CN203786342U - Optical assembly - Google Patents
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- CN203786342U CN203786342U CN201420172931.5U CN201420172931U CN203786342U CN 203786342 U CN203786342 U CN 203786342U CN 201420172931 U CN201420172931 U CN 201420172931U CN 203786342 U CN203786342 U CN 203786342U
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model provides an optical assembly, which comprises a substrate and a filtering device, wherein the upper surface of the substrate is provided with a first groove, a total reflecting surface and a connecting part are formed in the first groove, the total reflecting surface is capable of reflecting parallel light formed by light emitted from a light-emitting device and passing through a first lens; the filtering device comprises a first part which is in detachable connection with the connecting part, and a second part which forms a light splitting surface; and the filtering device is provided with a light-transmitting optical coating at least on the light splitting surface, so as to split the parallel light reflected by the total reflecting surface into a first light beam and a second light beam, the first light beam travels toward a third lens side, and the second light beam travels toward a photoelectric detection device. Compared with the prior art, the optical assembly provided by the utility model can set the light transmission paths optimally, avoids the existence of assembly glue on the light paths, and greatly improves the reliability and stability of the optical assembly.
Description
Technical field
The utility model belongs to optical transceiver module technical field, relates in particular to a kind of optical module.
Background technology
Along with scientific and technical development, high-speed transfer signalling technique is widely used, optical interconnection can be in the much wide bandwidth than electricity transmission signal transmission, and use small size, low-power consumption optics structure signal transmission system.Therefore, notice has been invested as the optical interconnection of equipment room signal transmission technology.Accordingly, the optical module that is installed on computing machine, vehicle or optical transceiver module etc. as electronic unit is widely used.
In prior art, the Chinese patent " optical assembly of realization point beam energy control " that is 201320424531.4 as the patent No. discloses a kind of optical assembly, described optical assembly comprises matrix, comprises and in described groove, be provided with filter by the groove that is opened in body upper surface in described matrix.
Due to the restriction of existing structure, existing structure is pasted filter on the inclined-plane of groove, in equipment use procedure, because there being bonded adhesives in light path, along with the increase of temperature, bonded adhesives can produce the effect of expanding with heat and contract with cold, cause the surperficial radian of bonded adhesives to change, light is in the time entering bonded adhesives from air, and incident angle changes, and refraction angle etc. changes then, change direction of beam propagation, coupling efficiency is reduced, and loss increases, and the bonded adhesives in this structure light path has greatest impact for the reliability and stability of optical assembly.
Summary of the invention
In order to address the above problem, the utility model provides a kind of optical module, and this optical module rationally utilizes matrix inner space, has avoided the existence of adhesive glue in light path, has greatly improved the reliability and stability of optical assembly.
Accordingly, the optical module in the utility model embodiment, described optical module comprises matrix, filter, and the circuit board being connected with described matrix lower surface, described circuit board is provided with light-emitting device and Electro-Optical Sensor Set near described matrix one side; The upper surface of described matrix offers the first groove, and its lower surface offers the second groove; On the bottom land of described the second groove, be provided with at least one first lens and at least one second lens, described first lens is arranged at the top of described light-emitting device; Described the second lens are arranged between described filter and described Electro-Optical Sensor Set; On described matrix, be also provided with at least one the 3rd lens, described the 3rd lens are arranged at the side of described matrix;
In described the first groove, be formed with fully reflecting surface and connecting portion, described fully reflecting surface can reflect that described light-emitting device sends and light after first lens; Described filter comprises the Part I being removably connected with described connecting portion, and forms the Part II of light splitting surface; Described filter is at least provided with the optical coating of light-permeable on its light splitting surface, be divided into the first light beam and the second light beam with the light that described fully reflecting surface is reflected, described the first light beam enters towards described the 3rd lens skidding, and described the second light beam is towards Electro-Optical Sensor Set.
As further improvement of the utility model, in described the first groove, form a projection, on the inclined wall of described projection, be provided with fully reflecting surface.
As further improvement of the utility model, in described the first groove, form a projection, the inclined wall of described projection forms fully reflecting surface.
As further improvement of the utility model, the axis of described first lens and described the second lens is parallel to each other, and mutually vertical with the axis of described the 3rd lens.
As further improvement of the utility model, described Part I and Part II are structure as a whole.
As further improvement of the utility model, described first lens, described the second lens are identical with the quantity of described the 3rd lens.
As further improvement of the utility model, described light-emitting device and described Electro-Optical Sensor Set are contained in the second groove.
As further improvement of the utility model, described matrix one side surface is also offered a three-flute; Described the 3rd lens are arranged at described three-flute bottom land.
As further improvement of the utility model, described light-emitting device comprises multiple VCSEL laser arrays, and described Electro-Optical Sensor Set comprises multiple MPD back light detector arrays, and described VCSEL laser array is identical with described MPD back light detector array quantity.
As further improvement of the utility model, the quantity of described VCSEL laser array and described first lens is identical.
Compared with prior art, the optical module that the utility model provides, by form connecting portion in its first groove, the Part I of described filter is removably connected on described connecting portion, and form light splitting surface at the Part II of described filter, described filter is at least provided with the optical coating of light-permeable on its light splitting surface, avoid the existence of adhesive glue in light path, the reliability and stability of optical assembly are greatly improved, also in described the first groove, also form fully reflecting surface simultaneously, can light bang path be set optimum.
Brief description of the drawings
The structural representation of the single channel optical module that Fig. 1 provides for the utility model the first embodiment;
Light transfer route schematic diagram in the single channel optical module that Fig. 2 provides for Fig. 1;
The plan structure schematic diagram of the single channel optical module that Fig. 3 provides for the utility model the second embodiment;
The sectional structure schematic diagram of A-A direction in the single channel optical module that Fig. 4 provides for Fig. 3;
The sectional structure schematic diagram of B-B direction in the single channel optical module that Fig. 5 provides for Fig. 3;
Fig. 6 is light transfer route schematic diagram in the receiving loop providing on Fig. 5 basis;
The plan structure schematic diagram of the Multi-channel optical assembly that Fig. 7 provides for the utility model the 3rd embodiment.
Embodiment
Below with reference to embodiment shown in the drawings, the utility model is described in detail.But these embodiments do not limit the utility model, the conversion in structure, method or function that those of ordinary skill in the art makes according to these embodiments is all included in protection domain of the present utility model.
For convenience of description, be described in detail taking operator's viewing angle as reference direction, it is upper that it below occurs, under, a left side, the right side is all a kind of with reference to angle.
Accordingly, as shown in Figure 1, the structural representation of the single channel optical module that Fig. 1 provides for the utility model the first embodiment.
Accordingly, optical module of the present utility model comprises: matrix 10, with the circuit board 20 being connected with described matrix 10 lower surfaces; Described circuit board 20 is provided with light-emitting device 21 and Electro-Optical Sensor Set 23 near described matrix 10 one sides.
Accordingly, the integral structure that described matrix 10 is disposal molding, its material is high temperature resistance optic polymer, for example: resin; Described matrix 10 upper surfaces offer the first groove 11, and its lower surface offers the second groove 12; In described the first groove 11, be provided with fully reflecting surface 113, and be removably connected with described filter 30; Described filter 30 carries out light splitting and energy distribution for realizing to light beam; Accordingly, described fully reflecting surface 113 and described filter 30 are all arranged in described the first groove 11, rationally utilize matrix 10 inner spaces, optimum arranges light bang path; One first lens 121 is set on the bottom land of described the second groove 12, one second lens 123, described first lens 121 is arranged between described light-emitting device 21 and described fully reflecting surface 113, incides fully reflecting surface 113 for the light of launching from described light-emitting device 21 is formed to directional light; Described the second lens 123 are arranged between described filter 30 and described Electro-Optical Sensor Set 23; Be used for the parallel light focusing reflecting through described filter 30 to Electro-Optical Sensor Set 23; On described matrix 10, be also provided with the 3rd lens 133, described the 3rd lens 133 are arranged at the side of described matrix, and relatively and described filter 30 arrange.
Preferably, in described the first groove 12, also form projection 111, described projection 111 has an inclined wall, and described inclined wall forms described fully reflecting surface 113; Described fully reflecting surface 113 is for redirecting light beam to turn to, and for example 90 degree turn to.
Preferably, described projection 111 is one-body molded with described the first groove 11.
Be understandable that, in the art, can in several ways light beam redirected and be turned to.For example, a completely reflecting mirror is set on described inclined wall, to form fully reflecting surface 113 on described inclined wall; In the utility model, there is total reflection and described inclined wall directly formed to fully reflecting surface 113 in the interface that adopts light to enter into air.
Certainly in actual application, the position of described fully reflecting surface 113 is only for being set in described the first groove 11, also can be by a sidewall slope setting of described matrix 10, to form described fully reflecting surface 113, or offer one the 4th groove at the upper surface of described matrix 10, by a sidewall slope setting of described the 4th groove, and form fully reflecting surface 113 etc., the position that fully reflecting surface 113 is set in described matrix 10 is not specifically limited, as long as realize light beam redirected and turned to by described fully reflecting surface 113, for example 90 degree turn to, be not described in detail at this.
Preferably, the interior formation a junction 112 of described the first groove 11, described filter 30 is removably connected in described connecting portion 112, the one side of described filter 30 is provided with the optical coating of light-permeable, be divided into the first light beam and the second light beam with the directional light that described fully reflecting surface 113 is reflected, described the first light beam enters towards described the 3rd lens 133 skiddings, and described the second light beam is towards Electro-Optical Sensor Set 21.
Preferably, described connecting portion 112 is one-body molded with described the first groove 11.
Accordingly, in preferred implementation of the present utility model, described filter 30 comprises the Part I 301 being removably connected with described connecting portion 112, and forms the Part II 303 of light splitting surface; The lower surface of described Part I 301 and described connecting portion 112 removably connect; For example: the lower surface of described Part I 301 and described connecting portion 112 removably connect by gluing; The upper surface of described Part I 301 is arranged near described printing opacity mouth 131 1 sides; Described Part II 303 is arranged in the light path of the light that described fully reflecting surface 113 reflects completely.
Preferably, described filter 30 is at least provided with the optical coating of light-permeable on its light splitting surface, for example: glass; Be divided into the first light beam and the second light beam with the directional light that described fully reflecting surface 113 is reflected, described the first light beam enters towards described the 3rd lens 133 skiddings, and described the second light beam is towards Electro-Optical Sensor Set 23.
Accordingly, described optical coating can convert the demand of light allocation proportion according to user, for example: require the light through being formed with optically coated filter 30, wherein have 10% beche-de-mer without spike and reflection, 90% beche-de-mer without spike and refraction; Or 5% beche-de-mer without spike and reflection, 95% beche-de-mer without spike and refraction etc., or according to other ratio, the light that installs after filtering 30 is distributed, realize according to this splitting ratio of described optical module is controlled, do not do too much and repeat at this.
Preferably, described Part I 301 and described Part II 303 are one-body molded.
Compared with prior art, described filter 30 is at least provided with the optical coating of light-permeable on its light splitting surface, and described filter 30 removably connects with described the first groove 11, can be according to user's demand, there is the filter 30 of different optical plated film by replacing, make described matrix 10 splitting ratio in transmission photoreduction process controlled.
In addition, only described Part II 303 is arranged in the light path of the light that described light-emitting device 21 launches, can avoids the transmission of the subparticipation light that described filter 30 is connected with described the first groove 11.It is with respect to prior art, avoid because there being bonded adhesives in light path, along with the increase of temperature, bonded adhesives produces the effect of expanding with heat and contract with cold, cause the surperficial radian of bonded adhesives to change, when light enters bonded adhesives, incident angle changes, and refraction angle etc. changes then, change direction of beam propagation, coupling efficiency is reduced, and the generation of problem that loss increases, has greatly improved the reliability and stability of optical assembly.
Accordingly, on described matrix 10, a sidewall of relatively described filter 30 forms printing opacity mouth 131, and described printing opacity mouth 131 is for holding optical devices (not shown), and described optical devices for example, for sending and/or receiving beam: optical fiber; Accordingly, be formed with on a sidewall of printing opacity mouth 131 at described matrix 10, corresponding described printing opacity mouth 131 places also arrange the 3rd lens 133; Described the 3rd lens 133 for parallel light focusing that described filter 30 is reflected to printing opacity mouth 131; Described the 3rd lens 133 are arranged between described filter 30 and described printing opacity mouth 131.
It should be noted that, described printing opacity mouth 131 can directly be arranged on a sidewall of described matrix 10, also can on the sidewall of described matrix 10, offer a special groove, for holding described printing opacity mouth 131 and the 3rd lens 133; Accordingly, in preferred implementation of the present utility model, on a sidewall of described matrix 10, also offer a three-flute 13, the interior formation printing opacity of described three-flute 13 mouth 131; The bottom land of described three-flute 13 also arranges three lens 133 corresponding with described printing opacity mouth 131, is not described in detail at this.
Preferably, the axis of described first lens 121 and described the second lens 123 is parallel to each other, and mutually vertical with the axis of described the 3rd lens 133.
Preferably, the quantity of described first lens 121, described the second lens 123 and described the 3rd lens 133 is identical, is respectively at least 1.
Accordingly, on the residing sidewall of described printing opacity mouth 131, a guide 15 is also set, described guide 15 is for combining described optical module and other parts, certainly, described guide 15 also can be arranged on other positions of described matrix 10, is not described in detail at this.
Preferably, described light-emitting device 21 and described Electro-Optical Sensor Set 23 all can be fixed on described circuit board 20 by conducting resinl or insulating gel.
Preferably, described circuit board is PCB circuit board.
Preferably, in the time that described circuit board 20 is connected with described matrix 10, described light-emitting device 21 and described Electro-Optical Sensor Set 23 are in described the second groove 12.
Preferably, the below of described light-emitting device 21 in described fully reflecting surface 113; The below of described Electro-Optical Sensor Set 23 in filter 30.
Preferably, described light-emitting device 21 is vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL) array, described Electro-Optical Sensor Set 23 is back light detector (monitor photo detector, MPD) array.
Preferably, described VCSEL laser array is identical with the quantity of MPD back light detector array.
Preferably, in single pass optical module, the quantity of described VCSEL laser array and described MPD back light detector battle array is 1.
It should be noted that, in other embodiments of the present utility model, for the ease of discharging the steam in described matrix 10, can also on described matrix 10, offer a through hole; In addition, can also, according to actual demand, on described matrix 10, offer bayonet socket etc., so that combine with other devices, not be described in detail at this.
Certainly, in above embodiment, also comprise (trans-impedance amplifier, TIA) trans-impedance amplifier, and for driving laser driving chip of light-emitting device etc., in technical field described in the utility model, these devices are all requisite components and parts in optical module, also be described later in detail in the prior art, be not described in detail at this.
Compared with prior art, the optical module that the utility model provides, by form connecting portion in its first groove, the Part I of described filter is removably connected on described connecting portion, and form light splitting surface at the Part II of described filter, described filter is at least provided with the optical coating of light-permeable on its light splitting surface, avoid the existence of adhesive glue in light path, the reliability and stability of optical assembly are greatly improved, also in described the first groove, also form fully reflecting surface simultaneously, can light bang path be set optimum.
Accordingly, for light in clearer description the utility model the first embodiment transfer away to, show light transfer route schematic diagram in the single channel optical module that Fig. 2 provides for Fig. 1 in conjunction with Fig. 2; To transferring away to doing further of light in the optical module shown in Fig. 1 be illustrated.
Accordingly, in light beam transmittance process, described fully reflecting surface 113 reflexes to described filter 30 completely for the light that described light-emitting device 21 is launched, the light that described filter 30 is set to that described fully reflecting surface 113 is reflected is completely divided into the first light beam and the second light beam by a certain percentage, described the first light beam enters towards described the 3rd lens 133 skiddings, and described the second light beam enters towards Electro-Optical Sensor Set 23 skiddings.
Accordingly, in light transmittance process, described light-emitting device 21 sends light beam, form directional light and incide on fully reflecting surface 113 by first lens 121, light reflexes on the light splitting surface of described filter 30 completely through described fully reflecting surface 113 afterwards, under the effect of described filter 30, light beam is divided into two-way.
Path one: most of light, through the refraction of the light splitting surface of described filter 30, converges to printing opacity mouth 131 by the 3rd lens 133;
Path two: fraction light, through the reflection of the light splitting surface of described filter 30, converges to Electro-Optical Sensor Set 23 by described the second lens 123.
Compared with prior art, the optical module that the utility model provides, it comprises the matrix being wholely set, on described matrix, offer the first groove, in described the first groove, be removably connected with described filter, described filter is provided with the optical coating of light-permeable near the one side of described fully reflecting surface; Avoid the existence of adhesive glue in light path, greatly improved the reliability and stability of optical assembly.
Further, on the basis of the utility model the first embodiment, in order to realize the bi-directional of light beam in matrix 10, the described matrix of the utility model the first embodiment has been done to further improvement.
Accordingly, in conjunction with shown in Fig. 3 to Fig. 5.
Accordingly, the difference of the single channel optical module described in the single channel optical module of the second embodiment that the utility model provides and above-mentioned the first embodiment is: Electro-Optical Sensor Set 23 comprises transmitting terminal Electro-Optical Sensor Set 231 and receiving end Electro-Optical Sensor Set 233, and described transmitting terminal Electro-Optical Sensor Set 231 and described receiving end Electro-Optical Sensor Set 233 all can be fixed on described circuit board 20 by conducting resinl or insulating gel.Described fully reflecting surface 113 comprises transmitting terminal fully reflecting surface 1131 and receiving end fully reflecting surface 1133.
Preferably, described receiving end fully reflecting surface 1133 is arranged in described the first groove 11, and for light beam is redirected and turned to, for example 90 degree turn to.Accordingly, in the art, can in several ways light beam be redirected and be turned to equally.For example, another piece receiving end completely reflecting mirror 1133 is set described the first groove 11 is interior, or forms receiving end fully reflecting surface 1133 on another inclined wall of described the first groove 11; In the utility model, there is total reflection and described inclined wall directly formed to fully reflecting surface 113 in the interface that adopts light to enter into air.
Same, in actual application, the position of described receiving end fully reflecting surface 1133 is not only for being set in described the first groove 11, and its concrete structure is not described in detail at this.
Preferably, in embodiment of the present utility model, described receiving end fully reflecting surface 1133 is formed on another sidewall of described the first groove 11, another sidewall of described the first groove 11 also has a turnover halfpace between the notch of described the first groove 11, is beneficial to intensity conveniently stripped in the time making described matrix 10 and this matrix 10 of enhancing.
Preferably, described circuit board is PCB circuit board.
Preferably, in the time that described circuit board 20 is connected with described matrix 10, described transmitting terminal Electro-Optical Sensor Set 231, receiving end Electro-Optical Sensor Set 233 and described Electro-Optical Sensor Set 23 are in described the second groove 12.
Preferably, the below of described light-emitting device 21 in described fully reflecting surface 113; Described transmitting terminal Electro-Optical Sensor Set 231 is in transmitting terminal fully reflecting surface 1131 belows, the below of described receiving end Electro-Optical Sensor Set 233 in described receiving end fully reflecting surface 1133.
Preferably, described light-emitting device 21 is VCSEL laser array, and transmitting terminal Electro-Optical Sensor Set 231, receiving end Electro-Optical Sensor Set 233 are MPD back light detector battle array.
Preferably, the quantity of the described MPD back light detector battle array of the described MPD back light detector battle array of described VCSEL laser array, transmitting terminal, receiving end is identical.
Preferably, in single pass optical module, the quantity of the described MPD back light detector battle array of described VCSEL laser array, transmitting terminal, the described MPD back light detector battle array of receiving end is 1.
Certainly, in preferred implementation of the present utility model, can also be on the basis of above-mentioned embodiment, increase printing opacity mouth 131, three lens 133 corresponding with described printing opacity mouth 131, and with the quantity of corresponding described the second lens 123 of described Electro-Optical Sensor Set 23, its quantity is respectively two.
Accordingly, the quantity of described printing opacity mouth 131 is set to two, and one for luminous, and one for receiving light.
Accordingly, corresponding the 3rd lens 133 are set respectively on two described printing opacity mouths 131, described the 3rd lens 133 form directional light and incide described receiving end fully reflecting surface 1133 for the light that printing opacity mouth 131 is received to 131, one, printing opacity mouth for the parallel light focusing that major part is reflected through described filter 30.
Accordingly, the quantity of described the second lens 123 is also set to two, and one sending when light beam, the Electro-Optical Sensor Set 231 for parallel light focusing that fraction is reflected through described filter 30 to transmitting terminal; One in the time of receiving beam, be used for the parallel light focusing reflecting by described receiving end fully reflecting surface 1133 to receiving end Electro-Optical Sensor Set 233, certainly, described printing opacity mouth 131, corresponding conversion is also done in the position of described the 3rd lens 133 and described the second lens 123 thereupon, is not described in detail at this.
Accordingly, in light transmittance process, shown in Fig. 6, Fig. 6 is light transfer route schematic diagram in the receiving loop providing on Fig. 5 basis.
Accordingly, described light-emitting device 21 sends light beam, is formed directional light and is incided on fully reflecting surface 113 by first lens 121, and light reflexes on described filter 30 completely through described transmitting terminal fully reflecting surface 1131 afterwards, under the effect of described filter 30, light beam is divided into two-way.
Path one: most of light, through the refraction of the light splitting surface of described filter 30, converges to printing opacity mouth 131 by the 3rd lens 133;
Path two: fraction light, through the reflection of the light splitting surface of described filter 30, converges to transmitting terminal Electro-Optical Sensor Set 231 by described the second lens 123.
Accordingly, in light beam receiving course, receive light beam by printing opacity mouth 131, light, after described receiving end fully reflecting surface 1133 reflects completely, converges to receiving end Electro-Optical Sensor Set 233 through described the second lens 123 afterwards.
Compared with prior art, the optical module that the utility model provides, by form connecting portion in its first groove, the Part I of described filter is removably connected on described connecting portion, and form light splitting surface at the Part II of described filter, described filter is at least provided with the optical coating of light-permeable on its light splitting surface, avoid the existence of adhesive glue in light path, the reliability and stability of optical assembly are greatly improved, also in described the first groove, also form fully reflecting surface simultaneously, can light bang path be set optimum.
Further, for in same optical module, realize the multi-channel parallel transmission of light, ensure the performance of passage simultaneously, the utility model is on the basis of the first embodiment, by described matrix 10 is carried out to simple transformation, just can in a matrix 10, realize the multi-channel parallel transmission of light.
Concrete, shown in Fig. 7, the plan structure schematic diagram of the Multi-channel optical assembly that Fig. 7 provides for the utility model the 3rd embodiment.
Accordingly, the optical module that the optical module that the utility model the 3rd embodiment provides and the utility model the first embodiment provide, its difference is: described light-emitting device 21 comprises one or more VCSEL laser arrays, and described Electro-Optical Sensor Set comprises one or more MPD back light detector arrays; 121, at least two the second lens 123 of at least 2 first lens, 131 and at least 2 the 3rd lens 133 of at least 2 printing opacity mouths are also set on described matrix 10.
Preferably, the quantity of described VCSEL laser array is identical with the quantity of described MPD back light detector array;
Preferably, described first lens 121, described the second lens 123, described printing opacity mouth 131 is identical with the quantity of described the 3rd lens 133;
Preferably, multiple described the 3rd lens 133 are all in the surface, the same side in described matrix 10, and on same level straight line, and multiple described printing opacity mouths 131 are respectively with the described the 3rd lens 133 are corresponding arranges.
Preferably, multiple described first lens 121 bottom land in the second groove 12 simultaneously, and on same level straight line.
Accordingly, multiple described the second lens 123 bottom land in the second groove 12 simultaneously, and on same level straight line.
Each described first lens 121, is parallel to each other between the axis of described the second lens 123, and mutually vertical with the axis of described the 3rd lens 133.
Concrete, if user's demand is for having the optical module of N (N>1, and be positive integer) passage.Accordingly, there is various structures can construct the optical module with N passage; Below only lifting two kinds of structures illustrates.
Structure 1, in described optical module, the quantity of the quantity of described VCSEL laser array and described MPD back light detector array is 1; Described first lens 121, described the second lens 123, described printing opacity mouth 131, the quantity of described the 3rd lens 133 is N;
Accordingly, described N all top in described light-emitting device 21 of described first lens 121, when light converges to respectively after fully reflecting surface 113 through N described first lens 121, reflexing to completely through fully reflecting surface 113 on the light splitting surface of described filter 30, light is divided into the first light beam and the second light beam by the light splitting surface of described filter 30, most of light, the first light beam reflects through described filter 30, and focuses on corresponding N printing opacity mouth 131 through N described the 3rd lens 133 respectively and transmit; Fraction light reflects completely through the light splitting surface of described filter 30, and converges to MPD back light detector array through N described the second lens 123 respectively.
Structure 2, in described optical module, the quantity of described VCSEL laser array, the quantity of described MPD back light detector array, described printing opacity mouth 131, described the 3rd lens 133, the quantity of described first lens 121 and described the second lens 123 is N.
Accordingly, a described N first lens 121 is the top in N described VCSEL laser array respectively, bottom at described the second groove 12 is arranged in straight line, N VCSEL laser array launched N bundle light, when N bundle light converges to respectively after fully reflecting surface 113 through N described first lens 121 respectively, at the light splitting surface that reflexes to described filter 30 through fully reflecting surface 113 completely, light is divided into the first light beam and the second light beam by the light splitting surface of described filter 30, most of light, the first light beam is through the light splitting surface refraction of described filter 30, and focus on corresponding N printing opacity mouth 131 through N described the 3rd lens 133 respectively and transmit, fraction light reflects completely through the light splitting surface of described filter 30, and converges to respectively N MPD back light detector array through N described the second lens 123 respectively.
Certainly, in other embodiments, the quantity of the quantity of described VCSEL laser array and described MPD back light detector array can freely convert, as long as ensure that the quantity of described first lens 121 is more than or equal to port number N, can realize the N channel parallel transmission of light, not be described in detail at this.By above description, the Multi-channel optical assembly that the utility model the 3rd embodiment provides, can, in same matrix 10, realize the multi-channel parallel transmission of light, has simplified component design, has improved coupling efficiency, has reduced production cost.
Further, the utility model also can be realized the transmission of light multi-channel parallel on the basis of the second embodiment, and its principle is roughly the same with described the 3rd embodiment, is not described in detail at this.
Compared with prior art, the optical module that the utility model provides, by form connecting portion in its first groove, the Part I of described filter is removably connected on described connecting portion, and form light splitting surface at the Part II of described filter, described filter is at least provided with the optical coating of light-permeable on its light splitting surface, avoid the existence of adhesive glue in light path, the reliability and stability of optical assembly are greatly improved, also in described the first groove, also form fully reflecting surface simultaneously, can light bang path be set optimum.
Be to be understood that, although this instructions is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should make instructions as a whole, technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Listed a series of detailed description is above only illustrating for feasibility embodiment of the present utility model; they are not in order to limit protection domain of the present utility model, all do not depart from the equivalent embodiment that the utility model skill spirit does or change and all should be included in protection domain of the present utility model within.
Claims (10)
1. an optical module, comprises matrix, filter, and the circuit board being connected with described matrix lower surface, and described circuit board is provided with light-emitting device and Electro-Optical Sensor Set near described matrix one side;
The upper surface of described matrix offers the first groove, and its lower surface offers the second groove;
On the bottom land of described the second groove, be provided with at least one first lens and at least one second lens, described first lens is arranged at the top of described light-emitting device; Described the second lens are arranged between described filter and described Electro-Optical Sensor Set;
On described matrix, be also provided with at least one the 3rd lens, described the 3rd lens are arranged at the side of described matrix;
It is characterized in that, in described the first groove, be formed with fully reflecting surface and connecting portion, described fully reflecting surface can reflect that described light-emitting device sends and light after first lens;
Described filter comprises the Part I being removably connected with described connecting portion, and forms the Part II of light splitting surface;
Described filter is at least provided with the optical coating of light-permeable on its light splitting surface, be divided into the first light beam and the second light beam with the light that described fully reflecting surface is reflected, described the first light beam enters towards described the 3rd lens skidding, and described the second light beam is towards Electro-Optical Sensor Set.
2. optical module according to claim 1, is characterized in that, forms a projection in described the first groove, on the inclined wall of described projection, is provided with fully reflecting surface.
3. optical module according to claim 1, is characterized in that, forms a projection in described the first groove, and the inclined wall of described projection forms fully reflecting surface.
4. optical module according to claim 1, is characterized in that, the axis of described first lens and described the second lens is parallel to each other, and mutually vertical with the axis of described the 3rd lens.
5. optical module according to claim 1, is characterized in that, the Part I of described filter and second part are structure as a whole.
6. optical module according to claim 1, is characterized in that, described first lens, described the second lens are identical with the quantity of described the 3rd lens.
7. optical module according to claim 1, is characterized in that, described light-emitting device and described Electro-Optical Sensor Set are contained in the second groove.
8. optical module according to claim 1, is characterized in that, described matrix one side surface is also offered a three-flute; Described the 3rd lens are arranged at described three-flute bottom land.
9. optical module according to claim 1, it is characterized in that, described light-emitting device comprises multiple VCSEL laser arrays, and described Electro-Optical Sensor Set comprises multiple MPD back light detector arrays, and described VCSEL laser array is identical with described MPD back light detector array quantity.
10. optical module according to claim 9, is characterized in that, the quantity of described VCSEL laser array and described first lens is identical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172931.5U CN203786342U (en) | 2014-04-11 | 2014-04-11 | Optical assembly |
| US14/681,457 US9513448B2 (en) | 2014-04-11 | 2015-04-08 | Optical assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172931.5U CN203786342U (en) | 2014-04-11 | 2014-04-11 | Optical assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786342U true CN203786342U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420172931.5U Expired - Lifetime CN203786342U (en) | 2014-04-11 | 2014-04-11 | Optical assembly |
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| Country | Link |
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| CN (1) | CN203786342U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324771A (en) * | 2015-06-26 | 2017-01-11 | 华为技术有限公司 | Optical assembly and optical module |
| CN107346052A (en) * | 2016-05-06 | 2017-11-14 | 珠海保税区光联通讯技术有限公司 | Optics module and the optical device for possessing the optics module |
| TWI616692B (en) * | 2014-12-29 | 2018-03-01 | 鴻海精密工業股份有限公司 | Optical fiber connector and optical coupling lens |
| CN108072940A (en) * | 2016-11-15 | 2018-05-25 | 苏州旭创科技有限公司 | Optical module |
| CN112904494A (en) * | 2019-12-03 | 2021-06-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
-
2014
- 2014-04-11 CN CN201420172931.5U patent/CN203786342U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI616692B (en) * | 2014-12-29 | 2018-03-01 | 鴻海精密工業股份有限公司 | Optical fiber connector and optical coupling lens |
| CN106324771A (en) * | 2015-06-26 | 2017-01-11 | 华为技术有限公司 | Optical assembly and optical module |
| CN107346052A (en) * | 2016-05-06 | 2017-11-14 | 珠海保税区光联通讯技术有限公司 | Optics module and the optical device for possessing the optics module |
| CN107346052B (en) * | 2016-05-06 | 2021-06-04 | 珠海保税区光联通讯技术有限公司 | Optical module and optical apparatus having the same |
| CN108072940A (en) * | 2016-11-15 | 2018-05-25 | 苏州旭创科技有限公司 | Optical module |
| CN112904494A (en) * | 2019-12-03 | 2021-06-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| WO2021109776A1 (en) * | 2019-12-03 | 2021-06-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN112904494B (en) * | 2019-12-03 | 2023-08-08 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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