JP6541084B2 - Lighting evaluation apparatus and lighting evaluation method - Google Patents

Description

  The present invention relates to an illumination evaluation apparatus and an illumination evaluation method for evaluating illumination light, and a program for executing the illumination evaluation method.

  Conventionally, when the observer performs visual work (reading, etc.) for a certain period of time in a lighting environment, research has been made on what kind of influence the illumination light has on the observer, but appropriate evaluation of the illumination light There is no known method.

  Until now, the technique which inspects how an observer's thing looks under illumination environment is known (patent documents 1 and 2). The techniques described in Patent Literatures 1 and 2 evaluate the appearance of the observer's object in the illumination environment by the performance of the observer's visual acuity, but do not evaluate the illumination light.

Unexamined-Japanese-Patent No. 2001-17392 JP, 2001-87225, A

  In recent years, it has been considered to evaluate illumination light by evaluating the burden of the eyes under the illumination environment of the observer. In this case, the illumination light is evaluated by measuring the degree of decrease in visual function of the eye that has become tired.

  However, since the evaluation method of the illumination light until now is based on a viewer's subjective evaluation, it can not be said that the illumination light is evaluated appropriately. That is, since the observer's subjective evaluation greatly affects the evaluation result by the observer's psychological aspect and physical condition, the evaluation method with the past can not obtain a quantitative and reproducible evaluation result. Moreover, evaluation can only be performed after eye fatigue.

  The present invention has been made to solve such a problem, and an illumination evaluation apparatus and an illumination evaluation method capable of obtaining a quantitative and reproducible evaluation result about illumination light before eye fatigue. And so on.

  In order to achieve the above object, one aspect of the illumination evaluation apparatus according to the present invention is a viewpoint of an observer who performs a visual operation to visually recognize an object to be visually identified arranged in an illumination area irradiated with illumination light from an illumination light source. A gaze distance measuring unit which measures a gaze distance which is a linear distance between a position and an arbitrary position on the visible object, and an average of the gaze distances measured by the gaze distance measuring unit at a viewing operation time for performing the viewing operation An average eye gaze distance calculating unit that calculates an average eye gaze distance that is a value; a storage unit that stores an evaluation criterion that an eye strain on the observer increases as the average eye gaze distance decreases; And an evaluation unit that evaluates the superiority or inferiority of the illumination light from the average gaze distance calculated by the average gaze distance calculation unit based on a standard.

  In one aspect of the illumination evaluation method according to the present invention, the viewpoint position of the observer performing the visual operation to visually recognize the visual object disposed in the illumination area to which the illumination light from the illumination light source is irradiated and the visual object An eye gaze distance measuring step of measuring an eye gaze distance which is a linear distance from an arbitrary position on the eye, and an average eye gaze distance calculating an average eye gaze distance which is an average value of the eye gaze distances measured at a visual operation time for performing the visual operation The calculation step includes an evaluation step of evaluating superiority or inferiority of the illumination light from the average gaze distance based on an evaluation criterion that the burden on the eyes of the observer is larger as the average gaze distance is shorter.

  The present invention can be realized not only as the above-described lighting evaluation apparatus and lighting evaluation method, but also as a program that causes a computer to execute the lighting evaluation method or a computer-readable recording medium storing the program. It can also be done.

  With respect to the illumination light, quantitative and reproducible evaluation results can be obtained before the eyes are fatigued.

FIG. 1: is a schematic diagram which shows typically the structure of the illumination evaluation system which concerns on embodiment. FIG. 2 is a block diagram showing a basic configuration of the lighting evaluation device according to the embodiment. FIG. 3 is a diagram for explaining an example of a method of measuring the gaze distance in the lighting evaluation device according to the embodiment. FIG. 4 is a diagram showing the relationship between the illuminance of the reading surface (illumination area) and the reading distance (gaze distance). FIG. 5 is a diagram showing the relationship between the reading distance (gaze distance) and the amount of change in the degree of refraction. FIG. 6 is a flowchart of the lighting evaluation method according to the embodiment. FIG. 7 is a block diagram showing a basic configuration of the illumination evaluation apparatus according to the first modification. FIG. 8 is a block diagram showing a basic configuration of the illumination evaluation apparatus according to the second modification.

  Hereinafter, embodiments of the present invention will be described. Each of the embodiments described below shows a preferable specific example of the present invention. Accordingly, the numerical values, components, the arrangement positions and connection forms of the components, the order of steps and steps, and the like described in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims indicating the highest concept of the present invention are described as optional components.

  Further, each drawing is a schematic view, and is not necessarily illustrated exactly. In the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions will be omitted or simplified.

Embodiment
First, configurations of a lighting evaluation system 1 and a lighting evaluation apparatus 100 according to the embodiment will be described using FIGS. 1 and 2. FIG. 1: is a schematic diagram which shows typically the structure of the illumination evaluation system which concerns on embodiment. FIG. 2 is a block diagram showing a basic configuration of the lighting evaluation device according to the embodiment.

[Lighting evaluation system, Lighting evaluation system]
As shown in FIG. 1, the illumination evaluation system 1 is configured to include an illumination evaluation apparatus 100 and an illumination light source 200, and evaluates illumination light emitted from the illumination light source 200. In the present embodiment, the illumination evaluation apparatus 100 evaluates the superiority of the illumination light from the illumination light source 200 based on the burden of the eyes of the observer P who performs visual work under the illumination environment of the illumination light source 200.

  As shown in FIG. 1, the observer P looks at the illumination area (irradiation area) 310 illuminated by the illumination light source 200 from the viewpoint position S (the position of the eye of the observer P). The viewpoint position S may be set as the center position of the eyes, the position of the dominant eye, or the like, or any one of the left and right eyes may be set arbitrarily. As an example, the observer P shown in FIG. 1 is reading as visual work. Specifically, in a state where the observer P sits in a chair and the head is not fixed by a chin rest or the like, the viewer P visually recognizes the book placed on the desk 300 as an observation target (visual target) and reads the contents of the book It is. That is, by reading the book illuminated by the illumination light source 200, the observer P sees the illumination area 310 (illuminated surface) for a fixed time (visual operation time).

  The illumination light source 200 emits illumination light L toward the illumination area 310. That is, the area to which the illumination light L from the illumination light source 200 is irradiated is the illumination area 310. The illumination light source 200 may have a light control function capable of changing the light output, a toning function capable of changing the color temperature or the light color, and a light distribution control function capable of changing the light distribution angle. The illumination light source 200 is, for example, a desk light that illuminates the desk 300.

  As shown in FIG. 2, the illumination evaluation apparatus 100 includes a gaze distance measurement unit 10, a processing unit 20, and a storage unit 30. The illumination evaluation apparatus 100 according to the present embodiment further includes an illumination condition acquisition unit 40 and a visual operation time input unit 50.

  The processing unit 20 is a control unit having various control functions, and has an average gaze distance calculation unit 21 and an evaluation unit 22 in the present embodiment.

  The lighting evaluation device 100 is configured of, for example, an information processing device 110 such as a notebook computer and the three-dimensional distance sensor 120, but the present invention is not limited to this. The three-dimensional distance sensor 120 includes, for example, an infrared projector and an infrared camera.

[Gaze distance measurement unit]
The sight line distance measuring unit 10 is a sight line distance which is a linear distance between the viewpoint position S of the observer P who performs the visual operation for visually recognizing the visual object disposed in the illumination area 310 and an arbitrary position B on the visual object Visual distance) X is measured.

  Here, an example of a method of measuring the sight line distance X will be described with reference to FIG. FIG. 3 is a diagram for explaining an example of a method of measuring the gaze distance X in the illumination evaluation device 100 according to the embodiment.

  As shown in FIG. 3, in the three-dimensional space coordinates, the position O of the infrared camera of the three-dimensional distance sensor 120 is set as the origin (0, 0, 0), and the coordinates of the viewpoint position S of the observer P are (Xs, Ys, Let Zs), and let (W, H, D) be the coordinates of an arbitrary position B of the book which is the visual object (the end of the line of sight of the observer P). That is, the horizontal distance from an arbitrary position B of the book to the position O of the infrared camera of the three-dimensional distance sensor 120 is W, the depth is D, and the height is H.

  In this case, the line-of-sight distance X can be obtained by the following equation (1).

  The three-dimensional distance sensor 120 can measure the measurement distance Y which is a linear distance between the own device (the three-dimensional distance sensor 120) and the viewpoint S of the observer P by recognizing the eyes of the observer P. That is, the three-dimensional distance sensor 120 can calculate three-dimensional space coordinates (Xs, Ys, Zs) of the viewpoint position S of the observer P.

  Thus, using the known depth D and height H values and the coordinates (Xs, Ys, Zs) of the viewpoint position S calculated by the three-dimensional distance sensor 120, the gaze distance X is calculated from the above equation (1). It can be calculated. As shown in FIGS. 1 and 3, in the present embodiment, the three-dimensional distance sensor 120 is disposed in front of the viewpoint position S, so W = 0.

[Average eye gaze distance calculation unit]
The average gaze distance calculation unit 21 calculates an average gaze distance Xa that is an average value of the gaze distance X measured by the gaze distance measurement unit 10 at a visual operation time at which visual operation is performed. In the present embodiment, the average visual axis distance calculation unit 21 calculates the average visual axis distance Xa using the time input by the visual operation time input unit 50 as the visual operation time. Specifically, the average gaze distance Xa can be calculated as an average value of a plurality of gaze distances X measured within the viewing operation time from the first time to the second time. For example, it is possible to calculate the average gaze distance Xa for 60 minutes by calculating the gaze distance X of the observer P every one second with the visual operation time set to 60 minutes.

  At this time, the observer P may temporarily interrupt the visual operation within the visual operation time. In this case, the sight line distance X may be largely deviated from the original value. For this reason, when calculating the average gaze distance Xa, the gaze distance X exceeding the set range may be excluded. That is, the upper limit value and the lower limit value are set in advance, and when the calculated sight line distance X exceeds the upper limit value or falls below the lower limit value, it is out of the set range from the population when calculating the average sight line distance Xa. The line-of-sight distance X may be excluded.

  The processing unit 20 stores the calculated average gaze distance Xa in the storage unit 30 in association with the illumination condition acquired by the illumination condition acquisition unit 40. Further, the visual operation time when calculating the average visual line distance Xa does not have to be input by the visual operation time input unit 50, and the visual operation time when calculating the average visual line distance Xa is a predetermined predetermined value. It may be (a set value).

[Evaluation department]
The evaluation unit 22 uses illumination light from the average gaze distance Xa calculated by the average gaze distance calculation unit 21 based on the evaluation criteria stored in the storage unit 30 that the burden on the eyes of the observer is larger as the average gaze distance is shorter. Evaluate L's superiority or inferiority. For example, it is evaluated that the burden on the eyes is large and the illumination environment is inferior as the average gaze distance is short, and the burden on the eyes is small and the illumination environment is excellent as the average gaze distance is long. The determination that the average gaze distance is short or long may be made with respect to a predetermined reference value (for example, 30 cm) or may be made in comparison with the average gaze distance of other visual operations.

  In the present embodiment, the evaluation unit 22 evaluates superiority or inferiority of the illumination condition as superiority or inferiority of the illumination light L. Specifically, the evaluation unit 22 evaluates the superiority or inferiority of the illumination condition associated with the average gaze distance Xa. In this case, the evaluation unit 22 evaluates the superiority or inferiority of the illumination condition of the illumination light L acquired by the illumination condition acquisition unit 40, but acquires the illumination condition from the illumination condition acquisition unit 40 when the illumination condition is predetermined. do not have to.

  The illumination condition of the illumination light L is, for example, the illuminance, color temperature, color rendering property, wavelength, illuminance gradient, degree of flicker (frequency of flicker), and three primary colors (R, G, B) of light in the illumination area 310. At least one of

  In addition, although the process part 20 in this Embodiment performs the process for performing the average visual line distance calculation part 21 and the evaluation part 22, it does not restrict to this process, For example, the illumination evaluation apparatus 100 performs otherwise. Operations necessary for processing may be performed and information may be temporarily stored.

[Storage unit]
The storage unit 30 stores an evaluation criterion that the burden on the observer's eyes is greater as the average gaze distance is shorter. The storage unit 30 further associates and stores the illumination condition acquired by the illumination condition acquisition unit 40 and the average gaze distance Xa calculated by the average gaze distance calculation unit 21.

  In addition, the storage unit 30 stores the viewing distance X measured by the viewing distance measurement unit 10, stores the average viewing distance Xa calculated by the average viewing distance calculation unit 21, and the illumination light evaluated by the evaluation unit 22. The evaluation result of L may be stored, the illumination condition input by the user from the illumination condition acquisition unit 40 may be stored, or the visual operation time input by the user from the visual operation time input unit 50 may be stored.

  Furthermore, the storage unit 30 may store other information, or may store a series of programs and the like necessary for the processing performed by the lighting evaluation device 100.

  The storage unit 30 is a display as a logical structure, and may actually be composed of the same hardware or may be composed of divided separate hardware. The storage unit 30 is configured of, for example, a main storage device formed of a volatile storage device such as SRAM or DRAM, or an auxiliary storage device formed of a non-volatile storage device such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory. Be done.

[Lighting condition acquisition unit]
The illumination condition acquisition unit 40 acquires the illumination condition of the illumination light L in the illumination area 310. The acquired illumination conditions are input to the processing unit 20. In the present embodiment, the illumination condition acquisition unit 40 is an input unit that inputs illumination conditions according to the user's operation, and is, for example, a user interface such as a keyboard, a mouse, and a touch panel.

  In this case, the illumination light source 200 may have a function of setting the illumination condition input to the illumination condition acquisition unit 40 by the operation of the user and irradiating the illumination light L of the set illumination condition.

  In addition, the illumination condition acquisition unit 40 may automatically acquire a predetermined illumination condition set in advance without the user inputting the illumination condition without being input by the user. In addition, when the illumination condition is predetermined, the illumination condition acquisition unit 40 may not be provided.

[Viewing time input unit]
The visual operation time input unit 50 inputs a time (visual operation time) in which the observer P performs a visual operation. The input visual operation time is input to the average gaze distance calculation unit 21 and is used to calculate the average gaze distance Xa. The visual operation time input unit 50 is an input unit for inputting a visual operation time in advance according to a user operation, and is a user interface such as a keyboard, a mouse, and a touch panel, for example.

  When the visual operation time is a predetermined set value, the visual operation time input unit 50 may not be provided.

[Evaluation criteria]
As described above, in the present embodiment, as the evaluation criteria for evaluating the superiority or inferiority of the illumination light L, a criterion is used that the burden on the eyes of the observer is larger as the average gaze distance is shorter. It is due to the result of the following experiment conducted by

  The inventor conducted an experiment on the relationship between the illumination condition of the illumination light and the burden on the eyes. In this experiment, I read as a visual task. Moreover, "illuminance" was used as an example of the illumination condition of illumination light.

  Specifically, as shown in FIG. 1, the subject sitting in a chair reads a book placed on the illumination area 310 (reading surface) on the desk 300 under a constant illumination illumination environment. In this case, each subject measures the degree of refraction of the eye before visual work (before reading) and then performs 60 minutes of visual work (reading), and after visual work (after reading) The degree of refraction was measured. That is, the amount of change in the degree of refraction before and after the visual operation for a fixed time was determined. During the visual operation, the eye gaze distance X (reading distance) was measured at an interval of 1 second to calculate the average eye gaze distance Xa.

  This was performed for each of the cases where the illuminance of the illumination light L was 200 lx, 900 lx, and 1400 lx. That is, an experiment was conducted on three types of illumination light sources 200 (desk lights). In this experiment, the measurement of the gaze distance X was performed by the same method as described above, and the illuminance was measured by a luminometer. In addition, the refractive index of the subject's eyes was measured by an autorefractometer (refractive power measuring device). The number of subjects was 18 and the vision of all subjects was 1.0.

  By this experiment, the results shown in FIG. 4 and FIG. 5 were obtained. FIG. 4 is a diagram showing the relationship between the illuminance of the reading surface (illumination area) and the reading distance (gaze distance), and shows the influence of the illumination environment on the gaze distance. Moreover, FIG. 5 is a figure which shows the relationship between reading distance (gaze distance) and the variation | change_quantity of refractive index, and has shown the relationship between reading distance and the burden of eyes. In FIGS. 4 and 5, the reading distance (gaze distance) indicates an average value (average gaze distance) in 60 minutes.

  As shown in FIG. 4, it can be seen that the visual line distance becomes longer as the illuminance in the illumination area is higher, and conversely, the visual line distance becomes shorter as the illuminance in the illumination area is smaller. That is, it can be seen that the higher the illuminance, the more correct the posture of the observer.

  Also, as shown in FIG. 5, the longer the viewing distance, the smaller the amount of change in the refractive index of the eye before and after reading. Conversely, the shorter the viewing distance, the larger the amount of change in the refractive index of the eye before and after reading. It turns out that it becomes.

  A large change in the refractive index of the eye means that the burden on the eye is large. This point will be described below.

  By adjusting the bulge of the lens to form an image of light coming into the eye from the subject on the retina, the person is able to focus the eye and view the object. The lens is controlled for swelling by the ciliary muscle and the refractive power of the eye is adjusted.

  For example, if the distant object is in focus, the eye relaxes the ciliary muscle and the lens becomes thinner. In this case, even when looking at distant objects, the burden on the eyes is small because the ciliary muscle is relaxed.

  On the other hand, if the object in focus is in focus, the eye becomes tense in the ciliary muscle and the lens thickens. In this case, if you keep looking at a nearby object, the strain on the eye is heavy because the ciliary muscle is tense. Since the ciliary muscle is constantly tensioned while reading nearby objects for a long time by reading, even after finishing reading, the ciliary muscle tension remains unrelaxed and has a high degree of refraction It will be in the state (pseudomyopia). That is, a large change in the degree of refraction before and after reading means that the burden on the eyes is large.

  Therefore, as shown in FIG. 5, the amount of change in the degree of refraction of the eyes before and after reading by the subject increases as the line-of-sight distance decreases, which means that the load on the eyes increases as the line-of-sight distance decreases.

  In the present embodiment, the illumination light (illumination environment) is evaluated using this as an evaluation criterion.

[Lighting evaluation method]
Next, a lighting evaluation method according to the embodiment will be described using FIG. 6 with reference to FIGS. 1 to 3. FIG. 6 is a flowchart of the lighting evaluation method according to the embodiment.

  As shown in FIG. 6, the illumination evaluation method according to the present embodiment includes a gaze distance measurement step S30, an average gaze distance calculation step S40, a storage step S50, and an evaluation step S60. The present embodiment further includes an illumination condition acquisition step S10 and a visual operation time input step S20.

  In the illumination condition acquisition step S10, the illumination condition of the illumination light L in the illumination area 310 is acquired. The acquired illumination conditions are input to the processing unit 20.

  In the visual operation time input step S20, the visual operation time of the observer P is input. The input visual operation time is input to the average gaze distance calculation unit 21.

  In the gaze distance measuring step S30, the viewpoint position S of the observer P who performs the visual operation to visually recognize the visual object disposed in the illumination area 310 to which the illumination light L from the illumination light source 200 is irradiated and the arbitrary position on the visual object A gaze distance X, which is a linear distance from the position B of the The gaze distance X can be measured by the above measurement method. The measured gaze distance X is input to the average gaze distance calculation unit 21.

  In the average eye gaze distance calculating step S40, an average eye gaze distance Xa which is an average value of the eye gaze distance X measured in the visual operation time at which the visual operation is performed is calculated. The average gaze distance Xa can be calculated by the above method.

  In the storage step S50, the acquired illumination condition and the calculated sighted line distance Xa are stored in association with each other.

  In the evaluation step S60, the superiority or inferiority of the illumination light L is evaluated from the average gaze distance Xa based on an evaluation criterion that the burden on the eyes of the observer P is larger as the average gaze distance Xa is shorter. For example, as the superiority or inferiority of the illumination light L, the superiority or inferiority of the illumination condition associated with the average gaze distance Xa is evaluated.

  The evaluation result of the illumination light L (illumination condition) may be displayed on a display unit (not shown) such as a display.

  In addition, the order of each said step is not restricted to the order shown in FIG. 6, You may replace suitably. For example, the illumination condition acquisition step S10 may be performed after the visual operation time input step S20. Also, all the above steps are not necessarily required. For example, the illumination condition acquisition step S10 and the visual operation time input step S20 may be omitted.

[Summary]
As described above, the illumination evaluation system 1 and the illumination evaluation apparatus 100 according to the present embodiment perform the visual operation for visually recognizing the visual object physical property disposed in the illumination area 310 to which the illumination light L from the illumination light source 200 is irradiated. A visual line distance measurement unit 10 which measures a visual line distance X which is a linear distance between the visual point position S of the object and an arbitrary position B on the visual object, and an average of the visual line distance X Stored in storage unit 30 storing average viewing distance calculation unit 21 that calculates average viewing distance Xa, which is a value, and evaluation criteria that the burden on the eyes of the observer increases as the average viewing distance XAa decreases The evaluation unit 22 evaluates superiority or inferiority of the illumination light from the average gaze distance Xa calculated by the average gaze distance calculation unit 21 based on the above evaluation criteria.

  As described above, in the present embodiment, the average gaze distance Xa during visual work for a given time on the illumination area 310 by an arbitrary illumination light source 200 is calculated, and this is used as an evaluation criterion regarding the observer's eye burden in the illumination environment. Based on the average gaze distance Xa, the superiority or inferiority of the illumination light L is evaluated.

  Thereby, about the illumination light L (illumination environment) of the illumination light source 200, before an eye is fatigued, a quantitative and reproducible evaluation result can be obtained. That is, the superiority of the illumination light source 200 can be evaluated quantitatively with high reproducibility.

  In addition, the evaluation result of the illumination light L or the illumination light source 200 can be represented by a score (for example, 50 points, 80 points, 100 points, etc.) or a rank (for example, A to E, the number of stars, etc.) . Also, by reflecting the evaluation result (score, etc.) on the price of the illumination light source 200, the consumer can easily select an illumination light source (lamp, lighting fixture, etc.) suitable for him / her.

  Further, in the present embodiment, the illumination condition acquisition unit 40 for acquiring the illumination condition of the illumination light L in the illumination area 310 is further provided, and the evaluation unit 22 determines that the illumination light L is superior or inferior from the illumination condition acquisition unit 40. The superiority or inferiority of the acquired lighting conditions is evaluated.

  As described above, by providing the illumination condition acquisition unit 40, superiority or inferiority of the acquired illumination condition can be evaluated. This makes it possible to select and evaluate the necessary illumination conditions.

  Furthermore, in the present embodiment, the storage unit 30 associates and stores the illumination condition acquired by the illumination condition acquisition unit 40 and the average gaze distance Xa calculated by the average gaze distance calculation unit 21. Then, the evaluation unit 22 evaluates the superiority or inferiority of the illumination condition associated with the average gaze distance Xa.

  As described above, by associating the illumination condition acquired by the illumination condition acquisition unit 40 with the average gaze distance Xa calculated by the average gaze distance calculation unit 21, it is possible to obtain a more accurate evaluation result of the illumination condition with higher accuracy. it can.

  Further, in the present embodiment, the visual work time input unit 50 for inputting the time to perform visual work is further provided, and the average visual line distance calculation unit 21 performs visual work on the time input by the visual work time input unit 50. The average gaze distance Xa is calculated as time.

  Thus, by providing the visual operation time input unit 50, the evaluation results can be organized for each operation time. This improves the accuracy of the evaluation result.

(Modification 1)
Next, Modified Example 1 will be described with reference to FIG. FIG. 7 is a block diagram showing a basic configuration of the illumination evaluation apparatus according to the first modification.

  An illumination evaluation apparatus 100A according to the present modification has a configuration in which an illumination condition measurement unit 60 for measuring an illumination condition is further added to the illumination evaluation apparatus 100 according to the above-described embodiment.

  The illumination condition measurement unit 60 measures, for example, the illumination condition in the illumination area 310 illuminated by the illumination light source 200. Specifically, the illumination condition measurement unit 60 measures illumination conditions such as illuminance, color temperature, color rendering property, wavelength, illuminance gradient, degree of flicker (frequency of flicker), or three primary colors of light in the illumination area 310. The illumination condition is input to the illumination condition acquisition unit 40.

  That is, the illumination condition acquisition unit 40 acquires the illumination condition from the illumination condition measurement unit 60, and inputs the illumination condition to the processing unit 20. The illumination condition measurement unit 60 includes various measuring instruments, sensors, and the like, and measures illumination conditions at a plurality of locations on the irradiation surface 12.

  As described above, the illumination condition acquisition unit 40 is not limited to the configuration in which the illumination condition is acquired by the user's operation as in the above embodiment, and the illumination condition may be acquired directly from various measuring instruments as electric signals. It may be configured.

  As described above, according to the present modification, by providing the illumination condition measurement unit 60, the illumination condition acquisition unit 40 can automatically input the illumination condition measured by the illumination condition measurement unit 60 to the processing unit 20. . As a result, the input accuracy of the illumination condition is improved, and the evaluation of the illumination light L can be simplified.

(Modification 2)
Next, Modification 2 will be described using FIG. FIG. 8 is a block diagram showing a basic configuration of the illumination evaluation apparatus according to the second modification.

  An illumination evaluation apparatus 100B according to the present modification has a configuration in which an observer information input unit 70 for inputting observer information on the observer P is added to the illumination evaluation apparatus 100 according to the above-described embodiment. The observer information is, for example, the age, sex, visual acuity, presence or absence of glasses, an identifier, etc. of the observer P. The observer information input unit 70 is a user interface such as a keyboard, a mouse, and a touch panel, for example.

  In the present modification, the storage unit 30 stores the observer information input by the observer information input unit 70 in association with the average gaze distance Xa calculated by the average gaze distance calculation unit 21.

  As described above, according to the present modification, by providing the observer information input unit 70, evaluation results can be organized for each observer information. This improves the accuracy of the evaluation result.

(Other modifications etc.)
The illumination evaluation system, the illumination evaluation device, the illumination evaluation method, and the like according to the present invention have been described above based on the embodiment and the modification, but the present invention is limited to the above embodiment and the modification is not.

  For example, in the above embodiment and modification, the illumination area 310 is a horizontal plane, but the illumination area 310 is not limited to a horizontal plane, and may be a vertical plane. For example, the observer P may visually recognize the character information on the surface (the illumination area 310) of the vertical signboard. In this case, the illumination light source 200 is installed obliquely upward in front of the illumination area (illumination plane) 310, which is a vertical plane, and illuminates the illumination light L toward the illumination area 310. Then, for example, the observer P stands up and looks at the illumination area 310 illuminated by the illumination light source 200 from the viewpoint S in a state where the head is not fixed.

  Further, in the above embodiment and modification, the illumination evaluation apparatus is a display unit (not shown) for displaying the evaluation result of the illumination light L (illumination condition), or an evaluation result of the illumination light L (illumination condition) A speaker (not shown) may be provided for voice output.

  Further, in the above-described embodiment and modification, the illumination evaluation apparatus may evaluate the illumination light (illumination light source) comprehensively in combination with the burden on the eyes of the observer P in consideration of the power consumption and the like of the illumination light source. Good.

  In addition, the embodiment can be obtained by applying various modifications that those skilled in the art may think to the above embodiment and modifications, or components and functions in the above embodiment can be arbitrarily combined without departing from the scope of the present invention. The embodiments realized by the present invention are also included in the present invention.

  In the above description, each component in the processing unit 20 may be a circuit. These circuits may constitute one circuit as a whole or may be separate circuits. Each of these circuits may be a general-purpose circuit or a dedicated circuit.

  Moreover, the computer may execute the processing described as the operation of the lighting evaluation device 100 such as the processing unit 20. For example, a computer executes each process described above by executing a program using hardware resources such as a processor (CPU), a memory, and an input / output circuit. Specifically, each process is executed by the processor acquiring data to be processed from a memory or an input / output circuit and calculating data, or outputting an operation result to a memory or an input / output circuit or the like. .

  Further, a program for executing each of the above-described processes may be recorded on a non-transitory recording medium such as a computer readable CD-ROM. In this case, the computer reads the program from the non-transitory recording medium and executes the program to execute each process. For example, the present invention can be realized as a program that causes a computer to execute the method in the illumination system, or can be realized as a computer-readable recording medium having such a program recorded thereon.

DESCRIPTION OF SYMBOLS 1 illumination evaluation system 10 gaze distance measurement unit 21 average gaze distance calculation unit 22 evaluation unit 30 storage unit 40 illumination condition acquisition unit 50 visual operation time input unit 60 illumination condition measurement unit 70 observer information input unit 100, 100A, 100B illumination evaluation Equipment 200 illumination light 300 desk 310 illumination area

Claims (9)

A visual line distance which is a linear distance between a viewpoint position of an observer performing a visual operation to visually recognize a visual object disposed in an illumination area irradiated with illumination light from an illumination light source and an arbitrary position on the visual object A line-of-sight distance measuring unit that measures
An average gaze distance calculating unit that calculates an average gaze distance which is an average value of the gaze distances measured by the gaze distance measuring unit at a visual operation time at which the visual operation is performed;
A storage unit that stores an evaluation criterion that the burden on the eyes of the observer is greater as the average gaze distance is shorter;
An evaluation unit which evaluates the superiority or inferiority of the illumination light from the average gaze distance calculated by the average gaze distance calculation unit based on the evaluation criteria stored in the storage unit. The illumination condition acquisition unit further acquires an illumination condition of the illumination light in the illumination area,
The lighting evaluation device according to claim 1, wherein the evaluation unit evaluates superiority or inferiority of the illumination condition as superiority or inferiority of the illumination light. The storage unit further associates and stores the illumination condition acquired by the illumination condition acquisition unit and the average gaze distance calculated by the average gaze distance calculation unit.
The illumination evaluation device according to claim 2, wherein the evaluation unit evaluates superiority or inferiority of the illumination condition associated with the average gaze distance. The apparatus further comprises an illumination condition measurement unit that measures the illumination condition,
The illumination evaluation device according to any one of claims 1 to 3, wherein the illumination condition acquisition unit acquires the illumination condition from the illumination condition measurement unit. The illumination condition is at least one of illumination, color temperature, color rendering, wavelength, illumination gradient, flicker degree, and three primary colors of light in the illumination area. Lighting evaluation device as described. It further comprises a visual operation time input unit for inputting a time for performing the visual operation,
The illumination evaluation device according to any one of claims 1 to 5, wherein the average gaze distance calculation unit calculates the average gaze distance using the time input by the visual operation time input unit as the visual operation time. It further comprises an observer information input unit for inputting observer information on the observer,
The illumination evaluation apparatus according to any one of claims 1 to 6, wherein the storage unit stores observer information input by the observer information input unit in association with the average gaze distance. A visual line distance which is a linear distance between a viewpoint position of an observer performing a visual operation to visually recognize a visual object disposed in an illumination area irradiated with illumination light from an illumination light source and an arbitrary position on the visual object A gaze distance measuring step to measure,
An average eye gaze distance calculating step of calculating an average eye gaze distance which is an average value of the eye gaze distances measured at a visual operation time at which the visual operation is performed;
An evaluation step of evaluating the superiority or inferiority of the illumination light from the average gaze distance based on an evaluation criterion that the burden on the eyes of the observer is larger as the average gaze distance is shorter.   The program for making a computer perform the lighting evaluation method of Claim 8.

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