TW201420958A - Illumination range electrical adjusting structure - Google Patents

Abstract

An illumination range electrical adjusting structure includes a substrate, a first illumination module and a second illumination module. The first illumination module includes a plurality of first light guide plates, a first LED light and a first optical component. The second illumination module includes a plurality of second light guide plates, a second LED light and a second optical component. Incident light rays of the first light guide plate and the second light guide plate are focused, after they are guided out by the first light guide plate and the second light guide plate, at a plurality of focus points of different heights for forming a focal depth. By adjusting currents provided to the first LED light and a second LED light into a predetermined ratio, the brightness in overall illumination range at any height within the focal depth is controlled to maintain consistent .

Description

Lighting range electronic control adjustment structure

The present invention relates to an adjustment mechanism applied to medical lighting fixtures, and more particularly to an electronic control adjustment structure for an illumination range applied to medical lighting fixtures.

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. Overall, in view of the various temporary conditions that may occur during the operation of medical procedures, medical lighting devices play an important role, and the aforementioned medical lighting devices lack an effective illumination brightness, concentration range, and depth of focus of the light source. The adjustment mechanism is sufficient to meet the different lighting needs during the operation, and can be quickly and accurately adjusted.

However, the design of the conventional medical lighting device lacks an effective adjustment mechanism for the illumination brightness, the concentration range, and the depth of focus of the light source, which is sufficient for the need for different lighting requirements during the operation, and can be quickly and accurately adjusted instantly. Even if the focus of the light is changed by means of setting a mechanical structure or the like, it is inevitably caused by the disadvantage that the illumination brightness is lowered and the brightness is uneven.

Therefore, an object of the present invention is to provide an illumination range electronic control adjustment structure, comprising: a base body; a first illumination module is annularly distributed on one side of the base body, and the first illumination module includes a plurality of a light guide plate, each of the first light guide plates defines a first light incident surface and a first light emitting surface, and at least one first LED light and corresponding at least one first optical component are disposed adjacent to the first light incident surface The first optical component can cause the light of the first LED lamp to be incident on the first light incident surface and emitted from the first light emitting surface in the same direction; a second lighting module is annularly distributed on the The second illumination module includes a plurality of second light guide plates, and a side edge of each of the second light guide plates defines a second light incident surface and a second light exit surface adjacent to the second light incident surface. Providing at least one second LED lamp and corresponding at least one second optical component, wherein the second optical component can cause the light of the second LED lamp to be incident on the second light incident surface in the same direction and by the first Two light emitting surfaces; wherein the light incident on the first light guide plate After being guided through the first light guide plate, focusing on a plurality of focal points of different heights and forming a depth of focus, and the light incident on the second light guide plate is diverged after being led out through the second light guide plate, and is Adjusting the current supplied to the first LED lamp and the second LED lamp to a predetermined ratio to control the brightness of the overall illumination range at any height within the depth of focus to be consistent.

Preferably, the plurality of first light guide plates distributed on one surface of the base body have a rectangular shape.

Preferably, the plurality of second light guide plates distributed on one side of the substrate have a wedge shape.

Preferably, the length of the plurality of second light guide plates is shorter than the plurality of first light guide plates.

Preferably, the plurality of second light guide plates of the first illumination module are staggered between the plurality of first light guide plates of the first illumination module.

Preferably, the first light-emitting surface of the plurality of first light guide plates is further disposed with a light collecting structure.

Preferably, the second light-emitting surface of the plurality of second light guide plates is further disposed with an astigmatism structure.

Preferably, the illumination range electronic control adjustment structure further comprises a height adjustment mechanism for adjusting a focus position of the light emitted by the first illumination module and the second illumination module and an overall illumination range thereof.

Preferably, the light emitted by the second illumination module is distributed outside the overall illumination range.

Preferably, the illumination range electronically controlled adjustment structure is applied to a medical illumination device.

According to the technical means adopted by the present invention, in addition to being applicable to medical lighting devices such as surgical lamps and the like, which are highly demanded for illumination, the medical device can be adjusted at any time according to the needs of different parts and heights of the patient during the medical operation. The light range achieves the effect of effectively controlling the illumination, the concentrating range, and the depth of focus, and can be adjusted by current control, and simultaneously illuminate the overall illumination range at any height within the depth of focus. The degree is consistent. In the improvement of the conventional technology, the illumination range is adjusted only by the mechanical focusing method, and the illuminance is inversely reduced. If the present invention uses the illumination range electronic control adjustment structure, the illumination can be kept relatively stable without the disadvantages described by the prior art.

First embodiment

Referring to the first figure, there is shown a bottom view of a first embodiment of the illumination range electronically controlled adjustment structure of the present invention. The illumination range electronic control adjustment structure 100 mainly comprises: a base body 1, a first illumination module 2, a second illumination module 3 and a height adjustment mechanism 4, and the illumination range electronic control adjustment structure 100 is mainly applicable to medical illumination. The device, such as this embodiment, is a surgical light.

The first lighting module 2 is annularly distributed on one side of the substrate 1. The first lighting module 2 includes a plurality of first light guiding plates 21, and each of the first light guiding plates 21 defines a first light incident surface 210 and a first light emitting surface. The surface 211 is disposed adjacent to the first light incident surface 210 with at least one first LED lamp 22 and corresponding at least one first optical component 23, and the light of the first LED lamp 22 can be made by the first optical component 23 The direction is incident on the first light incident surface 210 and is emitted by the first light exit surface 211.

The second illumination module 3 is annularly distributed on one side of the substrate 1. The second illumination module 3 includes a plurality of second light guide plates 31. The side edges of each of the second light guide plates 31 define a second light incident surface 310 and a The second light-emitting surface 311 (such as the first), adjacent to the second light-incident surface 310 is provided with at least one second LED lamp 32 and corresponding at least one second optical element 33, and the second optical element 33 can make the second The light of the LED lamp 32 is incident on the second light incident surface 310 in the same direction and is emitted from the second light exit surface 311.

The first light guide plate 21 and the second light guide plate 31 may be made of a common PMMA resin, an optical material such as COP and PC, or other materials suitable for fabricating the light guide plate. The first optical element 23 and the second optical element 33 are collimators, which can converge the large divergence angle light emitted by the LED lamp into a suitable small divergence opening angle (near parallel).

In this embodiment, the plurality of second light guide plates 31 of the second illumination module 3 are alternately distributed between the plurality of first light guide plates 21 of the first illumination module 2, and the shape of the first light guide plate 21 is rectangular. The second light guide plate 31 has a wedge shape, and the second light guide plate 31 has a shorter length than the first light guide plate 21.

Referring to the second to third figures, the illumination range electronic control adjustment structure 100 can be provided with a height adjustment mechanism 4, and each of the first light guide plate 21 and the second light guide plate 31 is connected to the height adjustment mechanism 4 (similar to the opening of the umbrella frame) The angles of the first light guide plate 21 and the second light guide plate 31 are changed to adjust the focus position of the light emitted by the first illumination module 2 and the second illumination module 3 and the overall illumination range thereof. As shown in the third figure, by changing the inclination angles of the first light guide plate 21 and the second light guide plate 31, the illumination range at the same height position is further expanded. However, this kind of focusing by the mechanism design is still not perfect, so it needs to be further improved by combining the technical means of electronically controlled focusing.

Referring to the fourth figure, it is a schematic diagram showing the depth of focus of the electronic control adjustment structure of the illumination range of the present invention. As shown in the figure, the light rays incident on the first light guide plate 21 and the second light guide plate 31 are focused on a plurality of focus points F1, F2, and F3 at different heights after being led out through the first light guide plate 21 and the second light guide plate 31. F4 forms a depth D1, and the light incident on the second light guide plate 31 is diverged after being led out through the second light guide plate 31, and can be supplied to the first illumination module 2 and the second illumination module 3 by adjustment. The current is at a predetermined ratio, and the brightness of the overall illumination range at any height within the depth of focus should be controlled to maintain one To.

Second embodiment

Referring to Figures 5A-5B, a schematic diagram of the first lighting module is shown. In this embodiment, the illumination range electronic control adjustment structure 100a is similar to the previous embodiment, except that the first light guide plate 21 of the first illumination module 2 is more correspondingly disposed on the first light-emitting surface 211. The light structure 24, the concentrating structure 24 can be any structure that can help to condense light, such as a transparent convex body like a convex lens (as shown in FIG. 5B), and its function can be used to help the first lighting module 2 besides the shaft. In addition to concentrating light, it can be concentrated in its tangential direction. Referring to Figure 5A, a schematic diagram of the second lighting module is shown. Similarly, the second light guide plate 31 of the second illumination module 3 is further disposed on the second light-emitting surface 311 thereof with an astigmatism structure 34. The astigmatism structure 34 can be any structure that can help astigmatism, such as a transparent concave body like a concave lens ( The function of the fifth B) can be used to help the second illumination module 3 to astigmatize tangentially in addition to axial astigmatism. The illuminance distribution formed by the condensing of the first lighting module 2 and the astigmatism of the second lighting module 3 is adjusted to a predetermined ratio by the current supplied to the first lighting module 2 and the second lighting module 3, The brightness is controlled to maintain the brightness of the overall illumination range at any height within the depth of focus.

Referring to the seventh figure, it is an illuminance Gaussian distribution diagram showing the electronically controlled adjustment structure of the illumination range of the present invention. As shown in the figure, D10Min supplies 100% illumination distribution to the first lighting module (for example, the illumination range is 170 mm when the center maximum illumination intensity is 10%); D10Max supplies 100% of the second lighting module. Illumination distribution (lower intensity in the center, but larger coverage area). If you want to not overly affect the lighting In the case of degree, when the diameter of the D10 spot is changed, it can be achieved by changing the power supply ratio of the first lighting module and the second lighting module. For example, at 10% of the maximum illumination intensity of the center, when the first illumination module supplies 100% of power, the diameter of the spot D10 is 170 mm (minimum), and the spot D10 can be gradually increased by gradually adjusting the power supply ratio of the two. The diameter of the first lighting module is adjusted to be 85% (8. When the power supply is 70% and the power supply of the second lighting module is 60% (0.7D10Max+0.6D10Min), the illumination range is 270 mm; and the power supply for adjusting the first lighting module is 50% and the second lighting module The power supply is 100% (0.5D10Max+1D10Min), and its illumination range can reach 320 mm in diameter. By adjusting this way, the illumination range can be increased without greatly affecting the illumination. Specifically, 11 first light guides require 22 LED lights, and 11 second light guides require 22 LEDs, for a total of 44 LEDs. When the D10 spot is doubled, the brightness is approximately 1/2. To maintain the brightness, the second light guide requires 66 LEDs (or the same amount but a power increase of 3 times). As far as the prior art is concerned, if the illumination range is adjusted only by the mechanical focusing method, the disadvantage is that when the D10 spot is adjusted to 2 times the size, the illumination will be reduced to 1/4 (in inverse proportion to the illumination range area). If the illumination range electronically controlled structure is used as in the present embodiment, the illuminance can be kept relatively stable without being dropped too much. However, the human body cannot withstand the maximum illumination of 160,000 Lux. If the large area is irradiated, the exposed part will be damaged. Therefore, when the D10 spot is enlarged, the illumination will still decrease slightly, and the number of LEDs and the power increase will be reduced. Therefore, by adjusting the first lighting module and the second lighting module in this way (adjusting the current to make it dimensional With a certain ratio), the effect of brightness average over the depth of focus is achieved, and the effect of shadowless illumination is still maintained.

The structure described in the above is only a preferred embodiment, wherein the positions and materials of the various components can be varied according to actual needs and the skill of the time. For example, the light guide plate can be formed by plastic injection molding or plastic. It is made by multiple injection molding and recombination, and its material can be common PMMA resin, optical materials such as COP and PC, or other materials suitable for making light guide plates. However, these are used in different processes and materials. It does not affect the overall scope of protection of the present invention. The structure and method of the present invention are suitable for application to a medical lighting device with high illumination requirements such as a surgical lamp, and the method can be controlled at any time according to different parts and heights of the patient during the medical operation. The brightness of the overall illumination range at any height in the depth is consistent. None of this method and its structure are found in any prior art in the field and should be patentable.

It can be seen from the above embodiments that the electronic control adjustment structure of the illumination range provided by the present invention has industrial utilization value, but the above description is only for the preferred embodiment of the present invention, and those skilled in the art can Other modifications are possible in the above description, but such modifications are still within the spirit of the invention and the scope of the invention as defined below.

100‧‧‧Lighting range electronic control adjustment structure

1‧‧‧ base

2‧‧‧First lighting module

21‧‧‧First light guide

210‧‧‧First light entry

211‧‧‧The first glazing

22‧‧‧First LED light

23‧‧‧First optical component

24‧‧‧ Concentrating structure

3‧‧‧Second lighting module

31‧‧‧Second light guide

310‧‧‧Second entrance

311‧‧‧second glazing

32‧‧‧second LED light

33‧‧‧Second optical component

34‧‧‧ astigmatism

4‧‧‧ Height adjustment mechanism

The first figure shows the underside view of the electronic control adjustment structure of the illumination range of the present invention; the second to third figures show the visual intention of adjusting the illumination range by the height adjustment mechanism; and the fourth figure shows the formation of the electronic control adjustment structure of the illumination range of the present invention. A schematic diagram of the depth of focus; a fifth A to five B diagram showing a schematic diagram of the first lighting module; and a sixth A to six B diagram showing a schematic diagram of the second lighting module; The seventh figure shows the illuminance Gaussian distribution diagram of the electronic control adjustment structure of the illumination range of the present invention.

100‧‧‧Lighting range electronic control adjustment structure

1‧‧‧ base

2‧‧‧First lighting module

21‧‧‧First light guide

210‧‧‧First light entry

211‧‧‧The first glazing

22‧‧‧First LED light

23‧‧‧First optical component

3‧‧‧Second lighting module

31‧‧‧Second light guide

310‧‧‧Second entrance

311‧‧‧second glazing

32‧‧‧second LED light

33‧‧‧Second optical component

4‧‧‧ Height adjustment mechanism

Claims (8)

An illumination range electronic control adjustment structure includes: a base body; a first illumination module is annularly distributed on one side of the base body, the first illumination module includes a plurality of first light guide plates, and each of the first light guide plates defines a first light incident surface and a first light emitting surface are disposed, and at least one first LED lamp and corresponding at least one first optical component are disposed adjacent to the first light incident surface, wherein the first optical component can The light of the first LED lamp is incident on the first light incident surface and is emitted from the first light emitting surface; a second lighting module is annularly distributed on one side of the substrate, and the second lighting module includes a plurality of second light guide plates, wherein a side edge of each of the second light guide plates defines a second light incident surface and a second light exit surface, and at least one second LED light and corresponding portion are disposed adjacent to the second light incident surface At least one second optical component, wherein the light of the second LED lamp is incident on the second light incident surface in the same direction and is emitted by the second light emitting surface; wherein the first light is incident Light from the light guide plate after being exported through the first light guide plate Focusing on a plurality of focal points of different heights and forming a depth of focus, and the light incident on the second light guide plate is diverged after being led out through the second light guide plate, and is supplied to the first LED lamp by adjusting The current of the two LED lamps is at a predetermined ratio to control the brightness of the overall illumination range at any height within the depth of focus to be consistent. The illumination range electronic control adjustment structure according to claim 1, wherein the plurality of first light guide plates distributed on one surface of the base body have a rectangular shape. The illumination range electronically controlled adjustment structure according to claim 1, wherein the plurality of second light guide plates distributed on one surface of the base body have a wedge shape. The illumination range electronic control adjustment structure of claim 1, wherein the plurality of second light guide plates are shorter in length than the plurality of first light guide plates. The illuminating range electronic control adjustment structure of the first aspect of the invention, wherein the plurality of second light guide plates of the second lighting module are staggered between the plurality of first light guide plates of the first lighting module . The illumination range electronic control adjustment structure according to the first aspect of the invention, wherein the first light-emitting surface of the plurality of first light guide plates is further provided with a light collecting structure. The illumination range electronic control adjustment structure of claim 1, wherein the second light-emitting surface of the plurality of second light guide plates is further provided with an astigmatism structure. The electronic control adjustment structure of the illumination range as described in claim 1 further includes a height adjustment mechanism for adjusting a focus position of the light emitted by the first illumination module and the second illumination module and overall illumination thereof range.