TW202143907A - Endoscope module and image sensor - Google Patents

Abstract

An endoscope module including a prism-shaped lens, a annular light-shielding sheet, a multi-region lens, and an image sensor is provided. The prism-shaped lens has a prism portion and a lens portion. The prism portion surrounds the lens portion, and has an annular reflective inclined surface. The annular light-shielding sheet covers the annular reflective inclined surface, and has a central opening to expose the lens portion. The multi-region lens has a central portion and an annular portion surrounding the central portion. A first light from a front side penetrates the central opening of the annular light-shielding sheet, the lens portion, and the central region in sequence and is then transmitted to a center of the image sensor. A second light from a lateral side is reflected to the annular region by the annular reflective inclined surface after entering the prism portion, and is then condensed to a peripheral region of the image sensor by the annular region. An image sensor is also provided.

Description

Endoscope Module and Image Sensor

The present invention relates to an optical module and a photoelectric element, and in particular, to an endoscope module and an image sensor.

Endoscope (endoscope) plays an important role in internal examination and minimally invasive surgery. It can penetrate deep into the human body to obtain some image information directly obtained from the human body, so as to achieve more accurate diagnosis and better surgery. result.

However, for general endoscopes, the lens located on the front cannot see the side image, and the lens located on the side also has blind spots that cannot be seen (for example, the front cannot be seen), which makes the inside of the human body invisible. A complete image is difficult to create.

The present invention provides an endoscope module, which can simultaneously sense objects on the front and side.

The present invention provides an image sensor capable of efficiently detecting an annular image.

An embodiment of the present invention provides an endoscope module, which includes a hexagonal lens, an annular light shield, a multi-zone lens, and an image sensor. The horn-shaped lens has a horn portion and a lens portion, wherein the horn portion surrounds the lens portion and has an annular reflection slope. The annular light-shielding sheet covers the annular reflection slope and has a central opening to expose the lens portion. The multi-zone lens has a central zone and an annular zone surrounding the central zone. A first light from the front side sequentially penetrates the central opening, the lens portion and the central area of the annular light-shielding plate and is transmitted to the center of the image sensor, while a second light from the side is reflected by the ring after entering the lens portion The slope is reflected to the annular area, and then converged by the annular area to the edge area of the image sensor.

An embodiment of the present invention provides an image sensor including a plurality of first pixels and a plurality of second pixels. The first pixels are radially arranged in the central sensing area of the image sensor, and the second pixels are radially arranged in the annular sensing area of the image sensor, wherein the annular sensing area surrounds the center sensing area.

An embodiment of the present invention provides an endoscope module, which includes a horn-shaped lens, an annular shading sheet, a multi-zone lens and a light-transmitting protective bag. The horn-shaped lens has a horn portion and a lens portion, wherein the horn portion surrounds the lens portion and has an annular reflection slope. The annular light-shielding sheet covers the annular reflection slope and has a central opening to expose the lens portion. The multi-area lens has a central area and an annular area surrounding the central area, wherein the hexagonal lens is arranged between the annular light-shielding plate and the multi-area lens. The light-transmitting protective bag covers the sapphire-shaped lens, the annular shading sheet and the multi-zone lens.

An embodiment of the present invention provides an endoscope module, which includes a first endoscope module and at least a second endoscope module. The first inner-view mirror module includes a hexagonal lens, a first annular light shielding plate, a multi-zone lens and an image sensor. The horn-shaped lens has a horn portion and a lens portion, wherein the horn portion surrounds the lens portion and has a first annular reflection slope. The first annular light-shielding sheet covers the first annular reflection slope and has a central opening to expose the lens portion. The multi-zone lens has a central zone and an annular zone surrounding the central zone. A first light from the front penetrates the central opening, the lens portion and the central area of the first annular light-shielding plate in sequence and is transmitted to the center of the image sensor, while a second light from the side enters the iris portion It is reflected to the annular area by the first annular reflection slope, and then converged to the edge area of the image sensor by the annular area. The second inner-view mirror module is arranged on one side of the first inner-view mirror module, and includes an annular lens, a second annular light shielding plate, an annular lens and an annular image sensor. The annular pole has a second annular reflection slope. The second annular light shielding sheet covers the second annular reflection slope. A third light from the side surface is reflected to the annular lens by the second annular reflection slope after entering the annular lens, and then condensed to the annular image sensor by the annular lens.

In the endoscope module of the embodiment of the present invention, since the iris-shaped lens with the lens portion and the iris portion is used to transmit the light from the front and the side to the center and edge regions of the image sensor, respectively, The endoscope module of the embodiment of the present invention can simultaneously sense objects on the front and the side. In addition, in the endoscope module according to the embodiment of the present invention, since a light-transmitting protective bag is used to cover the iris-shaped lens, the annular light-shielding plate and the multi-zone lens, the internal elements of the endoscope module can be The organ is isolated, and the liquid of the organ can be prevented from contaminating the internal components of the endoscope module. In addition, the light-transmitting protective bag also ensures the working distance of the internal components of the endoscope module relative to the external object, so that the external object can be clearly imaged on the image sensor. In the image sensor of the embodiment of the present invention, since the first pixels and the second pixels are radially arranged, it is helpful to detect the annular image efficiently. In the endoscope module of the embodiment of the present invention, since the first endoscope module that can detect the front and side images and at least one second endoscope module that can detect the side images are adopted, it is possible to Obtain inner images of tubular objects or organs with fewer scans.

FIG. 1A is a schematic cross-sectional view of the interior of an endoscope module according to an embodiment of the present invention, and FIG. 1B is a three-dimensional schematic view of the horn-shaped lens, the annular light-shielding plate and the multi-zone lens in FIG. 1A after being cut along the optical axis . Referring to FIGS. 1A and 1B , the endoscope module 100 of the present embodiment includes a hexagonal lens 200 , an annular shading sheet 110 , a multi-zone lens 300 and an image sensor 120 . The horn-shaped lens 200 has a horn portion 220 and a lens portion 210 , wherein the horn portion 220 surrounds the lens portion 210 and has an annular reflection slope 222 . The annular light shielding sheet 110 covers the annular reflecting slope 222 and has a central opening 112 to expose the lens portion 210 . The multi-zone lens 300 has a central zone 310 and an annular zone 320 surrounding the central zone 310 . A first light 51 from the front side 50 sequentially passes through the central opening 112 , the lens portion 210 and the central area 310 of the annular light shielding sheet 110 and is transmitted to the center of the image sensor 120 , and a second light 61 from the side surface 60 After entering the ridge portion 220 , it is reflected by the annular reflection slope 222 to the annular region 320 , and then converged to the edge region of the image sensor 120 by the annular region 320 . In addition, the prismatic lens 200 is disposed between the annular light shielding plate 110 and the multi-zone lens 300 .

In this embodiment, the ridge portion 220 further has a light incident surface 223 and a light emitting surface 224 , the light incident surface 223 faces the side surface 60 , and the light emitting surface 224 faces away from the front surface 50 and faces the image sensor 120 . The second light 61 from the side surface 60 sequentially enters the ridge portion 220 through the light incident surface 223 , is totally reflected by the annular reflecting slope 222 to the light exit surface 224 , and passes through the light exit surface 224 to be transmitted to the annular region 320 . In other words, there is an air gap between the annular reflection slope 222 and the annular light shielding plate 110 , and the annular reflection slope 222 is a total reflection surface. In this embodiment, the inclination angle θ of the annular reflection slope 222 relative to the optical axis A of the lens portion 210 falls within the range of 42 degrees to 48 degrees, so that the second light 61 from the side surface 60 can be well reflected by the annular reflection slope The ground is totally reflected to the annular region 320 .

In this embodiment, the endoscope module 100 further includes a stop 130 having a central aperture 132 and an annular aperture 134 . The first light 51 from the lens portion 210 is transmitted to the central area 310 through the central aperture 132 . The annular aperture 134 surrounds the central aperture 132 , wherein the second light 61 from the aperture portion 220 is transmitted to the annular region 320 through the annular aperture 134 . In addition, in this embodiment, the focal length of the central area 310 is different from the focal length of the annular area 320 , that is, the central area 310 and the annular area 320 can be regarded as two lenses with different focal lengths but connected.

In this embodiment, the hexagonal lens 200 , the annular light shielding plate 110 , the multi-zone lens 300 and the diaphragm 130 are, for example, axially symmetric with the optical axis A as the axis of symmetry, that is to say, the annular reflection slope 222 and the annular light shielding The sheets 110 are all in the shape of a decapitated conical surface.

FIG. 2 illustrates the point focus and the ring focus of the endoscope module in FIG. 1A on the image sensor. Referring to FIGS. 1A , 1B and 2 , in this embodiment, the lens portion 210 and the central area 310 of the endoscope module 100 generate a point focus P1 in the central sensing area 122 of the image sensor 120 , and The ridge portion 220 and the annular area 320 generate an annular focus P2 in the annular sensing area 124 of the image sensor 120 , wherein the annular sensing area 120 surrounds the central sensing area 122 . Under the action of the lens portion 210 and the central area 310 , the first light 51 from the front surface 50 forms an image in the central sensing area 122 to reflect the image of the object located on the front surface 50 of the endoscope module 100 . In addition, under the action of the ridge portion 220 and the annular area 320 , the second light 61 from the side surface 60 forms an image in the annular sensing area 124 to reflect the image of the object located on the side surface 60 of the endoscope module 100 . In this embodiment, there is a gap G between the central sensing area 122 and the annular sensing area 124 .

In the endoscope module 100 of the present embodiment, the iris-shaped lens 200 having the lens portion 210 and the iris portion 220 is used to transmit the light from the front surface 50 and the side surface 60 to the center of the image sensor 120 respectively. (ie, the central sensing area 122 ) and the edge area (ie, the annular sensing area 124 ), so the endoscope module 100 of this embodiment can simultaneously sense objects on the front 50 and the side 60 .

FIG. 3 is a schematic cross-sectional view of the endoscope module of FIG. 1A . Referring to FIGS. 1A and 3 , the endoscope module 100 of the present embodiment further includes a ring light source 140 , wherein the horn-shaped lens 200 is disposed between the ring light source 140 and the multi-zone lens 300 . After the illumination light 141 emitted by the annular light source 140 is irradiated on the object on the side surface 60 of the endoscope module 100, it is reflected by the object into the second light 61, and the illumination light 141 emitted by the annular light source 140 is irradiated inside. After the object on the front surface 50 of the mirror module 100 is reflected by the object into the first light 51 . In this embodiment, the annular light source 140 can emit light of various colors in turn, such as red light, green light and blue light in turn, so that the image sensor 120 can detect the red light image, the green light image and the blue light image in turn. . After combining these red light images, green light images and blue light images, color images of objects around the endoscope module 100 can be obtained.

In this embodiment, the endoscope module 100 further includes a light-transmitting protective bag 150 , which covers the iris-shaped lens 200 , the annular light shielding sheet 110 , the multi-zone lens 300 and the image sensor 120 . The light-transmitting protective bag 150 can isolate the internal components of the endoscope module 100 from the organs of the human body or animal to be tested, and can prevent the liquid of the organs from contaminating the internal components of the endoscope module 100 . In addition, the light-transmitting protective bag 150 also ensures the working distance of the internal components of the endoscope module 100 relative to external objects, so that the external objects can be clearly imaged on the image sensor 120 . In addition, the light-transmitting protective bag 150 is adapted to be penetrated by the illumination light 141 emitted by the annular light source 140 inside and transmitted to the outside thereof, and the light-transmitting protective bag 150 is suitable for allowing the first light reflected by the external object. The light 51 and the second light 52 pass through and are transmitted to the inside thereof to be sensed by the image sensor 120 .

FIG. 4 is a schematic front view of the image sensor in FIG. 1A . 1A and FIG. 4 , in this embodiment, the image sensor 120 has a plurality of pixels, and these pixels include a plurality of first pixels 123 and a plurality of second pixels 125 , and these pixels are arranged radially, for example The center points of the image sensors 120 are arranged radially. In addition, in this embodiment, the first pixels 123 are radially arranged in the central sensing area 122 of the image sensor 120 to sense the first light 51 , and the second pixels 125 are radially arranged In the annular sensing area 124 of the image sensor 120 , the second light 61 is sensed.

FIG. 5 is a schematic diagram of the application of the endoscope module of FIG. 3 . Please refer to FIG. 1A , FIG. 3 and FIG. 5 . FIG. 5 illustrates the situation where the endoscope module 100 extends into the tubular tissue 70 (eg, intestine or blood vessel). As can be seen from FIG. 5 , the ring of the image sensor 120 The shape sensing area 124 can sense the image of the inner wall of the tubular tissue 70 located on the side 60 of the endoscope module 100 (ie, the annular image I1 ). When images of the inner wall are moved and sequentially sensed, these images are combined to reconstruct a complete image of the inner wall of the entire tubular tissue to provide physicians with sufficient information. In addition, as shown in Fig. 4, when the annular image I1 is sensed with radially arranged pixels, since the distribution of the pixels corresponds to the shape of the image, when the annular image I1 is subsequently enlarged or reduced, or superimposed, It can minimize the loss of image resolution and make the image clearest.

In addition, the illumination light 141 emitted by the annular light source 140 can also be infrared light, for example, infrared light with a wavelength of approximately more than 1000 nanometers, so that the image sensor 120 can obtain the blood vessel image of the inner wall of the tubular tissue. Inventions are not limited to this.

It is worth mentioning that the endoscope module 100 of the present embodiment is not limited to obtaining images of human body or animal structures or organs, and can be used to obtain internal images of internal objects or structures, such as obtaining water pipes. , internal images of air ducts or sewers.

6 is a schematic cross-sectional view of an endoscope module according to another embodiment of the present invention. Referring to FIG. 6 , the endoscope module 100 a of the present embodiment is similar to the endoscope module 100 of FIGS. 1A and 3 , and the differences between the two are as follows. The endoscope module 100a of this embodiment includes a first endoscope module 400 and at least one second endoscope module 500 (a plurality of second endoscope modules 500 are taken as an example in FIG. 6 ) . The first endoscope module 400 is the same as the endoscope module 100 in FIG. 1A , and includes a hexagonal lens 200 , an annular light shield 110 , a multi-zone lens 300 and an image sensor 120 . The details of these components and the The relationship between them has been described in detail in the above embodiments, and will not be repeated here. The second inner-view mirror module 500 is disposed on one side of the first inner-view mirror module 400 , and includes an annular lens 510 , an annular light shielding plate 520 , an annular lens 530 and an annular image sensor 540 . In this embodiment, the endoscope module 100a further includes a fixing rod 560, which penetrates through the center of the annular lens 510, the annular light shielding plate 520, the annular lens 530 and the annular image sensor 540 to fix the annular lens 510, The annular light shielding plate 520 , the annular lens 530 and the annular image sensor 540 . In addition, in this embodiment, the image sensor 120 of the first interior mirror module 400 can be fixed to one end of the fixing rod 560 .

In this embodiment, the annular lens 510 is the same as the lens portion 220 of the lens-shaped lens 200, and the annular lens 510 does not have the lens portion 210 as shown in FIG. 1A, but has an opening 511 in the center for fixing the rod 560 runs through. Therefore, the annular reflective slope 512 of the annular horn 510 is the same as the annular reflective slope 222 of the horn portion 220 of FIG. 1A . For details, please refer to the description of the annular reflective slope 222 in the above embodiment, which will not be repeated here. In addition, the annular light shielding sheet 520 is the same as the annular light shielding sheet 110 in FIG. 1A , and the annular light shielding surface 520 covers the annular reflecting slope 512 . The annular lens 530 is the same as the annular area 320 of the multi-area lens 300 , and the annular lens 530 does not have the central area 310 as shown in FIG. 1A , but has an opening 531 in the center for the fixing rod 560 to penetrate.

The third light 81 from the side surface 60 is reflected by the second annular reflection slope 512 to the annular lens 530 after entering the annular lens 510 , and then concentrated to the annular image sensor 540 by the annular lens 530 . In this embodiment, the second interior mirror module 500 may further include a diaphragm 550 having an annular diaphragm 554 similar to the annular diaphragm 134 of FIG. 1A , but not having the central diaphragm 132 of FIG. 1A . The center of the diaphragm 550 is replaced by an opening 551 through which the fixing rod 560 passes.

7A and 7B are schematic front views of the annular image sensor 540 and the image sensor 120 in the endoscope module of FIG. 6 , respectively. Referring to FIGS. 6 , 7A and 7B, in this embodiment, the annular image sensor 540 is the same as the annular sensing area 124 of FIG. 4 , and the annular image sensor 540 has the second pixel as shown in FIG. 4 . 125 pixels 542, and the annular image sensor 540 does not have the central sensing area 122 of FIG. 4, but has an opening 541 in the center thereof for the fixing rod 560 to pass through. FIG. 7B schematically illustrates the image sensor 120 in the first interior mirror module 400 , and the detailed content of the image sensor 120 can be referred to the description of the image sensor 120 in the above-mentioned embodiment, which will not be repeated here.

In this embodiment, the arrangement relationship among the annular lens 510 , the annular light shielding plate 520 , the annular lens 530 , the annular aperture 554 and the annular image sensor 540 is the same or similar to that of the lens in the embodiment of FIG. 1A 220 , the arrangement relationship among the annular light shielding plate 110 , the annular area 320 , the annular aperture 134 and the annular sensing area 124 , so please refer to the embodiment of FIG. 1A for details, and will not be repeated here.

FIG. 8 is a schematic diagram of a partial image obtained by the endoscope module of FIG. 6 . Please refer to FIG. 6 and FIG. 8 , the endoscope module 100a of the present embodiment can be used to detect images inside a tubular object or a tubular organ, for example, an image of the trachea of a human body. As shown in FIG. 8 , the central sensing area 122 of the image sensor 120 of the first endoscope module 400 can acquire an image M1, which is the image of the front surface 50 of the endoscope module 100a. The ring-shaped sensing area 124 of the image sensor 120 of the mirror module 400 can acquire the image M2 , which is the image of the side surface 60 of the first ring closest to the front surface 50 . In addition, the annular image sensor 540 of the second interior mirror module 500 can acquire the image M3 , which is the image of the side surface 60 above the second ring closest to the front surface 50 . The image M1 is, for example, a circle, and the images M2 and M3 are, for example, a cylindrical shape, and FIG. 8 shows a situation where a part of the images M1 , M2 and M3 is cut off for convenience of illustration. In addition, as the number of the second interior mirror modules 500 increases, the length L3 of the image M3 can also be increased. In this way, compared to the endoscope module 100 in FIG. 1A , which needs to slide along the channel of the tubular organ to scan the internal image of the tubular organ, the internal image of the entire tubular organ or object can be obtained. The mirror module 100a can obtain the internal image of the entire tubular organ in one shot (if the number of the second endoscope mirror modules 500 is large enough), or the endoscope module 100a of the present embodiment can use fewer scanning times Or the number of shots to obtain a complete image of the interior of a tubular organ or object.

FIG. 9 illustrates a situation in which the images M2 and M3 of FIG. 8 are expanded. Please refer to FIG. 8 and FIG. 9 , when the user wants to view the images M2 and M3 obtained by the endoscope module 100a, the images M2 and M3 can be expanded into rectangles by a computer to be displayed on the monitor, so as to facilitate the user to view the images M2 and M3. Whether there is any abnormality in the interior of a tubular organ or object.

FIG. 10 is a three-dimensional schematic diagram of the endoscope module of FIG. 6 and its sensed surrounding image cut in half along the longitudinal direction. Please refer to FIG. 6 and FIG. 10 , it can be seen from FIG. 10 that the positions of the first interior mirror module 400 and the second interior mirror module 500 and the images M1 , M2 and M3 in the three-dimensional space correspond to each other. The drawings are concise and easy to understand, and FIG. 10 does not show the details of the first interior mirror module 400 and the second interior mirror module 500 in detail, and for these details, please refer to those shown in FIG. 6 .

To sum up, in the endoscope module of the embodiment of the present invention, the iris-shaped lens having the lens portion and the iris portion is used to transmit the light from the front and the side to the center of the image sensor, respectively. Therefore, the endoscope module of the embodiment of the present invention can simultaneously sense objects on the front and side. In addition, in the endoscope module according to the embodiment of the present invention, since a light-transmitting protective bag is used to cover the iris-shaped lens, the annular light-shielding plate and the multi-zone lens, the internal elements of the endoscope module can be The organ is isolated, and the liquid of the organ can be prevented from contaminating the internal components of the endoscope module. In addition, the light-transmitting protective bag also ensures the working distance of the internal components of the endoscope module relative to the external object, so that the external object can be clearly imaged on the image sensor. In the image sensor of the embodiment of the present invention, since the first pixels and the second pixels are radially arranged, it is helpful to detect the annular image efficiently. In the endoscope module of the embodiment of the present invention, since the first endoscope module that can detect the front and side images and at least one second endoscope module that can detect the side images are adopted, it is possible to Obtain inner images of tubular objects or organs with fewer scans.

50: front 51: First Light 60: side 61: Second Light 70: Tubular tissue 81: Third Light 100, 100a: endoscope module 110, 520: Ring shading sheet 112: Central opening 120: Image sensor 122: Central sensing area 123: first pixel 124: Ring Sensing Area 125: Second pixel 130, 550: diaphragm 132: Central aperture 134: Ring Aperture 140: Ring light source 141: Lighting Light 150: Translucent protective bag 200: Haze-shaped lens 210: Lens section 220: Hidehan Department 222, 512: annular reflection slope 223: light incident surface 224: light-emitting surface 300: Multi-Zone Lens 310: Central District 320: Ring Zone 400: The first interior mirror module 500: Second internal mirror module 510: The Ring 511, 531, 541, 551: Openings 530: Ring Lens 540: Ring Image Sensor 542: pixels 560: Fixed rod A: Optical axis G: Gap I1: Ring Image M1, M2, M3: Image P1: Point-like focus P2: Ring Focus θ: tilt angle

1A is a schematic cross-sectional view of the interior of an endoscope module according to an embodiment of the present invention. FIG. 1B is a three-dimensional schematic view of the halved-shaped lens, the annular light shielding plate and the multi-zone lens in FIG. 1A after being cut along the optical axis. FIG. 2 illustrates the point focus and the ring focus of the endoscope module in FIG. 1A on the image sensor. FIG. 3 is a schematic cross-sectional view of the endoscope module of FIG. 1A . FIG. 4 is a schematic front view of the image sensor in FIG. 1A . FIG. 5 is a schematic diagram of the application of the endoscope module of FIG. 3 . 6 is a schematic cross-sectional view of an endoscope module according to another embodiment of the present invention. 7A and 7B are schematic front views of the annular image sensor and the image sensor in the endoscope module of FIG. 6 , respectively. FIG. 8 is a schematic diagram of a partial image obtained by the endoscope module of FIG. 6 . FIG. 9 illustrates a situation in which the images M2 and M3 of FIG. 8 are expanded. FIG. 10 is a three-dimensional schematic diagram of the endoscope module of FIG. 6 and its sensed surrounding image cut in half along the longitudinal direction.

50: front

51: First Light

60: side

61: Second Light

100: Endoscope Module

110: Ring shading sheet

112: Central opening

120: Image sensor

130: Aperture

132: Central aperture

134: Ring Aperture

200: Haze-shaped lens

210: Lens section

220: Hidehan Department

222: Circular Reflective Bevel

223: light incident surface

224: light-emitting surface

300: Multi-Zone Lens

310: Central District

320: Ring Zone

A: Optical axis

θ: tilt angle

Claims (16)

An endoscope module, comprising: a horn-shaped lens having a horn portion and a lens portion, wherein the horn portion surrounds the lens portion and has an annular reflection slope; an annular light-shielding sheet covering the annular reflection slope and having a central opening to expose the lens portion; a multi-zone lens having a central zone and an annular zone surrounding the central zone; and an image sensor, wherein a first light from the front penetrates the central opening, the lens portion and the central area of the annular light-shielding plate in sequence and is transmitted to the center of the image sensor, and a first light from the side The second light is reflected to the annular region by the annular reflecting slope after entering the ridge portion, and then concentrated to the edge region of the image sensor by the annular region. The endoscope module as claimed in claim 1, wherein the upper portion further has: a light-incident face, towards that side; and a light-emitting surface, facing away from the front surface and facing the image sensor, wherein the second light from the side enters the ridge part through the light-incident surface in sequence, and is totally reflected to the light-emitting surface by the annular reflecting slope and pass through the light emitting surface to be transmitted to the annular area. The endoscope module according to claim 1, further comprising a diaphragm, having: a central aperture through which the first light from the lens portion is delivered to the central region; and An annular aperture surrounds the central aperture, wherein the second light from the apex portion is transmitted to the annular area through the annular aperture. The endoscope module of claim 1, wherein the focal length of the central area is different from the focal length of the annular area. The endoscope module of claim 1, wherein the image sensor has a plurality of pixels, and the pixels are arranged radially. The endoscope module of claim 5, wherein the pixels include a plurality of first pixels and a plurality of second pixels, and the first pixels are radially arranged at the center of the image sensor for sensing area to sense the first light, and the second pixels are radially arranged in the annular sensing area of the image sensor to sense the second light, and the annular sensing area surrounds the central sensing area. The endoscope module of claim 6, wherein there is a gap between the central sensing area and the annular sensing area. The endoscope module as claimed in claim 1, further comprising a light-transmitting protective bag covering the iris-shaped lens, the annular shading sheet, the multi-zone lens and the image sensor. The endoscope module according to claim 1, wherein the inclination angle of the annular reflection slope relative to the optical axis of the lens portion falls within a range of 42 degrees to 48 degrees. The endoscope module according to claim 1, further comprising a ring-shaped light source, wherein the horn-shaped lens is disposed between the ring-shaped light source and the multi-zone lens. The endoscope module according to claim 10, wherein the annular light source emits light of a plurality of different colors in turn. An image sensor, comprising: a plurality of first pixels arranged radially in the central sensing area of the image sensor; and A plurality of second pixels are radially arranged in the annular sensing area of the image sensor, wherein the annular sensing area surrounds the central sensing area. The image sensor of claim 12, wherein there is a gap between the central sensing area and the annular sensing area. An endoscope module, comprising: a horn-shaped lens having a horn portion and a lens portion, wherein the horn portion surrounds the lens portion and has an annular reflection slope; an annular light-shielding sheet covering the annular reflection slope and having a central opening to expose the lens portion; a multi-zone lens having a central zone and an annular zone surrounding the central zone, wherein the hexagonal lens is disposed between the annular shading plate and the multi-zone lens; and A light-transmitting protective bag covers the sapphire-shaped lens, the annular shading sheet and the multi-zone lens. An endoscope module, comprising: A first interior mirror module, including: a horn-shaped lens having a horn portion and a lens portion, wherein the horn portion surrounds the lens portion and has a first annular reflection slope; a first annular light-shielding sheet covering the first annular reflection slope and having a central opening to expose the lens portion; a multi-zone lens having a central zone and an annular zone surrounding the central zone; and an image sensor, wherein a first light from the front side sequentially penetrates the central opening, the lens portion and the central area of the first annular light-shielding plate and is transmitted to the center of the image sensor, and the light from the front is transmitted to the center of the image sensor A second light on the side is reflected to the annular area by the first annular reflection slope after entering the ridge portion, and then converged to the edge area of the image sensor by the annular area; and At least one second interior mirror module is disposed on one side of the first interior mirror module, and includes: an annular horn with a second annular reflection slope; a second annular shading sheet covering the second annular reflection slope; an annular lens; and An annular image sensor, wherein a third light from the side surface is reflected to the annular lens by the second annular reflection slope after entering the annular lens, and then converged to the annular image sensor by the annular lens. The endoscope module as claimed in claim 15, further comprising a fixing rod penetrating through the center of the annular lens, the second annular light shielding plate, the annular lens and the annular image sensor.

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