CN216526519U

CN216526519U - Electronic endoscope lens

Info

Publication number: CN216526519U
Application number: CN202122902251.7U
Authority: CN
Inventors: 杨兴强; 王了
Original assignee: Chongqing Jinshan Medical Robot Co ltd
Current assignee: Chongqing Jinshan Medical Robot Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-13
Anticipated expiration: 2031-11-24

Abstract

The utility model relates to the technical field of endoscopes, in particular to an electronic endoscope lens. The utility model discloses an electronic endoscope lens, which comprises a front end seat, wherein a light guide prism is arranged on the front end seat, the light guide prism is provided with a bending section, the end part of the bending section and the end part of the front end seat form a detection inclined plane together, and the bending section bends towards the top of the detection inclined plane. The utility model solves the technical problems that the optical collection area and the irradiation area of the existing endoscope lens with the angle are not consistent and a blind area exists.

Description

Electronic endoscope lens

Technical Field

The utility model relates to the technical field of endoscopes, in particular to an electronic endoscope lens.

Background

Electronic endoscopes are widely used in fields such as observation and treatment of a living body (body cavity) and inspection and repair in industrial kits. Endoscope systems are widely used in medical examinations and surgeries, especially in minimally invasive surgeries, and are not alternatives.

At the front end of the endoscope, light of the optical fiber is guided out through the light guide prism, irradiates on an object or human tissue, collects reflected light through the front end collecting area, and then converts the light signal into a signal which can be used at the rear end through the photoelectric sensor assembly. The refraction angle is consistent when the optical fiber is guided out and collected, and is influenced by the material. When the endoscope is used in a narrow space or a human body, the endoscope is severely limited by the space, and a direct projection scheme is commonly adopted, so that the most reflected light can be collected. However, the direct projection scheme is very difficult for the region which needs to observe the axis of the object, the lens needs to be deflected by a large space angle, and in order to change the problem, the front end of the lens is usually made into an angle, so that a certain region at the rear end of the axis can be observed only by deflecting the lens by a small angle. However, in the using process, the collecting area is not consistent with the irradiation area, and a blind area exists, so that the data acquisition area can be influenced to a certain extent and even becomes small.

Those skilled in the art have therefore endeavored to develop an electronic endoscope lens.

SUMMERY OF THE UTILITY MODEL

In view of the above defects in the prior art, the present invention discloses an electronic endoscope lens, which aims to solve the technical problem that the optical collection area of the angled endoscope lens is inconsistent with the illumination area, and a blind area exists.

In order to achieve the purpose, the utility model provides an electronic endoscope lens, which comprises a front end seat, wherein a light guide prism is arranged on the front end seat, the light guide prism is provided with a bending section, the end part of the bending section and the end part of the front end seat form a detection inclined plane together, and the bending section bends towards the top of the detection inclined plane.

Preferably, the angle E of the bending section and the angle F of the detection slope are complementary angles.

Preferably, the angle of the detection inclined plane is 10-60 degrees.

Preferably, the light guide prisms are located at the top and the bottom of the detection inclined plane, the light guide prisms correspondingly located at the top and the bottom of the detection inclined plane are in one group, and the number of the groups of the light guide prisms is at least one group.

Preferably, the front end seat is provided with an installation groove, and the light guide prism is installed in the installation groove.

Preferably, the light guide prism is externally buckled with a cover, and the cover is positioned in the mounting groove.

Preferably, the middle part of front end seat is equipped with the mounting hole, be equipped with the collection prism in the mounting hole, the front end of collecting the prism is installed and is collected the lens, and the rear end of collecting the prism is connected with the photoelectric sensor subassembly, collect the lens with photoelectric sensor subassembly light signal is connected.

Preferably, the peripheries of the front end seat and the cover are sleeved with head end covers.

Preferably, the rear ends of the head end cover and the cover are connected with a mirror rod.

The utility model has the beneficial effects that:

through setting up light guide prism as there being crooked section, change the angle of refraction, and with the angle of crooked section with the angle of surveying the inclined plane sets up to be each other for complementing the angle effect best, only needs to deflect certain low-angle with the camera lens and just can observe the certain region of axis rear end, is convenient for use in narrow and small space to because the change of the angle of refraction of light guide prism, the collection area is in the irradiation region in the use, does not have the blind area, makes data acquisition more accurate and high-efficient. Meanwhile, the split structure design of the front end seat, the light guide prism, the collecting prism and the cover is favorable for processing and mounting the bent section of the light guide prism.

Drawings

FIG. 1 is an overall cross-sectional structural schematic of an embodiment of the present invention;

FIG. 2 is a schematic external top view of the present invention;

FIG. 3 is a schematic view of the internal cross-section of the present invention;

FIG. 4 is a schematic diagram of a light guiding prism of the present invention;

FIG. 5 is a schematic front view of the split structure of the present invention;

FIG. 6 is a schematic right-view of a split structure of the present invention;

FIG. 7 is a schematic diagram of a prior art I;

fig. 8 is a schematic structural diagram of a second prior art.

In the above drawings: 1. collecting the lens; 2. a front end seat; 21. mounting grooves; 3. a cover; 4. a light guide prism; 41. a curved section; 5. detecting an inclined plane; 6. a photosensor assembly; 7. a mirror rod; 8. a head end shield; 9. an object.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 3, the present invention provides an electronic endoscope lens, which includes a front end base 2, and a light guide prism 4 is mounted on the front end base 2. As shown in fig. 4, the light guiding prism 4 is provided with a curved section 41, an end of the curved section 41 and an end of the front end base 2 form the detection inclined plane 5 together, and the curved section 41 is curved to the top of the detection inclined plane 5. The angle E of the curved section 41 is complementary to the angle F of the detection slope 5. In the present embodiment, the angle F of the detection slope 5 is 40 °, the bending angle E of the light guide prism 4 is 140 °, so that the collection area a is located in the illumination area B, the occurrence of a blind area is avoided, and the illumination area B is made larger.

Fig. 7 shows a typical direct illumination scheme, where C is the angle of refraction of the material, a is the collection area, and B is the prism-derived illumination area, as compared to the prior art scheme shown in fig. 7. Although the direct projection scheme can collect the most reflected light, when the material is selected, the angle of C, A, B is a fixed value, so it is difficult to observe the area behind the axis of the object, and it is difficult to deflect the lens by a large spatial angle and a large angular deflection in a narrow space. In the embodiment shown in fig. 8, the front end of the lens is angled, and although a certain area of the rear end of the axis can be observed by deflecting the lens by a small angle, the collecting area a and the illuminating area B have non-coincident blind areas D1 and D2.

As shown in fig. 6, the front seat 2 is provided with an installation groove 21, the light guide prism 4 is installed in the installation groove 21, the cover 3 is buckled outside the light guide prism 4, and the cover 3 is located in the installation groove 21.

In this embodiment, the angle E through with curved segment 41 and the angle F of surveying inclined plane 5 set up to be complementary angle each other, only need to deflect certain small-angle with the camera lens and just can observe the certain region of axis rear end, are convenient for use in narrow and small space to because the change of the refraction angle of light guide prism 4, collect regional a in the use and be in irradiation region B, do not have the blind area, make data acquisition more accurate and high-efficient. Meanwhile, as shown in fig. 5 and 6, the fabrication and installation of the bent section 41 of the light guide prism 4 are facilitated by the split structural design of the front end base 2, the light guide prism 4, the collection prism, and the cover 3.

In addition, the light guide prisms 4 are located at the top and bottom of the detection slope 5, and the light guide prisms 4 corresponding to the top and bottom of the detection slope 5 are in one group, and the number of the groups of the light guide prisms 4 is at least one group. In this embodiment, the number of the light guide prisms 4 is one, and of course, a plurality of sets of light guide prisms 4 with smaller specifications may be correspondingly disposed at the top and the bottom of the detection inclined plane 5, so as to obtain a larger luminous flux, and make the detection irradiation clearer.

As shown in fig. 1, the middle of the front end base 2 is provided with a mounting hole, a collecting prism is arranged in the mounting hole, a collecting lens 1 is installed at the front end of the collecting prism, the rear end of the collecting prism is connected with a photoelectric sensor assembly 6, and the collecting lens 1 is connected with the photoelectric sensor assembly 6 through optical signals. The light reflected by the target object 9 to be detected is collected through the collecting lens 1, and then is transmitted through the photoelectric sensor assembly 6, photoelectric signals are converted, and finally, the image is obtained. Meanwhile, the periphery of the front end seat 2 and the periphery of the cover 3 are sleeved with a head end cover 8, the front interface G and the rear interface G of the head end cover 8 are fixed in a welding mode, and the rear ends of the head end cover 8 and the cover 3 are connected with a mirror rod 7.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. An electronic endoscope lens, characterized by: including front end seat (2), install light guide prism (4) on front end seat (2), light guide prism (4) are equipped with crooked section (41), the tip of crooked section (41) forms jointly with the tip of front end seat (2) and surveys inclined plane (5), crooked section (41) to the top of surveying inclined plane (5) is crooked.

2. The electronic endoscope lens of claim 1 wherein: the angle (E) of the bending section (41) and the angle (F) of the detection inclined plane (5) are complementary angles.

3. The electronic endoscope lens of claim 2 wherein: the size of the angle (F) of the detection inclined plane (5) is 10-60 degrees.

4. The electronic endoscope lens of claim 1 wherein: the light guide prisms (4) are positioned at the top and the bottom of the detection inclined plane (5), the light guide prisms (4) correspondingly positioned at the top and the bottom of the detection inclined plane (5) are in a group, and the number of the groups of the light guide prisms (4) is at least one group.

5. The electronic endoscope lens of claim 4 wherein: be equipped with mounting groove (21) on front end seat (2), install in mounting groove (21) light guide prism (4).

6. The electronic endoscope lens of claim 5 wherein: the light guide prism (4) is externally buckled with a cover (3), and the cover (3) is positioned in the mounting groove (21).

7. The electronic endoscope lens of claim 5 wherein: the middle part of front end seat (2) is equipped with the mounting hole, be equipped with the collection prism in the mounting hole, collect the front end of prism and install collection lens (1), the rear end of collecting the prism is connected with photoelectric sensor subassembly (6), collect lens (1) with photoelectric sensor subassembly (6) light signal connects.

8. The electronic endoscope lens of claim 7 wherein: the peripheries of the front end seat (2) and the cover (3) are sleeved with a head end cover (8).

9. The electronic endoscope lens of claim 8 wherein: the rear ends of the head end cover (8) and the cover (3) are connected with a mirror rod (7).