TWM572199U - Endoscope image capturing module with fluorescence coated LED light source - Google Patents

Abstract

An endoscope image capturing module having a fluorescent coated LED light source, comprising: a lens tube defining one end thereof as a front end; an image capturing component having an image sensor and a lens disposed on the lens The image capturing assembly further has a partition wall; a flexible circuit board having an elongated body and an annular plate received in the lens tube, the flexible circuit board being pre-bent and the ring The plate of the plate faces forward, and the annular plate is located between the partition wall and the inner wall of the lens tube, and the elongated plate body is disposed along the axial direction of the lens tube; the plurality of light emitting diodes (LEDs) , disposed on the front surface of the annular plate, between the partition wall and the inner wall of the lens tube; and a fluorescent powder glue disposed in the continuous strip shape on the annular plate and covering the plurality of light-emitting lights Polar body.

Description

Endoscope image capturing module with fluorescent coated LED light source

This creation is related to endoscopes, especially an endoscope acquisition module with a fluorescent coated LED source.

China Patent No. M556136 discloses that a plurality of self-illuminating members are disposed on the sensor of the image capturing device of the endoscope, and the self-illuminating members may be fluorescent paint or LED (light emitting diode). . Such a light source using LED or fluorescent paint has insufficient brightness to meet the needs of the user. This is because in the field of endoscopes, the endoscope tube at the head end is small in volume, and in the case where the volume and the set position are limited, usually only small-sized and low-intensity LEDs can be placed, so that It will produce the disadvantage of insufficient brightness.

In the prior art, the blue LED is disposed on the circuit board by a Chip On Board (COB) process, and is further covered with a fluorescent substance, so that the blue light and the fluorescent substance emitted by the blue LED are excited. After the yellow light is mixed, white light can be obtained, which is a known technique. If the COB process can be applied to the installation of the LED light source of the endoscope, a higher brightness source should be obtained. However, at present, the arrangement of the light source in the endoscope does not use the technology of the COB process. Therefore, how to set the LED light source on the circuit board in a COB process, and then securely set the circuit board in the endoscope, and A good mix of structures has become the technical focus of the patent application in this case.

The main purpose of the present invention is to provide an endoscope image capturing module with a fluorescent coated LED light source, which can use the LED light source set by the COB process and cooperate with the fluorescent powder glue to generate a white light source with sufficient brightness.

A further object of the present invention is to provide an endoscope image capturing module with a fluorescent coated LED light source, which is extremely convenient to assemble an LED light source, and can securely fix the LED light source in the lens tube of the endoscope.

According to the present invention, an endoscope image capturing module with a fluorescent coated LED light source includes: a lens tube defining one end thereof as a front end; and an image capturing component having an image sensing And a lens disposed in the lens tube; the image capturing assembly further has a partition wall, the partition wall is tubular around the lens and radially spaced apart from the lens tube wall by a predetermined distance, the image sensor The flexible circuit board has an elongated body and an annular plate, and is accommodated in the lens tube. The flexible circuit board is pre-bent to make the annular plate The plate is facing forward, and the annular plate is located between the partition wall and the inner wall of the lens tube, and the elongated plate body is disposed along the axial direction of the lens tube; the plurality of light emitting diodes (LEDs) are disposed at The annular plate faces the front plate surface and is located between the partition wall and the inner wall of the lens tube; and a phosphor powder is disposed in the continuous strip shape on the annular plate and covers the plurality of light emitting diodes.

Therefore, the present invention can be fabricated by using a COB process by using an LED on a flexible circuit board, and is matched with a fluorescent powder to generate a white light source of sufficient brightness. In addition, the creation is extremely convenient when assembling the LED light source, and the LED light source can be firmly fixed in the lens tube of the endoscope.

In order to explain in detail the technical features of the present invention, the following preferred embodiments are described below with reference to the following:

As shown in the first to third embodiments, an endoscope image capturing module 10 having a fluorescent coated LED light source according to the first preferred embodiment of the present invention is mainly composed of a lens tube 11 and an image capturing assembly. 21. A flexible circuit board 31, a plurality of light emitting diodes (LEDs) 41, and a phosphor powder 45, wherein:

The lens tube 11 defines one end thereof as a front end. In actual implementation, the lens tube 11 must be connected to a long hose (not shown) and then connected to an endoscope main unit (not shown), and the wires are used to provide power and signals, but Long hoses and endoscope mounts are well known in the art and are well known to those of ordinary skill in the art and will not be described again.

The image capturing component 21 has an image sensor 22 and a lens 24 disposed in the lens tube 11. The image capturing assembly 21 further has a partition wall 26 that is tubular around the lens 24 and radially spaced apart from the tube wall of the lens tube 11 by a predetermined distance. The partition wall 26 causes the image sensor 22 to The image can only be taken forward by the lens 24. The front end of the partition wall 26 is located rearward of the front end of the lens tube 11, and is spaced apart from the front end of the lens tube 11 by a predetermined distance. The rear end of the partition wall 26 is arranged in a rearward manner, so that the front end of the lens tube 11 can first touch the object to avoid the protection effect of the lens 24 touching the object.

The flexible circuit board 31 has an elongated body 32 and an annular plate 34 housed in the lens tube 11. The flexible circuit board 31 is pre-bent so that the surface of the annular plate 34 faces forward. The annular plate 34 is located between the partition wall 26 and the inner wall of the lens tube 11, and the elongated plate body 32 is disposed along the axial direction of the lens tube 11.

The plurality of LEDs 41 are disposed on the front surface of the annular plate 34 and are located between the partition wall 26 and the inner wall of the lens tube 11. In this embodiment, the plurality of LEDs 41 are blue LEDs, and the blue light emitted by the plurality of LEDs is used to excite the fluorescent material to emit yellow light, and mixed with it to become white light. In addition, the plurality of LEDs 41 are disposed on the annular plate 34 in a COB process.

The phosphor powder 45 is provided in a continuous strip shape on the annular plate 34 and covers the plurality of LEDs 41. In this embodiment, the phosphor powder 45 is connected to the end of the ring and has an annular shape, and the phosphor powder 45 has a middle cross and a low cross section in the cross section of the strip extending direction. Curved surface. Such an arrangement can be such that the phosphor powder 45 is excited by the plurality of LEDs 41 and mixed into white light, and can be illuminated by a strip light source, and can also be oriented by a surface having a low side on both sides. The angle of the outer diffusion illuminates, thereby having a larger angle of illumination. In actual practice, the phosphor powder 45 can be fixed to the annular plate 34 and the plurality of LEDs 41 by baking curing.

In the above-mentioned structure, when the plurality of LEDs 41 emit blue light, the phosphor powder 45 is excited to emit yellow light and mixed into white light, and then emitted outward, thereby providing a light source.

The above structure is sufficient for the light source that illuminates the endoscope to be disposed on the flexible circuit board 31 by the COB process, and the COB process can have more space, so that the LED with larger volume and higher brightness can be used. The crystal grains are combined with the phosphor powder 45 to produce a white light source of sufficient brightness. Since the plurality of LEDs 41 are mounted on the flexible circuit board 31, and the flexible circuit board 31 has been bent in advance, the flexible circuit board 31 is placed in the lens tube 11 during assembly. It is extremely convenient to place the annular plate 34 between the partition wall 26 and the lens tube 11, and since the annular plate 34 is surrounded by the partition wall 26, it is equal to Since the partition wall 26 is positioned by the sleeve, the LED light source can be stably fixed in the lens tube 11.

As shown in FIG. 4 to FIG. 5 , the first preferred embodiment further includes a transparent protective adhesive 51 covering the fluorescent powder 45 , and the transparent protective adhesive 51 is in contact with the lens. The inner wall of the tube 11 and the outer wall of the partition wall 26. The surface of the light-transmitting protective adhesive 51 is flat. Such an arrangement makes the light-transmitting protective adhesive 51 not generate additional optical characteristics, thereby ensuring that the mixed white light does not have additional refraction when it is emitted. In addition, the surface of the transparent protective adhesive 51 may also be disposed to extend from the end of the partition wall 26 to the end of the lens tube 11 , and the arrangement may further protect the outer wall surface of the partition wall 26 and the lens tube 11 . The wall does not come into contact with dust or dirt, extending the life of the product. The light-transmitting protective rubber 51 can further provide a positioning effect for positioning the annular plate 34. In actual practice, the transparent protective adhesive 51 can be cured by liquid irradiation by ultraviolet rays, and since the transparent protective adhesive 51 and the fluorescent powder 45 are different substances, the two can be further A glue (not shown) is provided to enhance the adhesion between the two.

Further, as shown in FIGS. 2 and 4, in order to provide a lateral light source, the flexible circuit board 31 further extends laterally from the elongated body 32 to a side long plate 36 having a distal end 36. The side light plate 361 is provided with a side LED 411 on the side light plate 361, and the side LED 411 is covered with a phosphor powder 45. The side panel 36 is designed to have an arc-shaped shape, and the curvature of the arc is greater than or equal to the curvature of the tube wall of the lens tube 11, so that the flexible circuit board 31 can be conveniently placed. When the lens tube 11 is inside, the side long plate 36 can be placed against the tube wall. The lens tube 11 also needs to have a side hole 111 on the side for the side LED 411 to be exposed. As shown in FIG. 5, in addition to the fluorescent powder 45 disposed on the side LED 411, the transparent protective adhesive 51 may be further disposed.

It is worth mentioning that, as shown in Fig. 6, the phosphor powder 45 may not be in the shape of a ring when it is disposed, but may form a C shape, and may also emit white light after mixing. That is, the phosphor powder 45 is not limited by the annular shape when it is disposed.

In addition, as shown in FIG. 7 , the arrangement of the transparent protective adhesive 51 is not necessarily directly attached to the fluorescent powder 45. There are other arrangements, for example, an annular transparent plate 55 may be first fixed. The transparent plate 55 is spaced apart from the phosphor powder 45 by a predetermined distance from the partition wall 26, and the transparent protective adhesive 51 is placed on the transparent plate 55. Thereby, the transparent protective adhesive 51 still covers the fluorescent powder 45 but is separated from the fluorescent powder 45 by a predetermined distance.

Referring to FIG. 8 , an endoscope image capturing module 10 ′ having a fluorescent coated LED light source according to a second preferred embodiment of the present invention is mainly similar to the first embodiment disclosed above. It is:

The inner wall surface of the lens tube 11' is provided with a light absorbing paint 19' which covers the inner wall surface of the lens tube 11' from the annular plate 34' to the front end of the lens tube 11'. The light absorbing paint 19' can use a black flat (non-reflective) coating, which can reduce or avoid the light reflected from the white light of the lens tube 11' and then reflect to the lens 24', thereby reducing or avoiding the image. There is a problem with glare.

Since the light-absorbing paint 19' is disposed on the inner wall surface of the lens tube 11', the light-transmitting protective rubber 51' is disposed not directly on the tube wall of the lens tube 11', but directly contacts or covers the light-absorbing paint. 19'.

The remaining structure of the second embodiment and the achievable functions are the same as those of the first embodiment, and will not be described again.

10‧‧‧Endoscope image capture module with fluorescent coated LED light source

11‧‧‧ lens tube

111‧‧‧ side hole

21‧‧‧Image capture components

22‧‧‧Image Sensor

24‧‧‧ lens

26‧‧‧ partition wall

31‧‧‧Soft circuit board

32‧‧‧Long body

34‧‧‧ring plate

36‧‧‧Side long board

361‧‧‧Side light board

41‧‧‧Lighting diode (LED)

411‧‧‧ side LED

45‧‧‧Fluorescent powder glue

51‧‧‧Transparent protective glue

55‧‧‧Transparent board

10'‧‧‧Endoscope image capture module with fluorescent coated LED light source

11'‧‧‧ lens tube

19’‧‧‧Light absorbing coating

24’‧‧‧ lens

34’‧‧‧ring plate

51'‧‧‧Transparent protective glue

Figure 1 is a perspective view of the combination of the first preferred embodiment of the present invention. Figure 2 is an exploded view of the first preferred embodiment of the present invention. Fig. 3 is a cross-sectional view taken along line 3-3 of Fig. 1. Fig. 4 is another exploded view of the first preferred embodiment of the present invention, showing the structure of the additional light-transmitting protective glue. Figure 5 is a cross-sectional view of the combination of Figure 4 showing the addition of a transparent protective adhesive. Fig. 6 is a further exploded view of the first preferred embodiment of the present invention, showing a state in which the phosphor powder is set in a C shape. Figure 7 is another cross-sectional view showing the first preferred embodiment of the present invention, showing the state in which the transparent plate is disposed. Figure 8 is a schematic cross-sectional view showing a second preferred embodiment of the present invention.

Claims (17)

An endoscope image capturing module having a fluorescent coated LED light source, comprising: a lens tube defining one end thereof as a front end; an image capturing component having an image sensor and a lens disposed on the lens The image capturing assembly further has a partition wall that is tubular around the lens and radially spaced apart from the wall of the lens tube by a predetermined distance, and the image sensor can only be imaged forward through the lens The method further includes: a flexible circuit board having an elongated body and an annular plate housed in the lens tube, the flexible circuit board being pre-bent to make the plate of the annular plate Faced forward, and the annular plate is located between the partition wall and the inner wall of the lens tube, and the elongated plate body is disposed along the axial direction of the lens tube; a plurality of light emitting diodes (LEDs) are disposed at the The circular plate faces the front plate surface and is located between the partition wall and the inner wall of the lens tube; and a phosphor powder is disposed in the continuous strip shape on the annular plate and covers the plurality of light emitting diodes. An endoscope image capturing module having a fluorescent coated LED light source according to the first aspect of the patent application, wherein the fluorescent powder adhesive has an annular shape. An endoscope image capturing module having a fluorescent coated LED light source according to the first aspect of the patent application, wherein: the fluorescent powder adhesive has a middle height and a cross section in a strip extending direction The side is low. An endoscope image capturing module having a fluorescent coated LED light source according to claim 1, wherein: the inner wall surface of the lens tube is provided with a light absorbing coating, and the light absorbing paint covers the inner wall surface of the lens tube by the ring The range from the board to the front end of the lens tube. An endoscope image capturing module having a fluorescent coated LED light source according to claim 4, further comprising: a transparent protective adhesive covering the fluorescent powder, the transparent protective adhesive And contacting the light absorbing coating and the outer wall of the partition wall. An endoscope image capturing module having a fluorescent coated LED light source according to claim 5, wherein: the transparent protective adhesive and the fluorescent powder are adhered by a glue. An endoscope image capturing module having a fluorescent coated LED light source according to claim 5, wherein: the transparent protective adhesive is attached to a transparent plate, and the transparent plate is fixed on the partition wall to cover The phosphor powder is separated from the phosphor powder by a predetermined distance. An endoscope image capturing module having a fluorescent coated LED light source according to claim 5, wherein: the surface of the transparent protective adhesive is flat. An endoscope image capturing module having a fluorescent coated LED light source according to claim 5, wherein the surface of the transparent protective adhesive extends from the end of the partition wall to the end of the lens tube. An endoscope image capturing module having a fluorescent coated LED light source according to claim 1, wherein the front end of the partition wall is located behind the front end of the lens tube and spaced apart from the front end of the lens tube by a predetermined distance. An endoscope image capturing module having a fluorescent coated LED light source according to the first aspect of the patent application, further comprising: a transparent protective adhesive covering the fluorescent powder, the transparent protective adhesive And contacting the inner wall of the lens tube and the outer wall of the partition wall. An endoscope image capturing module having a fluorescent coated LED light source according to claim 11 wherein: the transparent protective adhesive and the fluorescent powder are adhered by a glue. An endoscope image capturing module having a fluorescent coated LED light source according to claim 11 , wherein: the transparent protective adhesive is attached to a transparent plate, and the transparent plate is fixed on the partition wall to cover The phosphor powder is separated from the phosphor powder by a predetermined distance. An endoscope image capturing module having a fluorescent coated LED light source according to claim 11 wherein: the surface of the transparent protective adhesive is flat. An endoscope image capturing module having a fluorescent coated LED light source according to claim 11 wherein: the surface of the transparent protective adhesive extends from the end of the partition wall to the end of the lens tube. An endoscope image capturing module having a fluorescent coated LED light source according to claim 1, wherein the flexible circuit board has a long side plate extending laterally from the elongated plate body, and the side long plate end has The one side light plate is provided with at least one side light emitting diode on the side light plate, and the at least one side light emitting diode is covered with the fluorescent powder glue. An endoscope image capturing module having a fluorescent coated LED light source according to claim 12, wherein: the side long plate has an arc extending, and the curvature of the curved portion is greater than or equal to the horizontal of the lens tube. The curvature of the wall of the section.