CN201628190U

CN201628190U - Light source

Info

Publication number: CN201628190U
Application number: CN2010203022353U
Authority: CN
Inventors: 武金阳; 唐佩忠
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-02-03
Filing date: 2010-02-03
Publication date: 2010-11-10
Anticipated expiration: 2020-02-03

Abstract

The utility model provides a light source on an image obtaining device which can be installed in a short and small space. The light source is fixed inside the image obtaining device. The light source comprises a lamp holder, a plurality of light-emitting elements arranged on the lamp holder and a support fixed onto the image obtaining device; the lamp holder is fixed onto the support; and the lamp holder is adjustable relatively to the angle of the support to change light casting directions of the plurality of light-emitting elements. The light source with simple structure is extremely convenient in disassembly, assembly and adjustment, and can heighten quality of images obtained by the image obtaining device.

Description

Light source

Technical field

The utility model relates to light source, relates in particular to a kind of light source that is used for image acquiring device.

Background technology

(printed circuit board PCB) produces, and to the operation of pcb board, as mounts, detects, and all is that the upper surface at pcb board carries out usually at printed circuit board (PCB).Therefore, corresponding image acquiring device also is arranged in the transmission track top of pcb board.But pcb board bottom surface (back side) also is provided with the image information that some are used for supplement production, for example bar code, numeral, serial number, date, specific pattern etc. usually.If discern these information, just need below the transmission track of pcb board, image acquiring device be set.Yet,, the normal image deriving means can't be installed because insufficient space, light bottom too dark and the normal image deriving means is oversize to the length of camera lens below the pcb board transmission track.Even install reluctantly, also can exist reference image identification too small, problems such as identification dead angle cause the information that gets access to not easy to identify.

The utility model content

In view of this, the utility model provides a kind of light source that is installed to the image acquiring device in a short and small space.

A kind of light source is fixed in an image acquiring device inside.Described light source comprises lamp socket, be arranged at a plurality of light-emitting components on the described lamp socket and be fixed in the support of described image acquiring device.Described lamp socket is fixed in described support, and described lamp socket is with respect to the adjustable angle joint of described support, to change the direction of described a plurality of light-emitting component throw lights.

Preferably, described lamp socket and described rack surface comprise black material.

Preferably, all offer two fixing holes on two of described lamp socket end faces.The upper surface that joins with described two end faces of described lamp socket offers a plurality of installing holes that are used to install described a plurality of light-emitting components.

Preferably, a side of described lamp socket offers the cable hole of the circuit that is used to hold described light-emitting component, and described side and described upper surface join, and described cable hole communicates with described installing hole.

Preferably, described two fixing holes are inequality to the distance of described upper surface.

Preferably, described lamp socket turns and is fixed in described support.

Preferably, offer a fixing hole and an arcuate socket on the sidewall of described support.Described arcuate socket is the center of circle with the fixing hole on the described support.Be respectively fixed to the fixing hole on the described support and the diverse location of described arcuate socket by two fixing holes,, change the direction of described a plurality of light-emitting component throw lights to realize being fixed in described support with described lamp socket is rotatable with described lamp socket.

Preferably, offer one first fixing hole and a plurality of second fixing hole on the sidewall of described support.Described a plurality of second fixing hole is that the center of circle distributes with described first fixing hole.Be respectively fixed to described first fixing hole and the second different fixing holes by two fixing holes,, change the direction of described a plurality of light-emitting component throw lights to regulate the angle of described lamp socket with respect to described support with described lamp socket.

Preferably, described light-emitting component is a light emitting diode.

Preferably, described support roughly takes the shape of the letter U.Described support comprises base plate and two the described sidewalls vertical with described base plate.Offer two elongated holes on the described base plate, be used for fixing described support to described image acquiring device.

Above-mentioned light-source structure is simple, and demolition, installation and adjusting are all very convenient, the quality of adjustable hi-vision image that deriving means obtains.

Description of drawings

Fig. 1 is the schematic diagram of the circuit board detecting system of a better embodiment, and this circuit board detecting system comprises an image acquiring device.

Fig. 2 is the part exploded view of image acquiring device among Fig. 1, and this image acquiring device comprises light source.

Fig. 3 is the another kind of part exploded view of image acquiring device.

Fig. 4 is the exploded view of light source in another embodiment.

Fig. 5 is the schematic diagram of the circuit board detecting system of another embodiment.

The main element symbol description

The specific embodiment

Fig. 1 is the schematic diagram of the circuit board detecting system 100 of a better embodiment.In the present embodiment, circuit board 200 be printed circuit board (PCB) (printed circuit board, PCB).This circuit board detecting system 100 comprises base 10, transmission track 30, drive unit 50 and image acquiring device 80 at least.Wherein, transmission track 30, drive unit 50 and image acquiring device 80 all are fixed in base 10.Drive unit 50 is used to drive transmission track 30.Drive unit 50 is a motor.Transmission track 30 is used for circuit board 200 is sent to another work station by a work station, to carry out mounting or detecting of element.Transmission track 30 can be any in the existing transmission track, the flat belt that it can comprise the rail bracket that is fixed in base 10, the synchronous band that drives with the synchromesh gear of drive unit 50 engagements, by synchromesh gear, driven by drive unit 50, guide roller, miniature line slideway etc.Image acquiring device 80 is fixed on the base 10 between the transmission track 30.When circuit board 200 during by regional directly over the image acquiring device 80, but the image information at image acquiring device 80 acquisition cuicuit plates 200 back sides.

As shown in Figure 2, among the embodiment, image acquiring device 80 comprises housing 81 and is fixed in camera lens module 83, image processor 85, light path redirector 87 and light source 89 in the housing 81.Housing 81 comprises roughly rectangular substrate 811 and is fastened on lid 813 on the substrate 811.For collection and the transmission that does not influence light, the inside and outside surface of housing 81 comprises black material, so that housing 81 inside and outside surfaces present black or blackout.

Camera lens module 83 is connected in image processor 85.Camera lens module 83 receives light, and passes to image processor 85 and carry out imaging.Camera lens module 83 can comprise tight shot and zoom lens.Image processor 85 can comprise that CCD (charge-coupleddevice) or CMOS (complementary metal oxide semiconductor) etc. carry out the sensitive chip of opto-electronic conversion, to be embodied as picture.Image processor 85 also can comprise analog-digital converter and image processor, is used to generate the discernible image of computer.In the present embodiment, the camera lens module 83 separable image processors 85 that are connected in, both constitute a combination camera, are fixed in substrate 8 11 one ends.Camera lens module 83 can be changed according to applied environment.Image processor 85 profiles are roughly rectangular.For the collection and the transmission that do not influence light, the outer surface of image processor 85 comprises black material, so that the outer surface of image processor 85 is black or blackout.Among other embodiment, image processor 85 and camera lens module 83 can be an integrated camera.

Light path redirector 87 is fixed in the other end of substrate 811, and is relative with camera lens module 83, and near substrate 811 edges.Light path redirector 87 comprises prism 871 and is fixed in the prism fixator 873 of substrate 811.As shown in Figure 3, prism 871 comprise incidence surface 8711, with the exiting surface 8713 of incidence surface 8711 vertical connections, and be connected the reflecting surface 8715 of incidence surface 8711 and exiting surface 8713.In the present embodiment, prism 871 is a total reflection prism, also promptly vertical light from incidence surface 8711 incidents, because its incidence angle (45 degree) is greater than the critical angle (42 degree) of prism, it all penetrates from exiting surface 8713 after reflecting surface 8715 reflections, vertically enters camera lens module 83 then.

Prism fixator 873 comprises first fixed block 8731, second fixed block 8732 and the 3rd fixed block 8733.First fixed block 8731 is the regular block that a cross section is the isosceles square substantially.Below for convenience of description, the face at two right-angle side places of isosceles square is called the right angle face of first fixed block 8731, and the face at the waist place of isosceles square is the inclined-plane 8734 of first fixed block 8731, remaining two side that face is first fixed block 8731.Wherein inclined-plane 8734 is used for pasting mutually to support prism 871 with the reflecting surface 8715 of prism 871, makes the incidence surface 8711 of prism 871 be parallel to substrate 811, and exiting surface 8713 is perpendicular to the optical axis (figure does not show) of substrate 811 and camera lens module 83.

Second fixed block 8732 is roughly L-shaped, and it comprises first stopper section 8735 and second stopper section 8736 vertical with first stopper section 8735.The bottom on the inclined-plane 8734 of first fixed block 8731 is fixed in first stopper section 8735.A side of second stopper section 8736 and first fixed block 8731 offsets.

The 3rd fixed block 8733 is also roughly L-shaped, and it comprises the 3rd stopper section 8737 and four stopper section 8738 vertical with the 3rd stopper section 8737.The top on the inclined-plane 8734 of first fixed block 8731 is fixed in the 3rd stopper section 8737.The another side of the 4th stopper section 8738 and first fixed block 8731 offsets.

Thus, first fixed block 8731, second fixed block 8732 cooperate bayonet socket (host cavity) that is used to accommodate prism 871 of formation with the 3rd fixed block 8733.After prism 871 placed in this bayonet socket, reflecting surface 8715 pasted mutually with inclined-plane 8734, and incidence surface 8711 and the 3rd fixed block 8733 offset, and the exiting surface 8713 and second fixed block 8732 offset.And incidence surface 8711 is parallel to substrate 811, and exiting surface 8713 is perpendicular to substrate 811 and be parallel to the incidence surface of camera lens module 83.Light path redirector 87 receives extraneous light by incidence surface 8711, makes described extraneous light turn to the back to pass through exiting surface 8713 perpendicular projection to camera lens module 83.For collection and the transmission that does not influence light, prism fixator 873 surfaces comprise black material, so that prism fixator 873 surfaces are black.Preferably, prism fixator 873 surfaces adopt the anodizing plating to be black.

Light source 89 is fixed on the substrate 811, and is adjacent with light path redirector 87, is used for the regional projection light directly over the incidence surface 8711 of light path redirector 87.In the present embodiment, light source 89 is promptly started working after circuit board detecting system 100 powers on, and closes up to circuit board detecting system 100.Light source 89 comprises two light emitting modules, is fixed in the both sides of light path redirector 87, so that the zone directly over the incidence surface 8711 is subjected to light even.Each light emitting module includes lamp socket 891, be arranged at a plurality of light-emitting components 892 on the lamp socket 891 and be fixed in support 893 on the substrate 811.

Lamp socket 891 is regular hexahedron substantially, its both ends of the surface that parallel 8911 all offer two fixing holes 894, its upper surface vertical with both ends of the surface 8912 offers a plurality of installing holes 895 that are used to install light-emitting component 892, and the side 8913 that itself and upper surface join offers a cable hole 896.Cable hole 896 is come round with installing hole 895, is used to hold the circuit of light-emitting component 892.Two fixing holes 894 are inequality to the distance of upper surface 8912.

Light-emitting component 892 is that (light emitting diode, LED), the light of its generation is white light to light emitting diode.Among other embodiment, can adopt the LED of the light that produces other colour systems according to actual conditions, for example red-light LED or blue-ray LED.

Support 893 roughly takes the shape of the letter U, and it comprises base plate 8931 and the two side 8932 vertical with base plate 8931.Offer two elongated holes on the base plate 8931, be used for fixing support 893 to substrate 811.Offer (but being not limited to) 5 fixing holes 8933 on each sidewall 8932.Four fixing holes in 5 fixing holes 8933 (are described for convenient, hereinafter referred to as second fixing hole) be that the center of circle distributes with another one fixing hole (first fixing hole), and second fixing hole equals distance between two fixing holes 894 on the lamp socket 891 to the distance of first fixing hole.Two fixing holes 894 of lamp socket 891 are fixed to first fixing hole and the second different fixing holes, the direction that can regulate light-emitting component 892 throw lights on the sidewall 8932 by fixture (as bolt, screw etc.) respectively.

In another embodiment, as shown in Figure 4, offering a fixing hole 8934 and one on each sidewall 8932 is the arcuate socket 8935 in the center of circle with fixing hole 8934.Two fixing holes 894 of lamp socket 891 are fixed to the diverse location of fixing hole 8934 and arcuate socket 8935 respectively by fixture, can be with the lamp socket 89 1 rotatable supports 893 that are fixed in, to change the direction of light-emitting component 892 throw lights.

Please referring again to Fig. 2 and Fig. 3, lid 813 comprises four sidewalls 8132 that top board 8131 reaches perpendicular to top board 8131.Position corresponding to light path redirector 87 and light source 89 on the top board 8131 offers opening 8133.Opening 8133 is a rectangle, and among other embodiment, opening 8133 can be circle, triangle etc.Offer a plurality of radiating grooves 8134 on two sidewalls 8132 relative, also offer cable hole 8135 on one in these two sidewalls 8132 with the both sides of image processor 85.The circuit of the circuit of light source 89 and image processor 85 can stretch out image acquiring device 80 from cable hole 8135.

When image acquiring device 80 is fixed in base 10, the incidence surface 8711 of light path redirector 87 should be parallel with circuit board 200 back sides on placing transmission track 30, the light that light source 89 sends is from opening 8133 ejaculations and answer specific region, covering board 200 back sides, but this specific region can be printed with identification icon information such as bar code, numeral, serial number, date.When circuit board 200 process image acquiring devices 80 tops, the light that this specific region reflection source 89 sends, light reflected can vertically be injected the incidence surface 8711 of light path redirector 87.This light of injecting turns to the back vertically to inject camera lens module 83 by exiting surface 8713 at reflecting surface 8715, thus but the distinct image of the specific region at image processor 85 generative circuit plates 200 back sides.Understandable, this image is transferred to a treatment system via circuit, and this treatment system is obtained image informations such as above-mentioned font code, numeral, serial number, date from this image.

Owing to adopted light path redirector 87, the whole height of image acquiring device 80 is identical with the thickness (top board 8131 of lid 813 is to the distance of substrate 811) of image processor 85, therefore can be installed to a short and small space.Owing to adopt light source 89 to illuminate circuit board 200 back sides, therefore can get access to circuit board 200 back side distinct image again.In addition, by moving and rotary shell 81, make the different position, incidence surface 8711 face circuit board, 200 back sides of light path redirector 87, exiting surface 8713 can reduce the dead angle of finding a view towards different directions.Also can be according to the prism 871 and the camera lens module 83 of the different choice different size of viewfinder range, install and debugging all very convenient.

In other embodiments, can be according to a plurality of image acquiring devices 80 of how much being provided with of the image that will obtain.As shown in Figure 5, compare, comprise two image acquiring devices 80,80 ' that structure is identical on the base 10 of circuit board detecting system 300 with circuit board detecting system 100.These two image acquiring devices 80,80 ' are respectively applied for the middle part at acquisition cuicuit plate 200 back sides and the image of lateral edges.Wherein, the direction of transfer vertical (optical axis of the camera lens module of image acquiring device 80 is parallel with the direction of transfer of circuit board 200) of the optical axis of the camera lens module of image acquiring device 80 ' (figure do not show) and circuit board 200, light path redirector is provided with near transmission track 30, therefore image that can acquisition cuicuit plate 200 edges, thus realize that no dead angle finds a view.

Those skilled in the art will be appreciated that; above embodiment only is to be used for illustrating the utility model; and be not to be used as qualification of the present utility model; as long as within connotation scope of the present utility model, appropriate change and variation that above embodiment is done all drop within the claimed scope of the utility model.

Claims

1. light source, it is characterized in that, described light source is fixed in an image acquiring device inside, described light source comprises lamp socket, be arranged at a plurality of light-emitting components on the described lamp socket and be fixed in the support of described image acquiring device, described lamp socket is fixed in described support, described lamp socket is with respect to the adjustable angle joint of described support, to change the direction of described a plurality of light-emitting component throw lights.

2. light source as claimed in claim 1 is characterized in that, described lamp socket and described rack surface comprise black material.

3. light source as claimed in claim 1 is characterized in that, all offers two fixing holes on two end faces of described lamp socket, and the upper surface that joins with described two end faces offers a plurality of installing holes that are used to install described a plurality of light-emitting components.

4. light source as claimed in claim 3 is characterized in that, a side of described lamp socket offers the cable hole of the circuit that is used to hold described light-emitting component, and described side and described upper surface join, and described cable hole communicates with described installing hole.

5. light source as claimed in claim 3 is characterized in that, described two fixing holes are inequality to the distance of described upper surface.

6. light source as claimed in claim 3 is characterized in that, described lamp socket turns and is fixed in described support.

7. light source as claimed in claim 6, it is characterized in that, offer a fixing hole and an arcuate socket on the sidewall of described support, described arcuate socket is the center of circle with the fixing hole on the described support, be respectively fixed to the fixing hole on the described support and the diverse location of described arcuate socket by two fixing holes with described lamp socket, to realize being fixed in described support with described lamp socket is rotatable, change the direction of described a plurality of light-emitting component throw lights.

8. light source as claimed in claim 1, it is characterized in that, offer one first fixing hole and a plurality of second fixing hole on the sidewall of described support, described a plurality of second fixing hole is that the center of circle distributes with described first fixing hole, be respectively fixed to described first fixing hole and the second different fixing holes by two fixing holes with described lamp socket, to regulate the angle of described lamp socket, change the direction of described a plurality of light-emitting component throw lights with respect to described support.

9. light source as claimed in claim 1 is characterized in that, described light-emitting component is a light emitting diode.

10. as claim 7 or 8 described light sources, it is characterized in that described support roughly takes the shape of the letter U, described support comprises base plate and two the described sidewalls vertical with described base plate, offer two elongated holes on the described base plate, be used for fixing described support to described image acquiring device.