CN114895518A - Picture clearness automatic adjusting method for pattern lamp - Google Patents
Picture clearness automatic adjusting method for pattern lamp Download PDFInfo
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- CN114895518A CN114895518A CN202210490181.5A CN202210490181A CN114895518A CN 114895518 A CN114895518 A CN 114895518A CN 202210490181 A CN202210490181 A CN 202210490181A CN 114895518 A CN114895518 A CN 114895518A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
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- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
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Abstract
The invention discloses a picture sharpness automatic adjusting method of a pattern lamp, wherein the pattern lamp comprises an imaging lens, a camera and a pattern sheet assembly, a standard sharpness identification pattern and at least one projection pattern are installed on the pattern sheet assembly, and the method comprises the following steps: step 1: after the lamp is initialized, switching the quasi-definition identification pattern on the pattern piece assembly to project to form a first projection picture; step 2: moving the imaging lens to different positions to obtain first projection pictures corresponding to different current focal lengths; and step 3: the camera shoots a first projection picture of the current focal length, and the contrast value of the first projection picture of the current focal length is calculated; and 4, step 4: and repeating the step 2 and the step 3 until a first projection picture of the current focal length corresponding to the maximum contrast value is found, taking the current focal length corresponding to the maximum contrast value as a target focal length, moving the imaging lens to the position of the target focal length, and finishing focusing. The invention can automatically, quickly and accurately focus to obtain the clearest projection picture.
Description
Technical Field
The invention relates to the technical field of lamp picture definition adjustment, in particular to a picture definition automatic adjustment method of a pattern lamp.
Background
For application scenes such as outdoor travel quantification projects, pattern lamps are often used, and colorful and rich pattern effects are projected on the ground or on a wall or on the surfaces of other objects through the pattern lamps to create a light atmosphere, so that users, such as passersby or tourists, are attracted. The pattern lamps in the current market cannot ensure that the projected pictures are clear every time, because the pattern lamps often have unfocused pictures, and once the unfocused pictures are not focused, the pictures are hazy and fuzzy, so that the using effect cannot be achieved. The pattern lamp is usually in an unattended state after being installed, and in the use stage, when the pattern lamp is not focused and the picture is not clear, a manufacturer technician is often required to go to a field for debugging and solving, so that the processing mode needs to consume more manpower and material resources and has low efficiency, and the use experience is often reduced because a client waits for the technician to come for debugging for a long time. Therefore, a method for automatically adjusting the sharpness of the picture is required.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an automatic picture-definition adjusting method for a pattern lamp, which can solve the problem that the picture definition cannot be automatically adjusted.
The technical scheme for realizing the purpose of the invention is as follows: an automatic picture sharpness adjusting method of a pattern lamp is applied to the pattern lamp, the pattern lamp comprises an imaging lens, a camera and a pattern sheet assembly, a standard sharpness identification pattern and at least one projection pattern used for forming a projection picture according with a preset pattern are mounted on the pattern sheet assembly, and the automatic picture sharpness adjusting method comprises the following steps:
step 1: after the lamp is initialized, switching the quasi-definition identification pattern on the pattern piece assembly to project to form a first projection picture;
step 2: moving the imaging lens to different positions to adjust the focal length to obtain first projection pictures corresponding to different current focal lengths;
and step 3: the camera shoots a first projection picture of the current focal length, and the contrast value of the first projection picture of the current focal length is calculated;
and 4, step 4: and repeating the step 2 and the step 3 until a first projection picture of the current focal length corresponding to the maximum contrast value is found, taking the current focal length corresponding to the maximum contrast value as a target focal length, moving the imaging lens to the position of the target focal length, and finishing focusing.
Furthermore, the standard definition identification pattern comprises a circular identification pattern, and a first transverse identification pattern, a first oblique identification pattern, a first longitudinal identification pattern, a second oblique identification pattern, a second transverse identification pattern, a third oblique identification pattern, a second longitudinal identification pattern and a fourth oblique identification pattern which surround the circular identification pattern and are distributed clockwise in sequence, wherein the first transverse identification pattern, the first oblique identification pattern, the first longitudinal identification pattern, the second oblique identification pattern, the second transverse identification pattern, the third oblique identification pattern, the second longitudinal identification pattern and the fourth oblique identification pattern all comprise a plurality of identification pattern units, and the identification pattern units are patterns formed by a plurality of lines,
the first transverse recognition pattern and the second transverse recognition pattern are respectively and transversely arranged right above and right below the circular recognition pattern and are symmetrically arranged, the first longitudinal recognition pattern and the second longitudinal recognition pattern are respectively and longitudinally arranged on the left side and the right side of the circular recognition pattern and are symmetrically arranged, the first longitudinal recognition pattern and the third longitudinal recognition pattern are respectively positioned on the upper right side and the lower left side of the circular recognition pattern and are positioned on the same straight line penetrating through the circle center of the circular recognition pattern, and the second longitudinal recognition pattern and the fourth longitudinal recognition pattern are respectively positioned on the upper right side and the upper left side of the circular recognition pattern and are positioned on the same straight line penetrating through the circle center of the circular recognition pattern.
Further, the identification pattern unit comprises a first part and a second part, the first part is positioned on one side of the second part to form a rectangular structure as a whole, the first part comprises three transverse strips which are parallel to each other and have the same interval, the second part comprises four longitudinal strips which are parallel to each other and have the same interval, and the transverse strips are perpendicular to the longitudinal strips.
Further, first horizontal discernment pattern and the horizontal pattern of distinguishing of second have the same structure, all include a plurality of discernment pattern units that are horizontal setting, and each discernment pattern unit is equidistant to be set up, and increases in proper order along the discernment pattern unit size of both ends extending direction from the center, and the discernment pattern unit size of center department is minimum, and the discernment pattern unit size of distance center department is the biggest, and the discernment pattern unit size of distance center department is the same apart from both ends is the same.
Furthermore, the first longitudinal recognition pattern and the second longitudinal recognition pattern have the same structure and comprise a plurality of recognition pattern units which are longitudinally arranged, each recognition pattern unit is arranged at equal intervals, the sizes of the recognition pattern units along the extension directions of the two ends from the center are sequentially increased, the size of the recognition pattern unit at the center is the smallest, the size of the recognition pattern unit at the center is the largest, and the sizes of the recognition pattern units at the two ends at the same distance from the center are the same.
Further, the first oblique recognition pattern, the second oblique recognition pattern, the third oblique recognition pattern and the fourth oblique recognition pattern have the same structure and comprise a plurality of recognition pattern units, and the size of each pattern unit is increased in sequence from near to far along the direction from the circular recognition pattern.
Furthermore, the first oblique recognition pattern and the third oblique recognition pattern respectively form 45-degree included angles with the positive direction and the negative direction in the horizontal direction, and the second oblique recognition pattern and the fourth oblique recognition pattern respectively form 45-degree included angles with the positive direction and the negative direction in the vertical direction.
Furthermore, the pattern lamp comprises a front cover, a middle shell, a rear cover and a lamp holder, wherein one end of the front cover is fixedly connected with one end of the middle shell, a first cavity is formed between the front cover and the middle shell, the other end of the rear cover is fixedly connected with the other end of the middle shell, a second cavity is formed between the rear cover and the middle shell, the lamp holder is hinged on two sides of the middle shell, the middle shell can rotate relative to the lamp holder, the first cavity and the second cavity are communicated or separated and connected,
the camera, the imaging lens and the pattern piece assembly are arranged in the first cavity.
Further, still install focusing mirror subassembly in the first cavity, focusing mirror subassembly includes imaging lens, camera embedding are in the through-hole of protecgulum, and the through-hole is located the protecgulum off-center position department, and focusing mirror subassembly is located one side that first cavity is close to the protecgulum, and the pattern piece subassembly is located one side that first cavity is close to well casing, and focusing mirror subassembly is used for adjusting imaging lens to the distance between the lamps and lanterns light-emitting mirror hole to realize the focusing, install glass or other light-permeable parts on the lamps and lanterns light-emitting mirror hole.
Furthermore, focusing mirror subassembly still includes first backup pad, focusing step motor and second backup pad, and imaging lens's one end fixed mounting is on first backup pad, and other end activity switching second backup pad, imaging lens are scalable, and focusing step motor installs in the second backup pad, and focusing step motor is used for driving the second backup pad and keeps away from or be close to first backup pad.
The invention has the beneficial effects that: according to the invention, the different focal lengths are adjusted, and the camera is adopted to carry out image recognition after photographing, so that a clear picture with the best focal length is found, the focusing can be rapidly completed, the picture projected by the lamp after being started each time can be always in the best clear state, the focusing can be rapidly and accurately completed, the clearest projected picture can be obtained, the focusing can be automatically completed, a user particularly does not need to carry out field debugging by a technician, and the user experience and the satisfaction degree are improved.
Drawings
FIG. 1 is an exploded view of a pattern lamp;
FIG. 2 is a schematic front view of a patterned lamp;
FIG. 3 is a schematic diagram of a standard definition identification pattern;
FIG. 4 is a schematic structural diagram of an identification pattern unit;
FIG. 5 is a schematic view of the position and respective configurations of a focus lens assembly and a pattern piece assembly;
FIG. 6 is a flow chart illustrating a preferred embodiment of the present invention;
in the figure, 1-front cover, 2-camera, 3-focusing mirror component, 31-first supporting plate, 32-focusing stepping motor, 33-imaging lens, 34-second supporting plate, 4-pattern plate component, 41-main supporting plate, 42-pattern plate rotating motor, 43-pattern plate rotating motor, 44-pattern plate, 5-middle shell, 6-LED light source and heat dissipation assembly component, 7-rear cover, 8-control plate, 9-lamp holder, 10-through hole, 11-lamp light-emitting mirror hole, 12-first transverse identification pattern, 13-first inclined identification pattern, 14-first longitudinal identification pattern, 15-second inclined identification pattern, 16-second transverse identification pattern, 17-third inclined identification pattern, 18-second longitudinal identification pattern, 19-fourth oblique identification pattern, 20-circular identification pattern.
Detailed description of the preferred embodiments
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 to 6, a method for automatically adjusting a clear picture of a pattern lamp is applied to the pattern lamp, the pattern lamp includes a front cover 1, a middle housing 5, a rear cover 7 and a lamp holder 9, one end of the front cover 1 and one end of the middle housing 5 are fixedly connected and a first cavity is formed between the front cover 1 and the middle housing 5, the other end of the rear cover 7 and the other end of the middle housing 5 are fixedly connected and a second cavity is formed between the rear cover 7 and the middle housing 5. The lamp holders 9 are hinged on both sides of the middle shell 5, and the middle shell 5 can rotate relative to the lamp holders 9. The first cavity and the second cavity are communicated or connected in a separated way.
The front cover 1 is fixedly connected with the middle shell 5 through screws or other fasteners, and the rear cover 7 is fixedly connected with the middle shell 5 through screws or other fasteners.
The first cavity is internally and fixedly provided with a camera 2, a focusing lens assembly 3 and a pattern sheet assembly 4, the camera 2 is embedded in a through hole 10 of the front cover 1, and the through hole 10 is positioned at the eccentric position of the front cover 1. The focusing lens assembly 3 is located on one side of the first cavity near the front cover 1, and the pattern sheet assembly 4 is located on one side of the first cavity near the middle housing 5. The focusing lens assembly 3 is used for adjusting the distance from the imaging lens 33 to the light-emitting lens hole 11 of the lamp, and glass or other light-permeable components are installed on the light-emitting lens hole 11 of the lamp, so that focusing is realized. The pattern sheet assembly 4 is mounted with a standard definition identification pattern and at least one projection pattern for forming a projection picture.
Focusing lens subassembly 3 includes first backup pad 31, focusing step motor 32, imaging lens 33 and second backup pad 34, the one end fixed mounting of imaging lens 33 is on first backup pad 31, other end activity switching second backup pad 34, imaging lens 33 is scalable, focusing step motor 32 is installed on second backup pad 34, focusing step motor 32 can drive second backup pad 34 and keep away from or be close to first backup pad 31 to it keeps away from or is close to first backup pad 31 to drive imaging lens 33 through second backup pad 34 and follow second backup pad 34 in step. Since the distance from the first support plate 31 to the registered light-emitting mirror hole is fixed, the focusing stepping motor 32 can adjust the distance from the imaging lens 33 to the lamp light-emitting mirror hole 11, so as to realize focusing.
The pattern sheet assembly 4 comprises a main support plate 41, a pattern disc rotating motor 42, a pattern disc rotating motor 43 and a plurality of pattern discs 44, wherein the pattern disc rotating motor 42, the pattern disc rotating motor 43 and the pattern discs 44 are arranged on the main support plate 41, the pattern discs 44 are sequentially and adjacently spliced on the main support plate 41, the pattern disc rotating motor 42 and the pattern disc rotating motor 43 are both rotatably connected with the pattern discs 44, the pattern discs 44 are used for containing standard definition identification patterns and projection patterns, only one standard definition identification pattern or projection pattern is placed on one pattern disc 44, and the projection pictures formed by the projection patterns are used for forming projection pictures which accord with preset patterns, namely, the patterns required by customers are projected. The pattern disk rotating motor 42 is used for driving one of the plurality of pattern disks 44 to rotate to a position where the optical axis passes through the main supporting plate 41, which is marked as a first position, so that the light emitted by the light source just irradiates the pattern on the pattern disk 44 at the first position. So that the projection pattern or the standard definition recognition pattern is projected to form a projection picture, and the pattern disc rotation motor 43 is used for driving the standard definition recognition pattern or the projection pattern in the pattern disc 44 to rotate, so that the standard definition recognition pattern and the projection pattern are projected at different angles to form projection pictures at different angles.
The optical axis refers to a light path where a light ray emitted by the LED light source is located, and a central connecting line of the front cover 1, the focusing lens assembly 3, the pattern sheet assembly 4, the middle housing 5 and the rear cover 7 coincides with the optical axis, that is, the optical axis just passes through the centers of the cover, the focusing lens assembly 3, the pattern sheet assembly 4, the middle housing 5 and the rear cover 7.
The LED light source and the heat dissipation assembly 6 are fixedly mounted in the second cavity, the LED light source and the heat dissipation assembly 6 comprise an LED light source and a heat sink, the LED light source and the heat sink are fixedly spliced together to form the assembly, the LED light source is used for emitting light, and the heat sink is used for emitting heat generated by the LED light source to dissipate and plays a role in heat dissipation.
The control panel 8 is fixedly installed on one side of the middle shell 5, the control panel 8 is respectively electrically connected with the focusing lens assembly 3, the pattern sheet assembly 4 and the camera 2, the control panel 8 is used for controlling one of the standard definition identification patterns or the multiple projection patterns in the pattern sheet assembly 4 to rotate to the optical axis, so that the standard definition identification patterns or the projection patterns on the optical axis are projected to the surface of a target object, such as the ground or a wall surface after passing through the lamp light-emitting mirror hole 11.
In an alternative embodiment, the front cover 1 and the middle housing 5 are hermetically connected, and the sealing connection can be achieved by providing a sealing strip and/or applying a sealing glue to the joint of the front cover 1 and the middle housing 5. Similarly, the rear cover 7 and the middle housing 5 are also hermetically connected.
The utility model provides a pattern lamp can realize the focusing and have fine sealing performance, can be waterproof dustproof, prevents that outside foreign matter from getting into inside the pattern lamp.
The automatic picture definition adjusting method comprises the following steps:
step 1: after the lamp is initialized every time, namely after the lamp is started successfully, the control panel 8 controls the pattern piece assembly 4, and the standard definition identification pattern on the pattern piece assembly 4 is adjusted to be on the optical axis, so that the pattern of the standard definition identification pattern forms a projection picture.
And 2, step: the control panel 8 controls the focusing lens assembly 3 to adjust the focal length to obtain the projection picture of the current focal length.
And 3, step 3: the camera 2 shoots the projection picture of the current focal length, and sends the projection picture of the current focal length to the control panel 8, and the control panel 8 calculates the contrast value of the projection picture of the current focal length.
Calculating the contrast value of the projection picture of the front focal length, namely calculating the definition of the projection picture at different focal length positions by adopting a contrast focusing principle so as to find out the clearest projection picture, wherein the focal length corresponding to the clearest projection picture is the target position of which the focal length needs to be adjusted.
And 4, step 4: and (4) repeating the steps 2-3 until the projection picture of the current focal length corresponding to the maximum contrast value is found, taking the current focal length corresponding to the maximum contrast value as the target focal length, controlling the imaging lens 33 of the focusing lens assembly 3 to reach the position of the target focal length by the control board 8, completing focusing, and enabling the projected picture to be clearest at the moment.
The standard definition identification pattern comprises a circular identification pattern 20, a first transverse identification pattern 12, a first inclined identification pattern 13, a first longitudinal identification pattern 14, a second inclined identification pattern 15, a second transverse identification pattern 16, a third inclined identification pattern 17, a second longitudinal identification pattern 18 and a fourth inclined identification pattern 19 which are arranged around the circular identification pattern 20 and are distributed clockwise in sequence, and the first transverse identification pattern 12, the first inclined identification pattern 13, the first longitudinal identification pattern 14, the second inclined identification pattern 15, the second transverse identification pattern 16, the third inclined identification pattern 17, the second longitudinal identification pattern 18 and the fourth inclined identification pattern 19 all comprise a plurality of identification pattern units. The identification pattern unit comprises a first part and a second part, wherein the first part is positioned on one side of the second part to form a rectangular structure as a whole, the first part comprises three transverse strips which are parallel to each other and have the same interval, the second part comprises four longitudinal strips which are parallel to each other and have the same interval, and the transverse strips are vertical to the longitudinal strips.
The first horizontal recognition pattern 12 and the second horizontal recognition pattern are respectively and symmetrically arranged right above and right below the circular recognition pattern 20, the first longitudinal recognition pattern 14 and the second longitudinal recognition pattern 18 are respectively and longitudinally arranged on the left side and the right side of the circular recognition pattern 20 and symmetrically arranged, the first longitudinal recognition pattern 14 and the third longitudinal recognition pattern are respectively and longitudinally arranged on the right upper side and the left lower side of the circular recognition pattern 20 and on the same straight line passing through the circle center of the circular recognition pattern 20, and the second longitudinal recognition pattern 18 and the fourth longitudinal recognition pattern are respectively and longitudinally arranged on the right lower side and the left upper side of the circular recognition pattern 20 and on the same straight line passing through the circle center of the circular recognition pattern 20.
The first transverse identification pattern 12 and the second transverse identification pattern have the same structure and comprise a plurality of identification pattern units which are transversely arranged, each identification pattern unit is arranged at equal intervals, the sizes of the identification pattern units along the extension directions of the two ends from the center are sequentially increased, the size of the identification pattern unit at the center is the smallest, the size of the identification pattern unit at the center is the largest, and the sizes of the identification pattern units at the two ends are the same at the same distance from the center.
The first longitudinal recognition pattern 14 and the second longitudinal recognition pattern have the same structure, and comprise a plurality of recognition pattern units which are longitudinally arranged, wherein the recognition pattern units are arranged at equal intervals, the sizes of the recognition pattern units along the extension directions of the two ends from the center are sequentially increased, the size of the recognition pattern unit at the center is the smallest, the size of the recognition pattern unit at the center is the largest, and the sizes of the recognition pattern units at the two ends at the same distance from the center are the same.
The first inclined recognition pattern 13, the second inclined recognition pattern 15, the third inclined recognition pattern 17 and the fourth inclined recognition pattern 19 have the same structure and comprise a plurality of recognition pattern units, the size of each pattern unit is sequentially increased from near to far along the direction away from the circular recognition pattern 20, the first inclined recognition pattern 13 and the third inclined recognition pattern 17 respectively form 45-degree included angles with the positive direction and the negative direction of the horizontal direction, and the second inclined recognition pattern 15 and the fourth inclined recognition pattern 19 respectively form 45-degree included angles with the positive direction and the negative direction of the vertical direction.
The standard definition recognition pattern is a picture which adopts lines and is symmetrical up, down, left and right, and the contrast definition can be calculated by adopting the picture in favor of a contrast method. The reason is that when the standard definition recognition pattern is projected onto a flat or uneven object surface, the camera 2 can photograph a part or a part of any one direction of the standard definition recognition pattern and can be recognized, and since the structure using the recognition pattern unit can be well compared, focusing and focusing efficiency can be improved.
According to the invention, the different focal lengths are adjusted, and the camera 2 is adopted for image recognition after photographing so as to find out the clear picture with the best focal length, so that focusing can be rapidly completed, the projected picture of the lamp can be always in the best clear state after being started every time, and the user experience and satisfaction are improved.
The embodiments disclosed in this description are only an exemplification of the single-sided characteristics of the invention, and the scope of protection of the invention is not limited to these embodiments, and any other functionally equivalent embodiments fall within the scope of protection of the invention. Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (10)
1. An automatic picture definition adjusting method of a pattern lamp is characterized in that the automatic picture definition adjusting method is applied to the pattern lamp, the pattern lamp comprises an imaging lens, a camera and a pattern sheet assembly, a standard definition identification pattern and at least one projection pattern used for forming a projection picture according with a preset pattern are mounted on the pattern sheet assembly, and the automatic picture definition adjusting method comprises the following steps:
step 1: after the lamp is initialized, switching the quasi-definition identification pattern on the pattern piece assembly to project to form a first projection picture;
step 2: moving the imaging lens to different positions to adjust the focal length to obtain first projection pictures corresponding to different current focal lengths;
and 3, step 3: the camera shoots a first projection picture of the current focal length, and the contrast value of the first projection picture of the current focal length is calculated;
and 4, step 4: and repeating the step 2 and the step 3 until a first projection picture of the current focal length corresponding to the maximum contrast value is found, taking the current focal length corresponding to the maximum contrast value as a target focal length, moving the imaging lens to the position of the target focal length, and finishing focusing.
2. The method according to claim 1, wherein the standard definition pattern includes a circular pattern, and a first horizontal pattern, a first oblique pattern, a first vertical pattern, a second oblique pattern, a second horizontal pattern, a third oblique pattern, a second vertical pattern, and a fourth oblique pattern, which are arranged around the circular pattern and distributed clockwise in sequence, the first horizontal pattern, the first oblique pattern, the first vertical pattern, the second oblique pattern, the second horizontal pattern, the third oblique pattern, the second vertical pattern, and the fourth oblique pattern each include a plurality of pattern elements, each of which is a pattern formed by a plurality of lines,
the first transverse recognition pattern and the second transverse recognition pattern are respectively and transversely arranged right above and right below the circular recognition pattern and are symmetrically arranged, the first longitudinal recognition pattern and the second longitudinal recognition pattern are respectively and longitudinally arranged on the left side and the right side of the circular recognition pattern and are symmetrically arranged, the first longitudinal recognition pattern and the third longitudinal recognition pattern are respectively positioned on the upper right side and the lower left side of the circular recognition pattern and are positioned on the same straight line penetrating through the circle center of the circular recognition pattern, and the second longitudinal recognition pattern and the fourth longitudinal recognition pattern are respectively positioned on the upper right side and the upper left side of the circular recognition pattern and are positioned on the same straight line penetrating through the circle center of the circular recognition pattern.
3. The method as claimed in claim 2, wherein the recognition pattern unit includes a first portion and a second portion, the first portion is located at one side of the second portion to form an overall rectangular structure, the first portion includes three horizontal bars parallel to each other and having the same interval, the second portion includes four longitudinal bars parallel to each other and having the same interval, and the horizontal bars are perpendicular to the longitudinal bars.
4. The method according to claim 3, wherein the first horizontal recognition pattern and the second horizontal recognition pattern have the same structure, each of the first horizontal recognition pattern and the second horizontal recognition pattern comprises a plurality of recognition pattern units arranged in a horizontal direction, the recognition pattern units are arranged at equal intervals, the sizes of the recognition pattern units along the extending direction of the two ends from the center are sequentially increased, the size of the recognition pattern unit at the center is the smallest, the size of the recognition pattern unit at the center is the largest, and the sizes of the recognition pattern units at the two ends at the same distance from the center are the same.
5. The method according to claim 4, wherein the first vertical recognition pattern and the second vertical recognition pattern have the same structure, each of the first vertical recognition pattern and the second vertical recognition pattern comprises a plurality of recognition pattern units arranged in a vertical direction, the recognition pattern units are arranged at equal intervals, the sizes of the recognition pattern units along the extending direction of the two ends from the center are sequentially increased, the size of the recognition pattern unit at the center is the smallest, the size of the recognition pattern unit at the center is the largest, and the sizes of the recognition pattern units at the two ends at the same distance from the center are the same.
6. The method of claim 5, wherein the first tilted recognition pattern, the second tilted recognition pattern, the third tilted recognition pattern and the fourth tilted recognition pattern have the same structure, and comprise a plurality of recognition pattern units, and the size of each pattern unit increases in sequence from near to far from the circular recognition pattern.
7. The method as claimed in claim 6, wherein the first and third tilted recognition patterns are respectively at 45 ° angles to the positive and negative directions in the horizontal direction, and the second and fourth tilted recognition patterns are respectively at 45 ° angles to the positive and negative directions in the vertical direction.
8. The method according to claim 7, wherein the pattern lamp comprises a front cover, a middle housing, a rear cover, and a lamp holder, one end of the front cover and the middle housing is fixedly connected and forms a first cavity between the front cover and the middle housing, the other end of the rear cover and the middle housing is fixedly connected and forms a second cavity between the rear cover and the middle housing, the lamp holder is hinged to two sides of the middle housing, the middle housing can rotate relative to the lamp holder, the first cavity and the second cavity are connected or isolated from each other,
the camera, the imaging lens and the pattern piece assembly are arranged in the first cavity.
9. The method for automatically adjusting the sharpness of a picture of a pattern lamp according to claim 8, wherein a focusing mirror assembly is further installed in the first cavity, the focusing mirror assembly includes the imaging lens, the camera is embedded in a through hole of the front cover, the through hole is located at a position eccentric to the front cover, the focusing mirror assembly is located at a side of the first cavity close to the front cover, the pattern sheet assembly is located at a side of the first cavity close to the middle housing, the focusing mirror assembly is used for adjusting a distance from the imaging lens to a light exit mirror hole of the lamp, so as to achieve focusing, and glass or other light-permeable components are installed on the light exit mirror hole of the lamp.
10. The method of claim 9, wherein the focus lens assembly further comprises a first support plate, a focus stepping motor and a second support plate, one end of the imaging lens is fixedly mounted on the first support plate, the other end of the imaging lens is movably connected to the second support plate, the imaging lens is retractable, the focus stepping motor is mounted on the second support plate, and the focus stepping motor is used for driving the second support plate to move away from or close to the first support plate.
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| CN214840611U (en) * | 2021-03-17 | 2021-11-23 | 广州市升和电子有限公司 | Professional stage lighting automatic focusing system |
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