CN117666162A - Multi-lens assembling and adjusting method and device - Google Patents
Multi-lens assembling and adjusting method and device Download PDFInfo
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Abstract
A multi-lens assembling and adjusting method and an assembling and adjusting device, wherein the assembling and adjusting method comprises the following steps: acquiring a reference optical axis for multi-lens assembly adjustment; the position and the angle of the current adjusting lens group are adjusted through the internal focusing telescope, so that the current adjusting lens group is adjusted to be coaxial with the reference optical axis; the position of the current adjusting lens group is adjusted through the mirror surface positioning instrument, so that the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement. The internal focusing telescope and the mirror surface positioning instrument are integrated on the same supporting seat, so that the utilization rate of the optical platform is effectively improved; in the assembling and adjusting process, the internal focusing telescope and the mirror surface positioning instrument are switched through the position change of the supporting seat, so that the optical axis measurement of the system is not required to be aligned for many times, and the assembling and adjusting efficiency is improved; and in the assembly and adjustment process, whether the assembly and adjustment are qualified or not is intuitively and rapidly fed back through related prompts, and the actual numerical value is not required to be calculated for many times, so that the labor and time cost are effectively saved.
Description
Technical Field
The invention relates to the technical field of mirror assembly and adjustment, in particular to a multi-mirror assembly and adjustment method and an assembly and adjustment device.
Background
The optical performance of the optical system is not only related to the quality of each lens in the system, but also closely related to the adjustment precision between the lens groups, so that the improvement of the adjustment precision between the lens groups is particularly important to the improvement of the performance of the optical system.
At present, the working mode of the inter-lens assembly adjustment is as follows: the first lens group is fixed on the optical platform, the helium-neon laser is used for determining the optical axis of the system, the position direction of the second lens group is adjusted to be coaxial with the optical axis of the system, the air interval between the lens groups is measured through the mirror surface positioning instrument, and if the theoretical air interval requirement is not met, the second lens group is required to be reinstalled and adjusted again until the second lens group is qualified. This adjustment method makes it difficult to control the adjustment amount, and if the adjustment is deviated from the optical axis, the optical axis needs to be realigned.
In addition, in the prior art, whether the air interval error between the lens groups meets the requirement needs to be calculated for many times in the measuring process, if the air interval error is unqualified, repeated disassembly, alignment, testing and assembly are needed, and certain damage to the lens group components can be caused in the disassembly and assembly process.
Therefore, the current multi-lens assembly and adjustment efficiency is very low, and time and labor cost are wasted.
Disclosure of Invention
In order to solve the technical problems of low efficiency, time waste and labor cost of multi-lens assembly and adjustment, the application provides a multi-lens assembly and adjustment method and an adjustment device, wherein an internal focusing telescope and a mirror surface positioning instrument are switched through a first calibration position and a second calibration position, so that the adjustment process does not need to align system optical axis measurement for multiple times, and the adjustment efficiency is improved; in the assembly and adjustment process, whether the assembly and adjustment are qualified or not is intuitively and rapidly fed back through relevant prompts, actual numerical values do not need to be calculated for many times, and labor and time cost are effectively saved.
The technical scheme provided by the invention is as follows:
the invention provides a multi-lens assembly and adjustment method, which comprises the following steps:
acquiring a reference optical axis for multi-lens assembly adjustment;
the position and the angle of the current adjusting lens group are adjusted through the internal focusing telescope, so that the current adjusting lens group is adjusted to be coaxial with the reference optical axis;
the position of the current adjusting lens group is adjusted through the mirror surface positioning instrument, so that the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement.
Further preferably, the step of acquiring the reference optical axis further includes the step of:
calibrating the position of the internal focusing telescope in a light path according to the reference optical axis to obtain a first calibration position, wherein the internal focusing telescope is coaxial with the reference optical axis when the internal focusing telescope is arranged at the first calibration position;
and calibrating the position of the mirror surface positioner in the light path according to the reference optical axis to obtain a second calibration position, wherein when the mirror surface positioner is arranged at the second calibration position, the signal light emitted by the mirror surface positioner is coaxial with the reference optical axis.
Further preferably, the adjusting the position and angle of the current adjusting lens group through the internal focusing telescope adjusts the current adjusting lens group to be coaxial with the reference optical axis, and specifically includes the steps of:
moving the internal focusing telescope to a first calibration position to enable the internal focusing telescope to be coaxial with the reference optical axis;
acquiring spherical center image data of all lenses in the current adjusting lens group and the previous adjusting lens group;
simulating the deviation position and the deviation angle of the current adjusting lens group relative to the previous adjusting lens group based on the spherical center image data;
judging whether the current adjusting lens group is coaxial with the reference optical axis or not according to the deviation position and the deviation angle, and correspondingly prompting a judging result;
if not, the position and the angle of the current adjusting lens group are adjusted until the current adjusting lens group is adjusted to be coaxial with the reference optical axis.
Further preferably, the adjusting the position of the current adjusting lens group by the mirror surface positioner makes the air interval between the current adjusting lens group and the previous adjusting lens group meet the preset requirement, and the method specifically comprises the following steps:
moving the mirror surface positioning instrument to a second calibration position, so that signal light emitted by the mirror surface positioning instrument is coaxial with the reference optical axis;
acquiring relevant parameters of the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, wherein the relevant parameters comprise thicknesses, refractive indexes and curvature radiuses of lenses in the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group and actual air intervals among all the adjusting lens groups;
calculating a theoretical air interval between the current adjusting lens group and the previous adjusting lens group through the related parameters;
calculating an air interval error between the current adjusting lens group and the previous adjusting lens group according to the actual air interval and the theoretical air interval between the current adjusting lens group and the previous adjusting lens group;
judging whether the air interval error is smaller than a preset air interval error or not, and correspondingly prompting a judging result;
if not, the position of the current adjusting lens group is adjusted until the air interval error between the current adjusting lens group and the previous adjusting lens group is smaller than the preset air interval error.
The invention also provides a multi-lens assembly adjusting device, which comprises:
an optical platform for mounting a plurality of lens groups;
the support seat is movably arranged on the optical platform;
the first data acquisition unit is arranged on the supporting seat and is used for acquiring first data, and the position and the angle of the current adjusting lens group on the optical platform are adjusted through the first data, so that the current adjusting lens group is adjusted to be coaxial with the reference optical axis;
the second data acquisition unit is arranged on the supporting seat and is used for acquiring second data, and the position of the current adjusting lens group on the optical platform is adjusted through the second data, so that the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement;
the control unit is in signal connection with the first data acquisition unit and the second data acquisition unit;
the control unit is used for calculating the deviation position and the deviation angle of the current adjusting lens group relative to the previous adjusting lens group according to the first data fed back by the first data acquisition unit, and judging whether the current adjusting lens group is coaxial with the reference optical axis or not according to the deviation position and the deviation angle;
the control unit is also used for calculating the air interval error between the current adjusting lens group and the previous adjusting lens group according to the second data fed back by the second data acquisition unit and judging whether the air interval error is smaller than a preset air interval error or not.
Further preferably, the first data is spherical center image data of all lenses in the current adjusting lens group and the previous adjusting lens group; the first data acquisition unit comprises an internal focusing telescope and an image sensor;
the internal focusing telescope is used for imaging all lenses in the current adjusting lens group and the previous adjusting lens group onto the image sensor;
the image sensor is used for transmitting all sphere center image data received on the target surface to the control unit.
Further preferably, the second data is the actual air space between all the adjustable lens groups; the second data acquisition unit comprises a mirror surface positioning instrument, wherein the mirror surface positioning instrument is used for analyzing and calculating the actual air intervals between the current adjusting mirror group and all the adjusting mirror groups at the front end of the current adjusting mirror group, and transmitting the analyzed and calculated actual air intervals to the control unit.
Further preferably, the control unit calculates an air interval error between the current tuning lens group and the previous tuning lens group according to the second data fed back by the second data acquisition unit, and specifically includes:
acquiring relevant parameters of the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, wherein the relevant parameters comprise thicknesses, refractive indexes and curvature radiuses of lenses in the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group and actual air intervals among all the adjusting lens groups;
calculating a theoretical air interval between the current adjusting lens group and the previous adjusting lens group through the related parameters;
and calculating an air interval error between the current adjusting lens group and the previous adjusting lens group through the actual air interval and the theoretical air interval between the current adjusting lens group and the previous adjusting lens group.
Further preferably, the internal focusing telescope and the mirror positioner are respectively mounted on the support base, when the support base moves to the first calibration position, the internal focusing telescope is coaxial with the reference optical axis, and when the support base moves to the second calibration position, the signal light emitted by the mirror positioner is coaxial with the reference optical axis.
Further preferably, the system further comprises a prompting unit, wherein the prompting unit is in signal connection with the control unit, and the control unit is further used for correspondingly prompting the assembly and adjustment process of the current assembly and adjustment lens group through the prompting unit; the prompt comprises a result prompt of whether the current adjusting lens group is coaxial with the reference optical axis or not and a result prompt of whether the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement or not.
The multi-lens assembly and adjustment method and the adjustment device provided by the invention have at least any one of the following effects:
1. the internal focusing telescope and the mirror surface positioning instrument are integrated on the same supporting seat, so that the utilization rate of the optical platform is effectively improved;
2. in the assembling and adjusting process, the focusing telescope and the mirror surface positioning instrument are switched through the position change of the supporting seat, so that the optical axis measurement of the system is not required to be aligned for many times, and the assembling and adjusting efficiency is improved;
3. and in the assembly and adjustment process, whether the assembly and adjustment are qualified or not is intuitively and rapidly fed back through related prompts, and the actual numerical value is not required to be calculated for many times, so that the labor and time cost are effectively saved.
Drawings
FIG. 1 is a flow chart of a multi-mirror assembly tuning method;
FIG. 2 is a schematic diagram of a multi-mirror assembly adjustment device.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
Embodiment one:
the present embodiment provides a method for adjusting multiple mirrors, the flowchart of which is shown in fig. 1, and specifically includes the following steps.
S100: a reference optical axis for the multi-mirror assembly adjustment is acquired.
S200: the current adjusting lens group is adjusted to be coaxial with the reference optical axis by adjusting the position and the angle of the current adjusting lens group through the internal focusing telescope.
S300: the position of the current adjusting lens group is adjusted through the mirror surface positioning instrument, so that the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement.
The multi-lens assembly adjustment refers to the assembly adjustment of at least two lens groups, wherein the first lens group is directly installed, and the installation of the subsequent lens group needs to adjust the coaxial optical axis and the air interval between the lens groups, so that the installation of the subsequent lens group meets the design requirement of the whole optical system; the key of the multi-lens assembling and adjusting method of the embodiment is to adjust the coaxial optical axis of the front lens group and the air interval between the lens groups in the subsequent lens assembling and adjusting process; in order to realize that the optical axes are coaxial after the multi-lens assembly and adjustment and the air interval between the lens groups meets the design requirement of the whole optical system, a reference optical axis needs to be determined before the subsequent lens assembly and adjustment, and preferably, after the first lens group is fixedly installed, the optical axis of the first lens group is used as the reference optical axis; and precisely controlling the subsequent mirror assembly and adjustment process according to the reference optical axis.
Further, in this embodiment, the position and angle of the adjusting lens group are adjusted by the internal focusing telescope, so that the adjusting lens group is coaxial with the reference optical axis, and the position of the adjusting lens group is adjusted by the mirror surface positioner, so that the air interval between the adjusting lens group and the previous adjusting lens group meets the preset requirement, therefore, the method further includes the steps of calibrating the position of the internal focusing telescope and calibrating the position of the mirror surface positioner after the reference optical axis is acquired in step S100, specifically:
calibrating the position of the internal focusing telescope in the light path according to the reference optical axis to obtain a first calibration position, wherein the internal focusing telescope is coaxial with the reference optical axis when the internal focusing telescope is arranged at the first calibration position;
and calibrating the position of the mirror surface positioner in the light path according to the reference optical axis to obtain a second calibration position, wherein when the mirror surface positioner is arranged at the second calibration position, the signal light emitted by the mirror surface positioner is coaxial with the reference optical axis.
Based on the reference optical axis determined in step S100 and the first calibration position of the internal focusing telescope and the second calibration position of the mirror positioner determined according to the reference optical axis, these preliminary preparations may be performed, and then step S200 and step S300 may be performed.
In step S200, the current adjusting lens group is adjusted to be coaxial with the reference optical axis by adjusting the position and angle of the current adjusting lens group through the internal focusing telescope, specifically comprising the steps of:
s201: and moving the internal focusing telescope to a first calibration position to enable the internal focusing telescope to be coaxial with the reference optical axis.
S202: and acquiring the spherical center image data of all lenses in the current adjusting lens group and the previous adjusting lens group.
The spherical center image data acquisition of the lenses is realized through a CCD (image sensor) carried by the internal focusing telescope, the specific internal focusing telescope images all lenses in the current adjusting lens group and the previous adjusting lens group onto the CCD, and all spherical center image data received on the target surface are obtained through the CCD.
S203: and simulating the deviation position and the deviation angle of the current adjusting lens group relative to the previous adjusting lens group based on the spherical center image data.
S204: judging whether the current adjusting lens group is coaxial with the reference optical axis or not through the deviation position and the deviation angle, and correspondingly prompting the judging result.
For example, an indicator light may be provided, and the color of the light emitted by the indicator light enables the fitter to intuitively know whether the current tunable lens group is coaxial with the reference optical axis, specifically, if the current tunable lens group is coaxial with the reference optical axis, the indicator light emits blue light, and if the current tunable lens group is not coaxial with the reference optical axis, the indicator light emits yellow light, and the fitter decides whether to continuously adjust the relative angle and position of the current tunable lens group according to the color of the light emitted by the indicator light until the indicator light emits blue light.
For another example, a voice prompter may be further provided, through which whether the current adjusting lens group is coaxial with the reference optical axis is prompted in real time.
For another example, the indication lamp and the voice prompter can be combined to correspondingly prompt the judging result, that is, the sound and light are combined, specifically, if the current adjusting lens group is coaxial with the reference optical axis, the voice and blue light are emitted to prompt, and if the current adjusting lens group is not coaxial with the reference optical axis, the voice and yellow light are emitted to prompt.
Through prompting the judging result, whether the assembly and the adjustment are qualified or not can be directly and rapidly fed back, an assembly and adjustment person is not required to calculate actual values for many times, and labor and time cost are effectively saved.
S205: if not, the position and angle of the current adjusting lens group are adjusted, and the step S202 is returned until the current adjusting lens group is adjusted to be coaxial with the reference optical axis.
In step S300, the position of the current adjusting lens group is adjusted by the mirror surface positioner, so that the air gap between the current adjusting lens group and the previous adjusting lens group meets the preset requirement, and the method specifically comprises the following steps:
s301: and (3) moving the mirror surface positioning instrument to a second calibration position, so that the signal light emitted by the mirror surface positioning instrument is coaxial with the reference optical axis.
S302: and acquiring relevant parameters of the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, wherein the relevant parameters comprise thicknesses, refractive indexes and curvature radiuses of lenses in the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group and actual air intervals among all the adjusting lens groups.
S303: and calculating the theoretical air interval between the current adjusting lens group and the previous adjusting lens group through the related parameters.
Specifically, under the condition of coaxial optical axes, parameters such as actual thickness, refractive index, curvature radius, actual air intervals among all lens groups in the current adjusting lens group and all lens groups at the front end of the current adjusting lens group are substituted into an optical simulation system, and theoretical air intervals among the current adjusting lens group and the previous adjusting lens group are calculated.
S304: and calculating an air interval error between the current adjusting lens group and the previous adjusting lens group through an actual air interval and a theoretical air interval between the current adjusting lens group and the previous adjusting lens group.
And obtaining a corresponding air interval error by taking the absolute value of the difference between the actual air interval and the theoretical air interval.
S305: judging whether the air interval error is smaller than a preset air interval error or not, and correspondingly prompting a judging result.
In particular, the prompting may refer to the prompting of the judgment result in the step S204, and it should be noted that the prompting of the indicator light in the step and the prompting of the indicator light in the step S204 may be based on the prompting by emitting the light with the same color, or may be the prompting by emitting the light with different colors respectively.
For example, when the indication lamp is used to prompt the judgment result in step S305, if the air interval error is smaller than the preset air interval error, the indication lamp emits blue light, and if the air interval error is not smaller than the preset air interval error, the indication lamp emits yellow light;
further, in order to distinguish between the coaxial adjustment of the optical axis and the positional adjustment, the color of the light emitted from the indicator lamp in step S305 is different from the color of the light emitted from the indicator lamp in step S204, for example, if the air interval error is smaller than the preset air interval error, the indicator lamp emits green light, and if the air interval error is not smaller than the preset air interval error, the indicator lamp emits red light;
regardless of how the luminous color of the indicator lamp is controlled, the adjustment personnel decides whether to continuously adjust the relative position of the current adjustment lens group according to the luminous color of the indicator lamp until the air interval error between the current adjustment lens group and the previous adjustment lens group is smaller than the preset air interval error.
S306: if not, the position of the current adjusting lens group is adjusted until the air interval error between the current adjusting lens group and the previous adjusting lens group is smaller than the preset air interval error.
Through the steps S100-S300, the accurate control of the multi-lens assembly and adjustment process can be realized, after the internal focusing telescope and the mirror surface positioner are calibrated based on the determined reference optical axis, the subsequent adjustment process does not need to repeatedly calibrate the internal focusing telescope and the mirror surface positioner for many times, namely, in the whole adjustment process, the placement positions of the internal focusing telescope and the mirror surface positioner only need to be determined for the first time, the subsequent adjustment can determine the corresponding positions only through the recorded calibration positions, and meanwhile, an adjustment person only needs to control the corresponding calculation unit to calculate the adjustment actual data of the whole optical system in real time, and whether the adjustment is qualified or not is judged through the indicator lamp, so that the time and the labor cost are effectively saved, and the adjustment efficiency is improved.
Embodiment two:
the embodiment provides a multi-mirror assembly adjustment device, the structure of which is shown in fig. 2, comprising: the optical bench 100, the support base 200, the first data acquisition unit 300, the second data acquisition unit 400 and the control unit 500.
The optical stage 100 is used for mounting a plurality of lens groups; the supporting seat 200 is movably arranged on the optical platform; the first data acquisition unit 300 is disposed on the support base 200, and is used for acquiring first data, and adjusting the position and angle of the current adjusting lens group on the optical platform 100 according to the first data, so that the current adjusting lens group is adjusted to be coaxial with the reference optical axis; the second data acquisition unit 400 is disposed on the support base 200, and is configured to acquire second data, and adjust the position of the current adjusting lens group on the optical platform 100 according to the second data, so that an air interval between the current adjusting lens group and a previous adjusting lens group meets a preset requirement; the control unit 500 is in signal connection with the first data acquisition unit 300 and the second data acquisition unit 400; the control unit 500 is configured to calculate a deviation position and a deviation angle of the current adjusting lens group relative to a previous adjusting lens group according to the first data fed back by the first data acquisition unit 300, and determine whether the current adjusting lens group is coaxial with the reference optical axis according to the deviation position and the deviation angle; the control unit 500 is further configured to calculate an air space error between the current adjusting lens group and the previous adjusting lens group according to the second data fed back by the second data acquisition unit 400, and determine whether the air space between the current adjusting lens group and the glue-adjusting lens group meets a preset requirement according to the air space error.
The first data acquisition unit 300 comprises an internal focusing telescope 301 and an image sensor 302, wherein the internal focusing telescope 301 is used for imaging all lenses in a current adjusting lens group and a previous adjusting lens group onto the image sensor 302; the image sensor 302 is configured to transmit all the spherical center image data received on the target surface to the control unit 500; the first data is the spherical center image data of all lenses in the current adjusting lens group and the previous adjusting lens group.
The second data acquisition unit 400 comprises a mirror surface positioner, and the mirror surface positioner is used for analyzing and calculating the actual air intervals between the current adjusting mirror group and all the adjusting mirror groups at the front end of the current adjusting mirror group and transmitting the analyzed and calculated actual air intervals to the control unit 500; the second data is the actual air space between all the adjustable lens groups.
The multi-lens assembly adjustment refers to the assembly adjustment of at least two lens groups, wherein the first lens group 600 is directly installed, and the subsequent lens groups are installed by adjusting the optical axis coaxial and the air interval between the lens groups, so that the installation of the subsequent lens groups meets the design requirement of the whole optical system; the key of the multi-lens assembling and adjusting method of the embodiment is to adjust the coaxial optical axis of the front lens group and the air interval between the lens groups in the subsequent lens assembling and adjusting process; in order to realize that the optical axes are coaxial after the multi-lens assembly and adjustment and the air interval between the lens groups meets the design requirement of the whole optical system, the reference optical axis needs to be determined before the subsequent lens assembly and adjustment.
Taking 2 multiple lens groups as an example, after the first lens group 600 is fixedly installed on the optical platform 100, taking the optical axis of the first lens group 600 as a reference optical axis; the adjustment process of the second lens group 700 is precisely controlled according to the reference optical axis.
Further, in this embodiment, the position and angle of the adjusting lens group are adjusted by the internal focusing telescope 301, so that the adjusting lens group is coaxial with the reference optical axis, and the position of the adjusting lens group is adjusted by the mirror positioner, so that the air interval between the adjusting lens group and the previous adjusting lens group meets the preset requirement, and therefore, the method further comprises calibrating the position of the internal focusing telescope 301 and calibrating the position of the mirror positioner after determining the reference optical axis, specifically:
the position and angle of the internal focusing telescope 301 in the light path are adjusted by moving the supporting seat 200 according to the reference optical axis, so that the internal focusing telescope 301 is coaxial with the reference optical axis, and the position at the moment is calibrated as a first calibration position of the internal focusing telescope 301;
the position of the mirror positioner in the optical path is adjusted by moving the supporting seat 200 according to the reference optical axis, so that the signal light emitted by the mirror positioner is coaxial with the reference optical axis, and the position at the moment is calibrated as a second calibration position of the mirror positioner.
Because the internal focusing telescope 301 and the mirror surface positioner are respectively arranged on the supporting seat 200, the internal focusing telescope 301 and the mirror surface positioner can be additionally switched by moving the position of the supporting seat 200, so that when the supporting seat 200 moves to a first calibration position, the internal focusing telescope 301 is coaxial with a reference optical axis, and when the supporting seat 200 moves to a second calibration position, signal light emitted by the mirror surface positioner is coaxial with the reference optical axis; and the system optical axis measurement does not need to be aligned for many times, so that the assembly and adjustment efficiency is improved.
It should be noted that, the mirror positioner in the first embodiment and the second embodiment includes a mirror positioner probe 401 and a mirror positioner host 402, and specifically, the mirror positioner probe 401 is mounted on the support base 200, and the mirror positioner host 402 is in signal connection with the control unit 500; therefore, without specific explanation, the signal light emitted by the mirror positioner described in the present application is coaxial with the reference optical axis, meaning that the signal light emitted by the mirror positioner probe 401 is coaxial with the reference optical axis; the mirror surface positioning instrument is used for analyzing and calculating the actual air intervals between the current adjusting mirror group and all the adjusting mirror groups at the front end of the current adjusting mirror group, and transmitting the analyzed and calculated actual air intervals to the control unit 500; the mirror surface positioning instrument host 402 analyzes and calculates the actual air interval between the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, and transmits the analyzed and calculated actual air interval to the control unit 500; that is, when the signal light emitted by the mirror positioner is coaxial with the reference optical axis, the mirror positioner probe 401 is referred to; the mirror locator host 402 is referred to as the mirror locator host in calculating the actual air gap between the mirror groups.
The control unit 500 calculates the offset position and the offset angle of the current adjusting lens group relative to the previous adjusting lens group according to the first data, and judges whether the current adjusting lens group is coaxial with the reference optical axis or not through the offset position and the offset angle; specifically, the control unit 500 simulates the deviated position and the deviated angle of the current adjusting lens group relative to the previous adjusting lens group based on the spherical center image data; judging whether the current adjusting lens group is coaxial with the reference optical axis or not through the deviation position and the deviation angle, and correspondingly prompting a judging result; if not, the adjustment personnel continuously adjusts the position and the angle of the current adjustment lens group until the current adjustment lens group is adjusted to be coaxial with the reference optical axis.
The control unit 500 calculates an air interval error between the current adjusting lens group and the previous adjusting lens group according to the second data, and specifically includes: acquiring relevant parameters of the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, wherein the relevant parameters comprise thicknesses, refractive indexes and curvature radiuses of lenses in the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group and actual air intervals among all the adjusting lens groups; calculating a theoretical air interval between the current adjusting lens group and the previous adjusting lens group through related parameters; and calculating an air interval error between the current adjusting lens group and the previous adjusting lens group through an actual air interval and a theoretical air interval between the current adjusting lens group and the previous adjusting lens group. Then, the control unit 500 determines whether the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement through the air interval error. For example, the control unit 500 determines whether the air space error is smaller than a preset air space error, and if not, adjusts the position of the current adjusting lens group until the air space error between the current adjusting lens group and the previous adjusting lens group is smaller than the preset air space error.
The specific calculation process of the control unit 500 can refer to steps S200 and S300 in the first embodiment, which is not described in detail in this embodiment.
Further, the multi-lens assembly adjusting device of the embodiment further includes a prompting unit 800, the prompting unit 800 is in signal connection with the control unit 500, and the control unit 500 is further configured to correspondingly prompt an assembly adjusting process of the current assembly adjusting lens assembly through the prompting unit 800; the prompt comprises a result prompt of whether the current adjusting lens group is coaxial with the reference optical axis or not, and a result prompt of whether the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement or not.
For example, the prompting unit 800 may be specifically an indicator lamp, and the color emitted by the indicator lamp enables the fitter to intuitively know whether the current fitter lens group is coaxial with the reference optical axis, specifically, if the current fitter lens group is coaxial with the reference optical axis, the indicator lamp emits blue light, and if the current fitter lens group is not coaxial with the reference optical axis, the indicator lamp emits yellow light, and the fitter decides whether to continuously adjust the relative angle and position of the current fitter lens group according to the color emitted by the indicator lamp until the indicator lamp emits blue light.
For another example, the prompting unit 800 may be a voice prompt, through which whether the current adjusting lens group is coaxial with the reference optical axis is prompted in real time.
For another example, the prompting unit 800 may also be a combination of an indicator light and a voice prompter to correspondingly prompt the judgment result, that is, to combine sound and light, specifically, if the current adjusting lens group is coaxial with the reference optical axis, prompt by emitting voice and blue light, and if the current adjusting lens group is not coaxial with the reference optical axis, prompt by emitting voice and yellow light.
Similarly, the prompting mode can also be adopted for prompting whether the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement, and further, in order to distinguish the coaxial adjustment of the optical axis and the position adjustment, the color of the light emitted by the indicator lamp in the position adjustment is different from that of the light emitted by the indicator lamp in the coaxial adjustment of the optical axis, for example, if the air interval error is smaller than the preset air interval error, the indicator lamp emits green light, and if the air interval error is not smaller than the preset air interval error, the indicator lamp emits red light.
Regardless of how the luminous color of the indicator lamp is controlled, the adjustment personnel decides whether to continuously adjust the relative position of the current adjustment lens group according to the luminous color of the indicator lamp until the air interval error between the current adjustment lens group and the previous adjustment lens group is smaller than the preset air interval error.
Through prompting the judging result, whether the assembly and the adjustment are qualified or not can be directly and rapidly fed back, an assembly and adjustment person is not required to calculate actual values for many times, and labor and time cost are effectively saved.
Further, the multi-mirror assembly and adjustment device of the embodiment further includes a control button 900, where the control button 900 is in signal connection with the control unit 500 and the mirror positioner host 402, and different control buttons of the control button 900 or different control directions of the same control button are set to directly control the control unit 500 and the mirror positioner host 402 to perform corresponding operations, for example, when the control button 900 is operated downward, the control unit 500 can be directly started to perform corresponding calculation work, and when the control button 900 is operated upward, the mirror positioner host 402 can be directly started to perform corresponding analysis calculation work, that is, the control unit 500 and the mirror positioner host 402 are controlled by adopting a one-button manner to perform real-time calculation, so that page misoperation of an assembler is avoided, and work efficiency is improved.
Based on the above disclosed one-button control manner, in other embodiments, a person skilled in the art may change the control manner, for example, the control unit 500 and the mirror locator host 402 may be controlled by separate control buttons, so long as the person can be prevented from activating the control unit 500 and the mirror locator host 402 by a page manner.
The following describes the principle of application of the multi-mirror assembly adjustment device of the present embodiment, taking 2 mirror assembly adjustment as an example.
The first lens group 600 is fixedly installed on the optical platform 100 through a corresponding optical lens seat, the optical axis of the first lens group 600 is taken as a reference optical axis, the inner focusing telescope 301 is installed on the supporting seat 200 through a corresponding fixed seat, the placing position of the inner focusing telescope 301 is adjusted to be coaxial with the reference optical axis through the supporting seat 200, the position coordinates (x, y) of the supporting seat 200 at the moment are recorded, and the position is calibrated to be a first calibration position.
The mirror surface locator probe 401 is mounted on the supporting seat 200 through a corresponding fixing seat, the placing position of the mirror surface locator probe 401 is adjusted through the supporting seat 200, so that signal light emitted by the mirror surface locator probe 401 is coaxial with a reference optical axis, the position coordinates (x ', y') of the supporting seat 200 at the moment are recorded, and the position is calibrated to be a second calibration position.
The second lens group 700 is clamped on a five-dimensional adjusting frame arranged on the optical platform 100, and the position and the angle of the second lens group 700 are adjusted by adjusting the five-dimensional adjusting frame in the adjustment process. The image sensor 302 (CCD) mounted on the internal focusing telescope 301 transmits the spherical center images of all lenses in the first lens group 600 and the second lens group 700 in the optical system received on the target surface to the control unit 500, clicks the control button 900, and the control unit 500 simulates the relative deviated position and angle of the second lens group 700, determines whether to be coaxial with the reference optical axis, and displays the specific result on the corresponding display screen. If the lamp is qualified, the prompting unit 800 (particularly an indicator lamp) emits blue light; if the light is not qualified, the prompting unit 800 emits yellow light, and the fitter continuously adjusts the relative angle and the position of the second lens group 700 according to the prompting result of the prompting unit 800 until the prompting unit emits blue light.
Under the condition that the optical axes are coaxial, the control unit 500 substitutes parameters such as the actual thickness, the refractive index, the curvature radius, the actual air interval between the first lens group 600 and the second lens group 700 and the like of all lenses of the first lens group 600 and the second lens group 700 into the optical simulation system, and calculates a theoretical inter-lens group air interval D. Clicking the control button 900, the mirror locator host 402 analytically calculates the actual air separation D' between the first set of mirrors 600 and the second set of mirrors 700. If the preset air interval error between the first and second lens groups 600 and 700 is preset to be δ, the control unit 500 determines whether the requirement is satisfied by calculating |d' | < δ. If the requirements are not met, the prompting unit 800 emits red light, the interval between the lens groups is continuously adjusted and measured until the requirements of |D-D' | < delta are met, and if the requirements are met, the prompting unit 800 emits green light; the next lens group can be continuously assembled and adjusted, and the operation is circulated until all the lenses in the optical system are assembled and adjusted.
In the whole adjustment process, the multi-lens assembly adjustment device provided by the embodiment only needs to determine the placement positions of the inner focusing telescope 301 and the mirror surface positioner probe 401 for the first time, the corresponding positions can be determined only through the recorded position coordinates of the supporting seat 200 in the subsequent test, meanwhile, the adjustment personnel only needs to click the control button 900 to calculate the adjustment actual data of the whole optical system in real time, and the prompt unit 800 is used for judging whether the adjustment is qualified or not, so that the time and labor cost are effectively saved, and the adjustment efficiency is improved.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (10)
1. A method for adjusting a multi-lens assembly, comprising the steps of:
acquiring a reference optical axis for multi-lens assembly adjustment;
the position and the angle of the current adjusting lens group are adjusted through the internal focusing telescope, so that the current adjusting lens group is adjusted to be coaxial with the reference optical axis;
the position of the current adjusting lens group is adjusted through the mirror surface positioning instrument, so that the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement.
2. The multi-mirror assembly adjustment method of claim 1, wherein the step of acquiring the reference optical axis further comprises the steps of:
calibrating the position of the internal focusing telescope in a light path according to the reference optical axis to obtain a first calibration position, wherein the internal focusing telescope is coaxial with the reference optical axis when the internal focusing telescope is arranged at the first calibration position;
and calibrating the position of the mirror surface positioner in the light path according to the reference optical axis to obtain a second calibration position, wherein when the mirror surface positioner is arranged at the second calibration position, the signal light emitted by the mirror surface positioner is coaxial with the reference optical axis.
3. The multi-lens assembling and adjusting method as claimed in claim 2, wherein the adjusting of the current adjusting lens group to be coaxial with the reference optical axis by adjusting the position and angle of the current adjusting lens group through the internal focusing telescope comprises the steps of:
moving the internal focusing telescope to a first calibration position to enable the internal focusing telescope to be coaxial with the reference optical axis;
acquiring spherical center image data of all lenses in the current adjusting lens group and the previous adjusting lens group;
simulating the deviation position and the deviation angle of the current adjusting lens group relative to the previous adjusting lens group based on the spherical center image data;
judging whether the current adjusting lens group is coaxial with the reference optical axis or not according to the deviation position and the deviation angle, and correspondingly prompting a judging result;
if not, the position and the angle of the current adjusting lens group are adjusted until the current adjusting lens group is adjusted to be coaxial with the reference optical axis.
4. The method for assembling and adjusting multiple mirrors according to claim 2, wherein the step of adjusting the position of the current assembled and adjusted mirror group by the mirror positioner to make the air gap between the current assembled and adjusted mirror group and the previous assembled and adjusted mirror group meet the preset requirement comprises the following steps:
moving the mirror surface positioning instrument to a second calibration position, so that signal light emitted by the mirror surface positioning instrument is coaxial with the reference optical axis;
acquiring relevant parameters of the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, wherein the relevant parameters comprise thicknesses, refractive indexes and curvature radiuses of lenses in the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group and actual air intervals among all the adjusting lens groups;
calculating a theoretical air interval between the current adjusting lens group and the previous adjusting lens group through the related parameters;
calculating an air interval error between the current adjusting lens group and the previous adjusting lens group according to the actual air interval and the theoretical air interval between the current adjusting lens group and the previous adjusting lens group;
judging whether the air interval error is smaller than a preset air interval error or not, and correspondingly prompting a judging result;
if not, the position of the current adjusting lens group is adjusted until the air interval error between the current adjusting lens group and the previous adjusting lens group is smaller than the preset air interval error.
5. A multi-mirror assembly adjustment device, comprising:
an optical platform for mounting a plurality of lens groups;
the support seat is movably arranged on the optical platform;
the first data acquisition unit is arranged on the supporting seat and is used for acquiring first data, and the position and the angle of the current adjusting lens group on the optical platform are adjusted through the first data, so that the current adjusting lens group is adjusted to be coaxial with the reference optical axis;
the second data acquisition unit is arranged on the supporting seat and is used for acquiring second data, and the position of the current adjusting lens group on the optical platform is adjusted through the second data, so that the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement;
the control unit is in signal connection with the first data acquisition unit and the second data acquisition unit;
the control unit is used for calculating the deviation position and the deviation angle of the current adjusting lens group relative to the previous adjusting lens group according to the first data fed back by the first data acquisition unit, and judging whether the current adjusting lens group is coaxial with the reference optical axis or not according to the deviation position and the deviation angle;
the control unit is also used for calculating an air interval error between the current adjusting lens group and the previous adjusting lens group according to the second data fed back by the second data acquisition unit, and judging whether the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement or not through the air interval error.
6. The multi-lens assembly and adjustment device according to claim 5, wherein the first data is spherical image data of all lenses in the current lens assembly and the previous lens assembly; the first data acquisition unit comprises an internal focusing telescope and an image sensor;
the internal focusing telescope is used for imaging all lenses in the current adjusting lens group and the previous adjusting lens group onto the image sensor;
the image sensor is used for transmitting all sphere center image data received on the target surface to the control unit.
7. The multi-mirror assembly tuning device of claim 6, wherein the second data is an actual air gap between all of the tuning mirror sets; the second data acquisition unit comprises a mirror surface positioning instrument, wherein the mirror surface positioning instrument is used for analyzing and calculating the actual air intervals between the current adjusting mirror group and all the adjusting mirror groups at the front end of the current adjusting mirror group, and transmitting the analyzed and calculated actual air intervals to the control unit.
8. The multi-lens assembly adjusting apparatus according to claim 7, wherein the control unit calculates an air gap error between a current adjusting lens group and a previous adjusting lens group according to the second data fed back by the second data acquisition unit, specifically comprising:
acquiring relevant parameters of the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group, wherein the relevant parameters comprise thicknesses, refractive indexes and curvature radiuses of lenses in the current adjusting lens group and all the adjusting lens groups at the front end of the current adjusting lens group and actual air intervals among all the adjusting lens groups;
calculating a theoretical air interval between the current adjusting lens group and the previous adjusting lens group through the related parameters;
and calculating an air interval error between the current adjusting lens group and the previous adjusting lens group through the actual air interval and the theoretical air interval between the current adjusting lens group and the previous adjusting lens group.
9. The multi-lens assembly and adjustment device according to claim 7, wherein the inner focusing telescope and the mirror positioner are mounted on the support base, respectively, the inner focusing telescope is coaxial with the reference optical axis when the support base is moved to the first calibration position, and the mirror positioner emits signal light coaxial with the reference optical axis when the support base is moved to the second calibration position.
10. The multi-lens assembling and adjusting device according to claim 5, further comprising a prompting unit, wherein the prompting unit is in signal connection with the control unit, and the control unit is further used for correspondingly prompting the assembling and adjusting process of the current assembling and adjusting lens group through the prompting unit; the prompt comprises a result prompt of whether the current adjusting lens group is coaxial with the reference optical axis or not and a result prompt of whether the air interval between the current adjusting lens group and the previous adjusting lens group meets the preset requirement or not.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118033609A (en) * | 2024-04-11 | 2024-05-14 | 中国科学院长春光学精密机械与物理研究所 | Optical axis calibration method based on non-coaxial receiving-transmitting laser ranging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118033609A (en) * | 2024-04-11 | 2024-05-14 | 中国科学院长春光学精密机械与物理研究所 | Optical axis calibration method based on non-coaxial receiving-transmitting laser ranging system |
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