JP2002196419A - Device and method for calculating image size, device and method for calculating output value of light, and measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily find the relationship between an output value of light from a light projection display system and an image size that can be projected. SOLUTION: A scale 2a for measuring the length (cm), a scale 2b and a scale 2c representing the height H and the width W respectively of an image, which can be projected with a prescribed output value of light (ANSI lumen) in the case an image with the image ratio of 4:3 is projected, are printed on a measuring section 2 formed by a rectangular plate member. The scale 2b and the scale 2c are formed in accordance with a value that is calculated on the basis of the relationship between the prescribed output value of light and the maximum size of the image that can be projected by the light with the prescribed output value under a prescribed condition, and on the assumption that the area of the maximum size image that can be projected is proportional to the output value of light. It is possible to find an image size that can be projected for the light projection display system with a prescribed output value of light and to find a required output value of light in order to obtain the image with a prescribed size by referring to such scales 2b, 2c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image size calculating device, a light output value calculating device, and a measuring device, and more particularly, to a size of an image that can be projected by receiving a light output value of a light projection display device. Image size calculation apparatus and method for calculating the image size, light output value calculation apparatus and method for receiving the input of the image size and calculating the light output value that the light projection display device should have to project an image of that size, Further, the present invention relates to a measuring device formed by printing a predetermined scale on a long plate-shaped member.

[0002]

2. Description of the Related Art Conventionally, a projector device (light projection display device) which has been used in a specific place such as an audio-visual room or a conference room has recently been reduced in size and price and is portable. It has become widely used in general business scenes and general households.

[0003]

By the way, in the conventional projector device, a person having specialized knowledge actually goes to a place to be provided, and according to the size, brightness, or the number of persons accommodated in the place. Thus, the most appropriate projector device is selected, and a preview is actually performed by the actually selected projector device. However, as described above, when the number of shipments increases due to progress in miniaturization and cost reduction, it is becoming difficult for a person having specialized knowledge to go to all places. As a result, it is necessary for the user to make an independent judgment without performing previews on behalf of these persons, and there is a problem that the burden on the user increases.

[0004] Further, it is also possible to transmit the above-mentioned knowledge to a sales clerk at a store or the like, and make each user explain based on such knowledge. However, since the factors for selecting the projector device are related to multiple factors,
There is also a problem that it is often difficult to select an optimal projector device in consideration of all these factors.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has an image size calculation apparatus and method, and a light output value calculation apparatus and method, which allow a user to appropriately select a projector apparatus. , And a measuring device.

Another object of the present invention is to provide an image size calculation device and method, a light output value calculation device and method, and a measurement device that assist a user in selecting an optimal projector device. And

[0007]

According to the present invention, there is provided an image size calculating apparatus for calculating the size of an image that can be projected by receiving an input of a light output value of a light projection display device. Light output value input means for receiving input of a light output value of a target light projection display device, image size calculation means for calculating a size of an image that can be projected by the light output value under a predetermined environment, and the image size There is provided an image size calculation device comprising: an image size display device for displaying the image size calculated by the calculation device on a display device.

Here, the light output value input means receives the light output value of the target light projection display device. The image size calculation means calculates the size of an image that can be projected based on the light output value under a predetermined environment. The image size display means causes the display device to display the image size calculated by the image size calculation means.

A light output value calculating device for receiving an input of an image size and calculating a light output value to be possessed by the light projection display device in order to project an image of that size, wherein the light output value calculating device receives the input of the image size. Image size input means, and light output value calculation means for calculating a light output value required to project an image of the size by the light projection device under a predetermined environment,
And a light output value display device for displaying the light output value calculated by the light output value calculation device on a display device.

Here, the image size input means receives an input of the image size. The light output value calculation means calculates a light output value necessary for projecting an image of a size by the light projection device under a predetermined environment. The light output value display means causes the display device to display the light output value calculated by the light output value calculation means.

Further, in a measuring device formed by printing a predetermined scale on a long plate-like member, a scale indicating a light output value of a light projection display device, and an image which can be projected in a predetermined environment by the light output value. And a scale indicating a size.

Here, the first scale indicates the light output value of the light projection display device. The second scale indicates an image size that can be projected under a predetermined environment, based on the light output value.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. First, before describing an embodiment of the present invention, a relationship between a light output value of a projector device and a screen size will be briefly described.

FIG. 1 shows a projector 5 and a projected image 6.
FIG. As shown in this figure, the light projected from the projector device 5 is diffused while keeping the width W and the height H at a fixed ratio, and the projected image 6 having a size corresponding to the distance L from the projector device 5 is obtained. To form Here, the ratio of the width W to the height H of the projection image 6 is about 4: 3 on a screen of a general computer or the like, and is about 16: 9 on a screen of a television receiver or the like. The rate at which the light projected from the projector device 5 is diffused differs for each projector device, and in models having a zoom function, the degree of diffusion can be adjusted.

FIG. 2 is a diagram for explaining the light output value of the projector device 5. The brightness of the light projected from the projector device 5 is determined mainly by the brightness of a built-in light source and the like.
an National Standards Institute) represented by lumens. Methods for measuring ANSI lumens include:
As shown in FIG. 2, the screen is equally divided into nine areas a1 to a9, and the central illuminances ci1 to ci9 (lux) of each area are measured. And these central illuminances ci1 to c
The average illuminance (ai = (ci1 + ci2) which is the average value of i9
+... + Ci9) / 9), and the value obtained by multiplying the area of the entire screen is defined as ANSI lumen. Since the ANSI lumen thus obtained is constant regardless of the size of the screen, it is often used as a value indicating the brightness of the projector device.

Incidentally, the brightness of the projected image 6 has a relationship of becoming dark in inverse proportion to the area thereof. Further, when the environment is bright, the illuminance of the image in which the projection image 6 can be visually recognized increases. Therefore, from the above two points, the maximum area of the projected image 6 that can be visually recognized is determined by the ANSI lumen of the projector device 5 and the brightness of the environment.

The present inventor measured the relationship between the illuminance and the maximum visible area in determining the maximum area of the visible projected image 6. The measurement conditions are as follows. (1) The screen uses a diffusion type peak gain of about 0.9. (2) The brightness of the room is measured with an illuminometer and is based on an environment where the surface illuminance on the desk is 750 lux. (3) There is no lighting fixture right above the screen. (4) There is no window at a position facing the screen or a light-blocking device is used. (5) It is assumed that a personal computer is used instead of a video.

Here, the JIS standard (JIS Z9110) is used as a ground that the above use conditions are general.
In the case of -'79), the illuminance standard of the office room, the executive room, the telephone exchange room, the control room, and the reception is 300 to 750 lux, and the illuminance standard of the sales room, the design room, the drafting room, and the entrance hall (day) is 750 lux.ル 1500 lux.

Furthermore, the Occupational Safety and Health Regulations
No. 32 and Office Hygiene Standard Regulations Ordinance 4 of the Ministry of Labor
In No. 43 of 1995, the work surface illuminance of offices and business establishments is defined as follows.

Precise work 300 lux or more Normal work 150 lux or more Coarse work 70 lux or more Therefore, it is reasonable to assume that the maximum value of horizontal illuminance (desk surface illuminance) of a general office is 750 lux. Is understood.

Under such an environment, 600 ANS
When projected using the I-lumen projector device 5 (screen ratio 4: 3), the size of a visible projected image (referred to as a projectable image size) is 52.5 inches (the diagonal length of the screen is expressed in inches). ).

Here, since there is a proportional relationship between the light output value of the projector device 5 and the maximum area of the visible projected image 6, these are tentatively represented by the following equations. . Here, P is the light output value (ANSI lumen) of the projector device 5, and S is the image size of the visible projected image 6 (the diagonal length of the image (inch)).

[0023]

(Equation 1)

When this equation is expanded for S, the following equation (2) is obtained.

[0025]

(Equation 2)

This equation shows the relationship between the light output value P of the projector device 5 and the image size that can be projected. Here, the following formula (3) exists between the screen width W, height H, and projectable image size S. Since the image size is expressed in inches, 1 inch = 2.54 cm
And

[0027]

(Equation 3)

When the image ratio is represented by a: b, the following formula (4) holds between the width W and the height H of the image.

[0029]

(Equation 4)

Therefore, from equations (2), (3) and (4),
When W is obtained, the following equation (5) is obtained.

[0031]

(Equation 5)

Similarly, when H is determined, the following equation (6) is obtained.

[0033]

(Equation 6)

In this way, an expression showing the relationship between the image ratio a: b, the light output value P, and the width W and height H of the projectable image is obtained. Next, a first embodiment of the present invention will be described.

FIG. 3 is a diagram showing a configuration example of the first embodiment of the present invention. As shown in FIG.
This embodiment is configured by a server 10, a network 11, and clients 12, 13.

Here, the server 10 is constituted by a workstation or a server machine. When there is an access from the clients 12 and 13, the server 10 performs a corresponding arithmetic processing and corresponds to the obtained result. For example, an HTML document is generated and transmitted.

The network 11 is constituted by, for example, the Internet, and transmits and receives information between the server 10 and the clients 12 and 13. Client 1
Each of the computers 2 and 13 is configured by, for example, a personal computer, and can access the server 10 and refer to desired information by activating browser software.

FIG. 4 is a diagram showing a detailed configuration example of the server 10. Incidentally, the clients 12 and 13 are also connected to the server 10.
Since the configuration is basically the same as that described above, a detailed description thereof will be omitted.

As shown in this figure, the server 10
U (Central Processing Unit) 10a (image size calculation means, search means, light output value calculation means), ROM (Read
Only Memory) 10b, RAM (Random Access Memor)
y) 10c, HDD (Hard Disk Drive) 10d (storage means), GC (Graphics Card) 10e, I / F (Interfa
ce) 10f (light output value input means, image size display means,
Illuminance-related information input means, image ratio input means, image size input means, light output value display means, illuminance value-related information input means) and a bus 10g, and a display device 10h, an input device 10i outside thereof. , And the network 11 are connected.

Here, the CPU 10a controls each unit of the apparatus in accordance with a program stored in the HDD 10d, and executes various arithmetic processes in response to requests from the clients 12, 13.

The ROM 10b stores basic programs and data executed by the CPU 10a. RAM1
0c temporarily stores a program being executed by the CPU 10a and data being calculated.

The HDD 10d stores programs and data executed by the CPU 10a. GC10e is a CPU
Draws an image according to the drawing command supplied from 10a,
The obtained image is converted into a video signal and output.

The I / F 10f converts the expression format of the data supplied from the input device 10i and executes a conversion process of the expression format of the data and the protocol so that the data can be exchanged with the network 11. .

The display device 10h is, for example, a CRT (Cath
ode Ray Tube) monitor.
The video signal supplied from 0e is displayed as an image. The input device 10i is composed of, for example, a keyboard and a mouse, and outputs data according to the operation of the operator.

Next, the operation of the above embodiment will be described. For example, a user who owns the client 12 is thinking of purchasing a projector device, and determines how large a projector device having a predetermined light output value has a projectable image size under a predetermined use environment. It is assumed that the server 10 is accessed to check.

Then, the CPU 10a of the server 10
/ F10f to detect this access, and
A predetermined HTML document stored in d is read and transmitted. As a result, the display device of the client 12 includes:
A screen 50 as shown in FIG. 5 is displayed. In this display example, a screen 50 entitled “Calculate Projectable Image Size” is displayed. In the display area of the screen 50,
Text boxes 50a to 50e and buttons 50f,
50 g is displayed.

Here, the use environment is input to the text box 50a. That is, the user can input a use environment by selecting a desired item from a pull-down menu displayed by operating an arrow button displayed on the right end of the text box 50a. here,
As the use environment, for example, office, 6 tatami mats, 8 tatami mats, 10 tatami mats, and the like are displayed as selection items.

In the text box 50b, the type of illumination of the room using the projector device is input. For example, when "office" is selected in the text box 50a, either "fluorescent light" or "downlight" can be selected. Also, "Home"
If (home 6 tatami etc.) is selected, the “fluorescent lamp” or “incandescent lamp” and its wattage (for example, 72W fluorescent lamp,
60W incandescent).

In the text box 50c, it is input whether or not the light shielding device is used. As a light blocking device, for example,
"Curtain" or "blind" can be selected. If these are not used, select "Not used".

An ANSI lumen value, which is a light output value of the projector device, is input into the text box 50d. In the text box 50e, the width W of the screen to be projected is set.
And the ratio of height H. "4: 3" is input for a general RGB monitor, and "16: 9" is input for a general television receiver.

The button 50f is operated when requesting the server 10 for a calculation based on the input value. The button 50g is operated when canceling the input value.

In such a screen 50, for example, “office” is used as the use environment, and “fluorescent light”, “unused”, and “400 ANSI” are used as the illumination type, the shading device, the light output value, and the screen ratio, respectively. Assuming that “Lumens” and “4: 3” are input and the button 50 f is operated, the input information is transmitted to the server 10 via the network 11.

The CPU 10a of the server 10 includes an I / F 10
The information is received via f, and a projectable image size suitable for the received information is obtained from the HDD 10d.
FIG. 6 is an example of a table showing the relationship between the illumination type and the light-shielding device and the projectable image size when a projector device having a light output value of 600 ANSI lumens is used in an office. On the screen 50 shown in FIG. 5, the use environment, the type of lighting, and "office"
Since “fluorescent light” and “unused” are selected, the projectable image size is “52.5
Inches "are obtained. Note that the projectable image size is a value based on the above-described equations (1) to (6).

Next, the CPU 10a acquires the light output value (400 ANSI lumens) and the screen ratio (4: 3) from the received data, and substitutes them into the equation (2) to obtain
Calculate the projectable image size S under the input environment,
Further, the width W and the height H of the projectable image are calculated by substituting into the equations (5) and (6). Specifically, 43 inches are obtained as the projected image size, and 87.4 cm and 65.5 cm are obtained as the width W and the height H.

Next, the CPU 10a obtains the model number of the projector device having the light output value input in FIG. 5 with reference to the table relating to the specifications of the projector device (see FIG. 7) stored in the HDD 10d. The table shown in FIG. 7 includes the model number of the projector device, the light output value, the required distance to the screen (the minimum required distance to the screen required when projecting an image size that can be projected in an environment of 750 lumens), and the like. And a link indicating a file in which detailed information is stored.
In this example, the light output value is 400 ANSI.
Since the lumen is input, the model numbers of the corresponding projector devices are “SNP-01XD” and “SNP-2”.
54D "and" SNP-258D ". Note that projector devices having an output equal to or greater than the input light output value can be used under such conditions, and thus all of them may be obtained.

Next, the CPU 10a converts the calculation result and the table search result into an HTML document, and transmits the HTML document to the client 12 via the network 11. As a result, as shown in FIG. 8, the display 50 of the client 12 displays the previously input screen 50 and a new screen 60 entitled “Calculation result”. On the newly displayed screen 60, the projectable image size, width W, and height H are 43 inches, 87.4 cm.
And 65.5 cm are displayed respectively.

The applicable model is SNP-01X
D, SNP-254D, and SNP-258D are displayed. Since the character strings indicating these model numbers are hypertexts, the character strings indicating the desired model numbers are clicked with a mouse or the like, so that the character strings shown in FIG.
The information stored in the file specified by the detailed information link shown in FIG.
Sent to. As a result, it is possible to refer to the detailed specifications (price, design, etc.) of the desired projector device.

As described above, according to the present invention, a projectable image size can be obtained by inputting the light output value of the projector device and the use environment, and the light output value can be obtained. Since detailed information of the projector device can be obtained at the same time, it is possible to easily select a projector device suitable for the use environment.

The above is an example in which the light output value is input and the projectable image size is calculated. However, the image size to be projected (hereinafter, referred to as a projected image size) is input, and the necessary projector device is required. It is also possible to calculate the light output value.

FIG. 9 shows an example of a display screen corresponding to such a case. In this display example, a screen 80 entitled "Calculate light output" is displayed, and its display area has text boxes 80a to 80g and buttons 80h, 8h.
0i is displayed.

Here, the use environment is input to the text box 80a. The input contents are the same as in the case of FIG. In the text box 80b, the type of illumination is input. The input contents are the same as in the case of FIG.

In the text box 80c, the use of the light shielding device or the type of the light shielding device is input. The input contents are the same as in the case of FIG. Text box 8
In 0d, the projection image size (the diagonal line of the image is shown in inches) is input.

The width W of the projected image is input to the text box 80e, and the height H of the screen is input to the text box 80f. Further, the ratio of the width W to the height H of the projection image is input to the text box 80g.

If a value is entered in any of the text boxes 80d to 80f, the other values are uniquely determined from the image ratio, so that there is no need to enter values in the other text boxes.

In such a screen 80, "office", "fluorescent light",
When "not used" and "43 inch" are input, respectively, and "4: 3" is input in the text box 80g, and then the button 80h is operated, the input information is transmitted to the network 11. Transmitted to the server 10 via the Internet.

The CPU 10a of the server 10 receives these pieces of information via the I / F 10f, and acquires the projectable image size with reference to the table shown in FIG. 6 stored in the HDD 10d. In the present example, 52.5 inches is acquired as the projectable image size.

Next, the CPU 10a calculates the light output value of the projector device by using the following formula.

[0068]

(Equation 7)

Expression (7) is based on the data that the projectable image size is 52.5 inches when the light output value of the projector device is 600 ANSI lumens. Is different from the constant “6” existing in the denominator and the numerator of the equation (8).
This can be handled by changing "00" and "52.5".

On the other hand, when the input data is the width W or the height H of the projectable image, the necessary light output value is calculated by using the following equation (9) or (10). be able to.

[0071]

(Equation 8)

[0072]

(Equation 9)

From the above equation, the CPU 10a, for example,
400 ANSI lumens are obtained as the required light output value.
Further, a projector device having a light output value of 400 ANSI lumens is searched from the table shown in FIG. Then, these data are transmitted to the client 12 via the network 11.

As a result, a new screen 90 is displayed on the display device of the client 12 together with the screen 80 as shown in FIG. In this display example, a screen 90 entitled “Calculation result” is displayed, and its display area includes
The light output value "400AN"
SI lumen "and the model number of the corresponding projector device are displayed. Also in this display example, since the character string indicating the model number of the projector device is a hypertext, the detailed specification can be referred to by clicking the desired character string.

According to the above embodiment, by inputting the size of the projected image and the environmental conditions, the required light output value of the projector device is calculated, and a list of the projector devices having the light output value and the Information on detailed specifications can be obtained.

FIG. 11 shows an example in which 6 tatami mats is selected as the use environment, 16: 9 is input as the screen ratio, and 80 cm is input as the image width W. After such an input is made, when the button 80h is operated,
The input information is transmitted to the server 10 via the network 11.
Sent to.

In the same manner as described above, the server 10 acquires the size of the image that can be projected under the input environmental conditions, appropriately changes the parameters of the above-described equations (8) to (10), Calculate the output value.

Then, the model number of the projector having the calculated light output value is detected from the table shown in FIG.
A reply is sent to the client 12 together with the light output value described above.
As a result, a screen 90 as shown in FIG. 12 is newly displayed on the display device of the client 12 together with the image 80, and a list of light output values suitable for use conditions and a projector device having the light output value is obtained. be able to. The required distance to the screen is displayed on the right side of the model number of the projector device. By referring to this value, it is determined whether or not the projector device can be actually used in the use environment. You can know.

Next, an example of a flowchart executed in the server 10 will be described with reference to FIG. 13 and FIG. FIG. 13 is a flowchart illustrating an example of a process of inputting a light output value and a use environment and calculating a projectable image size. When this flowchart is started, the following steps are executed.

Step S10: The CPU 10a sets the HDD
By reading out a predetermined HTML document stored in 10d and transmitting it via the I / F 10f, for example, the screen 50 shown in FIG. 5 is displayed on the display device of the client that has accessed.

Step S11: The CPU 10a obtains use environment conditions transmitted from a predetermined client via the network 11.

Step S12: The CPU 10a acquires a light output value in the same manner as in step S11. Step S13: The CPU 10a acquires the image ratio in the same manner as in the case of step S11.

Step S14: The CPU 10a obtains the data corresponding to the environmental conditions obtained in steps S11 to S12, that is, the projectable image size under predetermined conditions, for example, from the table shown in FIG.

Step S15: The CPU 10a changes the constant of the equation (3) according to the data obtained in step S14, and substitutes the data obtained in steps S11 to S14 to calculate a projectable image size. .

Step S16: The CPU 10a calculates the expression (5),
After changing the constant of (6), the data acquired in steps S11 to S14 is substituted, and the width W of the projectable image is substituted.
And the height H are calculated.

Step S17: The CPU 10a sets the HDD
A projector device having the light output value acquired in step S12 is searched from the table shown in FIG. 7 stored in 10d.

Step S18: The CPU 10a generates an HTML document including the calculation result and the search result, transmits the generated HTML document to the requesting client, and displays, for example, a screen 60 shown in FIG.

According to the above-described flowchart, it is possible to calculate the projectable image size from the use environment and the light output value, and to provide the client with a list of projector devices having the light output value and detailed specifications thereof. Will be possible.

FIG. 14 is a flowchart for explaining an example of processing for inputting information on the size of a projected image and a use environment and calculating a required light output value. When this flowchart is started, the following steps are executed.

Step S30: The CPU 10a sets the HDD
By reading out a predetermined HTML document stored in 10d and transmitting it via the I / F 10f, for example, the screen 80 shown in FIG. 9 is displayed on the display device of the client that has accessed.

Step S31: The CPU 10a obtains use environment conditions transmitted from a predetermined client via the network 11.

Step S32: As in the case of step S11, the CPU 10a sets information on the projection image,
That is, at least one of the projection image size, the projection image width, and the projection image height is obtained.

Step S33: The CPU 10a acquires the screen ratio in the same manner as in step S11. Step S34: The CPU 10a calculates a projectable image size, a projected image width, and a projected image height from the information on the projected image acquired in step S32.

Step S35: The CPU 10a acquires the data corresponding to the environmental conditions acquired in steps S31 to S34, that is, the projectable image size under predetermined conditions, for example, from the table shown in FIG.

Step S36: The CPU 10a selects a corresponding expression from the expressions (7) to (9), and
After changing the constant in accordance with the data obtained in 35, the light output value is calculated by substituting the data obtained in steps S31 to S34.

Step S37: The CPU 10a searches the table shown in FIG. 7 for a projector having the light output value calculated in step S36.

Step S38: The CPU 10a generates an HTML document including the calculation result and the search result, transmits the generated HTML document to the requesting client, and displays, for example, a screen 90 shown in FIG.

According to the above flowchart, the necessary light output value of the projector device is calculated from the usage environment and the projected image size, and a list of the projector devices having the light output value and the detailed specifications are transmitted to the client. Can be provided.

In the above embodiment, the server 10
The necessary programs are installed in advance and calculations are performed in response to requests from the clients 12 and 13. However, the programs themselves are transmitted via the network 11 and installed in the clients 12 and 13 and actually installed there. The calculation may be performed. Further, it is also possible to distribute a recording medium such as a CD-ROM in which such a program is recorded, and install and use the recording medium in the clients 12 and 13.

In the above embodiment, the server 10 calculates each time in response to a request from the client 12 or 13 and returns the result. However, all the calculations are performed in advance and the data table is stored. Create and Client 1
When there is a request from the tables 2 and 13, the corresponding result may be searched from this table.

Next, a second embodiment of the present invention will be described. FIG. 15 is a diagram illustrating a configuration example of the second embodiment of the present invention. In this figure, a measure 1 of the present invention has a structure in which a measuring unit 2 can be wound and housed. That is, the measuring unit 2 is stored inside the measure 1 in a wound state, and the measuring unit 2 can be extended as needed. When the measuring unit 2 is extended, a built-in spring (not shown) is deformed, so that the measuring unit 2 is automatically wound and stored inside the measure 1 by its restoring force.

The measuring section 2 is formed of a long plate-like member such as a metal plate or a plastic plate, and is spirally wound and stored inside the measure 1. Also,
At its tip, a locking portion 3 is formed. By locking this portion to the object to be measured, the measurement is facilitated. Prevent getting caught.

FIG. 16 is a diagram showing an example of a scale formed on the surface of the measuring section 2. In the example of this figure, the length (c
m), a scale 2b indicating the relationship between the light output value of the projector device having a screen ratio of 4: 3 and the height (Height) of the projectable screen, and a screen width (Width). 2) is printed on one surface of the long plate member.

The scales 2b and 2c are determined by the above-described equations (1) to (2).
It is formed based on equation (6). In this example, the scale 2b indicates the relationship between the height H of the projectable image and the light output value in a general office, and the area H is divided by the presence or absence of hatching. Indicated by For example, as shown in FIG. 16B, in a projector device of 400 ANSI lumen,
The height H of the projectable image ranges from about 56 cm to about 65 cm with hatching. Also, 500AN
In the SI lumen projector device, the range is from about 65 cm to about 73 cm without hatching. Further, the “inch” displayed at various places on the scale 2b indicates the screen height H of the number of inches (indicating the length of the diagonal line of the screen). For example, as shown in FIG. 16A, the height H of a 5-inch screen is about 8 cm.

On the other hand, the scale 2c indicates the relationship between the width W of the projectable image and the light output value in a general office, and the width W of the projectable image is determined by the area divided by the presence or absence of hatching. It is shown. For example, FIG.
As shown in FIG. 6 (B), in the projector device of 300 ANSI lumen, the height H of the projectable image is in a range of about 61 cm to about 75 cm without hatching. In addition, “inc
“h” indicates the width W of the image in inches.
For example, as shown in FIG. 16A, the width W of the 5-inch image is about 10 cm.

By using such a measure 1, it is possible to know a maximum image size (hereinafter, referred to as a projectable image size) that can be visually recognized by a predetermined projector device in a general office. Also, conversely,
The required light output value of the projector device can be known from the projectable image size.

In the example shown in FIG. 16, only the scale corresponding to the case where the screen ratio is 4: 3 and the brightness of the environment where the projector device is used is 750 lux is printed. Alternatively, scales corresponding to other combinations may be printed. In addition, a plurality of scales having different combinations may be printed on the same surface, or separately printed on the front and back surfaces of the plate-shaped member. According to such specifications, it is possible to cope with use under different environments.

Further, in the present embodiment, the scales 2a to 2c are printed on a flexible long plate-like member, and the scales 2a to 2c are wound up and stored in the main body of the measure 1. The configuration is not limited, and for example, a configuration including only a long plate-shaped member may be employed.

Lastly, the above processing functions can be realized by a computer. In that case, the server 10
The processing contents of the functions that should be possessed are described in a program recorded on a computer-readable recording medium, and the above processing is realized by the computer by executing this program on the computer. Computer-readable recording media include magnetic recording devices and semiconductor memories. For distribution to the market, C
The program is stored and distributed in a portable recording medium such as a D-ROM (Compact Disk Read Only Memory) or a floppy (registered trademark) disk, or stored in a storage device of a computer connected via a network. It can also be transferred to other computers over a network. When executing the program on a computer, store the program in a hard disk device or the like in the computer,
Load into main memory and execute.

[0110]

As described above, according to the present invention, an image size calculation device that receives an input of a light output value of a light projection display device and calculates the size of an image that can be projected is provided with the light projection display device of the object. A light output value input unit that receives an input of a light output value; an image size calculation unit that calculates a size of an image that can be projected based on the light output value in a predetermined environment; and an image size calculated by the image size calculation unit. Since the image size display means to be displayed on the device is provided, it is possible to easily obtain the size of the image that can be projected by the predetermined light projection display device in a predetermined environment.

Further, the image size input to the light output value calculating device which receives the input of the image size and calculates the light output value which the light projection display device should have in order to project the image of that size is received. An input unit, a light output value calculating unit that calculates a light output value necessary for projecting an image of a size by the light projection device under a predetermined environment, and a light output value calculated by the light output value calculating unit. Since the light output value display means for displaying on the device is provided, it is possible to easily obtain the light output value required to project a predetermined image size under a predetermined environment.

Further, in a measuring device having a predetermined scale printed on a long plate-like member, the first scale indicating the light output value of the light projection display device and the light output value can be projected in a predetermined environment. Since the second scale indicating the image size is provided, the relationship between the light output value of the light projection display device and the size of the projected image can be easily known.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a relationship between a projector device and a projected image.

FIG. 2 is a diagram illustrating a light output value of a projector device.

FIG. 3 is a diagram illustrating a configuration example of a first embodiment of the present invention.

FIG. 4 is a diagram showing a detailed configuration example of a server shown in FIG. 3;

FIG. 5 is an example of an input screen displayed on the client side when calculating a projectable image size.

FIG. 6 is an example of a table showing a relationship between a use environment and a projectable image size.

FIG. 7 is an example of a table showing a model number of a projector device, a light output value, a distance to a screen, and links for detailed information.

8 is an example of a display screen of a result calculated based on information input on the screen shown in FIG. 7;

FIG. 9 is an example of an input screen displayed on the client side when calculating a light output value.

FIG. 10 is an example of a display screen of a result calculated based on information input on the screen shown in FIG. 9;

FIG. 11 is an example of an input screen displayed on the client side when calculating a light output value.

12 is an example of a display screen of a result calculated based on information input on the screen shown in FIG. 11;

FIG. 13 is a flowchart illustrating an example of a process of calculating a projectable image size from a light output value and environmental conditions.

FIG. 14 is a flowchart illustrating an example of a process for calculating a light output value from a projected image size and environmental conditions.

FIG. 15 is a diagram illustrating a configuration example of a second embodiment of the present invention.

FIG. 16 is a diagram showing an example of a scale formed on the surface of the measuring section shown in FIG.

[Explanation of symbols]

1 ... Measure, 2 ... Measurement unit, 3 ... Locking unit, 10 ...
... Server, 10a ... CPU, 10b ... ROM, 10
c RAM, 10d HDD, 10e GC, 1
0f ... I / F, 10g ... Bus, 10h ... Display device, 10i ... Input device, 11 ... Network, 1
2,13 …… Client

Claims (26)

[Claims] 1. An image size calculating device for receiving an input of a light output value of a light projection display device and calculating a size of an image that can be projected, and receiving an input of a light output value of a target light projection display device. Light output value input means, image size calculation means for calculating the size of an image that can be projected based on the light output value in a predetermined environment, and an image for displaying on the display device the image size calculated by the image size calculation means An image size calculation device, comprising: size display means. 2. The image processing apparatus according to claim 1, further comprising: an illuminance value-related information input unit configured to input information related to an illuminance value of the predetermined environment, wherein the image size calculation unit includes an illuminance value input from the illuminance value-related information input unit. 2. An image size that can be projected by the light output value under the predetermined environment is calculated from information related to the light output value and the light output value input from the light output value input unit. Image size calculation device. 3. An image ratio input unit for inputting a ratio between a vertical length and a horizontal length of an image, wherein the image size calculating unit includes: a light output value input from the light output value input unit; The image size calculation device according to claim 1, wherein an image size that can be projected by the light output value under the predetermined environment is calculated from an image ratio input from the image ratio input unit. 4. A storage means for storing the type of light projection display device and its light output value, and a light projection device group having a light output value equal to or more than the light output value input to said light output value input means. The image size calculation device according to claim 1, further comprising: a search unit that searches from the storage unit; and a search result display unit that displays a search result obtained by the search unit. 5. An image size calculation method for receiving a light output value of a light projection display device and calculating a size of an image that can be projected, wherein the light output value of a target light projection display device is received. A light output value inputting step; an image size calculating step of calculating a size of an image that can be projected based on the light output value under a predetermined environment; and an image for displaying the image size calculated by the image size calculating step on a display device. An image size calculation method, comprising: a size display step. 6. An illuminance value-related information input step of inputting information related to an illuminance value of the predetermined environment, wherein the image size calculation step includes an illuminance value input from the illuminance value-related information input step. 6. An image size that can be projected by the light output value under the predetermined environment is calculated from information related to the light output value and the light output value input from the light output value input step.
The described image size calculation method. 7. An image ratio inputting step of inputting a ratio between a vertical length and a horizontal length of an image, wherein the image size calculating step includes: a light output value input from the light output value input step; 6. The image size calculation method according to claim 5, wherein an image size that can be projected based on the light output value under the predetermined environment is calculated from an image ratio input from the image ratio input step. 8. A storage step for storing the type of light projection display device and its light output value, and a light projection device group having a light output value equal to or more than the light output value input in the light output value input step. The image size calculation method according to claim 5, further comprising: a search step of searching from the storage step; and a search result display step of displaying a search result obtained by the search step. 9. A computer-readable recording medium having recorded thereon a program for causing a computer to execute a process of calculating the size of an image that can be projected by receiving an input of an optical output value of the optical projection display device, comprising: A light output value input unit that receives an input of a light output value of a target light projection display device; an image size calculation unit that calculates a size of an image that can be projected based on the light output value in a predetermined environment; And a computer-readable recording medium storing a program functioning as image size display means for displaying on the display device the image size calculated by the computer. 10. An illuminance value-related information input unit for inputting information related to an illuminance value of the predetermined environment, wherein the image size calculation unit includes an illuminance value input from the illuminance value-related information input unit. 10. An image size that can be projected by the light output value under the predetermined environment is calculated from information related to the light output value and the light output value input from the light output value input unit. Recording medium. 11. An image ratio input unit for inputting a ratio between a vertical length and a horizontal length of an image, wherein the image size calculating unit includes: a light output value input from the light output value input unit; 10. The recording medium according to claim 9, wherein an image size that can be projected by the light output value under the predetermined environment is calculated from an image ratio input from an image ratio input unit. 12. A storage means for storing the type of light projection display device and its light output value, and a light projection device group having a light output value equal to or more than the light output value input to said light output value input means. The recording medium according to claim 9, further comprising: a search unit that searches from the storage unit; and a search result display unit that displays a search result obtained by the search unit. 13. An optical output value calculating device for receiving an input of an image size and calculating an optical output value to be provided by a light projection display device for projecting an image of the size, wherein the input device receives an input of the image size. Image size input means, light output value calculation means for calculating a light output value necessary for projecting an image of the size by a light projection device under a predetermined environment, and light calculated by the light output value calculation means An optical output value calculating device, comprising: an optical output value display means for displaying an output value on a display device. 14. An illuminance value-related information input unit for inputting information related to an illuminance value of the predetermined environment, wherein the light output value calculation unit includes an illuminance input from the illuminance value-related information input unit. Calculating a light output value necessary for projecting an image of the size by the light projection device under the predetermined environment from information related to a value and an image size input from the image size input unit. The optical output value calculation device according to claim 13, wherein: 15. An image ratio inputting means for inputting a ratio between a vertical length and a horizontal length of an image, wherein the light output value calculating means comprises: an image size input from the image size inputting means; 2. A light output value required for projecting an image of the size by the light projection display device under the predetermined environment from the ratio of the image input from the ratio input means.
3. The optical output value calculation device according to 3. 16. A storage means for storing the type of light projection display device and its light output value, and a light projection device group having a light output value equal to or greater than the light output value calculated by said light output value calculation means, 14. The optical output value calculation device according to claim 13, further comprising: a search unit that searches from the storage unit; and a search result display unit that displays a search result obtained by the search unit. 17. An optical output value calculating method for receiving an input of an image size and calculating an optical output value that the light projection display device should have to project an image of the size, wherein the input of the image size is received. An image size input step; a light output value calculation step of calculating a light output value necessary for projecting an image of the size by a light projection device under a predetermined environment; and light calculated by the light output value calculation step. A light output value display step of displaying an output value on a display device. 18. An illuminance value-related information inputting step of inputting information related to an illuminance value of the predetermined environment, wherein the light output value calculating step includes an illuminance input from the illuminance value-related information inputting step. Calculating a light output value necessary for projecting an image of the size by the light projection device under the predetermined environment from information related to the value and the image size input from the image size input step. The light output value calculation method according to claim 17, wherein: 19. An image ratio inputting step of inputting a ratio between a vertical length and a horizontal length of an image, wherein the light output value calculating step includes the steps of: inputting an image size input from the image size inputting step; 18. A light output value required for projecting an image of the size by the light projection display device under the predetermined environment from the ratio of the image input from the ratio input step. Light output value calculation method. 20. A storage step in which the type of light projection display device and its light output value are stored, and a light projection device group having a light output value equal to or more than the light output value calculated in the light output value calculation step, The optical output value calculation method according to claim 17, further comprising: a search step of searching from the storage step; and a search result display step of displaying a search result obtained by the search step. 21. A computer-readable recording medium which causes a computer to execute a process of receiving an input of an image size and calculating an optical output value that the light projection display device should have to project an image of the size. An image size input unit that receives an image size input from a computer; a light output value calculation unit that calculates a light output value required to project an image of the size by a light projection device under a predetermined environment; A computer-readable recording medium on which is recorded a program functioning as an optical output value display means for displaying an optical output value calculated by the value calculation means on a display device. 22. An illuminance value-related information input unit for inputting information related to an illuminance value of the predetermined environment, wherein the light output value calculating unit includes an illuminance input from the illuminance value-related information input unit. Calculating a light output value necessary for projecting an image of the size by the light projection device under the predetermined environment from information related to a value and an image size input from the image size input unit. 22. The recording medium according to claim 21, wherein: 23. An image ratio inputting means for inputting a ratio between a vertical length and a horizontal length of an image, wherein the light output value calculating means comprises: an image size input from the image size inputting means; 3. A light output value required to project an image of the size by the light projection display device under the predetermined environment from the ratio of the image input from the ratio input means.
2. The recording medium according to 1. 24. A storage means for storing the type of light projection display device and its light output value, and a light projection device group having a light output value equal to or greater than the light output value calculated by said light output value calculation means, 22. The recording medium according to claim 21, further comprising: a search unit configured to search from the storage unit; and a search result display unit configured to display a search result obtained by the search unit. 25. A measuring device comprising a predetermined scale printed on a long plate-like member, comprising: a first scale indicating a light output value of a light projection display device; And a second scale indicating an image size that can be projected in the measurement device. 26. A second scale indicating the image size,
26. The measuring device according to claim 25, wherein the scale is a scale indicating a vertical length and a horizontal length of the image.