KR102139670B1 - Laser dazzling effectiveness measuring apparatus and method - Google Patents

Abstract

The present invention relates to an apparatus and a method for measuring a laser dazzling effect. The apparatus for measuring the laser dazzling effect according to one embodiment, in the apparatus for measuring the laser dazzling effect according to a change in a distance from a light source to an image sensor, may comprise: a light source which irradiates light rays to measure the dazzling effect; an image sensor which receives the light rays irradiated from the light source; and a light control optical system positioned between the light source and the image sensor and configured to simulate an effect of varying the distance from the light source to the image sensor by adjusting a divergence angle of light incident from the light source.

Description

Laser dazzling effect measurement apparatus and method {LASER DAZZLING EFFECTIVENESS MEASURING APPARATUS AND METHOD}

The following description relates to a laser dazzling effect degree measuring device.

The laser dazzling effect is an effect of intentionally distorting an acquired image of an image sensor by irradiating a laser to the image sensor. The laser dazzle is used for the purpose of disturbing an image such as location information, movement information, and shape distortion of an object by distorting the image of the image sensor. The laser dazzling effect is an effect using light, and the response of the image sensor according to ambient light is an important factor. In general, an image sensor has a dynamic range value that is a ratio of a minimum value and a maximum value of light that can be obtained. The image acquired by the image sensor depends on the daylight, matte, and moonlight conditions. In terms of the laser dazzling effect, the intensity of light required to induce saturation of the image sensor light-receiving unit varies depending on the ambient illumination.

The image sensor is accompanied by an optical system structure to acquire image information, and the optical system is variously designed according to the performance, specifications, and purpose of use of the image sensor. Therefore, even if the incident angle of the light source is the same, the area of the light receiving portion of the image sensor exposed to the light is different. This is directly related to the laser dazzling effect. In addition, the physical structure of the image sensor as well as the image acquisition conditions of the image sensor on the software affect the laser dazzling effect. Among the image acquisition conditions, relatively important factors in image acquisition are gain factor, exposure time, and resolution. In the analysis of the dazzling effect, even considering the optical and physical structures related to the image sensor and image acquisition conditions, considerable conditions are derived, and even if the displacement is controlled, numerous conditions are related to the laser dazzling effect.

In general, visible lasers are mainly used for laser dazzling effects reported previously and laser dazzlers sold commercially abroad. In order to maximize the laser dazzling effect, research on various light sources must be carried out. The reason for this is that the characteristics of the image sensor vary as mentioned above. The semiconductor-based image sensor has various absorption bands depending on the purpose of use, and this characteristic cannot be said that the maximum absorption wavelength band is always limited to the visible light region.

Therefore, in order to analyze the laser dazzling effect, it is required to analyze the light receiving conditions of the image sensor by the light source and the characteristics of the light source required for saturation of the light receiving unit, and it is also necessary to analyze the dazzling effect diagram for various wavelength bands This is an increasing situation.

The above-described background technology is possessed or acquired by the inventor during the derivation process of the present invention, and is not necessarily a known technology disclosed to the general public prior to the filing of the present invention.

An object of one embodiment is to provide an apparatus and method for measuring laser dazzling effectiveness.

The apparatus for measuring laser dazzling effect according to an embodiment of the present invention includes a dazzling effect measuring apparatus for measuring a dazzling effect according to a change in a distance from a light source to an image sensor, irradiating a light beam to measure the dazzling effect A light source; an image sensor that receives light emitted from the light source; And it is located between the light source and the image sensor, by adjusting the divergence angle of the light incident from the light source, it may include a light control optical system for simulating the effect of changing the distance from the light source to the image sensor.

The apparatus for measuring laser dazzling effect according to an embodiment includes: a first beam sampler positioned between the light source and the light control optical system and reflecting at least a portion of a light beam; A first beam profiler for receiving light reflected from the first beam sampler; a second beam sampler positioned between the light conditioning optical system and the image sensor and reflecting at least a portion of the light beam; A second beam profiler for receiving light reflected from the second beam sampler; And it is possible to control the light source and the light control optical system to adjust the light output and the divergence angle of the light beam, and measure the divergence angle of the light beam based on the area of the light beams received by the first and second beam profilers It may further include a control unit.

An apparatus for measuring laser dazzling effectiveness according to an embodiment may include a third beam sampler positioned between the light control optical system and the image sensor and reflecting at least a portion of light rays; The third beam sampler may further include an output measuring unit for measuring the output size of the light reflected from the third beam sampler.

It may further include a rotating plate that supports a plurality of light sources including the light source and is rotatably installed so that any one light source among the plurality of light sources can selectively direct the image sensor.

The rotating plate may be rotatable in a circumferential direction around the image sensor.

The control unit may simulate a peripheral illumination environment by selectively driving a plurality of light sources radially installed on the rotating plate around the image sensor.

Further comprising a rotation stage for rotatably supporting the image sensor, the control unit may rotate the rotation stage to adjust the angle of the light emitted to the image sensor.

The rotation stage may rotate the image sensor based on two rotation axes perpendicular to an optical axis to which light is irradiated to the image sensor.

The apparatus for measuring laser dazzling effectiveness according to an embodiment includes: a wavelength plate positioned between the light source and the light control optical system and changing a polarization state or a transmission degree of light output from the light source; And a wavelength plate rotating device that rotates the wavelength plate to adjust a polarization state or a transmission degree of light passing through the wavelength plate.

A light source, an image sensor for receiving light emitted from the light source, a beam profiler for sensing information on the characteristics of the light source, and a part of the light emitted from the light source is guided to the image sensor and irradiated The rest of the light beam, the control method of the laser dazzling effect measurement apparatus according to an embodiment including a beam sampler that guides the beam profiler, includes a type of the light source, characteristics of the light source, or irradiation conditions of the light source Changing at least one measurement factor among measurement conditions; Storing light source characteristic information sensed by the beam profiler while the at least one measurement factor is changed; Storing the dazzling effect diagram displayed by the image sensor in a state in which the at least one measurement factor is changed; And storing the dazzling characteristic for the at least one measurement factor through the light source characteristic information and the dazzling effect diagram.

The dazzling effect measurement apparatus may further include a rotating plate that supports a plurality of light sources including the light source and is rotatably installed so that any one light source among the plurality of light sources can selectively direct the image sensor. The step of changing the measurement factor may include changing the type of light source collimated to the image sensor by rotating the rotating plate.

The step of changing the measurement factor may further include changing a peripheral illumination condition by selectively driving a plurality of light sources radially installed on the rotating plate around the image sensor.

The dazzling effect measurement apparatus may further include a rotation stage rotatably supporting the image sensor based on two rotation axes perpendicular to an optical axis to which the light is irradiated to the image sensor, and changing the measurement factor The step may include rotating the rotating stage to change the irradiation angle of the light beam.

The dazzling effect measuring apparatus may further include a wavelength plate installed on a path of a light beam output from the light source to modify the polarization state of the light beam, and changing the measurement factor may include changing the wavelength plate. And rotating to change the polarization state of the light beam irradiated to the image sensor.

The dazzling effect measuring device may further include a light control optical system positioned between the light source and the image sensor and adjusting a divergence angle of light incident from the light source, wherein changing the measurement factor comprises: And changing characteristics of the light source including the output of the light source and the divergence angle of the light beam.

The apparatus for measuring laser dazzling effect according to an embodiment includes: a first light source irradiating a first light beam to measure the dazzling effect; An image sensor that receives light emitted from the first light source; A second light source that irradiates a second light beam on a path of light beams output from the first light source; A light coupling unit installed at a portion where the first light beam and the second light beam intersect to couple the first light beam and the second light beam; And a blocking element capable of blocking at least a portion of the light beam emitted from at least one of the first light source and the second light source.

The blocking element may include: a first wave plate installed in a path of the light beam emitted from the first light source to modify a polarization state of the first light beam; A second wave plate installed in a path of the light beam irradiated from the second light source to modify a polarization state of the second light beam; And a wavelength plate rotating device that rotates the first or second wavelength plate to adjust a polarization state of light rays passing through the first or second wavelength plate.

The apparatus for measuring laser dazzling effect according to an embodiment includes a polarization beam splitter installed in an optical path between the light coupling unit and the image sensor; A beam characteristic measuring unit that receives light reflected from the polarizing beam splitter; And controlling the first light source, the second light source, and the wavelength plate rotating device to adjust the wavelength characteristics of the light beam irradiated to the image sensor, and to measure the light beam characteristics based on information measured by the beam property measurement unit. It may further include a control unit.

The apparatus for measuring laser dazzling effectiveness according to an embodiment supports a plurality of first light sources including the first light source, and any one of the plurality of first light sources can selectively direct the image sensor It may further include a first rotating plate that is rotatably installed.

The apparatus for measuring laser dazzling effect according to an embodiment supports a plurality of second light sources including the second light source, and any one of the plurality of second light sources can selectively direct the light coupling unit It may further include a second rotating plate that is rotatably installed.

The apparatus for measuring laser dazzling effectiveness according to an embodiment is located between the light coupling unit and the image sensor, and by adjusting the divergence angle of the first light beam or the second light beam, the first light source or the second light source It may further include a light control optical system for simulating the effect that the distance from to the image sensor is changed.

The light coupling unit may include a dichroic mirror, and the first light beam and the second light beam may be incoherently coupled while passing through the dichroic mirror.

The control unit may control the first light source and the second light source to mismatch the modes of the first light beam and the second light beam coupled by the light coupling unit.

The apparatus for measuring laser dazzling effect according to an embodiment may further include a rotation stage rotatably supporting the image sensor, and the controller rotates the rotation stage to angle the light beam irradiated to the image sensor Can be adjusted.

According to the laser dazzling effect measurement apparatus and method of an embodiment, the type of light source, whether a dual light source is used, the output size of the light source, the polarization state of the light beam, the divergence angle, the area of the light beam received by the image sensor, and the image The degree of dazzling effect occurring in the image sensor can be measured according to changes in various measurement conditions including the light-receiving characteristics of the sensor, the irradiation angle of the light source, or the influence of ambient illumination.

1 is a block diagram of an apparatus for measuring a laser dazzling effect according to an embodiment.
2 is a view schematically showing the configuration of a laser dazzling effect measurement apparatus according to an embodiment
3 is a block diagram of an apparatus for measuring laser dazzling effects according to an embodiment.
4 is a view schematically showing the configuration of a laser dazzling effect measurement apparatus according to an embodiment.
5 is a block diagram of an apparatus for measuring a laser dazzling effect according to an embodiment.
6 is a view schematically showing the configuration of a laser dazzling effect measurement apparatus according to an embodiment.
7 is a view schematically showing the configuration of a laser dazzling effect measurement apparatus according to an embodiment.
8 is a flowchart of a method for measuring a laser dazzling effect according to an embodiment.
9 is a flowchart of a step of changing a measurement factor according to an embodiment.

Hereinafter, embodiments will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible, even if they are displayed on different drawings. In addition, in describing an embodiment, when it is determined that a detailed description of a related known configuration or function interferes with understanding of the embodiment, the detailed description is omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), and the like can be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

Components included in any one embodiment and components including common functions will be described using the same name in other embodiments. Unless there is an objection to the contrary, the description described in any one embodiment may be applied to other embodiments, and a detailed description will be omitted in the overlapped range.

1 is a block diagram of an apparatus for measuring laser dazzling effect according to an embodiment, and FIG. 2 is a diagram schematically showing a configuration of a laser dazzling effect diagram measuring apparatus according to an embodiment.

1 and 2, the apparatus 1 for measuring laser dazzling effect according to an embodiment may measure a dazzling effect according to a change in distance from the light source 11 to the image sensor 15. .

The laser dazzling effect measurement apparatus 1 according to an embodiment includes a light source 11, an image sensor 15, a light adjustment optical system 12, an ND filter (ND), a first beam sampler (BS1), and a first It may include a beam profiler 13, a second beam sampler BS2, a second beam profiler 14, a third beam sampler BS3, an output measurement unit 16 and a control unit C.

The light source 11 can irradiate the light beam L toward the image sensor 15. For example, the light source 11 may include a laser oscillator capable of outputting a laser beam. For example, the light source 11 may output light rays L of various wavelength bands, such as ultraviolet, visible, or infrared wavelength bands.

The image sensor 15 can receive light emitted from the light source 11. For example, the image sensor 15 may be a camera including a plurality of image sensors.

A neutral density filter (ND) can be installed in the path of the light ray L to reduce the amount of light transmitted through the light ray L.

The light adjustment optical system 12 may receive the light beam L generated by the light source 11 and adjust the light beam or divergence angle of the light beam. The light adjustment optical system 12 can simulate the effect of changing the distance from the light source 11 to the image sensor 15 by adjusting the intensity and divergence angle of the light beam L incident from the light source 11.

For example, the light adjustment optical system 12 may be installed on the optical axis of the light beam L between the light source 11 and the image sensor 15.

The first beam sampler BS1 is located between the light source 11 and the light conditioning optical system 12, and at least a portion of the light beam L passes through the light conditioning optical system 12 and the remaining portion is the first beam profiler 13 ).

The first beam profiler 13 may receive light rays L reflected from the first beam sampler BS1 and measure characteristics (profiles) of the input light rays L.

For example, the first beam sampler BS1 may be installed immediately before the light adjustment optical system 12 based on the traveling direction of the light beam L emitted from the light source 11. On the other hand, it is revealed that the first beam sampler BS1 may have a structure integrally integrated with the light adjustment optical system 32.

The second beam sampler BS2 is located between the light conditioning optical system 12 and the image sensor 15, and at least a portion of the light beam L passes through the image sensor 15 and the remaining portion is a second beam profiler 14 ).

The second beam profiler 14 may receive the light beam L reflected from the second beam sampler BS2 and measure the characteristic (profile) of the input light beam L.

For example, the beam profilers 13 and 14 may measure the luminous intensity formed for each wavelength band of the incident light L.

The third beam sampler BS3 is located between the light adjustment optical system 12 and the image sensor 15, and at least a portion of the light ray L passes through the image sensor 15, and the other portion passes through the output measurement unit 16. You can reflect towards it.

The output measuring unit 16 may receive the light beam L reflected from the second beam sampler BS2 and measure the intensity of the light beam L received.

The control unit C may control the light source 11 and the light adjustment optical system 12 to adjust the output of the light ray L and the divergence angle of the light ray L. For example, the control unit C may input the light beam L input to the image sensor 15 based on the profile of the light beam L measured by the first beam profiler 13 and the second beam profiler 14. Can measure the characteristics of For example, the control unit C may measure the intensity of the light ray L, that is, the size of the output of the light ray L, based on the information measured by the output measurement unit 16.

For example, the control unit C may measure the dazzling effect generated through the light beam L received from the light source 11 based on the image photographed by the image sensor 15, and the dazzling effect Can measure the degree of

For example, the length of the light path from which the light beam L output from the light source 11 moves to the first beam profiler 13 is the length of the light path from the light source 11 to the second beam profiler 14. It may be the same as the length of.

According to the above structure, among the light beams L output from the light source 11, the light beam L passing through the light adjustment optical system 12 and the light beam L not passing through are first beam profilers 13 and first, respectively. 2 By comparing the size of the area received by the beam profiler 14, it is possible to measure the divergence angle of the light beam L by the light adjustment optical system 12.

For example, the length of the light path from which the light beam L output from the light source 11 travels to the second beam profiler 14 is the length of the light path from the light source 11 to the output measurement unit 16. It may be the same as the length of the moving optical path.

According to the above structure, the control unit C accurately measures the area and size of the light beam L received by the second beam profiler 14 by measuring the intensity of the light beam L measured by the output measuring unit 16. It becomes possible to measure.

In addition, as for the length of the light path from which the light beam L output from the light source 11 travels to the image sensor 15, the light beam L output from the light source 11 is respectively the first beam profiler 13, The length of the optical path moving to each of the second beam profiler 14 and the output measurement unit 16 may be the same.

For example, the control unit C may control the light source 11 to adjust the wavelength band, laser mode, or output size of the light beam L output from the light source 11. For example, the control unit C may control the light adjustment optical system 12 to adjust the light beam or divergence angle of the light ray L passing through it, so that the distance from the light source 11 to the image sensor 15 is changed. You can simulate the effect. For example, the control unit C may adjust characteristics such as a gain factor, exposure time, or resolution of the image sensor 15.

For example, the controller C may include the type of the light source 11, the output size of the light source 11, the divergence angle, the area of the light ray L received by the image sensor 15, or the characteristics of the image sensor 15. At least one of the measurement conditions including the measurement parameters may be changed, and accordingly, on the basis of the image or image captured by the image sensor 15, the degree of the dazzling effect formed according to the change of the measurement factor may be measured. Can.

3 is a block diagram of an apparatus for measuring laser dazzling effect according to an embodiment, and FIG. 4 is a diagram schematically showing a configuration of a laser dazzling effect diagram measuring apparatus according to an embodiment.

3 and 4, the laser dazzling effect measurement apparatus 2 according to an embodiment includes a light source 21, a rotating plate 27, an image sensor 25, a rotating stage 28, and light adjustment Optical system 22, ND filter ND, first beam sampler BS1, first beam profiler 23, second beam sampler BS2, second beam profiler 24, third beam sampler ( BS3), an output measurement unit 26 and a control unit C.

Unlike the embodiments shown in FIGS. 1 and 2, the laser dazzling effect measurement apparatus 2 according to an embodiment may include a plurality of light sources 21, and the plurality of light sources 21 may include a rotating plate ( 27) can be installed spaced radially.

The rotating plate 27 is in a state of supporting a plurality of light sources 21 as shown in FIG. 4, so that any one light source 21 of the plurality of light sources 21 can be selectively rotated so as to be able to direct the image sensor 25 Can.

For example, the rotating plate 27 can rotate in a circumferential direction around the image sensor 25, so that the plurality of light sources 21 installed on the rotating plate 27 all maintain the state of directing the image sensor 25 Can. For example, the rotating plate 27 may have a donut shape centered on the image sensor 25. On the other hand, unlike shown, the rotating plate 27 may have an arc shape that is part of a circle, and through this structure, the volume of the entire system can be reduced.

For example, at least a portion of the plurality of light sources 21 installed on the rotating plate 27 may be formed differently from other light sources 21 having different wavelength bands, output sizes, or output modes, and thus various light sources 21 It can measure the degree of dazzling effect according to the type of. For example, the plurality of light sources 21 may irradiate the light beam L toward the center of the rotating plate 27.

For example, among the plurality of light sources 21 installed on the rotating plate 27, some of the remaining light sources 21 except for the light source 21 aligned with the light control optical system 22 irradiate light in the visible light band It can be a light source. According to the above structure, it is possible to simulate the influence of ambient illumination due to visible light.

The rotating stage 28 can rotatably support the image sensor 25. For example, the rotation stage 28 may be rotationally driven around two rotation axes perpendicular to the optical axis to which the image sensor 25 is irradiated. For example, the rotation stage 28 may rotate the image sensor 25 with respect to a rotation axis that is elongated in the vertical direction on FIG. 4. In other words, the rotation stage 28 can rotate the image sensor 25 about an axis of rotation that is perpendicular to the axis of rotation of the rotating plate 27 and is disposed parallel to the ground.

According to the above structure, it is possible to simulate the conditions under which the light beam L output from the light source 21 is inclined to the surface of the image sensor 25. In other words, it is possible to simulate a condition in which the light beam L output from the light source 21 positioned at an altitude different from that of the image sensor 25 is irradiated to the image sensor 25.

According to the laser dazzling effect measurement apparatus 2 according to an embodiment, the control unit C selects the light source 21 to be measured through rotation of the rotating plate 27 and irradiates it toward the image sensor 25. Can. The control unit C may adjust the angle of the light beam L radiated to the image sensor 25 through the adjustment of the rotation stage 28.

For example, the control unit C includes the type of the light source 21, the output size of the light source 21, the area of the light ray L received by the image sensor 25, the characteristics of the image sensor 25, and the light source 21 ) May change at least one measurement factor among measurement conditions including the influence of the irradiation angle or the influence of ambient illumination, and accordingly, based on the image or image captured by the image sensor 25, according to the change of the measurement factor The degree of dazzling effect formed can be measured.

5 is a block diagram of an apparatus for measuring laser dazzling effect according to an embodiment, and FIG. 6 is a diagram schematically showing a configuration of a laser dazzling effect diagram measuring apparatus according to an embodiment.

5 and 6, the apparatus 3 for measuring laser dazzling effect according to an embodiment includes a first light source 31a, a second light source 32b, blocking elements 391 and 392, and an image sensor (35), rotating stage (38), light coupling unit (37), light conditioning optical system (32), ND filter (ND), first beam sampler (BS1), first beam profiler (33), second beam It may include a sampler (PBS), a second beam profiler 34, a third beam sampler BS3, an output measurement unit 36 and a control unit C.

The laser dazzling effect measurement apparatus 3 according to an embodiment, unlike the configuration of the embodiment shown in FIGS. 1 to 4, uses two light sources 31a and 31b simultaneously, and the double light sources 31a and 31b It has a structure that can measure the degree of dazzling effect generated by light rays output from.

For example, of the first light source 31a and the second light source 32b, the first light source 31a may irradiate the first light beam L1 in a state toward the image sensor 35, and the second light source 32b may irradiate the second light beam L2 in a direction intersecting on the path of the first light beam L1.

For example, as illustrated in FIG. 6, the first light beam L1 and the second light beam L2 may have a configuration that intersects each other perpendicularly, but may have different angles and arrangements depending on the configuration of the optical system. It's easy to understand if you are an engineer.

For example, the first light source 31a and the second light source 32b may output light rays L1 and L2 having different wavelength bands, output sizes, or output modes.

The blocking elements 391 and 392 are installed in the path of the first light beam L1 irradiated from the first light source 31a to change the polarization state or the transmission degree of the first light beam L1 391a ), a second wave plate 391b installed in the path of the second light beam L2 irradiated from the second light source 32b to change the polarization state or transmission degree of the second light beam L2, and the first wavelength A wave plate rotating device 392 that rotates the plate 391a or the second wave plate 391b to adjust a polarization state or a transmission degree of light passing through the first wave plate 391a or the second wave plate 391b. It may include.

For example, the first wave plate 391a or the second wave plate 391b may be a half-wave plate used to change the polarization direction. Accordingly, when the control unit C rotates the first wave plate 391a or the second wave plate 391b through the wave plate rotation device 392, the first wave plate 391a or the second wave plate 391b ), the polarization direction of the first light ray L1 or the second light ray L2 may be adjusted.

For example, the control unit C may control the wave plate rotating device 392 so that the first light beam L1 and the second light beam L2 have different polarization states or blocking levels.

On the other hand, the first light source (31a) and the second light source (32b) can output the same type of light (L1, L2), in this case, the polarization characteristics or transmission degree of the two wave plates 391 are different from each other Can be set.

The light coupling unit 37 is installed at a portion where the first light beam L1 and the second light beam L2 intersect to combine the first light beam L1 and the second light beam L2, and the combined light beam L ) To the light conditioning optical system 32.

For example, the light coupling unit 37 may be a beam splitter capable of transmitting part of the light and reflecting the other part.

For example, the light coupling unit 37 may be a dichroic mirror that can selectively reflect or transmit depending on the wavelength band of the light ray L passing therethrough.

Accordingly, when the first light beam L1 and the second light beam L2 having different wavelength bands are combined with each other, incoherence light beams that do not interfere with each wavelength band by the dichroic mirror may be formed. have.

For example, the second beam sampler (PBS) may be a polarization beam splitter that selectively transmits or passes the light beam L according to the polarization state of the light beam L passing therethrough.

According to the above structure, since it is possible to selectively adjust the polarization state of the light beam L incident on the image sensor 35, it is possible to measure the degree of dazzling effect according to various polarization characteristics of the light beam L. In addition, it can be used to block the remaining rays in order to select a ray to analyze the dazzling effect degree among the two rays L1 and L2.

In addition, after the light beam L passes through the wavelength plate 391 and the polarization beam splitter (PBS), it is irradiated to each of the second beam profiler 34, the output measurement unit 36, and the image sensor 35. Due to the structural characteristics, the degree to which the plurality of light sources 31a, 31b are irradiated to each element 34, 36, 35 can be independently adjusted. For example, depending on the polarization state, the plurality of light sources 31a and 31b may be irradiated only to the second beam profiler 34 and the output measurement unit 36, and not to be irradiated to the image sensor 35. . In addition, on the contrary, the plurality of light sources 31a and 31b may be irradiated only to the image sensor 35 and not to the second beam profiler 34 and the output measurement unit 36. Of course, it is also possible to adjust the above irradiation target for each of the plurality of light sources 31a and 31b. According to this feature, it is possible to adjust the amount of light irradiated to each element 34, 35, 36 according to the object to be measured, which is helpful for efficient measurement.

For example, the third beam sampler BS3 is installed between paths in which the light beam L is reflected from the second beam sampler PBS and irradiated to the second beam profiler 34, and the light beam L passes therethrough. A portion of the can be reflected to the output measurement unit 36.

According to the laser dazzling effect degree measuring device 3 according to an embodiment, the control unit C separately controls the polarization state or the degree of transmission for each of the two light sources 31a and 31b through the wave plate rotating device 392. Accordingly, it may be possible to selectively analyze only a component of a specific type or a specific polarization direction among components of the light beam L output from the light sources 31a and 31b.

For example, the control unit C is the type of each of the two light sources 31a and 31b, the output size, the polarization state of the light ray L, the divergence angle, and the area of the light ray L received by the image sensor 35 , At least one measurement factor among measurement conditions including the light-receiving characteristics of the image sensor 35, the irradiation angle of the light source 31, or the influence of ambient illuminance, etc., may be changed, and thus photographed by the image sensor 35 On the basis of the image or the image, the degree of dazzling effect formed according to the change of the measurement factor can be measured.

7 is a view schematically showing the configuration of a laser dazzling effect measurement apparatus according to an embodiment.

Referring to FIG. 7, the apparatus 4 for measuring laser dazzling effect according to an embodiment includes a first light source 31a, a first rotation plate 41, a second light source 32b, and a second rotation plate 42. Blocking elements 391, 392, image sensor 35, rotating stage 38, light coupling 37, light conditioning optical system 32, ND filter ND, first beam sampler BS1, first It may include a beam profiler 33, a second beam sampler (PBS), a second beam profiler 34, a third beam sampler BS3, an output measurement unit 36 and a control unit C.

For example, a plurality of first light sources 31a and second light sources 31b may be formed. For example, the plurality of first light sources 31a may be installed to be radially spaced along the first rotating plate 41. For example, the plurality of second light sources 31b may be installed to be radially spaced along the second rotating plate 42.

7, each of the first rotating plate 41 and the second rotating plate 42 rotatably supports a plurality of first light sources 31a and a second light source 31b, and a plurality of first light sources 31a And light sources 31a and 31b to be irradiated to the image sensor 35 among the second light sources 31b. For example, the light sources 31a and 31b respectively provided on the rotating plates 41 and 42 may irradiate the light beam L toward the outer direction away from the center of the rotating plates 41 and 42.

According to the laser dazzling effect degree measuring apparatus 4 according to an embodiment, the control unit C is a type of individual light sources to be measured through rotation of the first rotating plate 41 or the second rotating plate 42 and combinations thereof Since it can be freely set, it is possible to more easily measure the degree of dazzling effect formed for each combination of various light sources.

8 is a flowchart of a method for measuring a laser dazzling effect according to an embodiment, and FIG. 9 is a flowchart of a step of changing a measurement factor according to an embodiment.

8 and 9, the method for measuring the laser dazzling effect according to an embodiment of the present invention uses the laser dazzling effect diagram measuring apparatus shown in FIGS. The degree of dazzling effect measured by the image sensor may be measured according to changes in the light receiving conditions of the image sensor.

For convenience of understanding and explanation, a method for measuring the laser dazzling effect degree will be described later with reference to the laser dazzling effect degree measuring apparatus 2, 3, and 4 shown in FIGS. Or it will be readily understood by those skilled in the art that suitable results can be achieved with the configuration of the measuring device through various modifications, variations, or combinations from the description of the description of the invention.

The method for measuring the laser dazzling effect according to an embodiment includes the steps of changing at least one or more measurement factors among measurement conditions including characteristics of a light source or irradiation conditions of a light source, and a state in which at least one measurement factor is changed In step, storing the light source characteristic information detected by the beam profiler (62), and storing at least one measurement factor, in the state of storing the dazzling effect diagram displayed in the image sensor (63), and light source characteristic information And storing the dazzling characteristic for at least one or more measurement factors through the dazzling effect diagram (64).

In the step of changing the measurement factor (61), the control unit (C) is the type of the light sources (31a, 31b), whether the use of the dual light sources (31a, 31b), the output size of the light source 31, and the light (L) Measurement conditions including the polarization state, the divergence angle, the area of the light ray L received by the image sensor 35, the light-receiving characteristics of the image sensor 35, the irradiation angle of the light source 31 or the influence of ambient illuminance, etc. It can be a step to change.

For example, the step of changing the measurement factor (61) includes: changing the characteristics of the light source (611), changing the type of light source (612), and changing the irradiation angle of the light beam (613) and , A step 614 of changing the polarization state of the light beam, a step 615 of changing the ambient light condition, and a step 616 of changing the shooting condition.

In step 611 of changing the characteristics of the light source, the controller C may control the light source 31 to adjust the output size or output mode. For example, the control unit C may adjust the divergence angle of the light beam L radiated to the image sensor 35 by adjusting the light adjustment optical system 32.

In step 612 of changing the type of the light source, as shown in FIG. 4, the control unit C rotates the rotating plate 27 to selectively select the light source 21 to be measured among the plurality of light sources 21. You can investigate.

For example, when the two light sources 31 are used at the same time as in the embodiment shown in FIG. 7, the control unit C individually adjusts the first rotating plate 41 or the second rotating plate 42 to adjust the first light source. The types of 31a and the second light source 31b can be individually selected.

In the step (613) of changing the irradiation angle of the light beam, the control unit (C) rotates the rotating stage (38) supporting the image sensor (35) so that the light beam (L) irradiated to the light-receiving surface of the image sensor (35). The irradiation angle can be adjusted. For example, the control unit C can be rotated to be tilted based on the optical axis of the light beam L emitted by the image sensor 35, so that a high or low angle or horizontal angle between the actual light source and the image sensor is formed. Can simulate.

In the step 614 of changing the polarization state of the light beam, the control unit C may control the wavelength plate rotating device 392 to adjust the polarization state of the light beam L passing through the wavelength plate 391.

For example, when the two light sources 31 are used at the same time as in the embodiment shown in FIG. 7, the control unit C rotates the first wave plate 391a or the second wave plate 391b individually. , It can measure the dazzling effect according to the combination of two light rays (L1, L2) having different polarization states.

In the step (615) of changing the ambient light condition, the control unit (C) has a plurality of light sources arranged radially on the rotating plates (41, 42) around the image sensor 35 as in the configuration of the embodiment shown in FIG. By driving some of the (31), it is possible to simulate the effect of ambient light due to visible light.

As another example, by setting the light source of one of the two light sources 31a and 31b to irradiate visible light, such as the configuration of the measurement devices 3 and 4 shown in FIGS. 6 and 7, the influence of ambient illumination due to the visible light Can simulate. Furthermore, as shown in the device 4 of the embodiment shown in FIG. 7, it is possible to irradiate visible light through the second light source 31b and adjust the rotation of the second rotating plate 42 to be visible to the image sensor 35 The light beams have an inclination and may simulate the conditions under which they are irradiated.

In step 616 of changing photographing conditions, the controller C may change conditions such as the exposure degree of the image sensor 35, a built-in filter, a resolution, or a gain factor.

In the step of storing the light source characteristic information (62), while at least one or more measurement factors are changed, the control unit (C) stores the light source characteristic information sensed by the beam profilers (33, 34) or the output measurement unit (36). It may be a step.

In the step (62) of storing the light source characteristic information, the control unit (C) is based on the information measured by the beam profiler (33, 34) or the output measurement unit 36, the characteristics of the light beam (L) to be measured It can be measured quantitatively.

For example, the control unit C is connected to the image sensor 35 through the light adjustment optical system 32 based on the difference in data measured by the first beam profiler 33 and the second beam profiler 34. The divergence angle of the irradiated light ray L can be measured, and the magnitude of the output of the light ray L can be measured based on the data measured by the output measurement unit 36.

For example, the control unit C may measure the wavelength band or polarization state of the light ray L based on the data measured by the beam profilers 33 and 34.

Accordingly, the control unit C controls the light source 31, the light adjustment optical system 32, or the wave plate rotating device 392, so that the light L irradiated on the image sensor 35 satisfies the intended characteristics to be measured. It may be determined whether or not, and to satisfy the corresponding characteristic, step 612 of changing the type of the light source described above may be performed.

In the step 63 of storing the dazzling effect diagram, the controller C may measure the dazzling effect diagram by analyzing the image captured by the image sensor 35 while at least one measurement factor is changed.

For example, the controller C may measure the degree of dazzling effect through image analysis of an image captured by the image sensor 35. For example, the control unit C may generate a dazzling effect diagram according to a change in a wavelength band or a polarization state of the light ray L based on information measured by the second beam profiler 34 or the output measurement unit 36. Can be measured.

In the step (64) of storing the dazzling characteristic, the control unit (C) may measure the influence of the dazzling characteristic on at least one measurement factor through the light source characteristic information and the dazzling effect diagram obtained in the above-described step. .

For example, the control unit C may store and match light source characteristic information and dazzling effect diagrams measured according to changes in at least one measurement factor, and calculate correlations between the corresponding data, so that The degree of influence of the sling characteristics can be measured.

Although the embodiments have been described by the limited drawings as described above, a person skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in a different order than the described method, and/or components such as the structure, device, etc. described may be combined or combined in a different form from the described method, or may be applied to other components or equivalents. Even if replaced or substituted by, appropriate results can be achieved.

Claims (15)

In the dazzling effect measuring apparatus for measuring the dazzling effect according to the change in distance from the light source to the image sensor,
A light source irradiating light to measure the dazzling effect;
An image sensor that receives light emitted from the light source;
A light control optical system positioned between the light source and the image sensor and simulating an effect of changing a distance from the light source to the image sensor by adjusting a divergence angle of light incident from the light source;
A first beam sampler positioned between the light source and the light conditioning optical system and reflecting at least a portion of the light beam;
A first beam profiler that receives light reflected from the first beam sampler;
A second beam sampler positioned between the light conditioning optical system and the image sensor and reflecting at least a portion of the light beam;
A second beam profiler for receiving light reflected from the second beam sampler; And
By controlling the light source and the light control optical system, the light output and the divergence angle of the light beam can be adjusted, and the divergence angle of the light beam is measured based on the area of the light beams received by the first and second beam profilers. Dazzling effect measuring device comprising a control unit.
delete According to claim 1,
A third beam sampler positioned between the light conditioning optical system and the image sensor and reflecting at least a portion of the light beam;
The dazzling effect measuring apparatus further comprises an output measuring unit for measuring the output size of the light beam reflected from the third beam sampler.
According to claim 1,
A dazzling effect measuring apparatus further comprising a rotating plate that supports a plurality of light sources including the light source and is rotatably installed so that any one of the plurality of light sources can selectively direct the image sensor.
The method of claim 4,
The rotating plate is a dazzling effect measuring device characterized in that it can be rotated in a circumferential direction around the image sensor.
The method of claim 5,
The control unit is a dazzling effect measuring apparatus, characterized in that by simulating the ambient light environment by selectively driving a plurality of light sources radially installed on the rotating plate around the image sensor.
According to claim 1,
Further comprising a rotating stage for rotatably supporting the image sensor,
The control unit rotates the rotating stage to adjust the angle of the light emitted to the image sensor Dazzling effect measuring device.
The method of claim 7,
The rotating stage is a dazzling effect measuring apparatus for rotating the image sensor based on two rotation axes perpendicular to the optical axis to which the image sensor is irradiated.
The method of claim 8,
A wavelength plate positioned between the light source and the light control optical system and changing a polarization state or transmission degree of light rays output from the light source; And
A device for measuring the dazzling effect further comprising a rotating device for rotating the wave plate to adjust a polarization state or a transmission degree of light passing through the wave plate.
A light source, an image sensor for receiving light emitted from the light source, a beam profiler for sensing information on the characteristics of the light source, and a part of the light emitted from the light source is guided to the image sensor and irradiated In the control method of the dazzling effect measuring apparatus comprising a beam sampler to guide the rest of the light beam to the beam profiler,
Changing at least one measurement factor among the measurement conditions including the type of the light source, characteristics of the light source, or irradiation conditions of the light source;
Storing light source characteristic information sensed by the beam profiler while the at least one measurement factor is changed;
Storing the dazzling effect diagram displayed by the image sensor in a state in which the at least one measurement factor is changed; And
And storing the dazzling characteristic for the at least one measurement factor through the light source characteristic information and the dazzling effect diagram.
The method of claim 10,
The dazzling effect measuring apparatus further includes a rotating plate that supports a plurality of light sources including the light source and is rotatably installed so that any one light source among the plurality of light sources can selectively direct the image sensor,
The changing of the measurement factor may include rotating the rotating plate to change the type of light source collimated to the image sensor.
The method of claim 11,
The step of changing the measurement factor,
The method of controlling the dazzling effect measuring apparatus further comprising the step of selectively driving a plurality of light sources radially installed on the rotating plate around the image sensor to change the ambient light conditions.
The method of claim 10,
The dazzling effect measuring apparatus further includes a rotating stage rotatably supporting the image sensor based on two rotation axes perpendicular to an optical axis to which the image sensor is irradiated with light.
The changing of the measurement factor may include rotating the rotating stage to change the irradiation angle of the light beam.
The method of claim 13,
The dazzling effect measuring device further includes a wavelength plate installed on a path of the light beam output from the light source to modify the polarization state of the light beam,
The changing of the measurement factor may include rotating the wavelength plate to change a polarization state of light rays radiated to the image sensor.
The method of claim 10,
The dazzling effect measuring device further comprises a light control optical system located between the light source and the image sensor, and adjusting the divergence angle of the light incident from the light source,
The changing of the measurement factor may include changing the characteristics of the light source including the output of the light source and the divergence angle of the light beam.

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