially in strange parking environment or in the parking environment of insufficient light.At automobile tail the camera head with night vision function being installed can address the above problem; But existing night vision cam is used for safety-security area mostly; Its camera lens and infrared light pipe adopt the split pattern, and infrared light pipe is fixed on the periphery of camera lens through additional stationary installation.Therefore the camera overall volume is bigger.This camera lens is installed on automobile tail, with the outward appearance that has a strong impact on automobile.

Summary of the invention

Technical matters to be solved by this invention is, a kind of night vision camera lens with infrared night vision function is provided, and it has the advantage of small size.

The present invention solves the problems of the technologies described above through following technological means:

A kind of infrared night vision camera lens; Comprise optical lens and front end end cover thereof, also comprise infrared LED chip and pcb board, said front end end cover is provided with the pcb board pickup groove; Said pcb board is fixed in the said pcb board pickup groove, and said infrared LED chip is arranged on the said pcb board through the SMT surface mounting technology.

Compared with prior art; Owing to adopt the led chip of un-encapsulated; Practice thrift installing space more than employing finished product LED lamp, and be fixed on the front end end cover of camera lens after directly being mounted on this led chip SMT on the pcb board, realize that camera lens and lighting device are integrated; Thereby make camera lens self have night vision function, have littler volume with camera lens/the traditional infrared camera of infrared LED lamp split setting is compared.Because the front end end cover rim space of camera lens is limited, therefore, technical scheme of the present invention is particularly useful for being installed in the scene that automobile tail etc. need not remote monitoring, can select small size, low power led chip, thereby reduce the realization difficulty of such scheme.

For simplified structure; The convenient installation; The annular groove of said pcb board pickup groove for being provided with around said optical lens; The structure of said pcb board is and the corresponding ring texture of said annular groove that the size of said annular groove and said pcb board is arranged so that said pcb board can be stuck between the madial wall and lateral wall of said annular groove.

Preferably, said camera lens also comprises said pcb board and led chip is encapsulated in the Waterproof glue line in the said annular groove, covers pcb board and led chip top, and this marine glue preferably adopts the epoxy resin organism.The Waterproof glue line of this preferred version need not led chip is carried out independently encapsulation process with waterproof action, led chip encapsulation effect and the fixedly effect of pcb board, also need not the pcb board fixed mechanism independently is set, and has simplified the production process of camera lens.Directly sealing on camera lens also has better waterproof ability.

Preferably, said pcb board pickup groove bottom is provided with the elastoplast layer, and said pcb board is fixed on the said elastoplast layer, and the external terminal of said pcb board passes said elastoplast layer and is connected with the circuit of front end end cover bottom.The elastoplast layer has waterproof effect, simultaneously because it has elasticity, thereby can play the reliability that is connected that external terminal with the outside line of pcb board are protected in damping.

Preferably, said pcb board is PCB sheet metal or the PCB glass plate with good heat conductive performance.

Preferably, also comprise the visible light led chip, said visible light led chip is arranged on the said pcb board through the SMT surface mounting technology.

Preferably, also comprise photoresistance, this photoresistance is arranged on the said pcb board through the SMT surface mounting technology.

Description of drawings

Fig. 1 is the vertical view of the camera lens of the specific embodiment of the invention;

Fig. 2 is the A-A line cut-open view of Fig. 1.

Embodiment

Contrast accompanying drawing and combination preferred embodiment are described further the present invention below.

Like Fig. 1, shown in 2, the infrared night vision camera lens of present embodiment mainly is made up of optical lens 1, front end end cover 2 and lighting device; Lighting device mainly is made up of infrared LED chip 31, visible light led chip 32, photoresistance 33, ring-type pcb board 34.

Front end end cover 2 is a hollow and annular, and its hollow bulb is used to hold camera lens 1; The edge of front end end cover 2 is provided with the ring-type pcb board 34 that pcb board pickup groove 21 is used for fixing lighting device; With the hollow bulb concentric annular groove 21 of the pickup groove 21 of present embodiment for being provided with around camera lens 1; The bottom of this annular groove 21 is provided with elastoplast layer 22, can regulate the irradiating angle of led chip as required through the thickness setting of groove 21 degree of depth settings and elastoplast layer 22.

Pcb board 34 preferred good PCB sheet metal or PCB glass plate, especially the aluminum base PCB sheet metals of heat conductivility that adopt of present embodiment.The structure of pcb board 34 is and annular groove 21 corresponding ring texturees that the size of annular groove 21 and pcb board 34 is arranged so that this pcb board 34 can be stuck between the madial wall and lateral wall of annular groove 21.During installation; With instrument pcb board 34 is snapped in the annular groove 21, make elastoplast layer 22 butt of pcb board and groove 21 bottoms, and make the external terminal of pcb board pass this elastoplast layer; Be connected with the circuit that is arranged on the front end end cover bottom, the installation of pcb board need not the additional fastening measure.

Infrared LED chip 31, visible light led chip 32, photoresistance 33 all are arranged on the said pcb board through the SMT mount technology, are connected with printed circuit on the pcb board.Infrared LED chip 31 is used to realize the night vision function of camera lens; Visible light led chip 32 is used for general lighting; Photoresistance 33 is used to respond to camera lens light intensity on every side; And induction structure is sent to the control circuit of infrared LED chip 31 and visible light led chip 32, with opening and closing according to two types of led chips of light intensity control.

The camera lens of present embodiment also comprises Waterproof glue line 35, is used for said pcb board and led chip are encapsulated in said annular groove 21, and for guaranteeing good light transmittance ability and water resistance, its material preferably adopts the epoxy resin organism.These Waterproof glue line 35 preferred vacuum casting techniques that adopt are formed at said pcb board 34 tops, cover infrared LED chip 31, visible light led chip 32 and photoresistance 33, thereby play the excellent waterproof effect.

Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For person of ordinary skill in the field of the present invention, do not breaking away under the prerequisite of the present invention design, can also make some being equal to substitute or obvious modification, and performance or purposes are identical, all should be regarded as belonging to protection scope of the present invention.

Claims

1. infrared night vision camera lens; Comprise optical lens and front end end cover thereof; It is characterized in that: also comprise infrared LED chip and pcb board; Said front end end cover is provided with the pcb board pickup groove, and said pcb board is fixed in the said pcb board pickup groove, and said infrared LED chip is arranged on the said pcb board through the SMT surface mounting technology.

2. infrared night vision camera lens according to claim 1; It is characterized in that: the annular groove of said pcb board pickup groove for being provided with around said optical lens; The structure of said pcb board is and the corresponding ring texture of said annular groove that the size of said annular groove and said pcb board is arranged so that said pcb board can be stuck between the madial wall and lateral wall of said annular groove.

3. infrared night vision camera lens according to claim 2 is characterized in that: also comprise said pcb board and led chip are encapsulated in the Waterproof glue line in the said annular groove.

4. according to the said infrared night vision camera lens of claim 4, it is characterized in that: said Waterproof glue line is the epoxy resin organism.

5. according to any described infrared night vision camera lens of claim 1-4; It is characterized in that: said pcb board pickup groove bottom is provided with the elastoplast layer; Said pcb board is fixed on the said elastoplast layer, and the external terminal of said pcb board passes said elastoplast layer and is connected with the circuit of front end end cover bottom.

6. according to any described infrared night vision camera lens of claim 1-4, it is characterized in that: said pcb board is PCB sheet metal or PCB glass plate.

7. according to any described infrared night vision camera lens of claim 1-4, it is characterized in that: also comprise the visible light led chip, said visible light led chip is arranged on the said pcb board through the SMT surface mounting technology.

8. infrared night vision camera lens according to claim 7 is characterized in that: also comprise photoresistance, this photoresistance is arranged on the said pcb board through the SMT surface mounting technology.