JPH01244842A - Colored laminate reflector - Google Patents

Abstract

PURPOSE:To obtain an artificially colored reflector, which substitutes for golden one, by a method wherein a specified colored light transmission layer is provided on the surface of a metal, which forms a reflective surface, and further an antireflection layer is provided on the light transmission layer. CONSTITUTION:An antireflection layer 3 is provided on a colored light transmission layer 2, which is provided on the surface of a metal 1 forming a reflective surface. The saturation of the light transmitted the colored light transmission layer 2 locates in the outer peripheral band of Munsell notation system and its lightness is 6 or less and its hue is H. The antireflection layer 3 reflects the remaining reflected light having the hue (h). The hue H and the hue (h) are set to be equal or approximately equal to each other. When the hue H of the light transmitted the light transmission layer is deep red, the antireflection layer is designed so as to prevent the reflection of bluish color from occurring in order to let red color emerge in the remaining reflected light (h). When the transmitted light is blue, the antireflection layer is designed so as to prevent the reflection of red color from occurring in order to let blue color emerge in the remaining reflected light. Further, when the transmitted light is purple-red, the antireflection layer is designed so as to prevent the reflection of green color from occurring in order to let purple-red color emerge in the remaining reflected light.

Description

[Detailed description of the invention] 【Technical field】

The present invention replaces colored metal reflection represented by golden color (
It is an artificially colored reflector (other than golden yellow).

[Prior art]

A colored film adhered to the surface of metal foil. Colored films with metal vapor-deposited on the back side are commercially available. In both cases, the light rays become colored when they pass through the colored film layer.

【Problems to be solved】

If you look closely at the colored films mentioned above. Coexisting with the beautiful chromatic rays that pass through the film, there are also white rays that are reflected from the surface of the film, resulting in the beauty (saturation) of one chromatic ray being diminished. Such observations have been made in prior patent applications No. 63-21719 and No. 63-26870 regarding transmitted colored light rays and white light rays reflected from a surface. The inventors of the present invention reasoned that if such white reflected light could be completely eliminated, it would be possible to create an artificially colored reflector with a color other than golden instead of golden.

[Means to solve the problem]

The present invention is configured as follows. That is, a colored light-transmitting layer is provided on the surface of the metal that forms the reflective surface, and an anti-reflection layer is provided on top of the colored light-transmitting layer. The antireflection layer is provided so that the light ray has a brightness of 6 or less and a hue of H, and the above-mentioned antireflection layer reflects the residual reflected light ray with a hue blur, and the hue H and the hue are the same or similar hues. Therefore, no white reflected light rays appear, beautiful colored light rays are not obstructed by white surface reflected light rays, and an artificially colored (other than golden yellow) reflector is obtained instead of golden yellow.

Embodiment 1 In FIG. 1, 1 is a metal layer forming a reflective surface, 2 is a colored transparent layer, 31...3. is an antireflection layer. The light that passes through the transparent layer 2 has a beautiful (not cloudy) color that is located in the outer zone of the Munsell color system in terms of saturation, and is a (dark) color with a lightness of 6 or less, and can be any hue H5, for example, red. , for example, to have a hue such as blue. At the current state of the art, anti-reflection coatings cannot prevent 100% of light rays from being reflected, and some light rays are reflected without being prevented from being reflected. Generally, when designing an antireflection film, an arbitrary wavelength λ of the target light beam is selected as a reference light beam, and the film is designed to produce the best antireflection effect for that wavelength λ. Therefore, at wavelengths far from the wavelength λ, reflected rays remain on the surface (hereinafter referred to as residual reflected rays). The present invention utilizes residual reflected light of wavelengths that cannot prevent one reflection, contrary to general antireflection films. For example, if the hue (hue) H of the light transmitted through the light-transmitting layer is deep red (near the wavelength 620 nm) as shown in Figure 2, the first anti-reflection layer prevents reflection of the blue light and the remaining reflected light 6h. Design it to appear in red. If the transmitted light is blue (for example, around a wavelength of 470 nm), the design is such that red light is prevented from being reflected and residual reflection appears in blue, as shown in FIG. The transmitted light is reddish-purple (e.g. wavelength 47
In the case of a color mixture of 0 nm and a wavelength of 620 rrn), as shown in FIG. 4, the design is such that reflection of green is prevented and the remaining reflected light appears as reddish-purple. Antireflection involves complex elements such as when the antireflection coating is multilayered, and it may not be as simple as shown in Figures 2 to 4. The hue is designed to be close to the hue H of the transmitted light. There is no problem if H and h completely match, but even if they do not match, an approximation suffices. The approximations in this case are, for example, deep red (λ620nm), orange (590r+m), dark blue (λ470nm), blue-green (490nm), reddish-purple (λ6
This is a case where the color impressions are similar, such as 20 nm and 470 nm) and deep blue (470 nm). If the color is similar like this. Compared to conventional products that have a reflective surface deposited on a colored film, the unpleasant sensations experienced by humans can be significantly reduced. In addition, if you sacrifice the effect (aesthetic sense), ■4
and h Hues that are further apart from each other by more than the above values, such as blue and green, red and yellow, magenta and red, magenta and blue, which are adjacent on the chromaticity diagram of the CIE color system I can tolerate it even if I choose. Generally speaking, an anti-reflection film is something that prevents the reflection of specific wavelengths (for example, visible light), but it may not be called an "anti-reflection film" when light rays that are not prevented from being reflected are used, as in the present invention. . However, even in such a case, it is necessary to prevent the reflection of unnecessary light rays, so in the present invention, in order to prevent the reflection of "interfering light llll", which is expressed as an anti-reflection film, the hue H is used. This prevents the reflection of light rays of wavelengths that are complementary to the other color. However, the negative expression of the word "prevention" may lead to misunderstandings, so I will provide an additional explanation. Among the incident visible light rays, there is no need to prevent reflection of light rays whose hue is close to the hue H of the colored transparent layer. If there were a "selective reflection film" that could reflect only the rays of hue H among the incident rays at a high rate, the result would be the same as that of preventing reflection of rays of hues other than H. Therefore, even if the expression "antireflection film" used in the explanatory text is changed to "antireflection film that selectively reflects," the content remains the same.

[Example 2] It is easy to provide the light-transmitting layer 2 with a color, and there is no reason to avoid it, but as one embodiment, instead of providing a colored light-transparent layer, or in cooperation with a colored light-transparent layer, The anti-reflection layer has a color, so that the transmitted light rays are as shown in Example 1.
The antireflection layer of Example 1 may be provided in a colored manner so as to have the saturation, lightness, and hue described in .

[Example 3] Even if a metal layer 1, a colored transparent layer 2 are provided, and the color saturation and brightness 1 hue of the transmitted light of the colored transparent layer are provided in the same manner as in Example 1, if the antireflection layer remains. If the hue of the reflected light ray is not the same as or close to the hue H of the transparent layer, the residual reflected ray will interfere with the colored transmitted light,
Beautiful transmitted light rays end up losing their beauty. Therefore, it is most preferable that the hue H and the hue H are the same or similar as in the first and second embodiments. However, if for some reason, such as manufacturing cost, the hue is unavoidably different from the hue H and includes interference reflected light. Disturbance may be suppressed by keeping the amount of reflection of the remaining interferingly reflected rays low. For example, the remaining interferingly reflecting rays of an antireflection layer may be suppressed to a reflection amount of less than 3% of the total rays. If possible, set it so that it is as close to zero as possible, such as keeping it below 1%. Figure 5 shows a case where the colored transparent layer is deep red and the residual reflected light is reddish-purple, and light around blue (λ470 nm) is the interfering light. Figure 6 shows the case where the colored transparent layer is deep blue and the residual reflected light is reddish-purple.
) is the interfering ray. In both cases, the interference light beam is set to be as low as possible.

Embodiment 4 The purpose of the present invention is to prevent interference caused by interfering light, and the effect of the invention is weak when the transmitted light is close to white. For example, pink is a color that is originally mixed with white, so there is little need for 2-reflection prevention. In addition, bright colors such as yellow do not succumb to white interfering light, so there is little need for anti-reflection. However, even for colors with high brightness such as orange and mauve, it is better to have no white interfering rays. If you can bear the cost increase, you may implement this as an example. It is useless for colors with extremely high brightness, such as dark red and yellow, and is applied to colors where the brightness of the transmitted light is 7 or less. (Example 5) An example is shown in which the reflective layer 1 is made of metal.If there is something similar to metal that reflects light, the reflective layer may be a non-metal.The material of the reflective layer 1 does not matter.The above examples It is not necessary to limit the number of anti-reflection layers to four as shown in FIG.
The number of layers is arbitrary. Also. The reflective surface l may be a thin film as shown in the figure, or it may be a material with a thick cross section. In the case of a thin film, it may be applied to another object to cover it integrally, or it may be used as a thin film for packaging other objects. Throughout each example, the outer circumferential band of the Munsell color system means a beautiful color, and does not refer only to the outermost edge such as the 5th circumference, but also to a wide band near the outer circumference, including slightly inward. means. In FIG. 1, the reflective surface 1 is depicted as a flat surface for convenience of explanation, but it may be any surface such as a finely uneven surface or a curved surface.

【effect】

Instead of a colored metal reflective surface represented by golden yellow. An artificially colored (other than golden yellow) reflector is obtained,
It can coat objects and make them shine in color.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of a colored reflector showing an embodiment of the present invention, and FIGS. 2 to 6 are charts showing the relationship between transmitted light rays and reflected light rays.

Claims (1)

[Scope of Claims] [1] A colored light-transmitting layer is provided on the surface of the metal forming the reflective surface, and an anti-reflection layer is provided thereon, and the transmitted light of the colored light-transmitting layer is based on the Munsell color system. The saturation is located in the outer peripheral zone, the brightness is 6 or less, and the hue is H, and the above antireflection layer reflects the residual reflected light rays with hue blurring, and
A colored reflective laminate that is provided to have the same or similar hue. [2] The anti-reflection layer is colored, and the transmitted light is
The colored reflective laminate according to claim 1, wherein the colored reflective laminate is provided to have the saturation, brightness, and hue as described in claim 1. [3]Claim [1] wherein the hue h is a hue distant from the hue H and includes disturbing reflected light rays, and the antireflection layer suppresses the remaining disturbing reflected light rays to less than 3% of the total light rays. ] and the colored reflective laminate according to claim [2]. [4] The colored reflective laminate according to any one of claims [1] to [3], wherein the brightness of the transmitted light beam is 7 or less. [5] The colored reflective laminate according to claims [1] to [4], wherein the reflective surface is a nonmetallic material.