JP3245221B2 - Standard light source unit for color evaluation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to
The purpose of the present invention is to provide a standard light source unit for color evaluation so that a viewer can visually recognize the same color and tone in the same manner.

[0002]

2. Description of the Related Art Conventionally, JI has been used as a method for comparing the luminosity of surface colors.
The standard is determined by S. This standard stipulates that the ordinary light source D65 is used as the standard light for viewing an object, and a xenon standard white light source lamp similar to the ordinary light source D65 and a color rendering AAA type daylight fluorescent lamp are used.
However, it is not determined at which position and how the common light source D65 is arranged to see an object. Therefore, even when viewing the same thing due to differences in location and time, there are cases where colors and color tones are different, and there is a problem that the criterion for determination becomes ambiguous.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting unit for maintaining a constant lighting environment when a color is visually evaluated using a standard light source. The main purpose of this is to secure a stable lighting environment in order to accurately evaluate the color, gloss, texture, and the like of the interior and exterior materials. It also has a function to check the change of the image of the object due to the difference in the directionality and quality of the light.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. In a color evaluation standard light source unit that enables color evaluation under the same illumination in color tone management work and color design work, a plurality of standard light source lamps 2 composed of fluorescent lamps are provided on the left and right of a rectangular unit frame 1. A different kind of lamp is arranged as a comparative light source lamp 8 between the standard light source lamps 2 arranged separately on the left and right and a plurality of the standard light source lamps 2 are arranged below the standard light source lamp 2 and the comparative light source lamp 8. , Mirror surface looper 3 for glare prevention
And a wall washer fluorescent lamp 4 for illuminating the wall around the standard light source unit for color evaluation is provided on the outer periphery of the unit frame 1.
Source lamp 2, comparative light source lamp 8, and wall washer firefly
Light lamp 4 is integrally attached, and a plurality of lamps
Adjustable spacing between standard light source lamps 2 arranged separately
It is obtained by the.

[0005]

Next, the operation obtained by the standard color evaluation light source unit of the present invention will be described. With the standard light source unit for color evaluation of the present invention, in order to secure sufficient brightness for work,
The work surface average illuminance is about 1000 lux. The illuminance is adjusted by blinking several of the standard light source lamps 2 to about 2000 lux when evaluating a dark color having a brightness of 3 or less, and to about 600 lux when evaluating a relatively bright color. I do. Also, in order to make the brightness of the work surface uniform,
The allowable uniformity within the work surface shall be within 1.5. A state in which glare of the light source is not felt. In addition, it can be easily replaced with various fluorescent lamps having different color temperatures. Also, depending on the purpose, the visual target is shaded. Further, in order to prepare a bright and uniform surrounding environment, the luminance ratio is controlled to be within 1 to 5.

[0006]

Next, an embodiment will be described. 1 is a perspective view from below of a standard light source unit for color evaluation U of the present invention, FIG. 2 is a side sectional view of the standard light source unit for color evaluation U, and FIG. 3 is a partition curtain 5 and a standard light source unit for color evaluation U. 4 is a side view showing the relationship between the standard light source unit U for color evaluation and the object mounting table 7, and FIG. 5 is a color evaluation standard in which the interval between the standard light source lamps 2 can be changed. FIG. 3 is a side sectional view illustrating a configuration of a light source unit U.

Next, the configuration of the color evaluation standard light source unit U will be described with reference to FIGS. 1, 2 and 3. FIG. The standard light source unit for color evaluation U is provided with a standard light source lamp 2 for illuminating a work surface on the object mounting table 7, and the standard light source lamp 2 is composed of three fluorescent lamps each having a lower opening and arranged on the left and right sides. There are six. In addition, a different kind of lamp is arranged between the standard light source lamps 2 as the comparative light source lamps 8, and the comparative light source lamps 8 are turned on instead of the standard light source lamps 2 so that a comparative visual feeling can be obtained. Make up.

In order to minimize glare even when the light source enters the visual field of the viewer, a mirror surface having a light shielding angle of 30 degrees is provided below the standard light source lamp 2 and the comparative light source lamp 8 to prevent glare. The looper 3 is arranged. In addition, the standard light source lamp 2 is installed at a height of 1200 mm from the work surface of the object mounting table 7 in order to secure an average illuminance.
In order to keep the surrounding environment constant, the surroundings of the work space are shielded by an achromatic partition curtain 5. And
The partition curtain 5 has a wall washer fluorescent lamp 4
To prevent the color of the partition curtain 5 from affecting the observer. By irradiating the partition curtain 5 with the wall washer fluorescent lamp 4 in this manner, the luminance of the background can be made uniform, so that the surrounding environment can be satisfactorily prepared. Also, two halogen lamps 6 are arranged at the left and right positions of the unit frame 1, and by irradiating the halogen lamps 6, the texture of the object can be confirmed with shading.

As shown in FIG. 2, a comparative light source lamp 8 is disposed at the center.
The standard light source lamp 2 is a portion that is turned on alternately, and when used as a normal color evaluation standard light source unit,
The comparative light source lamp 8 is turned off. And
The standard light source unit U for color evaluation of the present invention is characterized in that the standard light source lamp 2 is not disposed in the central portion. If the standard light source lamp 2 is arranged at the center of the unit frame 1, uniform and standard light cannot be obtained, which is unsuitable as a standard light source for color evaluation.
Therefore, the standard light source lamps 2 are arranged separately from each other on the left and right except for the center.

If the standard light source lamp 2 is left bare, the standard light source lamp 2 directly enters the operator's vision.
Since glare is a problem, the mirror looper 3 for preventing glare
Is arranged. Thus, the viewer is not confused by glare. When the luminance of the background constituted by the wall surface is not uniform, the color, color tone and texture of the wall surface change. By applying, the luminance of the background can be made uniform.

The wall washer fluorescent lamps 4 are arranged on four outer peripheral surfaces of the unit frame 1 formed in a rectangular shape, and halogen lamps 6 are arranged on the outer sides in the left and right longitudinal directions to create a shadow on the object. , You can check the texture.

In FIG. 5, left and right standard light source lamps 2 are shown.
Is adjustable. Adjustment forward / reverse rotation motors 9.9 are arranged outside of the comparative light source lamp 8, and the rotation of the adjustment forward / reverse rotation motors 9.9 causes the left and right standard light source lamps to pass through a screw rod and a female screw. The socket part 2 is slidable. If it is necessary to arrange a wide area on the surface of the object mounting table 7 due to the size and width of the object, the surface with uniform brightness is widened by the adjusting forward / reverse motors 9.

[0013]

As described above, the present invention has the following advantages. By standardizing the color evaluation standard light source unit U, when looking at the same thing,
Even if the location and time were different, it was possible to see things in the same color and tone, and it was possible to discuss by telephone. Further, by turning on the comparative light source lamp 8 instead of the standard light source lamp 2, a comparative visual perception can be obtained. Further, since the wall washer fluorescent lamp 4 for irradiating the partition curtain 5 is provided, the brightness of the background can be unified, and the viewer is not confused by the background. Also,
Since the distance between the left and right standard light source lamps 2 can be adjusted,
Depending on the size and width of the object, the surface of the object mounting table 7
When it is necessary to arrange the standard light source lamp 2,
By adjusting the spacing, it is possible to expand the surface with uniform brightness.
It became possible to do.

[Brief description of the drawings]

FIG. 1 is a perspective view from below of a color evaluation standard light source unit U of the present invention.

FIG. 2 is a side sectional view of the color evaluation standard light source unit U.

FIG. 3 is a bottom view showing an arrangement of a partition curtain 5 and a standard light source unit U for color evaluation.

FIG. 4 is a side view showing the relationship between the standard light source unit for color evaluation U and the object mounting table 7;

FIG. 5 is a side sectional view showing the configuration of a standard light source unit for color evaluation U in which the distance between standard light source lamps 2 can be changed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit frame 2 Standard light source lamp 3 Mirror looper for glare prevention 4 Wall washer fluorescent lamp 5 Partition curtain 6 Halogen lamp 7 Object mounting table 8 Comparative light source lamp 9 Adjustment forward / reverse motor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-158008 (JP, A) JP-A-60-42934 (JP, U) JP-A-63-185533 (JP, U) Japanese Industrial Standards / Surface Color sensation comparison method (JIS Z 8723-1988), Japan, Japan Standards Association, March 1, 1988 Akihiko Miura, Kiyoshi Ueda, Lighting Data Sheet No. 747 Lighting of Toyota Motor Tokyo Building with Indirect Lighting Fixtures, Journal of the Illuminating Engineering Institute of Japan, Vol. 67, No. 11, 546 (5)-(6) (58) Field surveyed (Int. Cl. ⁷ , DB name) G01J 3/00-3/52 G01N 21/00-21/61 JICST file (JOIS)

Claims (1)

(57) [Claims] In a color tone management work and a color design work,
In a standard light source unit for color evaluation that enables color evaluation under the same illumination, a plurality of standard light source lamps 2 composed of fluorescent lamps are separately arranged on the left and right sides of a rectangular unit frame 1 and arranged on the left and right sides. A comparative light source lamp 8 is arranged between the standard light source lamps 2 which are separately arranged.
A mirror looper 3 for preventing glare is disposed below the standard light source lamp 2 and the comparative light source lamp 8, and a wall around the color evaluation standard light source unit is provided around the unit frame 1. A wall washer fluorescent lamp 4 for illumination is provided , and a standard light source is provided on the unit frame 1.
Lamp 2, comparative light source lamp 8, and wall washer fluorescent
The lamp 4 is integrally attached, and there are no multiple lamps on the left and right.
It is possible to adjust the distance between the standard light source lamps 2 separately arranged
A standard light source unit for color evaluation, characterized in that: