TW201350749A - Surgical light - Google Patents

Abstract

The present invention discloses a surgical light, including a light guide plate, which is a plate body defining a light incident surface, a reflection surface, and a light emitting surface, in which an axis that is on the reflection surface and passes through a center of the light guide plate is defined as an optical axis, a plurality of reflection structures being formed on the reflection surface of the light guide plate, and the plurality of reflection structures being distributed on the reflection surface to be symmetric with respect to the optical axis; a plurality of LED lights correspondingly arranged at predetermined positions close to the light incident surface of the light guide plate. Light emitting from the plurality of LED lights enters the light guide plate and is guided in the same direction, and is subjected to reflection of each of the reflection structures on the reflection surface to be projected from the light emitting surface to focus at a plurality of focal points at different heights to form a depth of focus, so that an object within the depth of focus can receive sufficient luminous intensity.

Description

Surgical light (1)

The present invention relates to a medical lighting fixture, and more particularly to a surgical light that directs light with a light guide and focuses on different locations.

Surgical lamps are very important medical equipment during the operation. It is very important to provide perfect lighting functions for general surgery. In addition to allowing the doctor to see the environment surrounding the surgery, including the surgical instruments and position, the monitor, and the internal conditions of the patient, including the clarity and color between the blood vessels and organs, etc., can avoid serious damage caused by unclear vision. Medical negligence. Surgical lamps used in medical procedures need to have the characteristics of forming a shadowless area, which is different from a general lighting device. In the design of the surgical lamp, due to the adoption of a single light source, it is easy to cause problems such as insufficient illumination, which causes the doctor to have unnecessary troubles and problems during the operation, such as unclear vision of the surgical position, incorrect position of the surgical instrument, or Inconvenient, the need to constantly adjust the angle of the monitor screen and so on, have caused great trouble to the operators. Others also have a multi-light source with the arrangement of the mirror, the reflective layer and the light-transmitting mirror to concentrate the light source in a single focus position. However, this method also makes the surgical lamp have insufficient depth of focus, and often needs to adjust the height position of the surgical light during use. It is also quite inconvenient.

However, conventional surgical lamps have the main disadvantage of focusing only on a single height position, in addition to directing light in a multi-source direct manner. To get the object to be illuminated With sufficient illumination, it is necessary to manually adjust the surgical 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, wherein the light guide plate is a plate body and defines a light source incident surface, a reflective surface and a light exit surface, and the reflective surface passes through the light guide surface. The axis of the center of the light guide 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 symmetrically distributed on the reflective surface; the plurality of LED lights correspond to Provided at a predetermined position of the light source incident surface adjacent to the light guide plate; wherein the light emitted by the plurality of LED lights enters from the light guide plate and is guided in the same direction, and is reflected by the reflective structures on the reflective surface and is emitted from the light exit surface to respectively Focusing on a plurality of focal points of different heights and forming a depth of focus, so that an object at any height within the depth of focus can obtain sufficient illumination brightness.

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

Preferably, wherein the plurality of reflective structures are stepped structures.

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

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

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

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

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

Preferably, the light guide plate is integrally formed or assembled by a plurality of pieces.

The illuminated object is placed on the surgical light via the technical means employed by the present invention A sufficient illumination brightness can be obtained in the range of the depth of focus formed, and the cost reduction effect can be achieved by fabricating the light guide plate in a plurality of assembling manners.

The invention discloses a surgical lamp 100, which comprises: a light guide plate 1 which is a plate body and defines a light source incident surface 10, a reflective surface 111 and a light exit surface 112, and passes through the light guide plate on the reflective surface 111. The axis of the center of 1 is defined as an optical axis OX, a plurality of reflective structures 12 are formed on the reflective surface 111 of the light guide plate 1, and a plurality of reflective structures 12 are symmetrically distributed on the reflective surface 10 with respect to the optical axis OX; a plurality of LED lights 21, 22, correspondingly disposed at a predetermined position of the light source incident surface 10 adjacent to 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 respectively, the optical element 14, Preferably, 15 is a collimator that converges the large divergent angles of light emitted by the LED lamps 21, 22 into a suitable small divergence angle (nearly parallel). The light emitted by the plurality of LED lamps 21 and 22 enters from the light incident surface of the light guide plate and is guided in the same direction, and is reflected by the respective reflective structures 12 on the reflective surface 111 and emitted by the light exit surface 112 to respectively focus on a plurality of focal points of different heights. F1, F2, F3, and F4 form a focal depth D. This area is defined as a focusable area A so that an object at any height within the depth D can obtain sufficient illumination.

In this embodiment, the plurality of reflective structures 12 are circular structures formed by the center of the reflective surface 111 of the surgical lamp 100, and each of the circular steps has a predetermined interval, depth, and slope angle. So that the imported light can be focused on different locations. The spacing between the respective circular step structures may be equidistant or differently designed according to the situation. The angle of the bevel may also be different depending on the position to be focused. Here, the circular structure is taken as an example, but not limited thereto. Symmetrical polygonal structure Or a geometrically distributed three-dimensional structure. In addition, the light source incident surface 10 in the embodiment is the top surface of the light guide plate 1, and the plurality of LED lights 21 and 22 are disposed adjacent to the light source incident surface 10, that is, the side surface of the light guide plate 1, preferably arranged in a ring array. (Or other geometrically symmetrical arrangement can also be used), and only two LED lights 21, 22 are exemplified in the figure. The LED is a light-emitting diode, including various types of light-emitting diodes that have been developed at present, and LEDs of different color temperatures can be installed in actual use to reduce the generation of colored shadows. Furthermore, an opening 13 is formed in the center of the surgical lamp 100. In the future, a height adjustment handle (preferably a sterilized handle) can be installed at this position, and different heights can be adjusted during use.

Taking the fourth figure as an example, in actual use, the illumination range R1 and R2 may be adjusted depending on the size of the wound in the operation. Several adjustment methods are listed below:

a. By adjusting the tilt of the LED, the angle of the incident light guide plate after tilting the LED through the collimating mirror is changed to correspond to the illumination ranges R1 and R2.

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

c. By arranging the diffuser plate between the collimating mirror and the light guide plate, changing the angular range of adjusting the incident light guide plate (for example, from +/- 4 degrees to +/- 7 degrees).

The above manners are merely illustrative, and are not limited thereto. Any other manner that can be achieved by the prior art, which is not enumerated and can achieve the above effects, is still within the scope of protection of the present invention.

Regarding the manufacture of the light guide plate 1, plastic injection molding can be used or the light guide plate 1 can be divided into different blocks, and the plastic can be produced by multiple injection molding and combined, and the material can be common PMMA resin, COP and PC. Optical materials, or other materials suitable for making light guides, however, these are different processes and materials. The use of materials does not affect the protection scope of the overall structure of the surgical lamp of the present invention.

Referring to Figure 5, there is shown a second embodiment of the surgical light of the present invention. As described above, the surgical light 100a can first divide the light guide plate 1 into different blocks and then assemble into a complete disk body, and the complete disk body can be matched with the corresponding light guiding structure, the optical component 14 and the LED lamp 21. Achieve the aforementioned efficacy.

Referring to the sixth drawing, a third embodiment of the surgical light of the present invention is shown. Similarly, the surgical lamp 100b can first divide the light guide plate 1 into different blocks, and each block is respectively configured with a corresponding light guiding structure, an optical component 14 and an LED lamp 21, and each block can be regarded as a module, and A plurality of modules constitute the surgical light 100b of the present embodiment. The shape of the block may be designed according to different situations. For example, the embodiment is a strip-shaped block designed to be radially arranged, but it is not limited thereto, and may be designed as other specific geometric figures and arranged in a manner symmetric to the optical axis. The efficacy described can also be achieved.

The processes of the second and third embodiments are mainly considered to reduce the manufacturing cost, and in fact, in the production, the integrated forming or multi-assembly combination can be adopted as appropriate, and the size, size and arrangement of each block are adjusted. It is not limited to the one disclosed in the present specification.

It can be seen from the above embodiments that the surgical light provided by the present invention has industrial use value, but the above description is only for the preferred embodiment of the present invention, and those skilled in the art can according to the above description. Various other modifications are possible, but such changes are still within the spirit of the invention and the scope of the invention as defined below.

100, 100a, 100b‧‧‧ surgical lights

1‧‧‧Light guide plate

10‧‧‧Light source entrance surface

111‧‧‧reflecting surface

112‧‧‧Glossy

12‧‧‧Reflective structure

13‧‧‧Opening

14, 15‧‧‧ Optical components

21, 22‧‧‧ LED lights

A‧‧‧ Focusable area

D‧‧‧Deep depth

F1, F2, F3, F4‧‧‧ focus

R1, R2‧‧‧ illumination range

OX‧‧‧ optical axis

The first figure shows a side view of a surgical lamp according to a first embodiment of the present invention; the second figure shows a partial cross-sectional view of the surgical lamp of the present invention; The third drawing shows a partial cross-sectional view of another angle of the second figure; the fourth figure shows a schematic view of the light coverage range of the surgical lamp of the present invention; and the fifth figure shows the second embodiment of the surgical light of the present invention; A third embodiment of the surgical light of the present invention is shown.

100‧‧‧Surgical light

1‧‧‧Light guide plate

10‧‧‧Light source entrance surface

111‧‧‧reflecting surface

112‧‧‧Glossy

12‧‧‧Reflective structure

13‧‧‧Opening

14, 15‧‧‧ Optical components

21, 22‧‧‧ LED lights

A‧‧‧ Focusable area

D‧‧‧Deep depth

F1, F2, F3, F4‧‧‧ focus

OX‧‧‧ optical axis

Claims (9)

A surgical lamp includes: a light guide plate, wherein the light guide plate is a plate body and defines a light source incident surface, a reflective surface and a light exiting surface, and an axis of the center of the light guide plate is defined as an optical axis on the reflective surface a plurality of reflective structures are formed on the reflective surface of the light guide plate, and the plurality of reflective structures are symmetrically distributed on the reflective surface of the optical axis; and the plurality of LED lights are correspondingly disposed on the incident surface of the light source adjacent to the light guide plate. a predetermined position; wherein the light emitted by the plurality of LED lamps enters from the light guide plate and is guided in the same direction, is reflected by the reflective structures on the reflective surface, and is emitted from the light exit surface to respectively focus on a plurality of focal points of different heights and form a The depth of focus is such that an object at any height within the depth of focus can achieve sufficient illumination. The surgical light of claim 1, wherein the plurality of reflective structures are geometric three-dimensional structures symmetrically distributed by the optical axis. The surgical light of claim 1, wherein the plurality of reflective structures are stepped structures. The surgical light of claim 1, wherein the plurality of LED lights are disposed on the light guide plate. The surgical light of claim 1, wherein the plurality of LED lights are disposed on a side edge of the light guide plate. The surgical lamp of claim 1, wherein the plurality of LED lamps are interposed between a center of the light guide plate and the plurality of reflective structures. The surgical light of claim 1, wherein the light guide plate has an opening in a center thereof. The surgical light of claim 1, wherein a plurality of optical elements are disposed between the incident surface of the light source and the plurality of LED lamps. The surgical light of claim 1, wherein the light guide plate is integrally formed or assembled from a plurality of pieces.