CN204203494U - Light projection head, optical sensor - Google Patents
Light projection head, optical sensor Download PDFInfo
- Publication number
- CN204203494U CN204203494U CN201420606736.9U CN201420606736U CN204203494U CN 204203494 U CN204203494 U CN 204203494U CN 201420606736 U CN201420606736 U CN 201420606736U CN 204203494 U CN204203494 U CN 204203494U
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- light
- reflecting surface
- projection head
- projecting portion
- head
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
Abstract
The utility model provides light to project head and optical sensor, suppresses from light projection head outgoing outer ring light.This light projection head comprises: light-projecting portion, and it exports light; And optics, it is configured in the front of this light-projecting portion on the outbound course of described light-projecting portion, and there is multiple reflecting surface and stage portion, described multiple reflecting surface is arranged in coaxially along described outbound course, described each reflecting surface is in the tubular shape that more opening diameter more increases away from described light-projecting portion, the rear end being positioned at the reflecting surface of front side is compared with the front end of the reflecting surface being positioned at rear side, and opening diameter is little, and is incorporated into via described stage portion the front end that this is positioned at the reflecting surface of rear side.
Description
Technical field
The utility model relates to light projection head and optical sensor.
Background technology
In the past, there will be a known and comprised light projection head and light-receiving head, and carry out optical sensor with presence or absence of detection assay object by receiving with light Receiver from the light of light projection head outgoing.Light projection head has the opticses such as such as lens, and by the light of the optical axis along this optics towards surveyed area outgoing.But, light projection head in, textural, not only outgoing is along the light of optical axis, also exist by be diffused into side from optical axis light, i.e. so-called outer ring light outgoing situation.Like this, such as likely outer ring light is received by light-receiving head, produces error detection to the presence or absence of measuring object.Therefore, in the past, the non-spherical lens that there will be a known by being provided with diaphragm in the configuration of the end of optical fiber weakens the technology (such as, patent documentation 1) of outer ring light.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 7-20351 publication
Utility model content
The technical matters of the utility model for solving
But, even above-mentioned formation in the past, owing to also can spread in non-spherical lens from the light of the light projector parts outgoing such as optical fiber, and received by light-receiving head, therefore can not weaken outer ring light fully.
In this manual, the technology that can suppress from light projection head outgoing outer ring light is disclosed.
For the technical scheme of dealing with problems
Light projection head disclosed in this instructions comprises: light-projecting portion, and it exports light; And optics, it is configured in the front of this light-projecting portion on the outbound course of above-mentioned light-projecting portion, and there is multiple reflecting surface and stage portion, above-mentioned multiple reflecting surface is arranged in coaxially along above-mentioned outbound course, above-mentioned each reflecting surface is in the tubular shape that more opening diameter more increases away from above-mentioned light-projecting portion, the rear end being positioned at the reflecting surface of front side is compared with the front end of the reflecting surface being positioned at rear side, and opening diameter is little, and is incorporated into via above-mentioned stage portion the front end that this is positioned at the reflecting surface of rear side.
This light projection head comprises optics, and this optics is configured in the front of this light-projecting portion on the outbound course of light-projecting portion, and has multiple reflecting surface and stage portion.Multiple reflectings surface of this optics are arranged in coaxially along outbound course, and each reflecting surface is in the tubular shape that more opening diameter more increases away from light-projecting portion.Further, the rear end being positioned at the reflecting surface of front side is compared with the front end of the reflecting surface being positioned at rear side, and opening diameter is little, and is incorporated into via stage portion the front end that this is positioned at the reflecting surface of rear side.Therefore, stage portion has the tubular shape that more opening diameter more reduces away from light-projecting portion.Thereby, it is possible to suppress, from light-projecting portion outgoing diffusely and being advanced along outbound course by the light reflected in stage portion from outbound course to side, outer ring light can be weakened.
Disclosed in this instructions light projection head also can be, above-mentioned be positioned at front side reflecting surface with above-mentioned be positioned at rear side reflecting surface compared with, little relative to the angle of inclination of above-mentioned outbound course.This light projection head be positioned at the front of outbound course, reflecting surface be positioned at rear side reflecting surface compared with, little relative to the angle of inclination of outbound course, therefore, it is possible to make to be become the light along optical axis at each reflecting part by the light reflected.
Light projection head disclosed in this instructions also can be that above-mentioned optics has light collecting part, and this light collecting part is configured in the front of above-mentioned multiple reflecting surface and stage portion, and by the light that exports from above-mentioned light-projecting portion to the direction optically focused orthogonal with above-mentioned outbound course.Because the optics of this light projection head has light collecting part, therefore, by the light optically focused will exported from light-projecting portion, outer ring light can be weakened.
Light projection head disclosed in this instructions also can be that above-mentioned optics is provided with maintaining part, and this maintaining part is configured in the rear of above-mentioned multiple reflecting surface and stage portion, and keeps the leading section of above-mentioned light-projecting portion.Because this light projection head is provided with the maintaining part kept light-projecting portion on optics, therefore, it is possible to suppress the relative position of light guide section and light projector parts to change, the change due to relative position can be suppressed to cause producing outer ring light.
Light projection head disclosed in this instructions also can be, above-mentioned optics is the light guide member guided to above-mentioned outbound course by the light exported from above-mentioned light-projecting portion, and above-mentioned multiple reflecting surface is the side on the direction orthogonal with above-mentioned outbound course of above-mentioned light guide member.Because the optics of this light projection head is made up of light guide member, and multiple reflecting surface is the side of this light guide member, therefore, is easy to be formed the optics with multiple reflecting surface and stage portion.
Light projection head disclosed in this instructions also can be, described light projection head comprises shading housing, and this shading housing keeps above-mentioned light-projecting portion and above-mentioned optics, and has light-proofness.Because this light projection head comprises the shading housing with light-proofness, therefore, it is possible to suppress parasitic light to enter optics beyond light-projecting portion and cause producing outer ring light due to this parasitic light.
In this manual, the optical sensor of above-mentioned light projection head is also openly employed.Optical sensor disclosed in this instructions comprises: above-mentioned light projection head; Light-receiving head, it receives the light from the outgoing of above-mentioned light projection head; And control part, it judges the presence or absence of measuring object based on the light received with above-mentioned light-receiving head.In this optical sensor, because the outer ring light of the light from light projection head outgoing is weakened, therefore, it is possible to the presence or absence of detection assay object accurately.
Optical sensor disclosed in this instructions also can be, above-mentioned light-receiving head is configured in the position at least projecting head with above-mentioned light and offset on the direction orthogonal with above-mentioned outbound course, receives from above-mentioned light projection head outgoing and the light of determined object reflection.According to this optical sensor, in the optical sensor of reflection-type, can the presence or absence of detection assay object accurately.
Optical sensor disclosed in this instructions also can be, described optical sensor comprises the cover of light transmission, this cover lid make above-mentioned light project head light outgoing exit facet and by the sensitive surface of the light-receiving of above-mentioned light-receiving head.Because this light projection head has cover, therefore, it is possible to suppress such as dust, medicine etc. to be attached to exit facet, sensitive surface and optical sensor becomes and can not use.In addition, in this light projection head, because the outer ring light of the light from light projection head outgoing is weakened, therefore, it is possible to suppress reflect from the outer ring light quilt cover of exit facet outgoing and arrive sensitive surface and optical sensor to measuring object erroneous judgement.
The effect of utility model
According to the utility model disclosed in this instructions, can suppress from light projection head outgoing outer ring light.
Accompanying drawing explanation
Fig. 1 is the sketch of Fibre Optical Sensor.
Fig. 2 is the cut-open view of optical fiber head.
Fig. 3 is the front view of optical fiber head.
Fig. 4 is the stereographic map of light guide member.
Fig. 5 is the cut-open view of optical fiber head.
Fig. 6 is the cut-open view of optical fiber head.
Fig. 7 is the fibre termination unit of prior art.
Fig. 8 is the front view of the optics of light projection head.
Fig. 9 is the rear view of the optics of light projection head.
Figure 10 is the vertical view of the optics of light projection head.
Figure 11 is the right view of the optics of light projection head.
Description of reference numerals
10: Fibre Optical Sensor, 20: sensor main body, 21: illuminating part, 22: light projector loop, 23: light accepting part, 24: by light circuit, 27: control loop, 30: optical fiber head, 31, 32: optical fiber, 33: exit facet, 34: sensitive surface, 40: light guide member, 41: patchhole, 42: main part, 43: the 1 stage portion, 44: the 1 reflecting parts, 44A, 46A: reflecting surface, 45: the 2 stage portion, 46: the 2 reflecting parts, 47: light collecting part, 48: breach, 49: optical axis, 50: shading housing, 53: teat, 60: body shell, 61: front surface cover.
Embodiment
< embodiment >
Utilize Fig. 1 to Figure 11 that one embodiment is described.
1. the structure of Fibre Optical Sensor
Fig. 1 is the sketch of the formation that Fibre Optical Sensor 10 is shown.Fibre Optical Sensor 10 comprises sensor main body 20 and is connected to the optical fiber head 30 of the reflection-type of sensor main body 20 via optical fiber 31,32.
Sensor main body 20 comprises the housing 20A in outline box.Be provided with in the inside of housing 20A illuminating part 21, light projector loop 22, light accepting part 23, by light circuit 24 and control loop 27.Illuminating part 21 is such as made up of the light-emitting component such as LED, laser diode, plays the function by the optical fiber 31 of light projector, light LA being irradiated to predetermined surveyed area from the exit facet 33 of optical fiber head 30.Light projector loop 22 is response drives illuminating part 21 drive circuits from the instruction of control loop 27.Optical fiber 31 and illuminating part 21 are examples for light-projecting portion.
Light accepting part 23 is such as made up of photovalves such as phototransistors, plays the function being received the reflected light LB from surveyed area by the sensitive surface 34 of optical fiber head 30 and the optical fiber 32 of light.Play the function exported by light signal of the grade corresponding to the light income of light accepting part 23 by light circuit 24.Control loop 27 play by by from export by light circuit 24 by the grade of light signal to compare with predetermined threshold value the object judged in surveyed area position, with presence or absence of function.Control loop 27 is examples for control part.
Optical fiber head 30 comprises the optical fiber 31 of light projector, the optical fiber 32 of light, light guide member 40, shading housing 50 and front surface cover 61 in the inside in the columned metallicity of outline or peucinous body shell 60.The front surface of optical fiber head 30 is formed by light LA to the exit facet 33 of surveyed area outgoing and receive from the sensitive surface 34 of the reflected light LB of surveyed area.Optical fiber head 30 is examples for light projection head and light-receiving head, and light guide member 40 is examples for optics.
Fig. 2 is the cut-open view of optical fiber head 30.The optical fiber 31 of light projector has identical wire diameter with the optical fiber 32 of light, and configures side by side at left and right directions.Light guide member 40 is such as made up of the resin with light transmission, is installed in the front of the optical fiber 31 of light projector, plays the function light LA that the optical fiber 31 from light projector exports being guided to exit facet 33.In addition, light guide member 40 is installed in the front of the optical fiber 32 of light, plays the function reflected light LB from surveyed area received with sensitive surface 34 being guided to the optical fiber 32 of light.The patchhole 41 for being inserted by optical fiber 31,32 is provided with in the back-surface side of light guide member 40.Light guide member 40 is examples for optics, and patchhole 41 is examples for maintaining part.
Shading housing 50 is such as made up of the resin of light-proofness, plays and will have the light guide member 40 of light transmission from outside shading, and the function of shading mutually.The patchhole 51 for inserting optical fiber 31,32 is provided with in the back-surface side of shading housing 50.In addition, the patchhole 52 for inserting light guide member 40 is provided with in the front-surface side of shading housing 50.Shading housing 50 by inserting optical fiber 31,32 and light guide member 40 in patchhole 51,52, thus keeps optical fiber 31,32 and light guide member 40.
Front surface cover 61 is such as made up of the resin with light transmission, and the front surface playing the optical fiber head 30 by being formed with exit facet 33 and sensitive surface 34 covers, and prevents the function that dust, liquid adhere to light guide member 40.Front surface cover 61 is examples for cover.
Fig. 3 is the front view of optical fiber head 30.When manufacturing optical fiber head 30, first, light guide member 40 is pressed in the patchhole 52 of shading housing 50.The teat 53 that front end is projected into patchhole 52 is provided with around patchhole 52.Because light guide member 40 is pressed into patchhole 52, and be connected to teat 53, thus located at above-below direction and left and right directions.
Then, optical fiber 31,32 is pressed in the patchhole 52 of shading housing 50 and the patchhole 41 of light guide member 40.Because patchhole 51 is communicated with patchhole 52, the leading section of optical fiber 31,32 is pressed into via the patchhole 52 of shading housing 50 patchhole 41 being engaged in light guide member 40, thus optical fiber 31,32 can not be kept movably relative to light guide member 40.The front surface end of the patchhole 52 be communicated with the patchhole 51 of the optical fiber 31 being inserted with light projector is equivalent to exit facet 33.In addition, the front surface end of the patchhole 52 be communicated with the patchhole 51 of the optical fiber 32 being inserted with light is equivalent to sensitive surface 34.
2. the structure of light guide member
Fig. 4 is the stereographic map of light guide member 40.Light guide member 40 is cylindric in outline, guides light along its axial 49 (i.e. fore-and-aft directions).That is, axis 49 also can be called the direction of optical axis 49.Light guide member 40 is from the back-surface side of optical axis 49 towards front-surface side, and main part 42, the 1st stage portion 43, the 1st reflecting part 44, the 2nd stage portion 45, the 2nd reflecting part 46 and light collecting part 47 is by the configuration on coaxial of its order.
Main part 42 is provided with patchhole 41 in inside, and is provided with the breach 48 for representing the direction orthogonal with optical axis 49 at outside surface.Light collecting part 47 is formed towards front-surface side convexly.The light that optical fiber 31 from light projector exports by light collecting part 47 is to direction optically focused orthogonal to the axial direction.
1st reflecting part 44 and the 2nd reflecting part 46 be configured to respectively along with from main part 42 away from and opening diameter φ increase, so-called conical by its shape.Therefore, as in Fig. 5 with shown in L1, L2, owing to being input to light guide member 40 from the optical fiber 31 of light projector and from optical axis 49 to side (namely, left and right directions, above-below direction) light that spreads reflected in the side of the 1st reflecting part 44 and the side of the 2nd reflecting part 46, i.e. reflecting surface 44A, 46A, thus become the light along optical axis 49.
On the other hand, at the 1st reflecting part 44 and the 2nd reflecting part 46, conical by its shape is different relative to the angle of inclination of optical axis 49.In the present embodiment, as in Fig. 5 with shown in θ 1, θ 2, the tilt angle theta 2 being configured to the 2nd reflecting part 46 being configured in front-surface side is less than the tilt angle theta 1 of the 1st reflecting part 44 being configured in back-surface side.Because the 2nd reflecting part 46 configures to obtain the more forward face side of ratio the 1st reflecting part 44, optical fiber 31 from light projector compared with the 1st reflecting part 44 remotely configures, therefore, little relative to the slope α 1 of optical axis 49 by the light L1 reflected at the 1st reflecting part 44 relative to slope α 2 ratio of optical axis 49 by the light L2 reflected at the 2nd reflecting part 46.Therefore, by the tilt angle theta 2 of the 2nd reflecting part 46 being set less than the tilt angle theta 1 of the 1st reflecting part 44, make to be become the light along optical axis 49 at each reflecting part 44,46 by light L1, the L2 reflected.
And, as in Fig. 5 with shown in φ 1F, φ 2B, the opening diameter φ 2B being configured in the rear end side of the 2nd reflecting part 46 of front-surface side is less than the opening diameter φ 1F of front of the 1st reflecting part 44 being configured in back-surface side.Therefore, be configured in the 2nd stage portion 45 be combined between the 1st reflecting part 44 with the 2nd reflecting part 46 and by these reflecting parts to be configured to along with opening diameter φ reduces, the so-called reverse tapered shapes away from main part 42.Therefore, as in Fig. 6 with shown in L3, from the optical fiber 31 of light projector be input to light guide member 40 and from optical axis 49 to side diffusion light among, the light along optical axis 49 can not be become in the 2nd stage portion 45 by the light reflected, suppressed from the outgoing of exit facet 33.
Equally, as in Fig. 5 with shown in φ 1B, φ H, the opening diameter φ 1B of the rear end side of the 1st reflecting part 44 is less than the opening diameter φ H of main part 42.Therefore, be configured in the 1st stage portion 43 be combined between main part 42 with the 1st reflecting part 44 and by these positions and be configured to reverse tapered shapes.Therefore, as in Fig. 6 with shown in L4, from the optical fiber 31 of light projector output to light guide member 40 and from optical axis 49 to side diffusion light among, the light along optical axis 49 can not be become in the 1st stage portion 43 by the light reflected, the outgoing gone out from penetrating face 33 is suppressed.
Fig. 7 illustrates the fibre termination unit of prior art.In the fibre termination unit of prior art, be provided with diaphragm 71 in the front-surface side of the optical fiber of light projector, and, be configured with non-spherical lens 70.In this configuration, can not to after have passed diaphragm 71 as carried out shading with the light spread as shown in L3, L4 in Fig. 6, and from the front-surface side outgoing of non-spherical lens 70, can not effectively suppress outer ring light.
In the present embodiment, no matter with or without diaphragm 71, as shown in Figure 6, owing to inhibit with the light shown in L3, L4 from exit facet 33 outgoing, therefore, it is possible to suppress outer ring light.
Fig. 8 to Figure 11 shows the optics of the light projection head as the article relevant to appearance design.These article 40 are by the optics of light towards the light projection head of surveyed area outgoing.As shown in Fig. 1 etc., these these article 40, playing in the optical fiber head 30 of function as light projection head, are configured in the front of the light-projecting portion such as optical fiber 31, illuminating part 21, and make the light LA that exports from light-projecting portion through and towards surveyed area outgoing.In addition, these article 40 on the whole cylindrically, such as, are the parts formed with the photopermeability such as propylene, glass material.Be formed with multiple reflecting surface 44A, 46A in the periphery around optical axis 49 of these article 40, the plurality of reflecting surface 44A, 46A along this optical axis 49 arrange on coaxial and make in these article 40 through light generation internal surface reflection.Each reflecting surface 44A, 46A are in the more tubular shape that opening diameter φ more increases towards the front, direction of optical axis 49, the rear end being positioned at the reflecting surface 46A of front side is compared with the front end of the reflecting surface 44A being positioned at rear side, opening diameter φ is little, and is incorporated into via the 2nd stage portion 45 front end that this is positioned at the reflecting surface 44A of rear side.In addition, in Fig. 8 to Figure 11, part indicated by the solid line wants to obtain as local appearance design the part of appearance design registration.
3. effect explanation
In the light guide member 40 of above-mentioned present embodiment, the opening diameter φ 2B being configured in the rear end side of the 2nd reflecting part 46 of front-surface side is less than the opening diameter φ 1F of front of the 1st reflecting part 44 being configured in back-surface side.Therefore, the 2nd stage portion 45 that the 1st reflecting part 44 combines with the 2nd reflecting part 46 is configured to reverse tapered shapes, owing to inhibit in the 2nd stage portion 45 by the light that reflects from exit facet 33 outgoing, thus outer ring light can be weakened.
In the light guide member 40 of above-mentioned present embodiment, the tilt angle theta 2 being configured in the 2nd reflecting part 46 of front-surface side is less than the tilt angle theta 1 of front of the 1st reflecting part 44 being configured in back-surface side.Therefore, it is possible to make the light that exports from the optical fiber 31 of light projector and correspondingly reflect relative to the slope of optical axis 49, the light of reflection is made to become light along optical axis 49.
In the light guide member 40 of above-mentioned present embodiment, owing to having light collecting part 47, therefore, it is possible to by the light that exports from light-projecting portion to the direction optically focused orthogonal with optical axis 49, outer ring light can be weakened.
In the light guide member 40 of above-mentioned present embodiment, owing to being provided with the patchhole 41 of the optical fiber 31 inserting light projector, therefore, it is possible to suppress the optical fiber 31 of light projector to change with the relative position of light guide member 40, the change due to relative position can be suppressed to cause producing outer ring light.
In the light guide member 40 of above-mentioned present embodiment, because reflecting surface 44A, 46A of reflecting part 44,46 are made up of the side of light guide member 40, therefore, it is possible to easily form the optics with multiple reflecting surface 44A, 46A.
In the optical fiber head 30 of above-mentioned present embodiment, to be pressed in the shading housing 50 with light-proofness due to light guide member 40 and to be kept, therefore, it is possible to suppress parasitic light to enter light guide member 40 from outside and cause producing outer ring light due to this parasitic light.
In the Fibre Optical Sensor 10 of above-mentioned present embodiment, there is the front surface cover 61 covered by the front surface of optical fiber head 30.If be provided with front surface cover 61, then arrived sensitive surface 34 at front surface cover by reflecting from the outer ring light of exit facet 33 outgoing, can cause the position to the object in surveyed area, with presence or absence of error detection.As mentioned above, in the optical fiber head 30 of present embodiment, weaken outer ring light, inhibit the generation of outer ring light, therefore, even if outer ring light arrives sensitive surface 34, its light quantity is also suppressed, thus inhibit position to object in surveyed area, with presence or absence of error detection.
Other embodiments of < >
The utility model is not limited to the embodiment illustrated according to above-mentioned description and accompanying drawing, and such as embodiment is also contained in protection domain of the present utility model as following.
(1) in the present embodiment, the example that the front surface being used in optical fiber head 30 is provided with front surface cover 61 is illustrated, but, also can necessarily not be provided with front surface cover 61.
(2) in the present embodiment, the example of the optical fiber head 30 of reflection-type is used to be illustrated, but, also can apply the optical fiber head of infiltration type, light is projected head to the optical fiber head of this infiltration type and light-receiving head is arranged independently, and light is projected head and light-receiving head configures opposite one another.
(3) in the present embodiment, the example forming the optics with multiple reflecting surface 44A, 46A and multiple stage portion 43,45 by light guide member 40 is used to be illustrated, but, be not limited thereto.Such as, also can paste the high optics of reflectivity at shading housing 50 and form reflecting surface 44A, 46A, and paste the low optics of reflectivity and form stage portion 43,45.
(4) in the present embodiment, be used in the example that light guide member 40 is provided with patchhole 41 and light collecting part 47 and be illustrated, but, at least can not be provided with a wherein side yet.
(5) in the present embodiment, the example by the light exported from illuminating part 21 exports light guide member 40 to via the optical fiber 31 of light projector is used to be illustrated, but, be not limited thereto.Such as, also illuminating part 21 can be inserted in the patchhole 41 of light guide member 40, by light output to light guide member 40.
(6) in the present embodiment, be used in and be illustrated relative to the example that the slope of optical axis 49 is straight lines in reflecting part 44,46 conical by its shape, but the utility model being not limited thereto, also can be the curve-likes such as para-curve.
Claims (9)
1. a light projection head, it comprises:
Light-projecting portion, it exports light; And
Optics, it is configured in the front of this light-projecting portion on the outbound course of described light-projecting portion, and has multiple reflecting surface and stage portion,
Described multiple reflecting surface is arranged in coaxially along described outbound course,
Described each reflecting surface is the tubular shape that more opening diameter more increases away from described light-projecting portion,
The rear end being positioned at the reflecting surface of front side is compared with the front end of the reflecting surface being positioned at rear side, and opening diameter is little, and is incorporated into via described stage portion the front end that this is positioned at the reflecting surface of rear side.
2. light projection head as claimed in claim 1, wherein,
Described be positioned at front side reflecting surface with described be positioned at rear side reflecting surface compared with, little relative to the angle of inclination of described outbound course.
3. as light projection head according to claim 1 or claim 2, wherein,
Described optics has light collecting part, and this light collecting part is configured in the front of described multiple reflecting surface and stage portion, and by the light that exports from described light-projecting portion to the direction optically focused orthogonal with described outbound course.
4. as light projection head according to claim 1 or claim 2, wherein,
Described optics is provided with maintaining part, and this maintaining part is configured in the rear of described multiple reflecting surface and stage portion, and keeps the leading section of described light-projecting portion.
5. as light projection head according to claim 1 or claim 2, wherein,
Described optics is the light guide member guided to described outbound course by the light exported from described light-projecting portion,
Described multiple reflecting surface is the side on the direction orthogonal with described outbound course of described light guide member.
6. as light projection head according to claim 1 or claim 2, wherein,
Described light projection head comprises shading housing, and this shading housing keeps described light-projecting portion and described optics, and has light-proofness.
7. an optical sensor, the presence or absence of its detection assay object, wherein,
Described optical sensor comprises:
Light projection head according to claim 1 or claim 2;
Light-receiving head, it receives the light from the outgoing of described light projection head; And
Control part, it judges the presence or absence of measuring object based on the light received with described light-receiving head.
8. optical sensor as claimed in claim 7, wherein,
Described light-receiving head is configured in and at least on the direction orthogonal with described outbound course, projects the position that head offsets from described light, receives from described light projection head outgoing and the light of determined object reflection.
9. optical sensor as claimed in claim 8, wherein,
Described optical sensor comprises the cover of light transmission, this cover lid make described light project head light outgoing exit facet and by the sensitive surface of the light-receiving of described light-receiving head.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014003796A JP6338378B2 (en) | 2014-01-10 | 2014-01-10 | Optical fiber head, optical sensor |
| JP2014-003796 | 2014-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203494U true CN204203494U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420606736.9U Active CN204203494U (en) | 2014-01-10 | 2014-10-20 | Light projection head, optical sensor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6338378B2 (en) |
| KR (1) | KR101725797B1 (en) |
| CN (1) | CN204203494U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017102193A (en) * | 2015-11-30 | 2017-06-08 | パナソニック デバイスＳｕｎｘ株式会社 | Coaxial fiber head, fiber sensor, and method of manufacturing coaxial fiber head |
| CN112437877A (en) * | 2018-09-11 | 2021-03-02 | 优志旺电机株式会社 | Enzyme-linked immunosorbent assay (ELISA) instrument |
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2014
- 2014-01-10 JP JP2014003796A patent/JP6338378B2/en active Active
- 2014-10-17 KR KR1020140140578A patent/KR101725797B1/en active IP Right Grant
- 2014-10-20 CN CN201420606736.9U patent/CN204203494U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR101725797B1 (en) | 2017-04-11 |
| JP2015132699A (en) | 2015-07-23 |
| KR20150083768A (en) | 2015-07-20 |
| JP6338378B2 (en) | 2018-06-06 |
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