A manufacturing process for a c-lens for fiber collimators

Abstract

The application discloses a kind of C lens manufacturing processes for optical fiber collimator, comprising: glass blank is heated and fused, and the glass blank after melting is poured into C-lens lens mold;C-lens lens mold is cooled and formed, and initial lens is obtained;Initial lens is loaded on polishing detection device;The flat end surface of initial lens is divided into a center circle and a plurality of concentric ring light emitting area, and the light inlet area corresponding to each light emitting area is determined at the flat end surface of first standard lens;Turn on light source, each light emitting area is sequentially determined as light emitting detection area to carry out light intensity detection and obtain the light intensity corresponding to each light emitting area;According to the light intensity corresponding to each light emitting area, the first duration required for polishing initial lens is obtained;Initial lens is sent into polishing device for polishing for the first duration, and finished product C-lens lens is obtained.The application determines the roughness of initial lens by the corresponding optical characteristics of C-lens lens, and then carries out polishing for duration, to speed up the preparation efficiency of C-lens lens.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photoelectric instrument manufacturing, in particular to a manufacturing process of C-lens for optical fiber collimator. BACKGROUND

[0002] C-lens is a kind of collimating lens commonly used in optical fiber communication devices, which is often used to collimate the light emitted by optical fiber or couple the collimated light beam into optical fiber. Especially in optical passive devices, C-lens has a very wide application and a huge demand. Due to the huge demand, how to quickly prepare C-lens lens has become the focus of the industry.

[0003] Polishing and grinding is one of the key steps in the production and preparation of C-lens lens. The existing polishing of semi-finished C-lens lens generally adopts a fixed time length. In order to ensure that semi-finished C-lens lenses with different roughness can be fully polished, the fixed time length is generally set to be longer. Such polishing method reduces the polishing efficiency of C-lens lens. How to polish according to the time length for semi-finished C-lens lenses with different roughness has become a difficult problem. SUMMARY

[0004] The applicant found that if the roughness of a semi-finished C-lens lens is directly detected and the polishing time is determined according to the roughness, the preparation efficiency cannot be improved. Because the existing roughness detection of semi-finished C-lens lens also needs to consume a lot of time and requires professional instruments.

[0005] In view of the above part of the defects of the prior art, the technical problem to be solved by the present application is to provide a manufacturing process of C-lens for optical fiber collimator, which aims to determine the roughness of semi-finished C-lens lens according to the corresponding optical properties of C-lens lens, and then polish according to the time length, so as to speed up the preparation efficiency of C-lens lens.

[0006] To achieve the above purpose, the present application provides a manufacturing process of C-lens for optical fiber collimator, which comprises:

[0007] Step S1, melt the glass blank by heating, pour the molten glass blank into a C-lens lens mold, cool and shape the C-lens lens mold to obtain an initial lens;

[0008] Step S2, loading the initial lens on a polishing detection device; wherein the polishing detection device is in an environment without external light, the polishing detection device comprises a clamping wall for clamping the initial lens, the clamping wall clamps the initial lens around and the clamping wall adopts a light-absorbing material, a light source is arranged at a standard focal point corresponding to one side of a spherical end face of the initial lens, the light source emits scattered light towards the side of the spherical end face of the initial lens, a first standard lens is arranged on the side of a flat end face of the initial lens in parallel, and the flat end face of the first standard lens is opposite to the flat end face of the initial lens; a light intensity detection sensor is arranged at a focal point corresponding to the side of a spherical end face of the first standard lens, an out-light shielding mechanism is arranged at the flat end face of the initial lens, the out-light shielding mechanism shields the light out of the flat end face of the initial lens in a circular and / or annular manner; an in-light shielding mechanism is arranged at the flat end face of the first standard lens, and the in-light shielding mechanism shields the light into the flat end face of the first standard lens in a circular and / or annular manner;

[0009] Step S3, dividing the flat end face of the initial lens into a center circle and a plurality of concentric ring out-light areas, and determining an in-light area corresponding to each out-light area at the flat end face of the first standard lens; turning on the light source, sequentially determining each out-light area as an out-light detection area for light intensity detection; controlling the out-light shielding mechanism to shield other out-light areas except the out-light detection area, controlling the in-light shielding mechanism to shield other areas of the flat end face of the first standard lens except the in-light area corresponding to the out-light detection area, and obtaining the light intensity corresponding to the out-light detection area through the indication of the light intensity detection sensor;

[0010] Step S4, obtaining a first time length required for polishing the initial lens according to the light intensity corresponding to each out-light area; sending the initial lens into a polishing device for polishing for the first time length, and obtaining a finished product C-lens.

[0011] Optionally, before the step S3, the process further comprises:

[0012] loading a second standard lens on the polishing detection device and turning on the light source; wherein the out-light area of the second standard lens is consistent with the out-light area of the initial lens in position and size;

[0013] sequentially determining each out-light area as a first out-light area for in-light area determination, and determining the area of a first in-light area corresponding to the first out-light area at the flat end face of the first standard lens according to the area of the first out-light area;

[0014] controlling the light-out shielding mechanism to shield other light-out areas except the first light-out area, controlling the light-in shielding mechanism to keep the area of the annular first light-in area unchanged, and changing the shielding area to change the radius of the first light-in area;

[0015] In response to the maximum light intensity received by the light sensor, matching the area corresponding to the first light-in area with the first light-out area.

[0016] Optionally, after the step S3, the process further comprises:

[0017] According to the light intensity of each light-out area, determining the light intensity difference between each adjacent light-out area;

[0018] According to each light intensity difference, determining the roughness difference value between each adjacent light-out area;

[0019] According to each roughness difference value and the light intensity corresponding to each light-out area, obtaining the first time length required for polishing the initial lens.

[0020] Optionally, in the step S4, obtaining the first time length required for polishing the initial lens according to the light intensity corresponding to each light-out area, comprises:

[0021] According to the light intensity corresponding to each light-out area, obtaining the roughness of the initial lens;

[0022] According to the roughness of the initial lens, obtaining the first time length required for polishing the initial lens.

[0023] Optionally, before the step S4, the process further comprises:

[0024] According to the required size of the initial lens, determining the first polishing power corresponding to the initial lens;

[0025] Controlling the polishing device to polish the initial lens at the first polishing power.

[0026] Optionally, after the step S4, the process further comprises:

[0027] Cleaning the finished C-lens to remove dust generated by polishing; and drying the cleaned finished C-lens;

[0028] Verifying the finished C-lens to determine whether the finished C-lens is qualified.

[0029] Optionally, the required standard size of the initial lens is consistent with the size of the first standard lens.

[0030] Optionally, the flat end face of the initial lens is a flat surface perpendicular to the side edge or an inclined surface at an angle to the side edge, and the flat end face of the first standard lens is a flat surface perpendicular to the side edge or an inclined surface at an angle to the side edge.

[0031] The beneficial effects of the present application are as follows: 1. The present application loads the just-formed initial lens on the polishing detection device, then obtains the light intensity corresponding to each light-out area divided by the flat end face, and determines the first time length required for polishing according to the light intensity corresponding to each light-out area. According to the principle that the rougher the initial lens, the more uneven the distribution of the converted light when converting the scattered light into parallel light, the present application detects the light intensity corresponding to each light-out area, obtains the light intensity distribution according to the light intensity corresponding to each light-out area, and further calculates the roughness to obtain the polishing time length. The present application can quickly determine the polishing time length, polish according to the polishing time length, save the time consumption caused by the fixed time length, and improve the C-lens lens preparation efficiency. In addition, the present application divides the flat end face of the initial lens into a central circle and a plurality of concentric ring light-out areas, determines the light-in area corresponding to each light-out area at the flat end face of the first standard lens, then measures the light intensity corresponding to each light-out area by corresponding shielding of the light-in area and the light-out area, and further obtains the light intensity distribution uniformity. Thus, the problem of difficult measurement of light intensity uniformity is effectively solved. 2. The present application determines the light-in area corresponding to each light-out area at the flat end face of the first standard lens; the flat end face of the first standard lens is provided with a light-in shielding mechanism, which shields the light-in of the flat end face of the first standard lens in a circular and / or annular manner. When the initial lens completely meets the finished product standard, the light of the light-out area will all fall in the light-in area, and the rougher the initial lens, the less the light of the light-out area will fall in the light-in area. The present application uses this point to correspondingly shield the outer part of the light-in area, so that the roughness of the light-out area can be obtained by detecting the light intensity of the light-out area irradiated on the light-in area under the condition that the light-out area light intensity is known. 3. The present application loads the second standard lens on the polishing detection device and turns on the light source; each light-out area is sequentially determined as the first light-out area for light-in area determination, the area of the first light-out area is determined, and the area of the first light-in area corresponding to the first light-out area at the flat end face of the first standard lens is determined; the light-out shielding mechanism is controlled to shield other light-out areas except the first light-out area, the light-in shielding mechanism is controlled to keep the area of the annular first light-in area unchanged, and the shielding area is changed to change the radius of the first light-in area; and the region corresponding to the first light-in area is matched with the first light-out area in response to the maximum light intensity received by the light sensor. The present application can quickly match the positional relationship between the light-out area and the light-in area in this way. 4. The present application determines the light intensity difference between each adjacent light-out area according to the light intensity corresponding to each light-out area; determines the roughness difference value between each adjacent light-out area according to each light intensity difference; and obtains the first time length required for polishing the initial lens according to each roughness difference value and the light intensity corresponding to each light-out area. The present application can effectively avoid uneven polishing according to the roughness difference value to determine the first time length.In conclusion, the application determines the roughness of the initial lens through the corresponding optical properties of the C-lens, and then polishes for the time length, so as to accelerate the preparation efficiency of the C-lens. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a flowchart of a C-lens manufacturing process for an optical fiber collimator according to an embodiment of the application;

[0033] Figure 2 is a structural diagram of a polishing detection device with an optical path according to an embodiment of the application;

[0034] Figure 3 is a schematic diagram corresponding to the light inlet area of the light outlet area according to an embodiment of the application. DETAILED DESCRIPTION

[0035] The application discloses a C-lens manufacturing process for an optical fiber collimator, and those skilled in the art can refer to the content herein and appropriately improve technical details to realize. It should be particularly pointed out that all similar replacements and changes are obvious to those skilled in the art, and they are regarded as being included in the application. The method and application of the application have been described through the preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the method and application described herein without departing from the content, spirit and scope of the application, to realize and apply the technology of the application.

[0036] The applicant found that the C-lens can change parallel light into scattered light, and also can change scattered light into parallel light. When the C-lens changes scattered light into parallel light, the parallel light is uniformly and regularly distributed on the plane. The applicant found that the greater the roughness of the semi-finished C-lens, the more uneven the distribution of the converted light when the semi-finished C-lens converts scattered light into parallel light. However, how to detect the uniformity of the converted light is also a difficult problem.

[0037] Therefore, the embodiment of the application provides a C-lens manufacturing process for an optical fiber collimator, as shown in the figure, the process comprises: Figure 1

[0038] Step S1, melt the glass blank by heating, pour the melted glass blank into a C-lens mold, cool and shape the C-lens mold to obtain an initial lens.

[0039] It should be noted that the initial shaping method of the C-lens is generally through heating and melting.

[0040] In another embodiment, the glass rod of a certain specification can also be ground to be initially shaped. ​

[0041] Step S2, loading the initial lens on the polishing detection device.

[0042] Wherein, the polishing detection device is in an environment without external light, such as Figure 2 As shown, the polishing detection device comprises a clamping wall 202 for clamping the initial lens 201, the clamping wall 202 clamps the initial lens 201 around, and the clamping wall 202 adopts light-absorbing material, a light source 203 is arranged at a standard focal point corresponding to the side of the spherical end face of the initial lens 201, the light source 203 emits scattered light towards the side of the spherical end face of the initial lens 201, a first standard lens 204 is arranged in parallel on the side of the flat end face of the initial lens 201, and the flat end face of the first standard lens 204 is opposite to the flat end face of the initial lens 201; a light intensity detection sensor 205 is arranged at a focal point corresponding to the side of the spherical end face of the first standard lens 204, a light-emitting shielding mechanism is arranged at the flat end face of the initial lens 201, and the light-emitting shielding mechanism shields the light-emitting of the flat end face of the initial lens 201 in a circular and / or annular manner; a light-entrance shielding mechanism is arranged at the flat end face of the first standard lens 204, and the light-entrance shielding mechanism shields the light-entrance of the flat end face of the first standard lens 204 in a circular and / or annular manner. The clamping wall 202 adopts light-absorbing material to avoid interference of reflected light on the detection process, so as to cause inaccurate detection results. The focal point is a light collection point.

[0043] Figure 2 The arrow line segment in the figure is the propagation direction of the light path.

[0044] It should be noted that the C-lens lens converts the scattered light into parallel light, if the C-lens lens meets the smooth standard, the light intensity distribution of the place irradiated by the parallel light is relatively uniform. If the roughness of the C-lens lens is high, part of the scattered light cannot become parallel light, resulting in uneven light intensity distribution of the parallel light and the non-parallel light irradiating the same place.

[0045] The embodiment of the application can detect the uniformity of the initial lens after converting the scattered light into parallel light by the polishing detection device. The principle used is to obtain the roughness of the part of the area by shielding the light intensity of the part of the area of the flat end face of the initial lens corresponding to the flat end face of the first standard lens.

[0046] Optionally, the required standard specification of the initial lens is consistent with the specification of the first standard lens. Only when the specifications are consistent, the conversion from scattered light to parallel light to scattered light can be ensured.

[0047] In a specific embodiment, the flat end face of the initial lens is a plane perpendicular to the side or an inclined plane at a certain angle with the side, and the flat end face of the first standard lens is a plane perpendicular to the side or an inclined plane at a certain angle with the side.

[0048] It should be noted that the C-lens lens is applied in the photoelectric device, and the flat end face is generally wedge-shaped, that is, an inclined surface with a certain angle with the side. The flat end face of the initial lens and the flat end face of the first standard lens remain consistent during use.

[0049] In step S3, the flat end face of the initial lens is divided into a central circle and a plurality of concentric ring light-emitting areas, and the light-emitting areas corresponding to each light-emitting area are determined at the flat end face of the first standard lens; the light source is turned on, each light-emitting area is sequentially determined as a light-emitting detection area for light intensity detection; the light-emitting shielding mechanism is controlled to shield other light-emitting areas except the light-emitting detection area, the light- shielding mechanism is controlled to shield other areas of the flat end face of the first standard lens except the light-emitting detection area corresponding light- receiving area, and the light intensity corresponding to the light-emitting detection area is obtained through the indication of the light sensor.

[0050] It should be noted that the light-emitting area corresponding to the light-receiving area means that when the initial lens is compounded and smoothed, the light of the light-emitting area will be fully irradiated on the light-receiving area. The other areas outside the light-emitting detection area and the other areas outside the light-receiving area corresponding to the light-emitting detection area are shielded in the embodiment of the application, and the emitted light of the light-emitting detection area and the received light of the corresponding light-receiving area are retained. After the ideal light intensity of the emitted light of the light-emitting detection area is known when the initial lens is compounded and smoothed, the ideal light intensity of the emitted light of the light-emitting detection area is fully irradiated on the light-receiving area, and the actual light intensity collected by the corresponding light-receiving area (through the light sensor), the difference between the ideal light intensity and the actual light intensity is obtained. The roughness corresponding to the light-emitting detection area is obtained. The greater the difference between the ideal light intensity and the actual light intensity, the more the emitted light of the light-emitting detection area is deflected, and the rougher the roughness corresponding to the light-emitting detection area.

[0051] It is worth mentioning that during the detection of the light-emitting detection area, the light path of the embodiment of the application is from the light source (scattered light) to the light-emitting detection area (converted into parallel light or scattered light) to the corresponding light-receiving area (converted into scattered light and aggregated together), and finally received by the light sensor to obtain the light intensity.

[0052] In a specific embodiment, as shown in Figure 3 the light-emitting area is 301, and the light-receiving area is 302. In an ideal case, the light-emitting area 301 and the light-receiving area 302 should have equal areas. In actual application, there will be slight deviation, so adjustment should be made according to the actual situation. The white part of the light-emitting area 301 is the light-emitting detection area without shielding, and the black part is shielded; the white part of the light-receiving area 302 is the light-receiving area corresponding to the light-emitting detection area without shielding, and the black part is shielded.

[0053] In a specific embodiment, before step S3, the process further includes:

[0054] Load the second standard lens on the polishing detection device, and turn on the light source; wherein the light-emitting area of the second standard lens is consistent with the light-emitting area of the initial lens in size and position; the second standard lens is consistent with the first standard lens in specification.

[0055] Determine each light-emitting area as the first light-emitting area in turn to determine the light-incident area, and determine the area of the first light-incident area corresponding to the first light-emitting area at the flat end face of the first standard lens according to the area of the first light-emitting area.

[0056] Control the light-emitting shielding mechanism to shield other light-emitting areas except the first light-emitting area, control the light-incident shielding mechanism to keep the area of the annular first light-incident area unchanged, and change the shielding area to change the radius of the first light-incident area.

[0057] In response to the maximum light intensity received by the light sensor, the region corresponding to the first light-incident area is matched with the first light-emitting area.

[0058] It should be noted that, in an ideal case, the light-emitting area and the corresponding light-incident area should be parallel and equal in size. However, in actual application, some deviations may occur due to external factors, and the light-incident area needs to be determined again. The area of the light-incident area can generally be obtained through the area of the light-emitting area, so in the embodiment of the present application, the area of the light-incident area is kept unchanged, the radius of the light-incident area is changed to make the light intensity received by the light-incident area maximum (since the light of the light-emitting area is fully irradiated on the light-incident area, so the maximum means that the region is the corresponding light-incident area), so that the light-incident area and the light-emitting area are matched. The embodiment can quickly determine the corresponding light-incident area of each light-emitting area according to the actual situation, and has good adaptability.

[0059] Step S4, obtaining the first time length required for polishing the initial lens according to the light intensity corresponding to each light-emitting area; and sending the initial lens into the polishing device for polishing for the first time length to obtain a finished product C-lens lens.

[0060] In a specific embodiment, the step S4 of obtaining the first time length required for polishing the initial lens according to the light intensity corresponding to each light-emitting area comprises:

[0061] Obtaining the roughness of the initial lens according to the light intensity corresponding to each light-emitting area.

[0062] Obtaining the first time length required for polishing the initial lens according to the roughness of the initial lens.

[0063] It should be noted that in other embodiments, the first time length can also be directly obtained according to the light intensity. Through training of the model, the relationship between the light intensity and the time length is directly obtained.

[0064] Optionally, after step S3, the process further comprises:

[0065] According to the light intensity corresponding to each light-emitting area, the light intensity difference between each adjacent light-emitting area is determined;

[0066] According to each light intensity difference, the roughness difference between each adjacent light-emitting area is determined;

[0067] According to each roughness difference and the light intensity corresponding to each light-emitting area, the first time length required for polishing the initial lens is obtained.

[0068] It should be noted that the roughness difference between each area can be obtained by the roughness difference, if the difference is small, a first time length can be selected to make all areas fully polished. If the difference is large, the most rough area and its position need to be given the maximum weight, and the first time length is calculated. In this way, the polishing quality can be guaranteed, and uneven polishing can be avoided.

[0069] In a specific embodiment, the process further comprises, before step S4:

[0070] According to the size of the required specification of the initial lens, the first polishing power corresponding to the initial lens is determined;

[0071] The polishing device is controlled to polish the initial lens at the first polishing power.

[0072] It should be noted that the larger the initial lens, the larger the polishing power required.

[0073] In a specific embodiment, after step S4, the process further comprises:

[0074] The finished C-lens lens is cleaned to remove dust generated by polishing; the cleaned finished C-lens lens is dried;

[0075] The finished C-lens lens is checked to determine whether the finished C-lens lens is qualified.

[0076] It should be noted that cleaning, drying and checking are important steps for shipment.

[0077] The embodiment of the present application loads the just-shaped initial lens on the polishing detection device, and then obtains the light intensity corresponding to each light-out area divided by the flat end face of the initial lens, and determines the first time length required for polishing according to the light intensity corresponding to each light-out area. According to the principle that the rougher the initial lens is, the more uneven the distribution of the converted light is when the scattered light is converted into parallel light, the embodiment of the present application detects the light intensity corresponding to each light-out area, obtains the light intensity distribution according to the light intensity corresponding to each light-out area, and further calculates the roughness to obtain the polishing time length required. The embodiment of the present application can quickly determine the polishing time length required, polish according to the polishing time length required, save the time consumption caused by the fixed time length, and improve the C-lens lens preparation efficiency. In addition, the embodiment of the present application divides the flat end face of the initial lens into a central circle and a plurality of concentric ring light-out areas, determines the light-in area corresponding to each light-out area at the flat end face of the first standard lens, then measures the light intensity corresponding to each light-out area by corresponding shielding of the light-in area and the light-out area, and further obtains the light intensity distribution uniformity. Thus, the problem that the light intensity uniformity is difficult to measure is effectively solved.

[0078] The embodiment of the present application determines the light-in area corresponding to each light-out area at the flat end face of the first standard lens; the flat end face of the first standard lens is provided with a light-in shielding mechanism, and the light-in shielding mechanism shields the light-in of the flat end face of the first standard lens in a circular and / or annular manner. When the initial lens completely meets the finished product standard, the light of the light-out area will all fall in the light-in area, and the rougher the initial lens is, the less the light of the light-out area will fall in the light-in area. The embodiment of the present application shields the outer part of the light-in area by using this point, so that the roughness of the light-out area can be obtained by detecting the light intensity of the light-out area irradiated on the light-in area under the condition that the light-out intensity of the light-out area is known.

[0079] The embodiment of the present application loads the second standard lens on the polishing detection device, and turns on the light source; each light-out area is sequentially determined as a first light-out area for light-in area determination, the area of the first light-out area is determined, and the area of the first light-in area corresponding to the first light-out area at the flat end face of the first standard lens is determined; the light-out shielding mechanism is controlled to shield other light-out areas except the first light-out area, the light-in shielding mechanism is controlled to keep the area of the annular first light-in area unchanged, and the shielding area is changed to change the radius of the first light-in area; and the region corresponding to the first light-in area is matched with the first light-out area in response to the maximum light intensity received by the light irradiation sensor. The embodiment of the present application can quickly match the positional relationship between the light-out area and the light-in area in this way.

[0080] The embodiment of the present application determines the light intensity difference between each adjacent light-emitting area according to the light intensity corresponding to each light-emitting area; determines the roughness difference value between each adjacent light-emitting area according to each light intensity difference; and obtains the first time length required for polishing the initial lens according to each roughness difference value and the light intensity corresponding to each light-emitting area. The embodiment of the present application determines the first time length according to the roughness difference value, which can effectively avoid the uneven polishing. In summary, the embodiment of the present application determines the roughness of the initial lens through the optical characteristics corresponding to the C-lens, and then polishes the initial lens according to the time length, so as to accelerate the preparation efficiency of the C-lens.

[0081] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0082] Each embodiment in the specification is described in a relevant manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0083] The above only describes the preferred embodiments of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A manufacturing process for a C-lens for fiber collimators, characterized in that, The process comprises: Step S1, heating and melting a glass blank, pouring the molten glass blank into a C-lens lens mold; cooling and forming the C-lens lens mold to obtain an initial lens; Step S2, loading the initial lens on a polishing detection device; wherein the polishing detection device is in an environment without external light, the polishing detection device comprises a clamping wall for clamping the initial lens, the clamping wall clamps the initial lens around and the clamping wall is made of light-absorbing material, a light source is arranged at a standard focus point corresponding to one side of a spherical end face of the initial lens, the light source emits scattered light towards the spherical end face of the initial lens, a first standard lens is arranged on the side of the flat end face of the initial lens in parallel, the flat end face of the first standard lens is opposite to the flat end face of the initial lens; a light intensity detection sensor is arranged at a focus point corresponding to the spherical end face of the first standard lens, an out-light shielding mechanism is arranged at the flat end face of the initial lens, the out-light shielding mechanism shields the light out of the flat end face of the initial lens in a circular and / or annular shape; an in-light shielding mechanism is arranged at the flat end face of the first standard lens, the in-light shielding mechanism shields the light into the flat end face of the first standard lens in a circular and / or annular shape; Step S3, dividing the flat end face of the initial lens into a center circle and a plurality of concentric ring light emitting areas, and determining the light entering areas corresponding to each light emitting area at the flat end face of the first standard lens; turning on the light source, sequentially determining each light emitting area as a light emitting detection area for light intensity detection; controlling the out-light shielding mechanism to shield other light emitting areas except the light emitting detection area, controlling the in-light shielding mechanism to shield other areas of the flat end face of the first standard lens except the light entering area corresponding to the light emitting detection area, and obtaining the light intensity corresponding to the light emitting detection area through the indication of the light intensity detection sensor; Step S4, obtaining the first time length required for polishing the initial lens according to the light intensity corresponding to each light emitting area; sending the initial lens into a polishing device for polishing for the first time length to obtain a finished C-lens lens.

2. The C-lens manufacturing process for a fiber collimator according to claim 1, wherein, Before the step S3, the process further comprises: loading a second standard lens on the polishing detection device and turning on the light source; wherein the light emitting area of the second standard lens is consistent with the light emitting area of the initial lens in position and size; sequentially determining each light emitting area as a first light emitting area for light entering area determination, and determining the area of the first light entering area corresponding to the first light emitting area at the flat end face of the first standard lens according to the area of the first light emitting area; controlling the out-light shielding mechanism to shield other light emitting areas except the first light emitting area, and controlling the in-light shielding mechanism to keep the area of the annular first light entering area unchanged and change the shielding area to change the radius of the first light entering area; in response to the maximum light intensity received by the light intensity detection sensor, matching the area corresponding to the first light entering area with the first light emitting area.

3. The process for manufacturing a C-lens for a fiber collimator according to claim 1, wherein After the step S3, the process further comprises: According to the light intensity corresponding to each of the light emitting areas, determining the light intensity difference between each adjacent light emitting area; According to each of the light intensity difference, determining the roughness difference value between each adjacent light emitting area; According to each of the roughness difference value and the light intensity corresponding to each of the light emitting areas, obtaining the first time length required for polishing the initial lens.

4. The C-lens manufacturing process for a fiber collimator according to claim 1, wherein, In the step S4, according to the light intensity corresponding to each of the light emitting areas, obtaining the first time length required for polishing the initial lens, comprising: According to the light intensity corresponding to each of the light emitting areas, obtaining the roughness of the initial lens; According to the roughness of the initial lens, obtaining the first time length required for polishing the initial lens.

5. The process for manufacturing a C-lens for a fiber collimator according to claim 1, wherein Before the step S4, the process further comprises: According to the required size of the initial lens, determining the first polishing power corresponding to the initial lens; Controlling the polishing device to polish the initial lens with the first polishing power.

6. The process for manufacturing a C-lens for a fiber collimator according to claim 1, wherein, After the step S4, the process further comprises: Cleaning the finished product C-lens to remove dust generated by polishing; drying the finished product C-lens after cleaning; Verifying the finished product C-lens to determine whether the finished product C-lens is qualified.

7. The process for manufacturing a C-lens for a fiber collimator according to claim 1, wherein The required standard size of the initial lens is consistent with the size of the first standard lens.

8. The C-lens manufacturing process for a fiber collimator according to claim 1, wherein, The flat end face of the initial lens is a plane perpendicular to the side or an inclined plane at a certain angle with the side, and the flat end face of the first standard lens is a plane perpendicular to the side or an inclined plane at a certain angle with the side.

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