CN103486453A - Operating lamp - Google Patents

Abstract

The invention discloses an operating lamp, comprising: the light guide plate is a plate body and is defined with a light source incidence surface, a reflection surface and a light emitting surface, an optical axis is defined on the reflection surface through the axis of the center of the light guide plate, a plurality of light reflection structures are formed on the reflection surface of the light guide plate, and the plurality of light reflection structures are symmetrically distributed on the reflection surface along the optical axis; the LED lamps are correspondingly arranged at preset positions close to the light source incidence surface of the light guide plate; the light emitted by the LED lamps enters the light guide plate and is guided in the same direction, is reflected by the reflecting structures on the reflecting surface and is emitted from the light emitting surface to be focused on a plurality of focuses at different heights respectively to form a focal depth, so that an object at any height in the focal depth can obtain sufficient illumination brightness.

Description

surgical light

technical field

The invention relates to a medical lighting fixture, in particular to an operating lamp which uses a light guide plate to guide light and focus on different positions.

Background technique

During the operation, the operating light is a very important medical equipment. No matter it is a general operation, it is very important to provide perfect lighting function. In addition to allowing the doctor to see the surrounding environment of the operation, including surgical instruments and positions, monitors, and the internal conditions of the patient, including the clarity and color of blood vessels and organs, it can also avoid serious injuries caused by unclear vision. medical negligence. Surgical lights used in medical operations must have the characteristics of forming a shadow-free area, which is different from general lighting devices. In terms of the existing surgical light design, due to the use of a single light source, it is easy to cause problems such as insufficient lighting, which causes unnecessary troubles and problems for the doctor during the operation, such as unclear vision of the surgical site, incorrect positioning of surgical instruments or Inconvenient, need to constantly adjust the angle of the monitor screen and other problems, all cause great trouble for the operator. Others also use multi-light sources in combination with reflectors, reflective layers, and light-transmitting mirrors to concentrate the light source at a single focus position. However, this method also makes the depth of focus of the operating light insufficient, and the height of the operating light needs to be adjusted during use. , is also quite inconvenient.

Contents of the invention

However, in addition to directing light from multiple light sources, the existing operating light can only focus on a single height position, which is also its main disadvantage. In order to obtain sufficient illumination brightness for the irradiated object, it is necessary to manually adjust the operating light, which is quite inconvenient to use.

Therefore, an object of the present invention is to provide a surgical light, comprising: a light guide plate, the light guide plate is a plate body and defines a light source incident surface, a reflective surface and a light output surface, and the light guide plate passes through the light guide on the reflective surface. The axis of the center of the light plate is defined as an optical axis, and a plurality of reflective structures are formed on the reflective surface of the light guide plate, and the plurality of reflective structures are distributed on the reflective surface symmetrically to the optical axis; a plurality of LED lamps are arranged correspondingly at a predetermined position adjacent to the light source incident surface of the light guide plate; where the light emitted by the plurality of LED lamps enters the light guide plate and is guided in the same direction, and is reflected by each light-reflecting structure on the reflective surface and emitted from the light-emitting surface to respectively Focusing on multiple focal points at different heights and forming a focal depth, so that an object at any height within the focal depth can obtain sufficient illumination brightness.

Preferably, the plurality of reflective structures are geometric three-dimensional structures that are distributed symmetrically to the optical axis.

Preferably, the plurality of reflective structures are stepped structures.

Preferably, the plurality of LED lamps are arranged on the light guide plate.

Preferably, the plurality of LED lamps are arranged on the side edge of the light guide plate.

Preferably, the plurality of LED lamps are located between the center of the light guide plate and the plurality of reflective structures.

Preferably, an opening is defined in the center of the light guide plate.

Preferably, a plurality of optical elements are respectively arranged between the incident surface of the light source and the plurality of LED lamps.

Preferably, the light guide plate is integrally formed or assembled from multiple pieces.

Through the technical means adopted in the present invention, placing the object to be illuminated within the focal depth range formed by the operating lamp can obtain sufficient illumination brightness, and the cost reduction can also be achieved by making the light guide plate by assembling multiple pieces. effect.

Description of drawings

Fig. 1 is a schematic side view showing an operating light according to a first embodiment of the present invention;

Fig. 2 is a partial sectional view showing the operating light of the present invention;

Fig. 3 is a partial sectional view showing another angle of Fig. 2;

Fig. 4 is a schematic diagram showing the light coverage of the operating light of the present invention;

Fig. 5 shows the second embodiment of the operating light of the present invention;

Fig. 6 shows the third embodiment of the operating light of the present invention.

Explanation of main component symbols

100, 100a, 100b Surgical lights

1 Light guide plate

10 Light incident surface

111 reflective surface

112 Light-emitting surface

12 Reflective structure

13 opening

14, 15 Optical components

21, 22 LED lights

A Focusable Area

D Depth of focus

F1, F2, F3, F4 focus

R1, R2 lighting range

OX Optical axis

Detailed ways

The present invention discloses a surgical light 100, which includes: a light guide plate 1, the light guide plate 1 is a plate body and defines a light source incident surface 10, a reflective surface 111 and a light output surface 112, and the light guide plate passes through the reflective surface 111 The axis of the center of 1 is defined as an optical axis OX, and a plurality of reflective structures 12 are formed on the reflective surface 111 of the light guide plate 1, and the plurality of reflective structures 12 are distributed on the reflective surface 10 symmetrically to the optical axis OX; a plurality of LED lights 21, 22, correspondingly arranged at predetermined positions adjacent to the light source incident surface 10 of the light guide plate 1, between the light source incident surface 10 and the LED lamps 21, 22 are respectively provided with a plurality of optical elements 14, 15, the optical elements 14, 15 is preferably a collimator, which can converge the light rays with large divergence angles emitted by the LED lamps 21 and 22 into applicable light rays with small divergence angles (nearly parallel). The light emitted by the plurality of LED lamps 21, 22 enters and is guided in the same direction by the incident surface of the light source of the light guide plate, and is reflected by each reflective structure 12 on the reflective surface 111 and emitted by the light-emitting surface 112 to respectively focus on multiple light sources at different heights. The focal points F1, F2, F3, and F4 form a focal depth D, and this area is defined as a focusable area A, so that an object at any height within the focal depth D can obtain sufficient illumination brightness.

In this embodiment, the plurality of reflective structures 12 are circular stepped structures formed from the center of the reflective surface 111 of the operating light 100 from inside to outside, and each circular stepped structure has a predetermined interval, depth and slope angle. So that the incoming light can be focused at different positions. The interval between each circular step structure can be equidistant or different according to the situation, and the angle of the slope can also be designed differently depending on the position to be focused. Although the circular step structure is used as an example here, it is not limited to Here, it can also be a symmetrical polygonal structure or a symmetrically distributed geometric three-dimensional structure. In addition, the incident surface 10 of the light source in this embodiment is the top surface of the light guide plate 1, and a plurality of LED lamps 21, 22 are arranged adjacent to the incident surface 10 of the light source, that is, the side of the light guide plate 1, preferably arranged in a circle ( Or other geometrically symmetrical arrangements are also acceptable), and only two LED lamps 21, 22 are used as an example in the figure. The above-mentioned LEDs are light-emitting diodes, including various types of light-emitting diodes that have been developed at present. In fact, LEDs with different color temperatures can also be installed according to requirements during use, so as to reduce the generation of colored shadows. Furthermore, an opening 13 is formed at the center of the operating light 100, and a height adjustment handle (preferably a sterilized handle) can be installed at this position in the future, and different heights can be adjusted during use.

Taking Figure 4 as an example, in actual use, the lighting ranges R1 and R2 may need to be adjusted depending on the situation due to the different sizes of surgical wounds. Various adjustment methods are listed below:

a. By adjusting the tilt of the LED, the angle of the incident light guide plate of the tilted LED after passing through the collimating mirror is changed so that it corresponds to the illumination range R1 and R2.

b. By using two different sets of collimating mirrors, incident the light guide plate at different converging angles, or adjusting the current of the corresponding LEDs to correspond to the illumination ranges R1 and R2.

c. By arranging the diffusion plate between the collimating mirror and the light guide plate, change and adjust the angle range of the incident light guide plate (for example, adjust from +/-4 degrees to +/-7 degrees).

The above-mentioned methods are only examples and not limited thereto. Any other methods that can be achieved by the prior art but not listed here and can achieve the above-mentioned effects still fall within the scope of protection of this case.

Regarding the production of the light guide plate 1, plastic can be used for one-time injection molding, or the light guide plate 1 can be divided into different blocks, and then made by multiple injection molding of plastic and then assembled, and its material can be common PMMA resin, COP and PC. Optical materials such as optical materials, or other materials suitable for making light guide plates, but these are all different manufacturing processes and materials used, and do not affect the protection scope of the overall structure of the operating light of the present invention.

Referring to FIG. 5 , it shows the second embodiment of the operating light of the present invention. As mentioned above, the operating light 100a can divide the light guide plate 1 into different parts first and then assemble it into a complete disc body. By matching the complete disc body with the corresponding light guide structure, optical elements 14 and LED lights 21, it can also be Achieve the aforementioned efficacy.

Referring to FIG. 6, it shows the third embodiment of the operating light of the present invention. Similarly, the operating light 100b can first divide the light guide plate 1 into different blocks, and each block is respectively equipped with a corresponding light guide structure, optical elements 14 and LED lights 21, and each block can be regarded as a module, and is composed of A plurality of modules constitute the surgical light 100b of this embodiment. The shape of the blocks can be designed in different situations. For example, the present embodiment is designed as strip blocks arranged radially, but it is not limited thereto. It can also be designed as other specific geometric figures and arranged symmetrically to the optical axis. The efficacy described can also be achieved.

The manufacturing process of the above-mentioned second and third embodiments is mainly considered to reduce the production cost. In fact, one-piece molding or multi-piece assembly may be adopted during production, and the size, size and arrangement of each block may be adjusted. It is not limited to the technical content disclosed in the present invention.

It can be seen from the above embodiments that the surgical lamp provided by the present invention is indeed of industrial utility value, but the above description is only a description of the preferred embodiment of the present invention, and those skilled in the art should be able to make according to the above description. Various other improvements, but these changes still belong to the spirit of the present invention and the scope of patents defined below.

Claims (9)

1. An operating light, characterized in that the operating light comprises: A light guide plate, the light guide plate is a plate body and defines a light source incident surface, a reflective surface and a light output surface, the axis passing through the center of the light guide plate on the reflective surface is defined as an optical axis, and the reflection of the light guide plate A plurality of reflective structures are formed on the surface, and the plurality of reflective structures are symmetrically distributed on the reflective surface with respect to the optical axis; A plurality of LED lamps are correspondingly arranged at predetermined positions adjacent to the incident surface of the light source of the light guide plate; The light emitted by the plurality of LED lamps enters and is guided in the same direction by the light guide plate, is reflected by each light-reflecting structure on the reflective surface, and is emitted from the light-emitting surface to focus on multiple focal points at different heights and form a depth of focus , so that an object at any height within the focal depth can obtain sufficient illumination brightness. 2 . The operating light according to claim 1 , wherein the plurality of reflective structures are geometric three-dimensional structures symmetrical to the distribution of the optical axes. 3. The operating light according to claim 1, wherein the plurality of reflective structures are stepped structures. 4. The operating light according to claim 1, wherein the plurality of LED lights are arranged on the light guide plate. 5 . The operating light according to claim 1 , wherein the plurality of LED lights are arranged on the side edge of the light guide plate. 5 . 6 . The operating light according to claim 1 , wherein the plurality of LED lights are located between the center of the light guide plate and the plurality of reflective structures. 7. The operating light according to claim 1, wherein an opening is defined in the center of the light guide plate. 8 . The operating light according to claim 1 , wherein a plurality of optical elements are respectively arranged between the incident surface of the light source and the plurality of LED lights. 9. The operating light according to claim 1, wherein the light guide plate is integrally formed or a plate body assembled from multiple pieces.

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