Light receiving end and 1.6 T2*FR4 light engine

Abstract

The invention relates to a light receiving end, which is characterized in that a light emitting side of a Z-blcom component is coupled with a concave reflector fixed with the light emitting side, an array detector is positioned below the concave reflector, and the distance between two adjacent channels in the array detector is 0.25 mm; the concave reflecting mirror is provided with a first reflecting concave surface, a second reflecting concave surface, a third reflecting concave surface and a fourth reflecting concave surface which are obliquely distributed and are respectively coupled with the four light outlets of the Z-blcom assembly one by one; and the first reflection concave surface, the second reflection concave surface, the third reflection concave surface and the fourth reflection concave surface are used for turning four paths of horizontal collimated light with the spacing of 0.5 mm emitted from the Z-blcok assembly in the vertical direction and the horizontal direction respectively and then converging the four paths of horizontal collimated light on photosensitive surfaces of four channels of the array detector. The invention relates to a 1.6 T 2 * FR4 light engine, which comprises two light receiving ends. The beneficial effects are that the cost is effectively reduced, the size of the light receiving end is small, and the packaging difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light engine, in particular to a light receiving end and a 1.6T 2xFR4 light engine. BACKGROUND

[0002] The light receiving end used by the traditional 1.6T 2xFR4 light engine adopts a mainstream scheme of Z-block+filter (i.e. Z-block assembly) to ensure performance. Since the insertion loss of AWG is large, it cannot be used in the 1.6T 2xFR4 light engine. The scheme shown in Figure 1 、 Figure 2 is a 1.6T 2xFR4 light engine (only one light receiving end is shown in the figure, and two light receiving ends are distributed side by side in actual application) using the Z-block assembly scheme, which includes a Z-block assembly, an array converging lens, a 45° prism, and an array detector. The light inlet of the Z-block assembly is coupled with an optical fiber, the end of the optical fiber is sleeved with a glass capillary tube, a collimating lens fixed with the glass capillary tube is coupled between the optical fiber and the light inlet of the Z-block assembly, the array converging lens is coupled with each light outlet of the Z-block assembly, the 45° prism is coupled with the array converging lens, and the array detector is coupled with the reflecting surface of the 45° prism. The problems of the scheme are as follows: the Z-block and the filter have an inclination angle, and due to cold processing, edge collapse, glue overflow, etc., the minimum channel spacing that the Z-block can currently achieve is 0.5mm. There are two problems with the 0.5mm spacing: 1) The channel spacing of the array converging lens, the 45° prism, and the array detector all correspond to 0.5mm, so the overall size of the light receiving end is too large, which causes difficulty in packaging in the 1.6T 2xFR4 light engine; 2) The array detector (array PD) of single wave 200G is very expensive, and the array detector with a channel spacing of 0.5mm is more than 1 times more expensive than the array detector with a channel spacing of 0.25mm. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a light receiving end and a 1.6T 2xFR4 light engine to overcome the deficiencies in the prior art.

[0004] The technical solution of the present application to solve the above technical problem is as follows: The application discloses an optical receiving end, which comprises a Z-blcok component and an array detector, the light exit side of the Z-blcok component is coupled with a concave mirror fixed therewith, the array detector is arranged below the concave mirror, the interval between two adjacent channels of the array detector is 0.25 mm, the concave mirror is provided with a first reflection concave surface, a second reflection concave surface, a third reflection concave surface and a fourth reflection concave surface which are distributed in a tilt manner and are coupled with four light exit ports of the Z-blcok component respectively, the first reflection concave surface, the second reflection concave surface, the third reflection concave surface and the fourth reflection concave surface converge the four horizontal collimated lights with an interval of 0.5 mm on the light sensitive surfaces of the four channels of the array detector after turning the horizontal collimated lights in the vertical direction and the horizontal direction respectively.

[0005] The application has the beneficial effects that: a concave mirror is introduced, the first reflection concave surface, the second reflection concave surface, the third reflection concave surface and the fourth reflection concave surface are designed on the concave mirror, then the first reflection concave surface, the second reflection concave surface, the third reflection concave surface and the fourth reflection concave surface converge the horizontal collimated light and turn the horizontal collimated light in the vertical direction and the horizontal direction, the vertical direction turning makes the horizontal collimated light of the Z-blcok component tilt downward, the horizontal direction turning makes the light with an interval of 0.5 mm tilt in the middle, and the two together finally make the interval of the four convergence points be 0.25 mm, so that the array detector with an interval of 0.25 mm can be matched, the array detector with an interval of 0.25 mm is cheap, so the cost is effectively reduced, meanwhile, the width of the concave mirror can be smaller than that of the array convergence lens and the 45° reflection prism in the prior art, so the size of the whole optical receiving end can be reduced, the packaging difficulty in the 1.6T 2xFR4 light engine is reduced, and the concave mirror has the following effects: making the collimated light become the convergence point (equivalent to the array convergence lens), and turning the light path (equivalent to the 45° reflection prism).

[0006] On the basis of the above technical scheme, the application can be further improved as follows.

[0007] Further, the distance between the reflection point of the first reflection concave surface and the light sensitive surface of the first channel of the array detector is the same as the distance between the reflection point of the fourth reflection concave surface and the light sensitive surface of the fourth channel of the array detector, the curvature radius of the first reflection concave surface is the same as that of the fourth reflection concave surface, and the first reflection concave surface and the fourth reflection concave surface are mirror image distributed with the center line between the second channel and the third channel as the symmetry line; the distance between the reflection point of the second reflection concave surface and the light sensitive surface of the second channel of the array detector is the same as the distance between the reflection point of the third reflection concave surface and the light sensitive surface of the third channel of the array detector, the curvature radius of the second reflection concave surface is the same as that of the third reflection concave surface, and the second reflection concave surface and the third reflection concave surface are mirror image distributed with the center line between the second channel and the third channel as the symmetry line.

[0008] Further, the distance between the reflection point of the first reflection concave surface and the photosensitive surface of the first channel of the array detector is 0.5 mm, and the curvature radius of the first reflection concave surface is 1 mm; the distance between the reflection point of the fourth reflection concave surface and the photosensitive surface of the fourth channel of the array detector is 0.5 mm, and the curvature radius of the fourth reflection concave surface is 1 mm; the distance between the reflection point of the second reflection concave surface and the photosensitive surface of the second channel of the array detector is 0.33 mm, and the curvature radius of the second reflection concave surface is 0.66 mm; the distance between the reflection point of the third reflection concave surface and the photosensitive surface of the third channel of the array detector is 0.33 mm, and the curvature radius of the third reflection concave surface is 0.66 mm.

[0009] Further, the angle between the reflection direction of the first reflection concave surface and the horizontal direction is 128.58°, and the angle between the reflection direction of the first reflection concave surface and the vertical direction is 105°; the angle between the reflection direction of the fourth reflection concave surface and the horizontal direction is -128.58°, and the angle between the reflection direction of the fourth reflection concave surface and the vertical direction is -105°; the angle between the reflection direction of the second reflection concave surface and the horizontal direction is 156.61°, and the angle between the reflection direction of the second reflection concave surface and the vertical direction is 105°; the angle between the reflection direction of the third reflection concave surface and the horizontal direction is -156.61°, and the angle between the reflection direction of the third reflection concave surface and the vertical direction is -105°.

[0010] The above-mentioned multi-step beneficial effect is that the optical path distance can be changed from 0.5 mm to 0.25 mm, so that the Z-blcok assembly with a distance of 0.5 mm and the array detector with a distance of 0.25 mm can be used together.

[0011] Further, the concave mirror covers at least part of the array detector.

[0012] The above-mentioned further beneficial effect is that the array detector can be protected to avoid being accidentally touched and damaged.

[0013] Further, the concave mirror is fixedly attached to the upper surface of the Z-blcok in the Z-blcok assembly and covers the optical filter in the Z-blcok assembly.

[0014] The above-mentioned further beneficial effect is that the optical filter can be protected to avoid being accidentally touched and damaged.

[0015] Further, the light inlet of the Z-blcok assembly is coupled with the optical fiber, and a collimating lens is coupled between the optical fiber and the light inlet of the Z-blcok assembly.

[0016] Further, the end of the optical fiber is sleeved with a glass capillary, and the collimating lens is fixedly attached to the glass capillary.

[0017] Based on the above technical scheme, the application further provides a 1.6T 2xFR4 light engine, comprising two light receiving ends which are distributed side by side.

[0018] The above further beneficial effects are low cost, small size of the light receiving end, and reduced packaging difficulty of the 1.6T 2xFR4 light engine.

[0019] Further, the 1.6T 2xFR4 light engine further comprises a PCB board and a substrate fixed on the PCB board, the Z-blcok assembly in the light receiving end is fixed on the substrate, and the array detector in the light receiving end is fixed on the PCB board. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a top view of a 1.6T 2xFR4 light engine in the prior art; Figure 2 is a front view of a 1.6T 2xFR4 light engine in the prior art; Figure 3 is a top view of a light receiving end in the application; Figure 4 is a front view of a light receiving end in the application; Figure 5 is an optical path diagram of a light receiving end in the application; Figure 6 is a top view of a 1.6T 2xFR4 light engine in the application; Figure 7 is a front view of a 1.6T 2xFR4 light engine in the application.

[0021] In the drawings, the components represented by each reference numeral are listed as follows: 1, light receiving end, 110, Z-blcok assembly, 111, Z-blcok, 112, optical filter, 120, array detector, 130, concave mirror, 131, first reflecting concave surface, 132, second reflecting concave surface, 133, third reflecting concave surface, 134, fourth reflecting concave surface, 140, optical fiber, 150, collimating lens, 160, glass capillary tube, 2, PCB board, 3, substrate. DETAILED DESCRIPTION

[0022] The principles and characteristics of the application are described below in conjunction with the drawings, and the examples are only used to explain the application and not to limit the scope of the application.

[0023] Example 1 As shown in Figure 3 , Figure 4 , Figure 5 A light receiving end comprises: The Z-blcok assembly 110 and the array detector 120, in the embodiment, the Z-blcok assembly 110 has four light exit channels, the distance between the adjacent two light exit channels of the four light exit channels of the Z-blcok assembly 110 is 0.5mm, that is, still consistent with the prior art; the array detector 120 has four channels, the distance between the adjacent two channels of the four channels of the array detector 120 is 0.25mm; the light exit side of the Z-blcok assembly 110 is coupled with a concave mirror 130, the concave mirror 130 is fixed with the Z-blcok assembly 110, and the array detector 120 is below the concave mirror 130, which is described by taking the view angle as an example; The concave mirror 130 has a first reflection concave 131, a second reflection concave 132, a third reflection concave 133 and a fourth reflection concave 134 distributed in a tilt manner, the first reflection concave 131 is coupled with the light exit port of the first light exit channel in the Z-blcok assembly 110, the second reflection concave 132 is coupled with the light exit port of the second light exit channel in the Z-blcok assembly 110, the third reflection concave 133 is coupled with the light exit port of the third light exit channel in the Z-blcok assembly 110, and the fourth reflection concave 134 is coupled with the light exit port of the fourth light exit channel in the Z-blcok assembly 110, that is, the first reflection concave 131, the second reflection concave 132, the third reflection concave 133 and the fourth reflection concave 134 are respectively coupled with the four light exit ports of the Z-blcok assembly 110; the first reflection concave 131, the second reflection concave 132, the third reflection concave 133 and the fourth reflection concave 134 respectively redirect the four horizontal collimated lights with a distance of 0.5mm emitted from the Z-blcok assembly 110 in the vertical direction and the horizontal direction and converge on the light sensitive surfaces of the four channels of the array detector 120, that is, it can be understood that: the first reflection concave 131 simultaneously redirects the horizontal collimated light emitted from the light exit port of the first light exit channel of the Z-blcok assembly 110 in the vertical direction and the horizontal direction and converges on the light sensitive surface of the first channel of the array detector 120; the second reflection concave 132 simultaneously redirects the horizontal collimated light emitted from the light exit port of the second light exit channel of the Z-blcok assembly 110 in the vertical direction and the horizontal direction and converges on the light sensitive surface of the second channel of the array detector 120; the third reflection concave 133 simultaneously redirects the horizontal collimated light emitted from the light exit port of the third light exit channel of the Z-blcok assembly 110 in the vertical direction and the horizontal direction and converges on the light sensitive surface of the third channel of the array detector 120; and the fourth reflection concave 134 simultaneously redirects the horizontal collimated light emitted from the light exit port of the fourth light exit channel of the Z-blcok assembly 110 in the vertical direction and the horizontal direction and converges on the light sensitive surface of the fourth channel of the array detector 120; Since the interval between two adjacent channels of the array detector 120 is 0.25 mm, and the interval between two adjacent light exit channels of the Z-blcok assembly 110 is 0.5 mm, taking the viewing angle as an example, the first reflecting concave surface 131 turns the horizontal collimated light in the vertical direction and the horizontal direction to the light-sensitive surface of the first channel of the array detector 120, the second reflecting concave surface 132 turns the horizontal collimated light in the vertical direction and the horizontal direction to the light-sensitive surface of the second channel of the array detector 120, the third reflecting concave surface 133 turns the horizontal collimated light in the vertical direction and the horizontal direction to the light-sensitive surface of the third channel of the array detector 120, and the fourth reflecting concave surface 134 turns the horizontal collimated light in the vertical direction and the horizontal direction to the light-sensitive surface of the fourth channel of the array detector 120, that is, the four light paths between the concave mirror 130 and the array detector 120 are beam ports, and the beam port end is close to the array detector 120. The first reflecting concave surface 131, the second reflecting concave surface 132, the third reflecting concave surface 133, and the fourth reflecting concave surface 134 can converge the horizontal collimated light, or turn the horizontal collimated light in the vertical direction and the horizontal direction, wherein the vertical direction turning can make the horizontal collimated light of the Z-blcok assembly 110 downwardly inclined, and the horizontal direction turning can make the 0.5 mm interval light inclined to the middle by an angle, and the two together finally make the interval of the four convergence points 0.25 mm, so as to match the array detector 120 with an interval of 0.25 mm.

[0024] A concave mirror 130 is introduced, and the first reflecting concave surface 131, the second reflecting concave surface 132, the third reflecting concave surface 133, and the fourth reflecting concave surface 134 are designed on the concave mirror 130, and then the first reflecting concave surface 131, the second reflecting concave surface 132, the third reflecting concave surface 133, and the fourth reflecting concave surface 134 converge the horizontal collimated light and turn the horizontal collimated light in the vertical direction and the horizontal direction, wherein the vertical direction turning makes the horizontal collimated light of the Z-blcok assembly 110 downwardly inclined, and the horizontal direction turning makes the 0.5 mm interval light inclined to the middle by an angle, and the two together finally make the interval of the four convergence points 0.25 mm, so as to match the array detector 120 with an interval of 0.25 mm, and the array detector 120 with an interval of 0.25 mm is cheap, so the cost is effectively reduced, and the width of the concave mirror 130 can be smaller than that of the array converging lens and the 45° reflecting prism in the prior art, so the size of the whole light receiving end 1 can be reduced, thereby reducing the packaging difficulty in the 1.6T 2×FR4 light engine, and the concave mirror 130 also has the following effects: making the collimated light into convergence points (equivalent to the array converging lens), and turning the light path (equivalent to the 45° reflecting prism).

[0025] Example 2 As Figure 3 , Figure 4 , Figure 5 The present embodiment is a further improvement on the basis of Example 1, as follows: The distance from the reflection point of the first reflecting concave surface 131 to the photosensitive surface of the first channel of the array detector 120 is the same as the distance from the reflection point of the fourth reflecting concave surface 134 to the photosensitive surface of the fourth channel of the array detector 120, the radius of curvature of the first reflecting concave surface 131 is the same as the radius of curvature of the fourth reflecting concave surface 134, and the first reflecting concave surface 131 and the fourth reflecting concave surface 134 can be understood as mirror image distribution with the center line of the second channel and the third channel as the symmetry line; the distance from the reflection point of the second reflecting concave surface 132 to the photosensitive surface of the second channel of the array detector 120 is the same as the distance from the reflection point of the third reflecting concave surface 133 to the photosensitive surface of the third channel of the array detector 120, the radius of curvature of the second reflecting concave surface 132 is the same as the radius of curvature of the third reflecting concave surface 133, and the second reflecting concave surface 132 and the third reflecting concave surface 133 can be understood as mirror image distribution with the center line of the second channel and the third channel as the symmetry line.

[0026] Further, the distance from the reflection point of the first reflecting concave surface 131 to the photosensitive surface of the first channel of the array detector 120 is 0.5 mm, the radius of curvature of the first reflecting concave surface 131 is 1 mm, the calculation method is as follows: focal length F = radius of curvature / 2, the focal length is the distance from the reflection point of the first reflecting concave surface 131 to the photosensitive surface of the first channel of the array detector 120; the distance from the reflection point of the fourth reflecting concave surface 134 to the photosensitive surface of the fourth channel of the array detector 120 is 0.5 mm, the radius of curvature of the fourth reflecting concave surface 134 is 1 mm, the calculation method is the same as the foregoing, so it is not described in detail here; the distance from the reflection point of the second reflecting concave surface 132 to the photosensitive surface of the second channel of the array detector 120 is 0.33 mm, the radius of curvature of the second reflecting concave surface 132 is 0.66 mm, the calculation method is the same as the foregoing, so it is not described in detail here; the distance from the reflection point of the third reflecting concave surface 133 to the photosensitive surface of the third channel of the array detector 120 is 0.33 mm, the radius of curvature of the third reflecting concave surface 133 is 0.66 mm, the calculation method is the same as the foregoing, so it is not described in detail here.

[0027] The angle between the reflection direction of the first reflecting concave surface 131 and the horizontal direction is 128.58°, and the angle between the reflection direction of the first reflecting concave surface 131 and the vertical direction is 105°; the angle between the reflection direction of the fourth reflecting concave surface 134 and the horizontal direction is -128.58° (the positive and negative of the horizontal direction angle are defined by the direction relative to the horizontal line, for example: the horizontal line is the positive direction, the upward direction is the negative direction); the angle between the reflection direction of the second reflecting concave surface 132 and the horizontal direction is -128.58°, and the angle between the reflection direction of the second reflecting concave surface 132 and the vertical direction is 105°; the angle between the reflection direction of the third reflecting concave surface 133 and the horizontal direction is -128.58°, and the angle between the reflection direction of the third reflecting concave surface 133 and the vertical direction is 105°. Figure 1As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°.

[0028] The distance between the light paths can be changed from 0.5 mm to 0.25 mm, so that the Z-blcok assembly 110 with a distance of 0.5 mm can be matched with the array detector 120 with a distance of 0.25 mm.

[0029] Of course, when the concave mirror 130 is applied to emitting light, the convergent light can be changed into collimated light, that is, the light path is reversible.

[0030] Embodiment 3 As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°. Figure 3 、 Figure 4 、 Figure 5 As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°. The concave mirror 130 covers at least part of the array detector 120, which can protect the array detector 120 from being damaged by accidental touch.

[0031] Embodiment 4 As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°. Figure 3 、 Figure 4 、 Figure 5 As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°. The concave mirror 130 is bonded and fixed on the upper surface of the Z-blcok 111 in the Z-blcok assembly 110 and covers the optical filter 112 in the Z-blcok assembly 110, which can protect the optical filter 112 from being damaged by accidental touch.

[0032] Embodiment 5 As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°. Figure 3 、 Figure 4 、 Figure 5 As shown in the perspective view, the first reflecting concave surface 131 makes the light path deviate upward, defined as positive, the fourth reflecting concave surface 134 makes the light path deviate downward, defined as negative (the same for the following), the angle between the reflecting direction of the fourth reflecting concave surface 134 and the vertical direction is -105° (the positive and negative of the angle between the vertical direction are defined according to the different directions of the perpendicular line), the angle between the reflecting direction of the second reflecting concave surface 132 and the horizontal direction is 156.61°, the angle between the reflecting direction of the second reflecting concave surface 132 and the vertical direction is 105°, the angle between the reflecting direction of the third reflecting concave surface 133 and the horizontal direction is -156.61°, and the angle between the reflecting direction of the third reflecting concave surface 133 and the vertical direction is -105°. The light inlet of the Z-blcok component 110 is coupled with the optical fiber 140, and a collimating lens 150 is coupled between the optical fiber 140 and the light inlet of the Z-blcok component 110. The end of the optical fiber 140 is sleeved with a glass capillary 160, and the collimating lens 150 is fixed with the glass capillary 160. That is, the received light of the optical fiber 140 is coupled into the Z-blcok component 110 through the collimating lens 150, and is resolved into four paths by the Z-blcok component 110.

[0033] For the above embodiments, the concave mirror 130 can be made of metal material.

[0034] Embodiment 6 As shown in Figures 3 to 7 a 1.6T 2xFR4 light engine, comprising: two light receiving ends 1 as in any one of the embodiments 1-5, and the two light receiving ends 1 are distributed side by side.

[0035] Further, the 1.6T 2xFR4 light engine further comprises: a PCB board 2 and a substrate 3 fixed on the PCB board 2, the Z-blcok component 110 in the light receiving end 1 is fixed on the substrate 3, and the array detector 120 in the light receiving end 1 is fixed on the PCB board.

[0036] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An optical receiving end, characterized by The application relates to a Z-blcok assembly (110) and an array detector (120), the light exit side of the Z-blcok assembly (110) is coupled with a concave mirror (130) fixed therewith, the array detector (120) is arranged below the concave mirror (130), the interval between two adjacent channels of the array detector (120) is 0.25 mm, the concave mirror (130) is provided with a first reflection concave mirror (131), a second reflection concave mirror (132), a third reflection concave mirror (133) and a fourth reflection concave mirror (134) which are arranged in a tilt distribution and are coupled with four light exit ports of the Z-blcok assembly (110) one by one, the first reflection concave mirror (131), the second reflection concave mirror (132), the third reflection concave mirror (133) and the fourth reflection concave mirror (134) respectively redirect and converge the four horizontal collimated lights with an interval of 0.5 mm emitted from the Z-blcok assembly (110) in the vertical direction and the horizontal direction on the light sensitive surfaces of four channels of the array detector (120). The distance between the reflection point of the first reflection concave mirror (131) and the light sensitive surface of the first channel of the array detector (120) is the same as the distance between the reflection point of the fourth reflection concave mirror (134) and the light sensitive surface of the fourth channel of the array detector (120), the curvature radius of the first reflection concave mirror (131) is the same as the curvature radius of the fourth reflection concave mirror (134), and the first reflection concave mirror (131) and the fourth reflection concave mirror (134) are mirror-distributed with the center line between the second channel and the third channel as the symmetry line; the distance between the reflection point of the second reflection concave mirror (132) and the light sensitive surface of the second channel of the array detector (120) is the same as the distance between the reflection point of the third reflection concave mirror (133) and the light sensitive surface of the third channel of the array detector (120), the curvature radius of the second reflection concave mirror (132) is the same as the curvature radius of the third reflection concave mirror (133), and the second reflection concave mirror (132) and the third reflection concave mirror (133) are mirror-distributed with the center line between the second channel and the third channel as the symmetry line.

2. The optical receiving end of claim 1, wherein, The distance between the reflection point of the first reflection concave mirror (131) and the light sensitive surface of the first channel of the array detector (120) is 0.5 mm, and the curvature radius of the first reflection concave mirror (131) is 1 mm; the distance between the reflection point of the fourth reflection concave mirror (134) and the light sensitive surface of the fourth channel of the array detector (120) is 0.5 mm, and the curvature radius of the fourth reflection concave mirror (134) is 1 mm; the distance between the reflection point of the second reflection concave mirror (132) and the light sensitive surface of the second channel of the array detector (120) is 0.33 mm, and the curvature radius of the second reflection concave mirror (132) is 0.66 mm; the distance between the reflection point of the third reflection concave mirror (133) and the light sensitive surface of the third channel of the array detector (120) is 0.33 mm, and the curvature radius of the third reflection concave mirror (133) is 0.66 mm.

3. The optical receiving end of claim 2, wherein, ​ 4. The optical receiving end of claim 1 or 2 or 3, characterized in that, The angle between the reflection direction of the first reflecting concave surface (131) and the horizontal direction is 128.58°, and the angle between the reflection direction of the first reflecting concave surface (131) and the vertical direction is 105°; the angle between the reflection direction of the fourth reflecting concave surface (134) and the horizontal direction is -128.58°, and the angle between the reflection direction of the fourth reflecting concave surface (134) and the vertical direction is -105°; the angle between the reflection direction of the second reflecting concave surface (132) and the horizontal direction is 156.61°, and the angle between the reflection direction of the second reflecting concave surface (132) and the vertical direction is 105°; the angle between the reflection direction of the third reflecting concave surface (133) and the horizontal direction is -156.61°, and the angle between the reflection direction of the third reflecting concave surface (133) and the vertical direction is -105°.

5. The optical receiving terminal according to claim 1, wherein The concave mirror (130) covers at least part of the array detector (120).

6. The optical receiving end of claim 1, wherein, The concave mirror (130) is fixed on the upper surface of the Z-blcok (111) in the Z-blcok assembly (110) and covers the optical filter (112) in the Z-blcok assembly (110).

7. The optical receiving terminal according to claim 1, wherein The light inlet of the Z-blcok assembly (110) is coupled with the optical fiber (140), and a collimating lens (150) is coupled between the optical fiber (140) and the light inlet of the Z-blcok assembly (110).

8. The optical receiving terminal according to claim 7, wherein The end of the optical fiber (140) is sleeved with a glass capillary tube (160), and the collimating lens (150) is fixed with the glass capillary tube (160).

9. A 1.6T 2 x FR4 light engine characterized in that, The application further discloses a light receiving end and a light receiving system. Two light receiving ends as claimed in any one of claims 1-8 are arranged side by side.

10. A 1.6T 2 x FR4 light engine according to claim 9, wherein, The application further discloses a light receiving system. The PCB board (2) and the substrate (3) fixed on the PCB board (2), the Z-blcok assembly (110) in the light receiving end is fixed on the substrate (3), and the array detector (120) in the light receiving end is fixed on the PCB board.

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