CN104932095A - Endoscopes for endoscopic image capture - Google Patents

Abstract

The present invention discloses an endoscope for endoscopic image acquisition, comprising an endoscope optical module, wherein the endoscope optical module comprises a lens barrel, a photosensitive element arranged in the lens barrel and a lens arranged at the end of the lens barrel, wherein the lens is formed of a plastic material and is molded at one time with the lens barrel to form an integrated structure, which has a simple process and is convenient to manufacture. Moreover, due to the integrated structure, the endoscope of the present invention has a smaller volume, is more flexible and convenient to use, and meets extremely high reliability requirements for application such as waterproofing and sterilization.

Description

Endoscopes for endoscopic image capture

technical field

The invention relates to an endoscope for capturing endoscopic images.

Background technique

The endoscope is composed of a flexible part, a light source and a set of lenses. It is a commonly used medical device or a microporous detection device. It is often used for minimally invasive detection of the human body or equipment maintenance. It can directly peep into the changes of relevant parts or components. Therefore, under the premise of ensuring the imaging quality, the smaller the size of the endoscope, the better. At present, endoscopes use a lens group composed of lenses. Due to the limitations of the lens technology and assembly process, the size of the endoscope is difficult to achieve. Therefore, the required aperture is also larger, which means greater trauma to the human body or greater use restrictions.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides an endoscope for capturing endoscopic images with small volume and simple process.

The technical solution adopted by the present invention to solve its technical problems is:

An endoscope for capturing endoscopic images, including an endoscope optical module, the endoscope optical module includes a lens barrel, a photosensitive element arranged in the lens barrel, and a lens arranged at the end of the lens barrel. The lens is molded with plastic material and molded with the lens barrel at one time.

The lens includes a front lens part protruding from the end of the lens barrel and a rear lens part arranged inside the lens barrel. The front lens part and the rear lens part are aspheric structures.

The front lens part and the rear lens part are diffractive optical lens structures.

The photosensitive element is a CMOS sensor.

The photosensitive element is arranged at the rear end of the lens barrel, and the rear end of the lens barrel is provided with encapsulation resin.

A light-shielding layer is provided on the side of the lens.

It also includes a minimally invasive mirror base, and the minimally invasive mirror base is provided with an endoscope hole for installing an endoscope optical module and a catheter installation hole for installing a minimally invasive catheter.

The endoscope hole is arranged parallel to the catheter installation hole.

The end face of the minimally invasive mirror base is also provided with at least one set of LED lighting sources.

The beneficial effects of the present invention are: the endoscope used for endoscopic image capture includes an endoscope optical module, and the endoscope optical module includes a lens barrel, a photosensitive element arranged in the lens barrel, and a photosensitive element arranged in the lens barrel. The lens at the end of the barrel, the lens is molded with plastic material and formed with the lens barrel at one time to form an integrated structure, the process is simple, the manufacture is convenient, and because of the integrated structure, the volume of the present invention is smaller, and the use is more flexible and convenient , and the application requirements for waterproofing and sterility have reached extremely high reliability.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic cross-sectional view of the present invention;

Fig. 2 is a schematic structural view of the minimally invasive lens holder of the present invention.

Detailed ways

Referring to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 are structural schematic diagrams of a specific embodiment of the present invention. As shown in the figure, the endoscope for endoscopic image capture includes an endoscope optical module, and The sight glass optical module includes a lens barrel 1, a photosensitive element 2 set in the lens barrel 1, and a lens 3 set at the end of the lens barrel 1. The lens 3 is molded with plastic material and molded together with the lens barrel 1 to form an integral body. The structure and process are simple, and the manufacture is convenient, and because of the integrated structure, the volume of the present invention is smaller, the use is more flexible and convenient, and the application requirements for waterproofing and sterility are extremely high.

As shown in the figure, the lens 3 includes a front lens portion 31 protruding from the end of the lens barrel 1 and a rear lens portion 32 disposed inside the lens barrel 1, the front lens portion 31 and the rear lens portion 32 are aspherical surfaces Structure and DOE diffractive optical lens structure, aspherical structure and DOE diffractive optical element, have incomparable advantages in improving the optical performance of the optical system and reducing the overall size and weight of the optical system. In the present invention, by adopting the aspheric structure and The DOE diffractive optical lens structure greatly reduces the volume of the lens 3 and reduces light spots to form a beam of light with the best imaging effect and a focal point to improve the imaging quality of the present invention.

Preferably, a light-shielding layer 33 is provided on the side of the lens 3, and the light-shielding layer 33 can be a coating, a coating, etc., to achieve a light-shielding effect, shield stray light, and improve image quality.

Preferably, the photosensitive element 2 is arranged at the rear end of the lens barrel 1, and the rear end of the lens barrel 1 is provided with an encapsulating resin 4 to improve the sealing performance of the present invention and ensure its waterproofness and sterility.

Described photosensitive element 2 can adopt CMOS sensor or CCD sensor, as preferably, in the present invention, adopts CMOS sensor, as the CMOS sensor ov9594 of omnivision company, ov6930 etc., below according to different CMOS sensor model to this Invention as a concrete implementation example:

As can be seen from the above-mentioned embodiments, the volume of the endoscope can be greatly reduced through the integrated lens and lens barrel, and different CMOS sensor models, light-passing areas, module lengths, and field of view angles can be configured to achieve Meet different usage needs.

Preferably, the present invention also includes a minimally invasive mirror base 8, which is provided with an endoscope hole 81 for installing the endoscope optical module 9 and a catheter installation for installing a minimally invasive catheter. hole 82, wherein, the endoscope hole 81 is arranged in parallel with the catheter installation hole 82, so that the present invention can be used as a minimally invasive endoscope for image capture in minimally invasive surgery using a catheter, and for minimally invasive surgery Real-time monitoring and guidance.

Preferably, two groups of symmetrical LED lighting sources 83 are arranged on the end face of the minimally invasive mirror base 8 to improve the quality of image capture and facilitate minimally invasive surgery.

The preferred implementation of the present invention has been described in detail above. Of course, the present invention can also adopt different forms from the above-mentioned embodiments. Those skilled in the art can make equivalent transformations or corresponding equivalents without violating the spirit of the present invention. Any changes should fall within the protection scope of the present invention.

Claims (9)

1. An endoscope for capturing endoscopic images, characterized in that it includes an endoscope optical module, and the endoscope optical module includes a lens barrel (1), a photosensitive sensor set in the lens barrel (1) The element (2) and the lens (3) arranged at the end of the lens barrel (1), the lens (3) is molded with plastic material and molded with the lens barrel (1) at one time. 2. The endoscope for capturing endoscopic images according to claim 1, characterized in that the lens (3) includes a front lens portion (31) protruding from the end of the lens barrel (1) and a set In the rear lens part (32) inside the lens barrel (1), the front lens part (31) and the rear lens part (32) are aspheric structures. 3. The endoscope for capturing endoscopic images according to claim 2, characterized in that the front lens part (31) and the rear lens part (32) are diffractive optical lens structures. 4. The endoscope for capturing endoscopic images according to claim 1, characterized in that: the photosensitive element (2) is a CMOS sensor. 5. The endoscope for capturing endoscopic images according to claim 1, characterized in that: the photosensitive element (2) is arranged at the rear end of the lens barrel (1), and the rear end of the lens barrel (1) The end is provided with encapsulating resin (4). 6. The endoscope for capturing endoscopic images according to claim 1, characterized in that a light blocking layer (33) is provided on a side of the lens (3). 7. The endoscope for capturing endoscopic images according to claim 1, characterized in that it further comprises a minimally invasive mirror base (8), and the minimally invasive mirror base (8) is provided with a An endoscope hole (81) of the speculum optical module and a catheter installation hole (82) for installing a minimally invasive catheter. 8. The endoscope for capturing endoscopic images according to claim 7, characterized in that: the endoscope hole (81) is arranged parallel to the catheter installation hole (82). 9 . The endoscope for capturing endoscopic images according to claim 7 , characterized in that: at least one set of LED lighting sources ( 83 ) are arranged on the end face of the minimally invasive mirror base ( 8 ). 10 .