JPS6085732A - Illuminator for body shape photographing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an imaging device for body shape measurement used primarily to measure the scoliosis of a human body, and in particular to improvements to its illumination box.

One of the applicants of this application previously proposed a body photographing device as shown in FIG. 1 (Japanese Patent Laid-Open No. 54-134417).

This was done with the aim of making it possible to measure the human body, such as side curves, with high precision and three-dimensionally from a negative image (silhouette) of the human body. First of all, let me briefly explain this.

FIG. 1 shows the entire body image photographing apparatus having an illumination device 1 and a photographing device 50. As shown in FIG.

The lighting device 1 basically has a lighting box that is made up of a peripheral side m4 that stands upright on a flat base 6 and has only the front wall 2 open, and a ceiling wall 6 that closes the upper part of the peripheral wall 4. The peripheral side wall 4 includes, for example, six balls 7 planted on the base A.
It is formed by wrapping vinyl leather around the surface. Apart from this, the contour of the circumferential wall 4 may be, for example, in the shape of a mouth, polygon, or arc in cross section. A measuring table 5 is fixed at a fixed position on the base 3. The height of the lighting box should be about 2.5 m at most, assuming that the tallest person can enter the box. Three tiers of light cases 10 each containing, for example, four fluorescent lamps are stacked on the left and right inner sides of the front opening 2. A light case 10 having four fluorescent lamps (not shown) forms a flat light source. Each light case 10 and therefore the fluorescent lamps therein are inclined by α with respect to the optical axis (not shown) of the camera 50. When using a commercially available 60W fluorescent lamp, it has been confirmed that when α is about 50°, the unevenness of the person in the negative image becomes clearest and there are no shadows, making it the most preferable. It has been experimentally confirmed that when α=60°, no shadow of the subject (person) is cast not only on the back screen on the peripheral wall of the lighting box but also on the resulting negative image.

A ring-shaped fluorescent light (not shown) is also placed below the measuring table 5 to illuminate the person's feet.

The inner surface of the vinyl leather forming the surrounding wall 4, for example, is colored with a color complementary to the skin color of the person (for example, blue-white with a color value of 5B8/2). Not only is there no distortion, but the unevenness of the person is clearly visible, and the image can be photographed three-dimensionally.

The reason for this is analyzed in detail in the above-mentioned Japanese Patent Laid-Open No. 134417/1983.

A main body 51 of the camera 50 is housed in a light-shielding case 61. The light-shielding case 61 preferably has casters 62 at its bottom.
, so that the relative position with respect to the lighting device 1 can be easily adjusted. The case 61 has a window (not shown) corresponding to a lens (not shown) in front of the case 61 and an operator with a window (not shown) corresponding to a lens (not shown)
It has a window 63 for looking into the subject person inside. window 66
is made of red acrylic glass or the like to prevent the photographic paper from being exposed to light.

A focusing glass (not shown) on which a measuring scale is drawn is fixed to the upper surface of the main body 51, and photographic paper (not shown) is placed on top of the focusing glass. The lid 75 is placed over the photographic paper, and a photograph is taken. Photographic paper has images taken from two directions, such as a frontal image of the person on the left half and a thin image of the person on the right half (for scoliosis measurement, it is necessary to take pictures from at least these two directions). Since they form a pair, a device is needed to move the photographic paper so that the front side of the subject is taken and then the photographic paper is turned to the side. This movement is performed by turning the knob 77. For example, the lid 75 is connected to the main body 51 at one end thereof.
It is hinged and can be opened and closed freely. For example, one rotation of knob 77 corresponds to the required parallel feed of photographic paper. knob 7
When the dial 7 is further turned, the photographic paper on which the latent images photographed from two directions have been formed is fed onto the chute 69.

The latent image formed on the photographic paper is processed using a known copying machine (e.g.
It is copied and developed using a method (Thailand, Kucobee) 80 and appears as a negative image.

In addition, the body imaging device configured as described above is often used as part of the examination of children or schoolchildren, especially to measure scoliosis, and it may be necessary to require the child or schoolchild to bend forward. Become.

However, it is not only difficult to make these young people maintain such a forward bending posture, but it is practically impossible to make all children or school children have the same forward bending angle. Therefore, the reliability of the measurement results was lacking.

The present invention is an improvement of the lighting device shown in FIG. 1 in order to solve the above-mentioned problems.

According to the present invention, a positioning plate 8 is removably attached to the measuring table 5 as shown in FIG. 2.3. This positioning plate 8 is preferably placed on the optical axis, and when the subject stands backward on the measuring table 5 and takes a forward bending posture, the plate 8 is held between both hands to ensure stability without wobbling. It is possible to maintain a bent forward posture. Also, while looking through the camera's viewfinder (not shown), the photographer may say things like ``grasp plate 8 at a shallower position'' or ``grasp plate 8'' depending on the height of the person being photographed.
By instructing the patient to "grasp the subject a little lower," the angle of forward bending can be made almost uniform regardless of the height of the person being measured. In addition, when the person turns sideways and takes a forward bending posture, the plate 8 is placed above the lateral positioning line 9 of the measuring table 5.
The same thing can be done by attaching this. Note that the positioning plate 8 can also be shaped like a bar, a ring, or a hook instead of a plate.

In addition, in particular, if the subject's buttocks protrude outward from the front opening 2 of the illumination device 1 by bending forward, in addition to the diagonal light case 10, a light case parallel to the optical axis may be used. It is also possible to arrange three similar lines 10' (each having, for example, four fluorescent lamps) side by side.

Note that the structure and type of camera to which the lighting device of the present invention is applied is not limited to that shown in FIG. 1, and any type of camera can be used, including general mobile cameras. .

As described above, according to the present invention, by attaching a positioning member within the illumination device, it is possible to uniquely determine the subject's accompanying photographic posture and forward bending posture, thereby significantly improving the reliability of measurement results. .

[Brief explanation of the drawing]

1 is a perspective view of a body image photographing device according to an earlier invention of the present applicant, FIG. 2 is a perspective view of an illumination device according to the present invention, and FIG. 3 is a side view of FIG. 2. DESCRIPTION OF SYMBOLS 1... Illumination device, 2... Front opening, 4... Peripheral wall, 8... Positioning plate, 50... Camera, 51
...The camera body. Figure 1

Claims (1)

[Claims] 1. A lighting device for a body imaging device, which is equipped with a lighting box in which only the front wall facing the imaging device, which is to be placed in front in the direction of the optical axis, is open and a light source for illumination is provided on the surrounding side wall. A flat measuring table for the subject to stand on and a positioning member for grasping or touching the subject when the subject is bending forward are provided in the light box, thereby determining the shooting position and posture of the subject. A lighting device for a body image photographing device, characterized in that it can be uniquely determined.