CN214224019U - Projecting lamp beam angle measuring device - Google Patents
Projecting lamp beam angle measuring device Download PDFInfo
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- CN214224019U CN214224019U CN202022855893.1U CN202022855893U CN214224019U CN 214224019 U CN214224019 U CN 214224019U CN 202022855893 U CN202022855893 U CN 202022855893U CN 214224019 U CN214224019 U CN 214224019U
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Abstract
The utility model relates to a projecting lamp beam angle measuring device is equipped with beam angle dipperstick, and beam angle dipperstick is equipped with the measurement cambered surface, and the measurement cambered surface is the circular arc cambered surface, measures the cambered surface and is equipped with the measurement initial point. The measuring method comprises the steps that the projection lamp faces the measuring arc surface, and the center of a light beam of the projection lamp faces a measuring original point; measuring the illumination of the central area of the light beam of the projection lamp on the measuring arc surface by using an illuminometer; and when the illuminance value is half of the maximum illuminance value, reading the angle indication scale at the position of the illuminometer, namely obtaining the beam angle of the projection lamp. The utility model adopts the arc beam angle measuring scale with the angle indication scale to measure the beam angle of the projection lamp, which is suitable for measuring larger beam angle, meets the precision requirement of measuring smaller beam angle, and reduces the length of the beam angle measuring scale; the device has simple structure, is easy to manufacture and carry, can conveniently carry out quantization operation, and is suitable for various application occasions.
Description
Technical Field
The utility model belongs to the projecting lamp is measured the check-up pivot, especially relates to a projecting lamp beam angle measuring device.
Background
In the environmental lighting engineering, the projection lamp is often adopted as a light source, and the beam angle of the projection lamp is an important factor for reasonably configuring the projection lamp, so that the beam angle of the projection lamp is often required to be measured in engineering design and construction. According to the related art specifications, the beam angle is the divergence angle of the beam of the projector at an illuminance of one half of the central illuminance. The current beam angle measurement work of the projection lamp is usually carried out in a laboratory or special test equipment, has higher requirements on sites and equipment, can not realize the test on construction sites and design sites, and has low test work efficiency and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a light projector lamp beam angle measuring device's technical scheme can conveniently realize the survey to the projecting lamp beam angle in multiple occasion.
In order to realize the purpose, the technical scheme of the utility model is that: a beam angle measuring device of a projection lamp is provided with a beam angle measuring scale, the beam angle measuring scale is provided with a measuring arc surface, the measuring arc surface is an arc surface, the measuring arc surface is provided with a measuring original point, and angle indicating scales for marking the normal angle of the arc surface are arranged along the measuring arc surface.
Furthermore, in order to facilitate the setting and positioning of the beam angle measuring scale, the beam angle measuring scale is provided with a back plane, and the back plane is parallel to a plane tangent to the measuring arc surface at the measuring origin.
Furthermore, in order to be suitable for measuring a larger beam angle and meet the precision requirement of measuring a smaller beam angle, the measuring arc surface comprises a first measuring arc surface and a second measuring arc surface, and the arc radius of the first measuring arc surface is smaller than that of the second measuring arc surface; the first measuring arc surface and the second measuring arc surface are connected at the measuring origin, the angle indicating scale value of the measuring origin is 0 degree, and the other angle indicating scale values are 2 times of the angle relative to the measuring origin.
Furthermore, in order to obtain a good measurement range and measurement accuracy, the arc radius of the first measurement arc surface is 1000mm to 2000mm, the arc angle of the first measurement arc surface is not less than 30 °, the arc radius of the second measurement arc surface is 3000mm to 5000mm, and the arc angle of the second measurement arc surface is not less than 5 °.
Furthermore, in order to accurately position the position of the projection lamp conveniently, the projection lamp beam angle measuring device is provided with a projection lamp centering rope, two ends of the projection lamp centering rope are respectively connected with two points of the measurement cambered surface, the projection lamp centering rope is provided with a centering point, and the length from the measurement cambered surface to the centering point at two ends of the projection lamp centering rope is equal to the arc radius of the measurement cambered surface.
Furthermore, a preferable centering rope structure is that one end of the projector centering rope is connected with the measurement origin, and the other end of the projector centering rope is connected with the farthest point of the measurement arc surface from the measurement origin; the beam angle measuring scale is provided with a centering column connected with two ends of the centering rope of the projection lamp, two ends of the centering rope of the projection lamp are respectively provided with a connecting hole, and the connecting holes are nested on the centering column.
Furthermore, in order to accurately measure the projection lamp, the light beam angle measuring device of the projection lamp is provided with an illuminometer guide frame which moves along the measuring arc surface, the light beam angle measuring scale is arranged along the upper edge of the measuring arc surface and is provided with an illuminometer guide rail, the illuminometer guide frame is provided with an upper guide plate which slides on the illuminometer guide rail, the upper guide plate is hung on the illuminometer guide rail through an elastic hook, the illuminometer guide frame is provided with a holding piece for mounting an illuminometer, and the illuminometer guide frame is provided with a pointer pointing to the angle indication scale.
Furthermore, in order to conveniently and accurately install the measuring device, the beam angle measuring ruler is an optical beam angle measuring ruler installed on a wall surface, the optical beam angle measuring ruler is provided with a back plane, an installation hook is arranged on the upper edge of the back plane, the optical beam angle measuring ruler is hung on a hanging rack arranged on the wall surface through the installation hook, a horizontal adjusting bolt is arranged on the lower edge of the back plane, and the horizontal adjusting bolt is used for jacking the wall surface.
The utility model has the advantages that: the arc-shaped beam angle measuring scale with the angle indication scale is adopted to measure the beam angle of the projection lamp, the beam angle measuring scale adopts a double-measuring arc surface, can be suitable for measuring a larger beam angle, meets the precision requirement of measuring a smaller beam angle, and simultaneously reduces the length of the beam angle measuring scale; a projector centering rope is adopted to accurately determine the luminous center of the projector in a quantitative mode; the illuminometer guide frame moving along the measuring cambered surface is adopted, the illuminometer can be conveniently moved, so that the illuminometer and the measuring cambered surface keep accurate relative relation, and the beam angle measuring device of the projection lamp is simple in structure, easy to manufacture and carry, capable of conveniently carrying out quantification operation and suitable for various application occasions.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a structural diagram of the beam angle measuring ruler of the present invention;
FIG. 2 is a schematic view of the measuring arc surface of the beam angle measuring ruler of the present invention;
FIG. 3 is a structural diagram of the utility model with a projector centering rope;
fig. 4 is an operation schematic diagram of the light projector centering rope of the present invention;
FIG. 5 is a view of the structure of the illuminometer guide of the present invention;
FIG. 6 is a block diagram of the present invention viewed from the back plane of the beam angle measuring ruler;
FIG. 7 is an exploded view of the illuminometer guide of the present invention;
FIG. 8 is a schematic view of the present invention installed on a wall;
FIG. 9 is an enlarged view of the beam angle measuring scale of the present invention hanging on the wall surface by the mounting hook;
FIG. 10 is a schematic diagram of the measurement method of the present invention, which determines the maximum illuminance value at the center of the light beam;
fig. 11 is a schematic view of the measurement method of the present invention for measuring the beam angle.
Detailed Description
Referring to fig. 1 and 2, a beam angle measuring device of a projection lamp is provided with a beam angle measuring scale 10, wherein the beam angle measuring scale is provided with a measuring arc surface (11, 12), the measuring arc surface is a circular arc surface, the measuring arc surface is provided with a measuring origin point X, and an angle indicating scale 13 for marking a normal angle of the arc surface is arranged along the measuring arc surface.
The beam angle measuring scale is provided with a back plane 14 parallel to a plane 14a tangent to the measurement arc at the measurement origin.
The measuring arc surfaces comprise a first measuring arc surface 11 and a second measuring arc surface 12, and the arc radius R1 of the first measuring arc surface is smaller than the arc radius R2 of the second measuring arc surface; the first measuring arc surface and the second measuring arc surface are connected at a measuring origin X, the angle indication scale value of the measuring origin is 0 degree, and the other angle indication scale values are 2 times of the angle relative to the measuring origin.
The arc radius R1 of the first measurement cambered surface is 1000 mm-2000 mm, the arc angle alpha 1 of the first measurement cambered surface is not less than 30 degrees, the arc radius of the second measurement cambered surface is 3000 mm-5000 mm, and the arc angle alpha 2 of the second measurement cambered surface is not less than 5 degrees.
As shown in fig. 1, 3 and 4, the device for measuring the beam angle of the projector lamp is provided with a projector lamp centering rope 20, two ends of the projector lamp centering rope are respectively connected with two points of the measurement arc surface, the projector lamp centering rope is provided with a centering point 2c, and the length L of the two ends (21, 22) of the projector lamp centering rope from the measurement arc surface to the centering point is equal to the arc radius R1 of the measurement arc surface (taking the arc radius of the first measurement arc surface as an example).
One end 21 of the projector centering rope is connected with the measurement origin, and the other end 22 of the projector centering rope is connected with the farthest point of the measurement arc surface from the measurement origin; the beam angle measuring scale is provided with a centering column 15 connected with two ends of the centering rope of the projection lamp, two ends of the centering rope of the projection lamp are respectively provided with a connecting hole 23, and the connecting holes are nested on the centering column.
As shown in fig. 5, 6 and 7, the light beam angle measuring device of the light projector is provided with an illuminometer guide 30 moving along the measuring arc surface, the light beam angle measuring scale is provided with an illuminometer guide rail 16 along the upper edge of the measuring arc surface, the illuminometer guide is provided with an upper guide plate 31 sliding on the illuminometer guide rail, the upper guide plate is hung on the illuminometer guide rail through an elastic hook 32, the illuminometer guide is provided with a clamping piece 33 for mounting an illuminometer, and the illuminometer guide is provided with a pointer 34 pointing to the angle indication scale.
As shown in fig. 6, 8 and 9, the beam angle measuring scale is a beam angle measuring scale installed on a wall surface, the beam angle measuring scale is provided with a back plane 14, an installation hook 40 is arranged on the upper edge of the back plane, the beam angle measuring scale is hung on a hanging rack 51 arranged on a wall surface 50 through the installation hook, and a horizontal adjusting bolt 52 is arranged on the lower edge of the back plane and is pressed against the wall surface.
Referring to fig. 1 to 11, a beam angle measuring method of a projector measures a beam angle β of the projector by using a beam angle measuring ruler 10, the beam angle measuring ruler is provided with a measuring arc surface (11, 12), the measuring arc surface is provided with a measuring origin point X, an angle indicating scale 13 for identifying an arc surface normal angle is arranged along the measuring arc surface, the arc surface normal angle value at the measuring origin point is 0 °, and the measuring method comprises the following steps:
a. placing the projection lamp 60 so that the projection lamp faces the measurement arc surface, wherein the light beam center 61 of the projection lamp faces the measurement original point X, and the light emitting center of the projection lamp is located at the central point C of the measurement arc surface;
b. measuring the illuminance of the central area of the light beam of the projection lamp on the measurement arc surface by using an illuminometer, finding out the position of the maximum illuminance, if the position of the maximum illuminance is not at the measurement origin, adjusting the irradiation direction of the projection lamp to enable the position of the maximum illuminance to be positioned at the measurement origin, and recording the maximum illuminance, as shown in fig. 10;
c. and measuring the illuminance value of the projection lamp along the measurement arc surface by using an illuminance meter, and reading the angle indication scale at the position of the illuminance meter when the illuminance value is half of the maximum illuminance value, so as to obtain the beam angle of the projection lamp, as shown in fig. 11.
When the beam angle of the projection lamp is not more than 10 degrees, the arc radius of the measuring arc surface is not less than 3000mm, and when the beam angle of the projection lamp is more than 10 degrees and not more than 60 degrees, the arc radius of the measuring arc surface is not less than 1000 mm;
as shown in fig. 4, the projector lamp light beam angle measuring device is provided with a projector lamp centering rope 20, the projector lamp centering rope is provided with a centering point 2C, in step a, one end 21 of the projector lamp centering rope is connected with a measurement origin position of the measurement arc surface, the other end 22 of the projector lamp centering rope is connected with a maximum angle indication scale position of the measurement arc surface, the projector lamp centering rope is straightened at the centering point position, so that the length from the projector lamp centering rope on two sides of the centering point to the measurement arc surface is equal to an arc radius R1 of the measurement arc surface, and a light emitting center 6C of the projector lamp is arranged at the centering point;
and in the step b, when the position of the maximum illumination value is difficult to control at the measurement origin, recording an angle indication scale value corresponding to the maximum illumination value of the illuminometer, and in the step c, subtracting the angle indication scale value corresponding to the maximum illumination value from the angle indication scale value at the position of the illuminometer to obtain the beam angle of the projection lamp.
The first embodiment is as follows:
referring to fig. 1 and 2, a beam angle measuring device for a projector is provided with a beam angle measuring scale 10.
The beam angle measuring scale is provided with two measuring arc surfaces: a first measuring arc surface 11 and a second measuring arc surface 12, the measuring arc surfaces being arc surfaces. The two measuring cambered surfaces are provided with different arc radiuses, and the arc radius R1 of the first measuring cambered surface is smaller than the arc radius R2 of the second measuring cambered surface. The first measurement cambered surface has a larger beam angle measurement range and lower measurement precision, and is suitable for measuring a larger beam angle of the projection lamp; the second measurement cambered surface has a smaller beam angle measurement range, is higher in measurement accuracy and is suitable for measuring a smaller beam angle of the projection lamp. According to engineering practice, the arc radius R1 of the first measurement cambered surface can be set to be 1000 mm-2000 mm, and the measurement device is suitable for measuring the beam angle of the projection lamp of not more than 60 degrees; the arc radius R2 of the second measurement cambered surface can be set to be 3000 mm-5000 mm, and the arc-shaped surface is suitable for measuring the beam angle of the projection lamp which is not more than 10 degrees.
An angle indication scale 13 for marking the normal angle of the cambered surface is arranged along the measuring cambered surface (comprising the first measuring cambered surface 11 and the second measuring cambered surface 12).
The measurement cambered surface is equipped with measurement origin X, and first measurement cambered surface and second measurement cambered surface are equipped with common measurement origin X, and first measurement cambered surface and second measurement cambered surface link up in measurement origin X department, and first measurement cambered surface and second measurement cambered surface are tangent in measurement origin X department promptly.
In this embodiment, the arc radius R1=1500mm of the first measurement arc surface, and the arc angle α 1=30 ° of the first measurement arc surface, where the arc angle α 1 is an arc angle between the maximum angle indication scale position 17 of the first measurement arc surface and the measurement origin X. The angle of the measurement arc indicates the maximum position of the scale or the maximum measuring range end 17. Because the measurement origin is aligned with the center of the beam when the beam angle of the projection lamp is measured, the angle value obtained on the upper side of the first measurement cambered surface is the half-angle value of the beam angle, and the maximum beam angle of the projection lamp of 60 degrees can be measured by the first measurement cambered surface. The angle of the measurement origin X indicates a scale value of 0 deg., and for convenience of use, on the first measurement arc, the other angle indicates a scale value of 2 times the angle with respect to the measurement origin, e.g., a scale value of 60 deg. at the position of the maximum range end 17.
The arc radius R1=4000mm of the second measurement arc, and the arc angle α 2=5 ° of the second measurement arc, where the arc angle α 2 refers to the arc angle between the angle indication scale maximum position 18 of the second measurement arc and the measurement origin X. The angle of the measurement camber indicates the maximum position of the scale or maximum range end 18. The angle value obtained on the upper side of the second measuring cambered surface is the half angle value of the beam angle, so that the second measuring cambered surface can measure the maximum 10-degree beam angle of the projection lamp. On the first measurement arc, the angle indication scale value is 2 times the angle relative to the measurement origin, e.g. 10 ° at the position of the end of maximum range 18.
The beam angle measuring scale is provided with a back plane 14 which is parallel to a plane 14a tangent to the measuring arc surface at the measuring origin.
This embodiment adopts the arc beam angle dipperstick that is equipped with the angle indication scale, survey the beam angle of projecting lamp, beam angle dipperstick adopts two measurement cambered surfaces, can be suitable for the measurement of great beam angle, and satisfy the accuracy requirement of less beam angle measurement, adopt the half angle measurement mode of beam angle, can effectively reduce beam angle dipperstick length, make it can be suitable for multiple service environment, if in having the ordinary indoor of clean space distance 4 meters, can measure the beam angle of projecting lamp, the biggest beam angle measuring range reaches 60, can satisfy the survey demand of general projecting lamp.
Example two:
referring to fig. 1, 3 and 4, a beam angle measuring device for a projector is an improvement of the first embodiment.
In this embodiment, projecting lamp beam angle measuring device is equipped with projecting lamp centering rope 20. Both ends of projecting lamp centering rope 20 are equipped with a connecting terminal (21, 22) respectively, and connecting terminal is equipped with connecting hole 23, and the projecting lamp centering rope is equipped with centering point 2c, and centering point 2c adopts a metal clip, fixes the central point at the projecting lamp centering rope and puts. The length of the projector centering rope is equal to two times of the length of the arc radius of the arc surface measured by the beam angle measuring ruler, and because the beam angle measuring ruler is provided with two measuring arc surfaces with different arc radii, two projector centering ropes with different lengths are required to be arranged, and one projector centering rope is 3000mm (twice of the arc radius R1 of the first measuring arc surface) and is suitable for the first measuring arc surface; the length of another projection lamp centering rope is 8000mm (twice of the arc radius R2 of the second measurement cambered surface), and the projection lamp centering rope is suitable for the second measurement cambered surface.
The beam angle measuring scale is provided with three centering columns 15 connected with two ends of a centering rope of the projection lamp, and the three centering columns 15 are respectively arranged at a measuring original point X, a farthest point (maximum range end 17) of a first measuring arc surface from the measuring original point, and a farthest point (maximum range end 18) of a second measuring arc surface from the measuring original point.
Fig. 4 illustrates an example of the projector centering rope connecting the first measurement arc surface, and the connecting hole is nested on the centering column. One end 21 of the projector centering rope is connected with the centering column at the measuring origin, and the other end 22 of the projector centering rope is connected with the centering column at the maximum measuring range end 17. Connecting terminal is equipped with the joint 24 of being connected with centering rope, and the front end of connector is held level with measuring the cambered surface, when the projecting lamp centering rope of flare-outing in centering point 2C position, the both ends of projecting lamp centering rope are equal to the circular arc radius R1 of measuring the cambered surface from measuring the cambered surface to the length of centering point 2C, and centering point 2C is located the first circular center point C of measuring the cambered surface for place the reference point of projecting lamp.
When carrying out the survey of projection lamp light beam angle, need arrange the circular arc center of measuring the cambered surface in with the luminous center of projecting lamp, this embodiment has adopted the circular arc center of projecting lamp centering rope survey measurement cambered surface, can realize accurate quantization operation, avoids personnel's observation and the deviation that subjective factor brought.
Example three:
referring to fig. 5, 6 and 7, a beam angle measuring device for a projector is an improvement of the first embodiment.
The light beam angle measuring device of the light projecting lamp is provided with an illuminometer guide frame 30 which moves along the measuring arc surface.
The beam angle measuring scale is provided with an illuminometer guide rail 16 along the upper edge of the measuring cambered surface, and the illuminometer guide rail is a square guide rail which protrudes upwards to the measuring cambered surface.
The illuminometer guide frame is provided with an upper guide plate 31 which slides on the illuminometer guide rail, the upper guide plate is hung on the illuminometer guide rail through an elastic hook 32, the illuminometer guide frame is provided with a clamping piece 33 for installing the illuminometer, and the clamping piece 33 is a spring piece and is used for clamping a probe 70 of the illuminometer.
A pointer 34 pointing to the angle indication scale 13 is provided below the illuminometer guide.
The embodiment adopts the illuminometer guide frame, so that the illuminometer (probe) can correctly move along the measuring cambered surface, and the position deviation of the illuminometer caused by human factors is avoided.
Example four:
referring to fig. 6, 8 and 9, a beam angle measuring device for a projector is an improvement of the first embodiment.
The beam angle measuring scale can be installed or placed on a support or a wall surface according to environmental conditions, so that the measuring arc surface is perpendicular to the ground. However, when the device is installed on a wall surface (or a vertical surface), if the conditions of the installation surface are not good, the arc surface cannot be ensured to be perpendicular to the ground, and at the moment, the beam angle measuring ruler is needed to carry out position adjustment.
The beam angle measuring scale of the embodiment is a beam angle measuring scale installed on a wall surface, the beam angle measuring scale is provided with a back plane 14, an installation hook 40 is arranged on the upper edge of the back plane, the hook 40 is a metal piece fixed on the back plane 14, and a horizontal condition bolt 52 is arranged at the lower end of the installation hook. The wall surface 50 is provided with a hanging rack 51, the beam angle measuring scale is hung on the hanging rack 51 through the mounting hook 40, the horizontal adjusting bolt 52 is arranged on the lower edge of the back plane to press the wall surface, the mounting angle of the beam angle measuring scale can be adjusted, and the back plane is perpendicular to the ground, namely, the measuring arc surface is perpendicular to the ground.
Example five:
referring to fig. 1 to 11, a beam angle measuring method of a projector measures a beam angle β of the projector using the beam angle measuring apparatus according to the first to fourth embodiments.
In the present embodiment, the first measurement arc surface 11 is used to explain the measurement method of the beam angle of the projector lamp, and the second measurement arc surface 12 can adopt the same measurement method of the beam angle of the projector lamp.
The measuring method comprises the following steps:
a. the projector 60 is placed to enable the projector to face the measurement cambered surface, the light beam center 61 of the projector faces the measurement original point X, the center point C of the first measurement cambered surface is determined by adopting the projector centering rope 20, one end 21 of the projector centering rope is connected with the measurement original point position of the measurement cambered surface (namely, the connecting terminal 21 is sleeved on the centering column of the measurement original point X through the connecting hole 23, the other connecting terminal 22 of the projector centering rope is sleeved on the centering column of the maximum range end 17 of the first measurement cambered surface, straightening the projector centering ropes on the two sides at the centering point 2c to ensure that the length from the projector centering ropes on the two sides of the centering point to the measuring cambered surface is equal to the arc radius R1 of the measuring cambered surface, the center point 2C is located at the arc center C of the first measuring arc surface, and the light-emitting center 6C of the projection lamp is arranged at the position of the center point 2C, so that the light-emitting center of the projection lamp is located at the center point C of the measuring arc surface.
b. Installing a probe 70 of an illuminometer on an illuminometer guide frame 30, measuring the illuminance of the central area of the light beam of the projection lamp on a measuring arc surface by using the illuminometer, moving the illuminometer guide frame to find the position of the maximum illuminance, if the pointer 34 of the illuminometer guide frame at the position does not point to an angle indication scale mark 0 degrees, namely the position of the maximum illuminance is not at a measuring original point X, adjusting the irradiation direction of the projection lamp to enable the position of the maximum illuminance to be at the position of 0 degrees (measuring original point X), and recording the maximum illuminance, as shown in FIG. 10; under some measurement conditions, if the projector naturally placed by manual adjustment is adopted, it may be difficult to accurately control the position of the maximum illumination value to be at the position of 0 °, and at this time, the angle indication scale value corresponding to the maximum illumination value of the illuminometer may be recorded, and as shown in fig. 10, the position of the maximum illumination value points to 2 °.
c. Measuring the illuminance value of the projection lamp along the measuring arc surface by using an illuminometer, moving an illuminometer guide frame, and reading an angle indication scale at the position of the illuminometer when the illuminance value displayed by the illuminometer is half of the maximum illuminance, wherein the angle indication scale is 32 degrees as shown in figure 11; since the position of the maximum illuminance points to 2 °, subtracting the angle indication scale value corresponding to the maximum illuminance from the angle indication scale value 32 at the position of the illuminance meter by 2 °, that is, obtaining the beam angle β =30 ° of the projector lamp.
Claims (8)
1. The beam angle measuring device of the projection lamp is characterized by being provided with a beam angle measuring scale, wherein the beam angle measuring scale is provided with a measuring arc surface, the measuring arc surface is an arc surface, the measuring arc surface is provided with a measuring original point, and angle indicating scales for marking the normal angle of the arc surface are arranged along the measuring arc surface.
2. The projector beam angle measuring device of claim 1, wherein the beam angle measuring ruler is provided with a back plane parallel to a plane tangent to the measuring arc at the measuring origin.
3. The beam angle measuring device of a projector as claimed in claim 1, wherein the measuring arc surface includes a first measuring arc surface and a second measuring arc surface, and the arc radius of the first measuring arc surface is smaller than the arc radius of the second measuring arc surface; the first measuring arc surface and the second measuring arc surface are connected at the measuring origin, the angle indicating scale value of the measuring origin is 0 degree, and the other angle indicating scale values are 2 times of the angle relative to the measuring origin.
4. The beam angle measuring device of a projector as claimed in claim 3, wherein the arc radius of the first measuring arc surface is 1000mm to 2000mm, the arc angle of the first measuring arc surface is not less than 30 °, the arc radius of the second measuring arc surface is 3000mm to 5000mm, and the arc angle of the second measuring arc surface is not less than 5 °.
5. The projector beam angle measuring device as claimed in claim 1, wherein the projector beam angle measuring device is provided with a projector centering rope, two ends of the projector centering rope are respectively connected to two points of the measurement arc surface, the projector centering rope is provided with a centering point, and the length from the measurement arc surface to the centering point of the two ends of the projector centering rope is equal to the arc radius of the measurement arc surface.
6. The projector beam angle measuring device of claim 5, wherein one end of the projector centering rope is connected to the measurement origin, and the other end of the projector centering rope is connected to the farthest point of the measurement arc surface from the measurement origin; the beam angle measuring scale is provided with a centering column connected with two ends of the centering rope of the projection lamp, two ends of the centering rope of the projection lamp are respectively provided with a connecting hole, and the connecting holes are nested on the centering column.
7. The beam angle measuring device of a floodlight according to claim 1, wherein the beam angle measuring device of a floodlight is provided with an illuminometer guide which moves along the measurement arc surface, the beam angle measuring scale is provided with an illuminometer guide rail along an upper edge of the measurement arc surface, the illuminometer guide is provided with an upper guide plate which slides on the illuminometer guide rail, the upper guide plate is hung on the illuminometer guide rail through an elastic hook, the illuminometer guide is provided with a holding piece for mounting an illuminometer, and the illuminometer guide is provided with a pointer pointing to the angle indication scale.
8. The beam angle measuring device of a projector as claimed in claim 1, wherein the beam angle measuring ruler is a wall-mounted beam angle measuring ruler, the beam angle measuring ruler is provided with a back plane, the upper edge of the back plane is provided with a mounting hook, the beam angle measuring ruler is hung on a hanging rack arranged on a wall surface through the mounting hook, the lower edge of the back plane is provided with a leveling bolt, and the leveling bolt is pressed against the wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022855893.1U CN214224019U (en) | 2020-12-03 | 2020-12-03 | Projecting lamp beam angle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022855893.1U CN214224019U (en) | 2020-12-03 | 2020-12-03 | Projecting lamp beam angle measuring device |
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| CN214224019U true CN214224019U (en) | 2021-09-17 |
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| CN202022855893.1U Active CN214224019U (en) | 2020-12-03 | 2020-12-03 | Projecting lamp beam angle measuring device |
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