JPH0524057Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a hair gloss measuring device used for measuring the gloss of human hair or animal hair.

Problems to be solved by conventional techniques and ideas In recent years, with the spread of permanent waves, hair dyes, hot curlers, hair dryers, etc., hair is becoming more susceptible to damage and losing its youthful luster. On the other hand, as people become more conscious about their appearance, there is a considerable increase in interest in the luster of hair, that is, the degree to which hair reflects light.

Traditionally, as a means of measuring hair gloss with an instrument,
It has been proposed to use a photogoniometer [RF Stamm et al. (J.Soc.Cosmet.Chem.,
28571 (1977) and J.Soc.Cosmet.Chem., 28601
(1977) and A. Guiolet et al. (Preprints of the
th IFSCC Congress, Barcelona, 1986,
Vol.11.]

However, although the photogoniometer can measure the shine of cut hair, there is a problem in that it cannot measure the shine of hair in its natural state without being cut.

The present invention was developed in view of the above circumstances, and an object of the present invention is to provide a gloss measuring device that can easily measure the gloss of hair, whether the hair is cut off or in its natural state without being cut. shall be.

Means for Solving the Problems In other words, in order to achieve the above object, the present invention provides a plate-shaped base having a recess formed on the upper surface in which the hair is placed, and a fixing member that fixes one end of the hair placed in the recess. a hair holder comprising a plate-shaped main body, a protrusion that can be fitted into a recess of the holder on the lower surface of a plate-shaped main body, and a hollow part for an optical path that penetrates the protrusion in the main body. In addition, a hair holder is provided with a comb attached so that its tip protrudes from the bottom of the convex portion, and a light source and a detector are provided inside the box-shaped body, and the light from the light source is irradiated onto the object to be measured. and a measuring instrument configured to detect the reflected light with a detector,
A convex part of a hair presser was fitted into a concave part of the hair holder, and one end of the hair was held between the concave part and the convex part by the fixing member, and the other end was held by the comb body. At the same time, a measuring tool is placed on the hair holder, and light from a light source is irradiated onto the hair through the optical path cavity, and the reflected light is incident on the detector through the optical path cavity. It is an object of the present invention to provide a hair gloss measuring device characterized in that it is configured to

Function The gloss measuring device of the present invention has the above-described structure, so that the hair is held between the hair holder and the hair presser in a cut state or in its natural state without being cut, and the hair is measured on the hair presser. Hair gloss can be easily measured by simply setting the tool. In addition, since a fixing member is provided on the holder and a comb is provided on the presser, when the presser is attached to the holder, the hair placed on the holder can be scooped out with the comb.
By arranging each hair straight and parallel to each other and pressing both ends of the hair with a fixing member and a comb body, the hair can be held in a tidy state. Therefore, by irradiating the hair with light from a light source and detecting the reflected light, the gloss of the hair can be accurately and quantitatively measured from the amount of reflected light in good correlation with visual perception.

Next, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to the following Examples.

Example FIG. 1 shows an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a hair holder comprising a square plate-shaped base 2 and a fixing member 7. As shown in FIG. The base 2 is
A rectangular groove-shaped recess 3 is formed in the center of the upper surface along the length direction, and the other end of the bottom wall of the recess 3 in the length direction is an inclined wall 3a that is gently inclined downward. A rectangular notch 4 for attaching a fixing member is formed along the width direction on one side of the recess 3 at one end in the length direction of the protrusion 3, and is opposite to this notch 4. A square groove 5 for inserting a fixing member is formed on the other side of the recess 3 along the width direction. Incidentally, screw holes 6, 6 (only one shown) are screwed into both side walls of the notch 4.

Further, the fixing member 7 has a screw insertion hole 9 bored in the base end 8a of the L-shaped square rod-like main body 8, a columnar part 8b formed in the middle part in the longitudinal direction, and a cylindrical part 8b in the distal end part. A knob body 8c is attached,
The base end 8a of the main body 8 is connected to the notch 4 of the base 2.
and insert washers 10, 10 between the base end 8a and both side walls of the notch 4, respectively, and insert the screws 11 from the outside of the base 2 into the screw holes 6 on one side of the side wall and on the other side. washer 10, base end 8a
The fixing member 7 is rotatably attached to the base body 2 by passing it through the screw insertion hole 9 of the base body 2, the washer 10 of the other side, and screwing into the other screw hole 6 of the side wall portion.

Reference numeral 12 denotes a hair presser equipped with a square plate-shaped main body 13, and the length of this main body 13 is approximately equal to the length from the position of the fixing member 7 of the holder 1 to the other end in the length direction of the base 2. There is. The lower surface of the main body 13 has a recess 3 of the holder 1 along the length direction.
A rectangular prism-shaped protrusion 14 that can be fitted into the main body 13 is integrally formed, and the main body 13 has longitudinal side wall portions extending from the upper end of the main body 13 to the lower end of the protrusion 14, as shown in FIG. Inclined walls 15a, 15a, respectively
An optical passage cavity 15 having a substantially inverted pyramid shape is formed. Further, as shown in FIG. 2, a comb insertion groove 16 is formed diagonally along the width direction at the other end in the length direction of the lower surface of the convex portion 14.
A comb body 17 is removably inserted with its tip portion protruding outward from the bottom surface of the convex portion 14.

Furthermore, 18 is a measuring tool. This measuring tool 18
As shown in FIG. 3, a light source 20 such as tungsten and a detector 21 such as a silicon photodiode are disposed inside a square box-shaped main body 19 with an open bottom. The object to be measured (hair) is irradiated with light, and the reflected light can be detected by the detector 21. Incidentally, on both sides of the lower end of the main body 19, there are inclined walls 15 of the presser 12.
A pair of blade plates 22, 22 having a shape corresponding to a, 15a and having the same inclination angle are connected, and by placing these blade plates 22, 22 on the inclined walls 15a, 15a, measurement can be performed on the holding tool 12. A tool 18 is adapted to be attached.

The detector 21 of the measuring tool 18 is connected to an amplifier circuit, and the amplifier circuit is connected to a display section, and the light source 21, the amplifier circuit, and the display section of the measuring tool 18 are each connected to a power supply circuit. ing.

When measuring hair gloss using the above device,
First, with the fixing member 7 of the holder 1 open, an appropriate amount of hair is placed at the bottom of the recess 3 along the length direction, and the fixing member 7 is rotated to secure the tip of the square bar-shaped main body 8. By inserting it into the square groove 5 of the holder 1, one end of the hair is held between the bottom surface of the recess 3 and the columnar part 8b. Next, the comb body 17 of the presser 12
Slide the presser 12 onto the holder 1 while moving the hair in the holder 1 from one end of the holder 1 to the other so that each hair is parallel to the other, and the comb body 17 Recess 3 when reaching the end
By fitting the protrusion 14 therein, as shown in FIG. It is held in place by being held down.

Then, as shown in FIG. 4, the measuring tool 18 is set on the presser 12.
Setting 8 may be performed before attaching the presser 12 to the support 1, or after attaching it.

When measuring the luster of the hair after the above operation is completed, light from the light source 20 is irradiated onto the hair 23 through the optical passage cavity 15 of the presser 12, and the reflected light is passed through the optical passage cavity 15 and detected by the detector 21. Inject it into the Then, the gloss of the hair is calculated from the relative energy emitted from the light source 20 and the sensitivity of the detector 21, and is displayed on the display section.

Therefore, according to the measuring device of this embodiment, the gloss of hair can be easily and quantitatively measured by simply interposing the hair between the holder 1 and the presser 12. Further, the hair is held between the concave portion 3 of the holder 1 and the convex portion 14 of the presser 12, the hair is scooped by the comb body 17, and both ends of the hair are pressed by the fixing member 7 and the comb body 17. As a result, each hair axis can be made parallel to the optical system, the hair arrangement width can be kept constant, and the hair surface can be fixed uniformly, and there is no influence of diffused light or color differences, and the correlation with vision can be improved. And hair gloss can be measured with high reproducibility.

In this case, the detector 21 detects the hair 2 from the light source 20.
It is preferable to arrange it in the direction (regular reflection direction) in which the amount of reflected light when the light is irradiated onto the surface of the mirror 3 is maximum (regular reflection direction), thereby making it possible to accurately measure the gloss.

Further, as shown in FIG. 5, the first detector 21a is arranged in the direction where the amount of reflected light is maximized,
Furthermore, it is particularly preferable to arrange a second detector 21b in the normal direction of the hair surface and directly connect these two detectors 21a and 21b.This allows the amount of specular reflection light to the amount of diffuse reflection light to be measured, making it easier to see. It is possible to obtain gloss values that are highly correlated with This is because the eye adjusts the amount of incident light through the pupil, and visual gloss is generally determined by comparing the amount of specularly reflected light and the amount of diffusely reflected light, and based on the relative strength of the specularly reflected light.

Furthermore, the detector 21 (FIG. 4) or 21a, 21
b (Fig. 5) and the hair 23, as shown by the dashed line in the figure, one or more types of fibers are used to match the energy wavelength distribution of the detected reflected light to the specific luminous efficiency curve. It is preferable to arrange a filter 24 or 24a, 24b. That is, by using one type of filter or a combination of many types of filters, and calculating the energy wavelength distribution by calculating [relative energy emitted from the light source] × [filter transmittance] × [detector sensitivity] for each wavelength. This energy wavelength distribution can be matched to the specific luminous efficiency curve, making it possible to measure luster with a higher correlation with visual perception. That is, the color of human hair varies depending on the amount of melanin, such as white, gold, reddish brown, brown, black, etc., and also varies depending on the hair color. In addition, animal hair has various colors,
It's even more complicated. On the other hand, human eyes have different sensitivity depending on the wavelength even when receiving light with the same energy.
Light with a wavelength of approximately 555 nm is felt most strongly, and light with wavelengths outside the visible light range is not felt. Therefore, the visual gloss is strongly influenced by the energy wavelength distribution of the reflected light, that is, by the color. Therefore, by taking into account the sensitivity of the detector for each wavelength of light and matching the energy wavelength distribution of the detected light to the specific luminous efficiency curve, it is possible to make the influence of color on visual gloss equal to that on visual perception. It is possible.

In the above embodiment, the holder and presser body were each formed into a substantially square plate shape, and the recesses and protrusions were also square groove-shaped and square prism-shaped, respectively. It can be made into an appropriate shape. Further, there is no limitation to the configuration of the fixing member or the shape of the measuring tool, and other configurations may be changed in various ways without departing from the gist of the present invention.

Effects of the invention As explained above, according to the luster measuring device of the present invention, the luster of hair can be easily and quantitatively measured in both the cut state and the natural state without cutting. , the luster of a customer's hair can be easily measured using cosmetic points, etc.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a cross-sectional view taken along the line of FIG. 1 showing the hair presser of the same example, FIG. 3 is a schematic cross-sectional view showing the measuring tool of the same example, and FIG. FIG. 5 is a cross-sectional view showing a state in which the gloss is measured, and a schematic diagram showing the arrangement positions of the detectors when two detectors are provided in the measuring tool. 1... Hair holder, 2... Square plate-shaped substrate, 3...
... recess, 7 ... fixing member, 12 ... hair presser,
13... Square plate-shaped main body, 14... Convex portion, 15...
Optical passage cavity, 16...Comb insertion hole, 17...
Comb body, 18... Measuring tool, 19... Square box-shaped main body, 20... Light source, 21... Detector, 23... Hair, 24... Filter.

Claims (1)

[Claims for Utility Model Registration] 1. A hair holder comprising a plate-shaped base having a recess formed on the upper surface in which hair is placed, a fixing member for fixing one end of the hair placed in the recess, and a plate-shaped A convex portion that can fit into the concave portion of the holder is formed on the lower surface of the main body, and a cavity for an optical path passing through the convex portion is bored in the main body, and the tip of the comb body has a convex portion. A hair holder is attached to protrude from the bottom, and a light source and a detector are arranged inside the box-shaped body.The light source irradiates the object to be measured and the reflected light is detected by the detector. a measuring tool, the protrusion of the hair presser is fitted into the recess of the hair holder, and one end of the hair is held between the recess and the protrusion by the fixing member. , while the other end is held in a state of being pressed by the comb body, a measuring tool is placed on the hair holding tool, light from a light source is irradiated onto the hair through the optical passage cavity, and the reflected light is measured. A hair luster measuring device characterized in that the hair gloss is made to enter a detector through an optical path cavity. 2. The gloss measuring device according to claim 1, which uses one detector and is arranged in the specular reflection direction. 3 Using two detectors, one detector is placed in the specular reflection direction and the other detector is placed in the normal direction of the hair surface, and the amount of specular reflection light and diffuse reflection detected by the above detectors are calculated. The gloss measuring device according to claim 1, which determines the gloss from the difference between the amount of light and the amount of light. 4. The gloss measuring device according to claim 1 or 2, wherein the reflected light is incident on a detector through a filter that matches the energy wavelength distribution to a specific luminous efficiency curve.