TWI661239B - Fiber optic module - Google Patents

Abstract

The invention relates to an optical fiber module, which includes: a circuit board, a photoelectric element group, a control element group, a body, and a light transmission group. The photoelectric element group, the control element group and the body are arranged on the circuit board. One side of the body is concavely provided with a first receiving groove, and the other side forms a second receiving groove. The photoelectric element group is received in the second receiving groove. A first reflecting portion is concavely formed on one side of the first receiving groove toward the circuit board, and a lens group is protruded from the second receiving groove toward one side of the circuit board. An optical fiber guide hole is formed on one side of the body. A second reflecting portion is recessed on one side of the second receiving groove. The light-transmitting group is disposed in the first receiving groove of the body. A light-transmitting surface is formed on one surface of the light-transmitting group toward the first reflection portion, and the light-transmitting group forms a total-reflection surface on the surface away from the light-transmitting surface. It is used to refract light to the second reflection part or to refract light to the total reflection surface.

Description

Fiber optic module

The invention is applied to the technical field of light transmission, in particular to an optical fiber module with a function of splitting and condensing light.

The optical fiber connector shown in the US patent US6941047 is a glass block attached with a plurality of thin film filters (200a-200d) on one side. The thin film filters correspond to a plurality of chirps (230), and light enters the glass through the outside. After the block, it is reflected by the thin-film filter after passing through the plutonium. However, because the plutonium and the thin-film filter are not closely adhered, a gap is formed. Therefore, the beam is easy to pass through multiple media during transmission. This results in energy loss, and because the angle of the chirp is fixed, the amount of refraction of beams with different wavelengths when they penetrate the chirp will also be different, which also increases the energy loss of the beam.

The inventors have taken into account that the aforementioned optical fiber module is actually used in practice, and there is still a lack of excessive energy loss, and the invention improves the invention.

The main object of the present invention is to provide an optical fiber module with low loss energy.

In order to achieve the aforementioned object of the present invention, the technical means used in the present invention is to provide an optical fiber module, which includes a circuit board, a photoelectric element group, a control element group, a body and a light transmission group. Photoelectric components are arranged on the circuit board, and control components are arranged on the circuit One side of the board is used to control the photoelectric element group. The body is arranged on the circuit board and is located on the same side as the photoelectric element group. A first receiving groove is formed on the side of the body opposite to the photoelectric element group, and a second receiving groove is formed on the other side. The optoelectronic component group is accommodated in the second accommodating groove. The body is provided with a first reflecting portion recessed from the first accommodating groove toward the circuit board. The body is protruded from the second accommodating groove toward one side of the circuit board to form a lens group. The group is aligned with the first reflecting portion. A fiber guide hole is formed on one side of the body. A convergent lens is formed on the inner bottom surface of the fiber guide hole. The body is concave on the second receiving slot and adjacent to one of the convergent lenses. A second reflecting portion is provided, and the second reflecting portion is formed with a second reflecting surface. The condensing lens corresponds to the second reflecting surface. The light transmitting group is disposed in the first receiving groove of the body, and the light transmitting group reflects toward the first. A light-transmitting surface is formed on one of the surfaces, and the light-transmitting surface corresponds to the first reflecting portion of the body, and the light-transmitting group forms a total-reflecting surface on a surface away from the light-transmitting surface, for the total-reflecting surface to refract. Light to Two light rays refracted by the reflection surface or the reflection surface to the second total reflection surface.

In an embodiment of the present invention, in the above-mentioned optical fiber module, the first reflection part is formed with a plurality of first reflection areas, each first reflection area is formed into an inverted triangle on a cross section, and each first reflection area is formed on one side respectively. There is a first reflecting surface.

In an embodiment of the present invention, in the aforementioned optical fiber module, the second reflecting surface of the second reflecting portion is inclined.

In an embodiment of the present invention, in the aforementioned optical fiber module, the light transmission group further includes a plurality of light transmission members.

In an embodiment of the present invention, in the above-mentioned optical fiber module, the light-transmitting surfaces of the light-conducting members can penetrate light with different wavelengths.

In an embodiment of the present invention, the above creation name, wherein the light transmitting member Is a filter.

In an embodiment of the present invention, in the aforementioned optical fiber module, the photoelectric element group further includes a plurality of photoelectric elements.

In an embodiment of the present invention, in the above-mentioned optical fiber module, the photoelectric element is a light-emitting element, respectively.

In an embodiment of the present invention, in the above-mentioned optical fiber module, the light emitting element is a side-emitting laser element or a side-emitting laser element.

In an embodiment of the present invention, in the aforementioned optical fiber module, the photoelectric element is a light detection element.

1‧‧‧fiber optic module

10‧‧‧Circuit Board

20‧‧‧Control element group

201 ~ 204‧‧‧Control element

30‧‧‧Photoelectric element group

301 ~ 304‧‧‧Photoelectric element

40‧‧‧ Ontology

41‧‧‧First receiving slot

42‧‧‧Second accommodation slot

43‧‧‧First reflection section

431 ~ 434‧‧‧The first reflection area

441 ~ 444‧‧‧First reflecting surface

45‧‧‧ lens group

451 ~ 454‧‧‧lens

46‧‧‧ fiber guide hole

47‧‧‧Converging lens

48‧‧‧Second reflection section

481‧‧‧Second reflective surface

50‧‧‧light transmission group

501 ~ 505‧‧‧Light Conductor

511 ~ 515‧‧‧ penetration surface

521 ~ 525‧‧‧ Total reflection surface

60‧‧‧optical fiber

L, L’ ‧‧‧ condensed light

L1 ~ L4, L1 ’~ L4’‧‧‧‧different wavelength light

FIG. 1 is a schematic three-dimensional exploded appearance diagram of the optical fiber module of the present invention.

Fig. 2 is a schematic three-dimensional sectional view of the optical fiber module of the present invention.

FIG. 3 is an exploded schematic cross-sectional view of the optical fiber module of the present invention.

FIG. 4 is a light path diagram of the first use state of the optical fiber module of the present invention.

Fig. 5 is a light path diagram of the second use state of the optical fiber module of the present invention.

Please refer to FIG. 1 to FIG. 3, the first embodiment of the optical fiber module 1 of the present invention includes a circuit board 10, a control element group 20, a photoelectric element group 30, a body 40 and One light transmission group 50.

The circuit board is provided with a control element group 20 and a photoelectric element group 30. The control element group 20 is used to control the photoelectric element group 30. In this embodiment, the control element group 20 has four control elements 201 to 204. The photoelectric element group 30 is 4 light emitters 301 ~ 3 04. The light emitters 301 to 304 can be laser light, light emitting diodes, etc., but are not limited thereto. The photoelectric elements 301 to 304 can provide light L1 to L4 with different wavelengths.

The main body 40 is disposed on the circuit board 10 and is located on the same side as the photoelectric element group 30. In this embodiment, the main body 40 is formed with a first receiving groove 41 on one side opposite to the photoelectric element group 30 and a second receiving groove is formed on the other side. The grooves 42 and the photoelectric element group 30 and the control element group 20 are accommodated in the second accommodating groove 42. The body 40 has a first reflecting portion 43 recessed from the surface of the first accommodating groove 41 toward the circuit board 10, as shown in the figure. The first reflecting portion 43 shown in the plane is formed with four first reflecting regions 431 to 434. Each of the first reflecting regions 431 to 434 forms an inverted triangle on the cross section, and each of the first reflecting regions 431 to 434 has a first reflecting region on one side. A reflecting surface 441 to 444, and each of the first reflecting surfaces 441 to 444 respectively corresponds to the photoelectric elements 301 to 304; the body 40 is protruded from the second receiving groove 42 toward one surface of the circuit board 10 to form a lens group 45. In this embodiment, In the lens group 45, lenses 451 to 4544 are included. Each of the lenses 451 to 454 is aligned with the opposite first reflecting surface 441 to 444. Each of the lenses 451 to 454 can be a collimating lens. The body 40 has an optical fiber formed on one side. Guide hole 46, fiber guide hole 46 can be passed through an external optical fiber 60, the body 40 is inside the fiber guide hole 46 A converging lens 47 is formed protruding from the bottom surface. A second reflecting portion 48 is recessed from the main body 40 at the position of the second receiving groove 42 and adjacent to one of the converging lenses 47. The second reflecting portion 48 is formed toward the first receiving groove 41. The second reflecting surface 481 is inclined.

The light-transmitting group 50 is disposed in the first receiving slot 41 of the body. The light-transmitting group 50 includes a plurality of light-transmitting members. In this embodiment, the light-transmitting group 50 includes five light-transmitting members 501 to 505. Pieces 501 to 505 are respectively formed with a penetrating surface 511 to 515 toward one side of the photovoltaic element group 30, and the penetrating surfaces 511 to 514 can filter different waves Long light, which allows light of a specific wavelength to enter or exit. The light-conducting members 501 to 505 are different from the transmissive surfaces 511 to 515. A total reflection surface 521 to 525 is formed, and the total reflection surfaces 521 to 525 are used to reflect the incoming light. Conducts the light inside 50, wherein the light-conducting members 501-505 are a filter.

When light is transmitted, as shown in FIG. 4, light rays L1 to L4 with different wavelengths are emitted by different photoelectric elements 301 to 304, collimated by collimating lenses 451 to 454, and then passing through the first of each of the first reflection regions 431 to 434. The reflecting surfaces 441 to 444 are refracted and enter the inside of the light conducting members 501 to 505. The light rays L1 to L4 enter the inside of the light conducting members 501 to 504 and are reflected by the total reflection surfaces 521 to 525. The light rays L1 to L4 of different wavelengths are transmitted by the light conducting members. 505 forms a convergent light L after passing through, the refracted light L is refracted by the second reflecting surface 481 of the second reflecting portion 48, collimated by the converging lens 47, and then passed through the optical fiber guide hole 46 into the optical fiber 60.

Please refer to FIG. 5, another embodiment of the optical fiber module 1 of the present invention. Most of the structures are similar to the first embodiment, and the second embodiment uses the same component names as the first embodiment. And labels. The only difference is that the photoelectric element group 30 is a light detector, and each of the light detectors 301 to 304 is used to detect the intensity of light output through each of the light transmitting members 501 to 504.

When the light is transmitted, the light L ′ is emitted by the optical fiber 60 through the convergent lens 47 and refracted by the second reflection surface 481 of the second reflection portion 48, and then enters the light transmission group 50 through the light transmission member 505. After the inside of 50 is reflected by the total reflection surfaces 525 to 521 of the light-conducting members 505 to 501, the light rays L1 'to L4' of different wavelengths in the aggregated light L 'pass through the penetration surfaces 514 to 11, respectively, and the light rays L1' to L4 'pass Lens 454 ~ 4 After 51 convergence, they are respectively irradiated on the photoelectric elements 304-301, so that the intensity of light with different wavelengths L1 '~ L4' can be detected.

The present invention has been described by the above-mentioned embodiments and variations. All the embodiments and variations of the present invention are merely exemplary. Based on the essential spirit and scope of the present invention, the various variations of the creative name including the above features are the present. Covered by invention.

Claims (10)

An optical fiber module including: a circuit board; a photoelectric element group, the photoelectric element is disposed on the circuit board; a control element group, the control element is disposed on one side of the circuit board, and is used to control the photoelectricity Element group; a body, which is arranged on the circuit board and is located on the same side as the optoelectronic element group, a first receiving groove is formed on one side of the body opposite to the optoelectronic element group, and a second receiving groove is formed on the other side The photoelectric element group is accommodated in the second accommodating slot, the body is provided with a first reflecting part recessed on the side of the first accommodating slot facing the circuit board, and the body faces the circuit board in the second accommodating slot One surface protrudes to form a lens group, the lens group is aligned with the first reflecting portion, the body is formed with a fiber guide hole on one side, and the body protrudes to form a convergent lens on the inner bottom surface of the fiber guide hole, and the body A second reflecting portion is recessed at a position of the second receiving groove and adjacent to one side of the converging lens, and the second reflecting portion is formed with a second reflecting surface, and the converging lens corresponds to the second reflecting surface; and Light transmission The light transmitting group is disposed in the first receiving groove of the body, and the light transmitting group forms a light transmitting surface toward one surface of the first reflecting portion, and the light transmitting surface corresponds to the first receiving portion of the body A reflecting portion, and the light transmitting group forms a total reflection surface on a surface away from the light transmission surface, and the total reflection surface is used to refract light to the second reflection surface or the second reflection surface to refract light to the total reflection surface Reflective surface. The optical fiber module according to claim 1, wherein the first reflection portion is formed with a plurality of first reflection areas, the first reflection areas are respectively formed into inverted triangles on the cross section, and the first reflection areas are respectively formed on one side. There is a first reflecting surface. The optical fiber module according to claim 1, wherein the second reflecting surface of the second reflecting portion is inclined. The optical fiber module according to claim 1, wherein the light transmission group further includes a plurality of light transmission elements. The optical fiber module according to claim 4, wherein the light-transmitting surfaces of the light-conducting members can penetrate light of different wavelengths. The optical fiber module according to claim 5, wherein the light conducting member is a filter. The optical fiber module according to claim 1, wherein the photovoltaic element group further includes a plurality of photovoltaic elements. The optical fiber module according to claim 7, wherein the photoelectric elements are a light emitting element, respectively. The optical fiber module according to claim 8, wherein the light emitting elements are a side-emitting laser element or a side-emitting laser element. The optical fiber module according to claim 7, wherein the photoelectric elements are light detecting elements.