TWM480633U - Light coupler for LED - Google Patents

Description

Light-emitting diode coupling device 【0001】

The present invention relates to an optical device, and more particularly to a light-emitting diode coupling device.

【0002】

In the field of science, all hypotheses and inferences must be proved by obvious evidence. In the field of medical treatment, doctors often have to undergo multiple tests to determine the cause, but for diseases in the body cavity. In vitro tests such as blood and urine screening can only display indirect data for the doctor to refer to when determining the cause. If the cause is to be further clearly defined, direct visual inspection is still required. Therefore, medical treatment for internal human observation and detection is required. This is the case with an endoscope.

[0003]

Medical endoscopes appeared shortly after Edison invented the electric lights in the early 19th century, but because of the volume of the bulbs, it was not until the early twentieth century that the endoscopes that used small bulbs as the light source in the body were actually invented. The purpose of in vivo lighting.

[0004]

However, the organs of the human body are not protected by skin and fat, and it is easy to cause lesions or damage due to external temperature or collision impact. However, when the conventional xenon lamp is illuminated, it is usually accompanied by high temperature, so if the conventional xenon lamp is used As a light source for medical endoscopes, it is easy to cause unnecessary damage to the human body due to the high temperature generated.

[0005]

Furthermore, with the xenon lamp as the source of the endoscope, only the image of the white daylight source can be seen, and it is not easy to find the microvascular changes of the early tumor. Since cancer growth involves angiogenesis, light sources of different wavelengths are used, such as blue light, which can display red microvessels at the shallowest point, and green, showing deeper blood vessels, so that abnormal angiogenesis can be found using a special short-wavelength light source. Mucosal changes, early appearance; traditional endoscopes using xenon lamps as the light source, a filter is arranged at the source of the xenon lamp, and the light sources of different wavelengths are formed by filtering.

[0006]

Recently, medical endoscopes have gradually abandoned traditional xenon lamps, and instead used cold light sources such as light-emitting diodes as light sources, which not only enhance the life of the light source, but also have the characteristics of cold light, high illumination, and specific color temperature, thereby solving the problem of high temperature on the human body. The impact of the organ.

【0007】

Medical endoscopes prevent the light source from being used in the human body, because of the heat, which affects the interior of the human body. Therefore, the light source module is placed outside, and then the light is led to the human body through the optical fiber conduction system, so how to emit light The light exiting the diode source is coupled into the fiber with high efficiency optics, making it one of the most important issues today.

[0008]

In order to improve the light-receiving ability of the optical fiber, a design method of a Compound Parabolic Concentrator (CPC) is generally used. Although such a design can collect light from all angles of the light-emitting diode, when the light-emitting diode emits light, When the area is larger than or equal to the area of the optical fiber, the general CPC structure will leak light, resulting in a decrease in light extraction efficiency.

【0009】

The main object of the present invention is to provide a light coupling device having high light extraction efficiency.

[0010]

In order to achieve the above object, the present invention provides a light emitting diode coupling device, which comprises a light emitting diode light emitting module, a fiber conducting unit and a light coupling element, wherein the fiber conducting unit comprises a light introducing at one end. And a light-emitting outlet of the light-emitting diode, and the light-emitting element is disposed between the light-emitting diode light-emitting module and the fiber-optic conducting unit and includes a shape corresponding to the light-emitting diode light-emitting module The light entrance port, the light exit port corresponding to the shape and connected to the light introduction port of the fiber conducting unit, and the light channel connecting the light entrance port and the light exit port, the light channel includes a first light collecting segment, The first concentrating section includes a plurality of arc reflecting walls and a plurality of slant reflecting walls.

[0011]

As can be seen from the above description, the present invention has the following characteristics:

[0012]

1. By the arrangement of the light-coupled component, the light from the light-emitting diode light-emitting module is coupled and effectively enters the fiber-optic conduction unit and is emitted.

[0013]

2. The shape of the light-emitting diode light-emitting module and the fiber-optic conducting unit are respectively corresponding to the light-injecting port and the light-emitting port, so as to avoid the shape of the light-emitting diode light-emitting module and the fiber-optic conducting unit being connected. Different and there are light loss phenomena.

[0014]

3. By the arrangement of the arc-shaped reflective walls and the inclined reflective walls, the light utilization efficiency can be further improved, and the consumption of light when passing through the coupling element and being conducted to the fiber conducting unit can be reduced.

[0030]

10‧‧‧Lighting diode light-emitting module

[0031]

11‧‧‧Lighting diode

[0032]

20‧‧‧Fiber Conduction Unit

[0033]

21‧‧‧Light inlet

[0034]

22‧‧‧Light guide exit

[0035]

30‧‧‧coupled components

[0036]

31‧‧‧Into the light port

[0037]

32‧‧‧Light outlet

[0038]

33‧‧‧Light channel

[0039]

331‧‧‧First concentrating section

[0040]

331a‧‧‧Arc-shaped reflective wall

[0041]

331b‧‧‧ tilted reflective wall

[0042]

332‧‧‧Second concentrating section

[0043]

332a‧‧‧Circular reflective wall

[0044]

40‧‧‧Protection components

[0045]

50‧‧‧Fixed adjustment unit

[0015]

Figure 1 is a schematic perspective view of the present invention.

[0016]

FIG. 2 is an exploded perspective view of the three-dimensional structure of the present invention.

[0017]

Fig. 3 is a schematic cross-sectional view showing the first embodiment of the present invention.

[0018]

Fig. 4 is a cross-sectional structural view showing a second embodiment of the present invention.

[0019]

The detailed description and technical content of this new model are as follows:

[0020]

Please refer to FIG. 1 and FIG. 2 , the present invention provides a light-emitting diode coupling device, which comprises a light-emitting diode light-emitting module 10 , a fiber-optic transmission unit 20 and a light-coupled component 30 . The fiber optic transmission unit 20 includes a light introduction port 21 at one end and a light guide port 22 opposite to the light introduction port 21. The light coupling element 30 is disposed on the LED output module 10 and the fiber optic transmission unit. Between the two, and including a light-injecting port 31 corresponding to the shape and connected to the light-emitting diode light-emitting module 10, a light-emitting port 32 corresponding to the shape and connected to the light-introducing port 21 of the fiber-optic conducting unit 20, and a connection The light tunnel 33 includes a first light collecting section 331, and the first light collecting section 331 includes a plurality of arc reflecting wall surface 331a and a plurality of inclined reflecting wall surfaces 331b; The light-emitting diode coupling device further includes a fixed adjustment unit 50 disposed outside the light-coupled component 30 and a protection component 40 disposed between the light-coupler component 30 and the fiber-optic transmission unit 20, By the fixed adjustment unit 50 Providing that the light-guiding element 30 is fixed on the light-emitting diode light-emitting module 10 on the one hand, and the focus adjustment is performed on the other hand when the light-emitting diode coupling device is used, and the protection element 40 provides the light-coupled light. The component 30 is further protected and at the same time has a dust-proof function.

[0021]

Continuing to refer to FIG. 2 and FIG. 3, in the present invention, the shape of the light-emitting diode light-emitting module 10 is a rectangle composed of a plurality of light-emitting diodes 11 arranged, and the fiber-optic transmission unit 20 The shape of the light-injecting element 30 of the light-emitting diode 30 is corresponding to the shape of the light-emitting port 30 when the light from the light-emitting diode output module 10 enters the light-guiding element 30. The rectangular shape of the polar light-emitting module 10 is similar to that of the optical fiber-conducting unit 20, and the shape of the light-emitting port 32 of the light-guiding element 30 is also circular. .

[0022]

It is further explained that in order to increase the light extraction rate of the light-emitting diode coupling device and reduce the loss rate of light in conduction, it is necessary to specially design the structure of the light channel 33. In the first embodiment of the present invention, The inclined reflective wall surfaces 331b in the light tunnel 33 are four semi-circular slopes, and the diameters of the four semi-circular slopes correspond to the side lengths of the rectangular light entrance 31, and the semicircle The slanting surface is inclined from the light entrance opening 31 toward the light exit opening 32, so that the diameter of the light entrance opening 31 is smaller than the diameter of the light exit opening 32; and the arc reflecting wall surface 331a also has four, four The arc-shaped reflecting wall surface 331a extends from the four apexes of the rectangular light-injecting opening 31 toward the light-emitting opening 32, thereby separating the inclined reflecting wall surfaces 331b.

[0023]

In addition, with reference to FIG. 4, the present invention further provides a second embodiment, the optical channel 33 further includes a second concentrating section 332 disposed between the first concentrating section 331 and the light exit opening 32, and The second concentrating section 332 is formed by an annular reflecting wall surface 332a; and the second concentrating section 332 is disposed to meet various requirements of different designs.

[0024]

In summary, the present invention has the following characteristics:

[0025]

1. By the arrangement of the light-coupled component, light from the light-emitting diode light-emitting module is coupled into the fiber-optic conduction unit and emitted.

[0026]

2. By the arrangement of the arc-shaped reflective walls and the inclined reflective walls, the light utilization efficiency can be further improved, and the consumption of light when passing through the coupling element and being conducted to the fiber conducting unit can be reduced.

[0027]

3. The fixed adjustment unit provides the user with the adjustment of the focal length.

[0028]

4. By the setting of the protection component, the dustproof effect can be achieved, and the external dirty dust can be prevented from entering the light transmission.

[0029]

5. The light-emitting diode coupling device can conform to the shape of the general-purpose light-emitting diode light-emitting module and the optical fiber by the arrangement of the light-injecting port and the shape of the light-emitting port, thereby reducing the light dissipation. loss.

10‧‧‧Lighting diode light-emitting module

11‧‧‧Lighting diode

20‧‧‧Fiber Conduction Unit

21‧‧‧Light inlet

22‧‧‧Light guide exit

30‧‧‧coupled components

31‧‧‧Into the light port

32‧‧‧Light outlet

33‧‧‧Light channel

331‧‧‧First concentrating section

331a‧‧‧Arc-shaped reflective wall

331b‧‧‧ tilted reflective wall

40‧‧‧Protection components

50‧‧‧Fixed adjustment unit

Claims (8)

[Item 1]
A light emitting diode coupling device comprising:
a light emitting diode light emitting module;
a fiber conducting unit comprising a light introducing port at one end and a light guiding outlet opposite to the light introducing port; and a coupling disposed between the light emitting diode emitting module and the fiber conducting unit An optical component, the light-receiving component includes a light-injecting port corresponding to the light-emitting diode light-emitting module, a light-emitting port corresponding to the shape and connected to the light-introducing port of the fiber-optic conducting unit, and a light connecting port The optical port of the optical port and the light exiting port, the optical channel includes a first concentrating section, and the first concentrating section comprises a plurality of arc reflecting walls and a plurality of inclined reflecting walls. [Item 2]
The light-emitting diode light-emitting device according to claim 1, wherein the light-emitting diode light-emitting module is a rectangular array formed by combining a plurality of light-emitting diodes, and the light-inducing element is inserted. The shape of the optical port is a rectangle corresponding to the light emitting diode module. [Item 3]
The light-emitting diode coupling device of claim 2, wherein the inclined reflective walls are four semi-circular slopes, and the diameters of the four semi-circular slopes correspond to the edges of the rectangular entrances. Long, and respectively extending from the light entrance port toward the light exit port, the arc-shaped reflective wall surfaces having four and respectively disposed between the four semi-circular slopes, and respectively from the four vertices of the light entrance port Extending in the direction of the light exit. [Item 4]
The illuminating diode coupling device of claim 3, wherein the optical channel further comprises a second concentrating segment disposed between the first concentrating segment and the illuminating port, the second concentrating The light segment is formed by an annular reflective wall. [Item 5]
The light-emitting diode coupling device of claim 1, wherein the light-injecting port of the fiber-optic conducting unit has a circular shape, and the light-emitting opening of the light-coupled element has a shape corresponding to a light-introducing opening. shape. [Item 6]
The light-emitting diode coupling device of claim 1, wherein an inner diameter of the optical passage is gradually expanded from the optical entrance to the optical outlet, so that a diameter of the optical entrance is smaller than a diameter of the optical outlet. . [Item 7]
The light-emitting diode coupling device of claim 1, further comprising a protection element disposed between the light-emitting port of the light-coupler element and the light-introducing port of the fiber-optic conducting unit. [Item 8]
The light-emitting diode coupling device of claim 1, further comprising a fixed adjustment unit disposed outside the light-coupled component.