JPH05281023A - Goniophotometer and ultraviolet irradiation device for lamp - Google Patents

Abstract

PURPOSE:To provide a goniophotometer for a lamp, which can measure light distribution under the desired conditions of a measured lamp with high efficiency and easily detect desired processing conditions while coexisting with a concrete irradiated member. CONSTITUTION:A goniophotometer for lamp is so constructed that a detecting table 21 is disposed in such a manner as to move along a light distribution measuring surface 27 set opposite to a measured lamp 41, a sensor 31 is disposed on the detecting table 21, and the detecting table 21 is moved to measure the light distribution of the measured lamp 41. The sensor 31 comprises a sensor main body 32 and a photodetecting part 33 disposed on the sensor main body 32. Plural sensors 31 are forced to intersect the moving direction 23 and disposed close to each other in such a manner that the photodetecting parts 33 will not overlap each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light distribution measuring device for a lamp and an ultraviolet irradiating device, and more specifically, it can measure the light distribution under a desired condition of a lamp to be measured with high efficiency. The present invention relates to a light distribution measuring device for a lamp that can coexist with an irradiation member so that desired processing conditions can be easily detected, and an ultraviolet irradiation device using an ultraviolet irradiation lamp as the lamp.

[0002]

2. Description of the Related Art Conventionally, an apparatus for curing, for example, an ultraviolet curable resin as a member to be irradiated is designed to irradiate the ultraviolet curable resin with ultraviolet rays to cure it while moving the ultraviolet curable resin on a conveyor. There is. Therefore, the irradiation conditions at the time of curing are determined in consideration of the mutual relationships such as the light distribution of the ultraviolet irradiation lamp, the moving speed of the ultraviolet curable resin, and the thermal influence on the ultraviolet curable resin. Among these, the lamp light distribution measuring device used for determining the most important light distribution distribution has various problems.

That is, as an example of a conventional light distribution measuring device, a sensor unit having a single light receiving surface in the sensor body is
It is placed on a conveyor and moved from one end to the other end of the light distribution measurement range, and the ultraviolet intensity is measured at multiple points along the movement path. Next, shift the position of the sensor at right angles to the moving direction,
There is known an apparatus that obtains a light distribution over the entire light distribution measurement range by repeating similar measurement again. This light distribution measuring device can obtain high measurement accuracy, but has a big problem that it takes a lot of measurement time for measurement.

As another light distribution measuring device for a lamp which solves such a drawback, a plurality of sensors are arranged in a line in a direction orthogonal to the moving direction, and these sensors are moved integrally and arranged. Devices for measuring light have been considered.
However, although such a light distribution measuring device can perform the measurement with high efficiency, it has a problem that the measurement accuracy is lower than that of the above-described light distribution measuring device.

In addition to the above-mentioned problems, the conventional light distribution measuring device for a lamp does not give sufficient consideration to the adjustment of the light distribution, so that a fine processing condition is selected, that is, an optimum processing condition is selected. The decision was difficult.

Further, the conventional lamp light distribution measuring device is
It is only to measure the light distribution, so that the sensor and the irradiated member can coexist, and they can be moved under the same irradiation light at the same time so that the measurement can be performed under the condition most closely related to production. Was not configured.

[0007]

As described above, among the conventional light distribution measuring devices, the light distribution measurement using a single sensor has a problem in that it requires a lot of time for the measurement. It was On the other hand, the method of performing light distribution measurement using a plurality of sensors has a problem that the measurement accuracy is low.

Therefore, the object of the present invention is to measure the light distribution of the lamp under test under the desired conditions with high efficiency.
It is an object of the present invention to provide a light distribution measuring device for a lamp that can easily detect a desired processing condition in coexistence with a specific member to be irradiated, and an ultraviolet irradiation device using an ultraviolet irradiation lamp as the lamp.

[0009]

In order to achieve the above object, the present invention provides a detection table movably along a light distribution measurement surface set facing the lamp to be measured, and the detection table is provided with A light distribution measuring device for a lamp, wherein a sensor for measuring the intensity of light emitted from the lamp is arranged, and the detection table is moved to measure the light distribution of the lamp to be measured, wherein the sensor is a sensor. It is characterized in that it comprises a main body and a light receiving portion arranged in the sensor main body, and the plurality of sensors are arranged so as to intersect with the moving direction and are arranged in close proximity so that the light receiving portions do not overlap each other.

[0010]

According to the present invention, the sensor table and the plurality of sensors each having the light receiving surface arranged on the sensor body are provided so as to be movable along the light distribution measuring surface set so as to face the lamp to be measured. Since the light receiving portions are arranged on the upper side so as to intersect with the moving direction, the light receiving portions do not overlap each other, but can be arranged extremely close to each other. As a result, the measurement accuracy can be significantly improved, while the measurement time can be shortened and the measurement efficiency can be improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of an embodiment of the present invention,
2 is the same plan view, FIG. 3 is the same front view, FIG. 4 is the same side view, FIG. 5 is the same plan view of the sensor driving means, and FIG. 6 is the same front view of the sensor driving means. Explanatory drawing, FIG. 7 is a side view explanatory view of the sensor driving means, FIG. 8 is a perspective explanatory view of the detection means, FIG. 9 is an enlarged plan view explanatory view of the detection means, and FIG. 10 is a sensor enlarged plan view explanatory view. 11, FIG. 11 is a front view explanatory diagram of the ultraviolet lamp, FIG. 12 is a similar light distribution measurement position explanatory diagram, and FIG.
Is the same as the time chart, FIG. 14 is the same as the measurement signal, and FIG. 15 is the same as the furnace passage time.
Is a static light distribution distribution explanatory diagram, FIG. 17 is a static light distribution curve explanatory diagram, FIG. 18 is a static three-dimensional light distribution distribution explanatory diagram, FIG. 19 is a dynamic light distribution distribution explanatory diagram, FIG. Is also an explanatory diagram of a dynamic light distribution curve, FIG. 21 is an explanatory diagram of a dynamic three-dimensional light distribution, FIG. 22 is an explanatory diagram of temperature rise measurement of a member to be irradiated, and FIG. FIG. 24 is a perspective view of the detecting means in another embodiment of the present invention.

A lamp light distribution measuring device E according to an embodiment of the present invention is provided with a detection table 21 movably along a light distribution measurement surface 27 set so as to face the lamp 41 to be measured. The sensor 31 for measuring the intensity of the irradiation light of the lamp 41 is arranged in the above, and the detection table 21 is moved to measure the light distribution of the lamp 41 to be measured. In particular, in the present invention, the sensor 31 is composed of a sensor body 32 and a light receiving portion 33 arranged in the sensor body 32, and the plurality of the sensors 31 cross the movement direction 23. At the same time, the light receiving portions 33 are arranged close to each other so as not to overlap each other. Therefore, although the light receiving portions 33 do not overlap each other, they can be arranged extremely close to each other. As a result, the measurement accuracy can be significantly improved, while the measurement time can be shortened.

The structure of each part will be further described. In this embodiment, a machine frame 10 for supporting the whole is provided, and the machine frame 10 includes a frame 11 and a table body 13 provided on the frame 11. It consists of And the mount 11
Forms a box-shaped storage chamber, and the table body 13 is
The substrate 15 is provided with the irradiation opening 14. The sensor moving means 20, the detecting means 30, and the irradiating means 40 are provided on the upper surface of the substrate 15, and the moving means 50 is attached to the lower surface. Further, a forced cooling means 60 is provided on the upper part of the irradiation means 40 and the side surface of the table body 13, and a control means 70 is housed in the housing chamber 12.

The sensor moving means 20 has a pair of guide bodies 22 extending along the irradiation opening 14, a movable body 24 movably guided by the guide bodies 22, and a movable body 24 on the movable body 24. The attached detection table 21 is provided. In addition, in the vicinity of the guide body 22, the detection table 2
1 is provided with a driving member for driving the timing belt 25a, a pair of pulleys 25b and 25c for driving the timing belt 25a, and a pair of pulleys 25b and 25c for driving the timing belt 25a. And a stepping motor 25d for rotating the.

When the timing belt 25a is driven by the rotation of the stepping motor 25d, the traveling of the timing belt 25a is transmitted to the moving member 24 through the connecting body 26, and the detection table 21 moves in the moving direction indicated by the arrow 23. It is designed to be driven by. The plane on which the detection table 21 moves is the light distribution measurement plane 27, the details of which will be described later, and the detection table 21 also moves.
The size of the moving member 24 is appropriately exchanged according to the measurement range, but the moving member 24 can be easily removed from the guide body 22.

The detection means 30 includes eight sensors 31 (31a, ..., 31) mounted on the detection table 21 described above.
31h), and a lead wire 35 connecting these sensors 31 to a control means 70 described later via connection terminals. Then, these sensors 31 are arranged corresponding to half the light emission length of the lamp 41, and measure half of the light distribution measurement surface 27. Further, as shown in the figure, the sensor 31 is arranged in a direction that intersects the moving direction 23 at an angle, and is also arranged close to the light receiving portion 33 so as not to overlap.

The arrangement of the sensor 31 described above will be described in more detail. First, the sensor 31 includes a sensor body 32 accommodating a detection member (not shown), and the sensor body 32.
It is configured by including the light receiving unit 33 arranged at. When such a sensor 31 is arranged, for example, in the direction orthogonal to the moving direction 23, the width of the sensor body 32 determines the measurement accuracy. Therefore, in this embodiment,
The sensor 31 is sequentially rearward with respect to the traveling direction (may be front)
By shifting the sensors 31 to each other, the sensors 31 do not interfere with each other in the direction orthogonal to the moving direction 23, and thereafter, the sensors 31 are arranged as close to each other as possible so that the light receiving portion 33 does not overlap. As a result, it is possible to improve the measurement accuracy due to the proximity of the light receiving unit 33, and it is possible to perform measurement with sufficient accuracy even if the entire length is not measured even for a short length such as half the light emission length.

The irradiating means 40 accommodates three irradiating devices 43 including an ultraviolet lamp 41 as a lamp to be measured, a reflecting plate 42 and the like, and these irradiating devices 43 inside and faces the irradiating opening 14. Irradiation furnace 4 provided
4 and a support body 45 that is attached to the irradiation furnace 44 through four adjusting screw members 45a and supports the irradiation device 43.
It consists of and.

Both ends of the irradiation device 43 are supported by a support 45, and the position of the irradiation device 43 can be adjusted along the moving direction 23 of the sensor 31. Further, the reflection plate 42 is configured to be rotatable left and right by 45 degrees about the center of the lamp 41, so that the irradiation direction can be adjusted.
Further, by rotating the adjusting screw member 45a, the support body 45 moves up and down, and the distance (irradiation distance) between the lamp 41 and the upper surface of the moving conveyor 51 described later can be adjusted. In the present embodiment, Irradiation distance is 100mm-300
It can be set to mm.

The irradiation furnace 44 is formed in a box shape with the table body 13 side open, and has a front end opening 44a on the front end side and a rear end opening 44b on the rear end side. Also, two partition plates 44 are detachably installed inside.
c is attached and the inside is divided into three.
Further, both side plates 44d of the irradiation furnace 44 are provided with ventilation openings (not shown) for adjusting ventilation, and an upper cover 44e and a lower cover 44f are detachably attached to cover these openings.

The moving conveyor 5 will be described in detail later.
It is also possible to install the irradiation device 43 (indicated by a broken line) below 1. Then, when the ultraviolet lamp 41 is turned on by the control means 70 described later, the moving means 50 is irradiated with light through the irradiation opening 14. The light distribution is measured on the light distribution measuring surface 27.

The moving means 50 comprises a moving conveyer 51 extending along the lower surface of the substrate 15 and stretched so as to face the irradiation opening 14, and the moving conveyer 51 has a member 52 to be irradiated. Are conveyed in the direction of arrow 53. Further, the belt 54 of the moving conveyor 51 is composed of three belts composed of mesh members, that is, belts 54a and 54b running on both sides of the irradiation opening 14 and a belt 54c running on the central part, The central belt 54c can be removed as needed. With such a detachable structure, for example, as shown by a broken line, when the ultraviolet lamp 41 is provided below and the member 52 to be irradiated is irradiated from below, both ends are belted with belts 54a and 54b, for example. By irradiating the member 52 to be irradiated on a supported conveyance jig (not shown) and moving the member 52, it is possible to perform irradiation processing from below. In addition,
A tray 55 that receives the irradiated member 52 is attached to the rear end side of the moving conveyor 51.

The above-mentioned forced cooling means 60 is used for each irradiation device 43.
, Three lamp ducts 61 attached to the table, three exhaust fans 62 for exhausting air from the lamp ducts, and three intakes provided on the sides of the table body 13 apart from the exhaust fans 62. / Exhaust fan 63 and the belt 54 of the moving conveyor 51, which communicates with the intake / exhaust fan 63.
And three conveyor ducts 64 installed between the two.

The conveyor duct 64 is provided with a large number of ventilation holes on its upper surface, and the air near the moving conveyor 51 is sucked or blown through the ventilation holes to forcibly cool the irradiated member. It is like this.

The control means 70 for controlling the above means will be described. The control means 70 includes a power supply panel 71 housed in the gantry 11, an input operation panel 72 provided on the front end side of the substrate 15, limit switches Ls1 to Ls4 provided on the moving path of the detection table 21, and other components. It is composed of a detector and the like. The power supply board 71 includes a power supply circuit, a control circuit, a ballast, a transducer, CT and PT, and the input operation board 72 includes a switch for operating each member and a panel for inputting various set values to the control circuit. ing. Further, the limit switches Ls1 to Ls4 (L
(including sc) outputs the position information of the detection table 21 to the control circuit. The operation of the control means 70 will be described in the usage mode.

Next, as an explanation of the mode of use of this embodiment,
The automatic measurement and its data processing in this embodiment will be described. The items of automatic measurement are light distribution measurement and temperature measurement of the irradiated member, and the lamp used is an ultraviolet lamp.

A Outline of Measurement System A-1 In the description of the operation of automatic light distribution measurement, the lamp 41 to be measured is abbreviated as a lamp and the sensors 31 are abbreviated as # 0 to # 7. The measuring range is 1500 mm in the moving direction, and the width D is half the emission length of the lamp to be measured.

For the light distribution measurement, the sensor is moved at a speed of 6 m / min on the detection table directly below the lamp to adjust the light distribution to 10
Automatically measures at 10 mm intervals every 0 ms.

The measuring point is a measuring range 1500 mm (L) x 3
Of 50 to 62.5 mm (D), divide L into 150 equal parts (10
(mm pitch), at the intersections (see FIG. 12) of points (# 0 to # 7) obtained by dividing D into seven equal parts, the measurement data is fetched every 100 ms and processed by a personal computer. Also, for system debugging, a signal is output to the port with PIO every 100 ms. FIG. 12 shows a light distribution measurement range, FIG. 11 shows the appearance of the lamp, and FIG. 13 shows a time chart. Further, as shown in FIG. 14, in order to confirm the timing of data acquisition during system debugging when measuring light distribution, a signal for inverting the output every time data is acquired is output to a port having a PIO. .. Describing the measurement operation with the time chart 13, the vertical axis shows each output of the limit switch, the start signal, the output of the origin PL, the output of each sensor, the output of the correction count, the output of the PIO port and the output of the motor 25d. It is taken. Then, when the start switch is pressed, the motor 25a starts running, and at Ls2, the sensor # 0 enters the measurement range, for example, the irradiation furnace 44, and measurement is started. At this time, the sensor # 7 is not in the measurement range, but the measurement is started. Then, when the sensor # 0 leaves the measurement range, the sensor # 7 is within the measurement range. Therefore, the sensor # 0 continues the measurement until the sensor # 7 leaves the measurement range. Then, the motor 25d starts decelerating at Ls3, stops at Ls4, and the measurement ends. That is, although the effective measurement time is different for each sensor, the measurement value is calculated for each sensor excluding the invalid measurement range shown in the figure.

A-2 Operation of measuring temperature rise of irradiated member (work) A-2-1 Measurement of workpiece temperature rise Thermocouple is used to measure temperature rise of irradiated member (hereinafter referred to as "workpiece") flowing on the conveyor. And measure automatically. Five thermocouples (No1 to No5) are prepared for measuring the temperature rise of the work.
It is a measuring range of 300 ° C. and is arbitrarily selected and used.
After receiving the signal that the conveyor speed has reached the set value, measure the conveyor speed, calculate the transit time in the furnace from this value by the following formula, and after receiving the work start signal (Fig. 1
Data is acquired within the furnace passage time at the sampling time of 5).

Furnace passage time = 90 / (conveyor speed) (seconds) A-2-2 Workpiece temperature rise / fall measurement 30 points of data are taken at equal intervals within the set time from the end of the workpiece temperature rise measurement. The maximum setting time is 30 minutes.

A-3 Input / output electric characteristic measurement (measured as conditions for measuring UV and temperature rise) Electric characteristic is measured by voltage, current and electric power by a transducer incorporated in the power supply circuit (see block diagram) in advance. To do.

After the measurement of the light distribution and the measurement of the temperature rise of the workpiece, the measurement is automatically performed and the measurement conditions are taken into consideration.

A-4 Conveyor speed measurement (measured as a condition for measuring temperature rise) The number of pulses of the rotary encoder incorporated in the conveyor drive unit is counted for 2 seconds and converted to the conveyor speed m / min by a personal computer. ..

A-5 Room temperature / humidity measurement (measured as conditions for measuring UV and temperature rise) Temperature and humidity are measured outside the experimental equipment. It shall be automatically measured in the same way as the electrical characteristics, and shall be taken as a measurement condition.

B Data Processing Format B-1 Processing of Light Distribution Measurement Data The processing of the light distribution measurement data is shown below.

Static Light Distribution The UV intensity at all measurement points (1208 points) is measured and data is acquired. The peak value of the data is 100%, and 90 to 10
Draw a contour line by pricing%. At this time, both the x-axis and the y-axis represent the position mm (FIG. 16) Static light distribution curve # 0 to 7 # Any one of the sensors is used, and measurement points (151 × 1 = 151) are used.
Measure the UV intensity at and collect the data. Position mm on x-axis
Is plotted, and the UV intensity (mw / cm ² ) is plotted on the y-axis, and the measurement data is plotted and represented as a graph. (Fig. 17)
Since the UV intensity changes in a wide range depending on the lamp output, it is necessary to change the vertical axis according to the peak value of the UV intensity.

A three-dimensional representation of static three-dimensional light distribution data. Position on x-axis, y-axis, UV on z-axis
Take strength. The z-axis of the child is similar to the y-axis of, and changes depending on the peak value. (Fig. 18) Dynamic light distribution data with time added as a condition. The computer simulates the data when the sensor passes under the lamp at a certain speed.
The x-axis of the data changes with the passage time in the furnace (time when 151 points were measured), and the scale changes depending on the speed. (FIG. 19) Dynamic light distribution curve data with time added as a condition. The computer simulates the data when the sensor passes under the lamp at a certain speed. Similar to (FIG. 20), only the x-axis of the data changes to the in-reactor passage time, and the x-axis changes in scale depending on the simulation time. The y-axis is the same as the data of
The scale changes depending on the peak value of V intensity.

Dynamic three-dimensional light distribution data with time added as a condition. The computer simulates the data when the sensor passes under the lamp at a certain speed. (Fig. 21), and the y-axis does not change.

B-2 Processing of workpiece temperature rise measurement data The processing of workpiece temperature rise measurement data is shown below.

Workpiece Temperature Rise Measurement At the same time when the measurement start switch is turned on, a work with a thermocouple attached is flown on the conveyor to capture data. Horizontal axis shows time (m
ax furnace passage time) and draw the transition of temperature rise in the furnace. (FIG. 22) Workpiece temperature rise / fall measurement After capturing the work temperature rise data, set time (max 30 minutes) is measured at 30 points at equal intervals, and displayed next to the data. (FIG. 23) An example in which the set time is 30 minutes is shown.

B-3 Processing of Input / Output Electrical Characteristic Measurement Data (Measurement Conditions) The processing of input / output electrical characteristic measurement data is shown below.

Input Electrical Characteristics Data measured from the primary side of the transformer is used as the input electrical characteristics, and the voltage is Vin,
The current is Iin and the power is Win. Record the measured values as measurement conditions. Also, calculate the input power factor and record it at the same time.

Input power factor = Vin × Iin / Win (Equation-1) Output electric characteristics Data measured from the secondary side of the transformer are used as output electric characteristics, and voltage is Vl, current is Il,
Let the power be Wl. Record the measured values as measurement conditions. Also, calculate the output power factor and record it at the same time. The calculation formula is shown in (formula-2).

Output power factor = Vl × Il / Wl (Equation-2) B-4 Room temperature / humidity measurement data processing (measurement conditions) Room temperature / humidity measurement data processing is shown below. Room temperature and humidity at the time of measurement are measured, and the measured values are recorded as measurement conditions.

B-5 Processing of Conveyor Speed Measurement Data (Measurement Condition) The rotary encoder pulse is counted for 2 seconds, and m / m is measured.
Convert to units of min. The rotary encoder generates 6000 pulses per revolution, and the diameter of the conveyor drive shaft is 0.06 m, so if the number of pulses for 2 seconds is n, the conveyor speed C / S = 30 × 0.06πn / 6000 = 0.0003
πn [m / min] In this embodiment, since the sensor is arranged so as to be inclined,
In the direction orthogonal to the moving direction, the sensors do not have any fear of interference, and the light receiving parts can be sufficiently close to each other. Moreover, since the irradiation distance of the lamp can be adjusted, various light distributions can be formed. Further, the one provided with the moving conveyor in the vicinity of the light distribution measurement surface as in the present embodiment can determine the optimum processing conditions of the irradiated member quickly and accurately, and can also be used as an ultraviolet irradiation device. it can.

Another embodiment will be described with reference to FIG. In the present embodiment, the sensors 31 are arranged in a staggered manner and the light receiving portions 33 are arranged in close proximity so as not to overlap. With such a configuration, there is an advantage that the measurement time can be shortened.

[0049]

As described above in detail, in the lamp light distribution measuring device of the present invention, the sensor main body and the plurality of sensors each having the light-receiving surface arranged thereon are set to face the lamp to be measured. Since it is arranged so as to intersect with the moving direction on the detection table provided so as to be movable along the light distribution measurement surface, the light receiving portions do not overlap each other, but can be arranged extremely close to each other. As a result, the measurement accuracy can be significantly improved, while the measurement time can be shortened and the measurement efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view for explaining a first embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view explanatory view of the same.

FIG. 4 is a side view explanatory diagram of the same.

FIG. 5 is an explanatory plan view of the sensor driving means.

FIG. 6 is an explanatory front view of the sensor driving means.

FIG. 7 is an explanatory side view of the sensor driving means.

FIG. 8 is a perspective explanatory view of the detection means.

FIG. 9 is an enlarged plan view of the detection means.

FIG. 10 is an explanatory diagram of an enlarged plan view of a sensor of the same.

FIG. 11 is a front view explanatory view of an ultraviolet lamp of the same.

FIG. 12 is an explanatory diagram of a light distribution measurement position.

FIG. 13 is a time chart explanatory diagram of the same.

FIG. 14 is an explanatory diagram of the same measurement signal.

FIG. 15 is an explanatory view of the passage time in the furnace.

FIG. 16 is an explanatory diagram of the same static light distribution.

FIG. 17 is an explanatory view of a static light distribution curve.

FIG. 18 is an explanatory diagram of a static three-dimensional light distribution similarly.

FIG. 19 is a similar explanatory view of dynamic light distribution.

FIG. 20 is an explanatory view of a dynamic light distribution curve.

FIG. 21 is an explanatory view of a dynamic three-dimensional light distribution similarly.

FIG. 22 is a diagram for explaining the measurement of the temperature rise of the irradiated member.

FIG. 23 is an explanatory diagram for similarly measuring the temperature rise / fall of the irradiated member.

FIG. 24 is an explanatory perspective view of the detecting means in the second embodiment of the present invention.

[Explanation of reference numerals] 21 Detection table 23 Moving direction 27 Light distribution measurement plane 31 Sensor display means 32 Sensor body 33 Light receiving part 41 Measured lamp 50 Moving means 52 Irradiated member 60 Forced cooling means

Claims (10)

[Claims] 1. A detection table is provided so as to be movable along a light distribution measurement surface set facing the lamp to be measured, and a sensor for measuring the intensity of the irradiation light of the lamp is arranged on the detection table, and the detection is performed. A lamp light distribution measuring device configured to measure a light distribution of the measured lamp by moving a table, wherein the sensor includes a sensor main body and a light receiving section arranged in the sensor main body, and a plurality of sensors are provided. A light distribution measuring device for a lamp, characterized in that the individual sensors are arranged so as to intersect with the moving direction and are arranged in close proximity so that the light receiving parts do not overlap each other. 2. The light distribution measuring device for a lamp according to claim 1, wherein the distance between the light receiving surface of the sensor and the lamp to be measured is adjustable. 3. The plurality of sensors are linearly inclined with respect to the moving direction, and are arranged close to each other so that the light receiving portions do not overlap with each other.
Alternatively, the light distribution measuring device for a lamp according to claim 2. 4. The plurality of sensors are arranged in a zigzag pattern in the moving direction, and are arranged close to each other so that the light receiving portions do not overlap each other.
The lamp light distribution measuring device according to claim 2. 5. The lamp light distribution measuring device according to claim 1, wherein the plurality of sensors are arranged at a distance of at least half the light emission length of the lamp to be measured. 6. The light distribution measurement of the lamp according to claim 1, wherein a moving means for moving the irradiated member is arranged in a plane including at least a plurality of arranged sensors. apparatus. 7. The light distribution measurement of the lamp according to claim 1, wherein a moving means for moving the irradiated member is arranged below a plane including a plurality of arranged sensors. apparatus. 8. The lamp according to claim 1, wherein the plurality of arranged sensor moving means and the irradiated member moving means are operated in synchronization with each other. Light measuring device. 9. An ultraviolet irradiation lamp, a forced cooling means for cooling the ultraviolet irradiation lamp, and a lamp light distribution measuring device according to any one of claims 1 to 8. UV irradiation device. 10. An ultraviolet irradiation device, comprising: an ultraviolet irradiation lamp; and the lamp light distribution measuring device according to claim 1.