JPS6351710B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser medical device using a semiconductor laser, and aims to provide a laser medical device that can irradiate high-power laser light.

It has been reported that symptoms such as stiff shoulders can be treated by irradiating the human body with laser light.
A conventional medical device using this laser light, for example, as shown in FIG. 1, extracts laser light from a gas laser or solid-state laser device 1 through an optical fiber 2 and irradiates it onto an affected area.

However, this device has the disadvantage that the laser device is large and the main body and irradiation part are separated, making it inconvenient to handle. In order to solve this drawback, a health and treatment device is being considered that uses a compact, lightweight semiconductor laser with low power consumption to integrate the laser beam irradiation part and the main body, making it easy to handle as a handy type. However, semiconductor lasers generally produce an output of only a few tens of mW, and have the drawback of requiring a long irradiation time (treatment time). or,
Even when laser light is focused and used to increase the power density of the light, there is a drawback that it is difficult to irradiate the entire affected area. The present invention aims to eliminate the above-mentioned drawbacks, and one embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, semiconductor lasers 3a, 3b,
3c and 3d are arranged in a ring shape, and the condenser lens 4
A, 4b, 4c, and 4d are used to focus the light on the center of the circle. A reflector 5 with a pyramid-like structure is placed at the center of the circle, the traveling direction is bent almost vertically, and a condenser lens 6 is placed.
When the light is focused again using a laser beam, the laser spot can be imaged in close proximity. In such a configuration, the output is quadrupled if the loss of the optical system is ignored. Semiconductor lasers have small light emitting spots and the laser body is large compared to the diameter of the spot, so it is not possible to reduce the spacing between the spots by arranging the lasers in the same direction. According to this device, a plurality of laser spots can be arranged close to each other.
The pyramid-shaped optical element 5 may be one that utilizes the total reflection of the prism 7 shown in FIG.

As described above, according to the present invention, the laser beams from a plurality of semiconductor lasers can be focused at one point, so it is possible to obtain laser beams with high output, and it is possible to obtain a compact laser medical device. .

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional laser medical device, FIG. 2 is a perspective view of essential parts of a laser medical device according to an embodiment of the present invention, and FIG. 3 is a principle diagram of parts used in the device. 3a, 3b, 3c, 3d... semiconductor laser, 4
a, 4b, 4c, 4d... condenser lens, 5... reflector, 6... condenser lens.

Claims (1)

[Claims] 1. A plurality of semiconductor lasers arranged radially from the center of one plane, and a first optical lens group arranged corresponding to each of the semiconductor lasers to focus each laser beam near the center of the plane. , consisting of a pyramid-shaped optical element located at the center of the plane and vertically reflecting each laser beam, and a second optical lens condensing each laser beam reflected by the optical element. A laser medical device characterized by: