JPH0643705Y2 - Color comparison device for object color and light source color - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a color comparison device for comparing the light source color displayed on a display screen with the object color of a sample illuminated by an illumination light source.

[Prior Art] In recent years, design creation using a computer color graphic device (CG) has been performed in various industrial fields such as textiles, apparel, automobiles, home appliances, and printing.
Not only the outline color design image but also the final design color is decided by CG. For this reason, the light source color and the color sample that the designer etc.
It is necessary to compare and observe the object color of the sample such as the sample and color chart.

When comparing the light source color on this CRT color display and the object color of the sample, it is desirable that the sample to be compared be located as close as possible to the light source color on the CRT color display. The lighting must be in proper condition.

Conventionally used CG does not consider the illumination light source for observing the sample at all.
Appropriate illumination of the sample is not taken into consideration, since it is performed only by ordinary indoor illumination lamps in the vicinity and outside light such as window light. The only ones that prevent reflection of external light to the CRT color display and provide a shield or an anti-glare hood that protects the eyes while making the screen easy to see, etc. are generally known, but these are not known. Shield does not take into account changes in color on the CRT color display screen due to shielding.

[Problems to be solved by the invention] When a worker such as a designer compares the object color of a sample such as a color sample or a color chart with the light source color toned on the CG CRT color display screen, the CRT When external light is reflected on the color display screen, there is a problem that the appearance changes due to interference, reflection, etc. due to the light, and the color of the sample object also differs depending on the external light emitted. There is a problem of the condition of color matching. The present invention has been made in view of the above problems, and an object thereof is to obtain a color comparison apparatus having a good color comparison environment.

[Means for Solving the Problem] The present invention provides a CRT color display device for displaying a light source color as an image, an illumination light source for illuminating a sample provided in the vicinity of the display device, and a space between the illumination light source and the display device. It is composed of a light shielding plate provided.

[Operation] When performing color comparison between the object color of the sample placed near the CRT color display device and the light source color displayed in the image on the CRT color display device, the sample is illuminated under constant optical conditions and illuminated by a light shielding plate. By blocking the reflection of the light source on the display screen and preventing changes in the appearance of the light source color due to the reflection of light, it is possible to always compare colors under the same environment.

[Example] While design production using a computer color graphic device (CG) has been performed in various industrial fields, direct conversion of a color perceived by a designer on CG into object color data equivalent to that. Is still insufficient,
The colors perceived by the designer are not reproduced accurately.
That is, at present, the transmission of the light source color on the CG, that is, the conversion to the object color, is performed by the color of the hard copy of the screen by the medium such as the ink jet printer or the photograph, but the ink or the photo luminescent agent of the medium printer As described above, since the spectral characteristics of the phosphor of the color display are essentially different, it has been impossible to obtain object color data equivalent to the light source color on the color display.

Therefore, the applicant previously developed a new technology for directly converting the color (light source color) determined by the designer on CG into object color data without using a hard copy by using a color comparison device.

This is to set a color comparison environment in which the light source color 5 displayed in the background of achromatic color emission on the CRT color display screen and the object color of the sample 8 in the achromatic background can be observed at the same time. With the CRT color display screen, any of the three primary color phosphors R, G, and B of the CRT color display can emit light and be expressed in a uniform color. It is a method of converting object color data and light source color data when the perceived light source color 5 is displayed on the screen.

An embodiment of the present invention will be described with reference to the drawings based on the setting of the color comparison environment described above.

FIG. 1 is an overall perspective view of the first embodiment of the present invention, and 1 is a computer color graphic (CG). C of CG1
The CRT color display hood 3 is attached to the front part of the RT color display 2, and an illumination light source 6 such as a standard C light source is provided on the lower front part of the CRT color display 2. The light of the illumination light source 6 is a CRT color display screen. A light shielding plate 7 is provided between the CRT color display screen 4 and the illumination light source 6 so as not to enter the area 4.

Therefore, when comparing the object color and the emission color, the sample 8 such as a color sample, a sample, and a color chart is placed on the table 9 under the illumination light source 6 so that the sample 8 is irradiated with appropriate light. By always observing the object color of the sample 8 under appropriate conditions,
It is possible to prevent the color change due to the color matching phenomenon. The CRT color display hood 3 provided on the CRT color display 2 prevents external light from being reflected, and the light from the illumination light source 6 is also shielded by the light shielding plate 7 provided therebetween, so that the CRT color display screen 4 It is possible to set the color comparison environment of the light source color in the upper toning area and the object color.

FIG. 2 shows a second embodiment of the present invention. CG1 CRT color display 2 CRT color display hood 3 on the front
And an illumination light source 6 is provided on the side of the CRT color display 2, and the side of the CRT color display 2 and the illumination light source 6 are arranged so that the light of the illumination light source 6 does not enter the CRT color display screen 4. A light-shielding plate 7 is provided between and. The sample 8 to be observed is arranged on the side of the CRT color display device 2 and is illuminated by an appropriate illumination light source 6 to compare the object color of the sample with the light source color 5 on the CRT color display screen 4. As in the embodiment, it is possible to set an appropriate color comparison environment and to observe and compare the light source color and the object color to be compared side by side at the same height.

[Advantages of the Invention] The present invention provides a CRT color display device for displaying an image of a light source color as described above, an illumination light source provided near the display device for illuminating a sample, and provided between the illumination light source and the display device. It is made up of a light-shielding plate that prevents the adverse effects caused by the reflection of the illumination light source on the display screen, and makes it possible to observe the object color of the sample under a favorable environment and compare it with the light source color. .

[Brief description of drawings]

FIG. 1 shows a perspective view of the first embodiment, and FIG. 2 shows a perspective view of the second embodiment. 2 ... CRT color display device 5 ... Light source color 6 ... Illumination light source 7 ... Shading plate 8 ... Sample

Claims (1)

[Scope of utility model registration request] 1. A CRT color display device for displaying the light source color as an image in a color comparison environment in which the light source color displayed on the CRT color display screen and the object color of the sample can be observed at the same time, and in the vicinity of the display device. A color comparison device for object color and light source color, comprising: an illumination light source provided to illuminate the sample, and a light shielding plate provided between the illumination light source and the display device.