CN2893722Y

CN2893722Y - Flexible light cone

Info

Publication number: CN2893722Y
Application number: CN 200620058527
Authority: CN
Inventors: 刘俊锋; 罗新华
Original assignee: Beifang Optical Communication Industry Co Ltd Chonghua Guangdong
Current assignee: Guangzhou Hongsheng Optical Technology Co., Ltd.
Priority date: 2006-04-30
Filing date: 2006-04-30
Publication date: 2007-04-25
Anticipated expiration: 2016-04-30

Abstract

The utility model relates to an optical fiber element, more specifically a flexible light cone, the two ends of which is made up by hard optical fibers with one end face larger and the other end face smaller. The middle part of the cone body is flexible optical fiber. The light cone incorporate ordinary light cone beams into one piece which delivers no coupling loss, is applied in detection apparatus such as endoscopes, makes the apparatus structure simple and compact, increases the illuminant degree and image resolution obviously.

Description

Flexible light cone

Technical field

The utility model relates to a kind of fibre optic element, specifically is that a kind of optically focused in the detection instruments such as industry, medical endoscope, biography light, biography picture or image of can be applicable to amplifies the element that dwindles.

Background technology

The coupling device of a hard light cone as light arranged between the cold light source of general industry medical endoscope and the light guide bundles or between coherent fiber bundle and the view window, wherein the small end of light cone contacts with light guide bundles or coherent fiber bundle end face, and big end then matches with cold light source optical cable or view window.Obviously, because light cone is the element that independently separates with light guide bundles or coherent fiber bundle, the end face that they are in contact with one another has certain spacing, though can carry out the transmission of light, the coupling loss of light is not little, and often brightness is not enough or image blurring therefore to cause endoscope.

Summary of the invention

The purpose of this utility model is to overcome deficiency of the prior art, and a kind of simple and practical flexible light cone is provided, and light cone, light beam (or coherent fiber bundle) are made one, has save the optically-coupled between them, thereby reduces optical energy loss.

For achieving the above object, the utility model provides a kind of flexible light cone, and it is formed by the compound assembly of optical fiber monofilament of some certain-lengths, the cone two ends is made of rigid optical fiber, and center section is a flexible optical fibre, and its both ends of the surface diameter does not wait, one end face is big, and the other end is little.

Described optical fiber monofilament is the concentric body that three kinds of glass are formed, and its inner core is high refracting glass, and the centre is low refracting glass, and exocuticle is a solubility in acid glass.

Flexible light cone of the present utility model has realized that light cone and flexible light beam (or coherent fiber bundle) are integrated, and no luminous energy coupling loss is applied to endoscope, and its illuminance or image definition obviously improve.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model embodiment 2;

Fig. 3 is an optical fiber monofilament structure synoptic diagram of the present utility model;

Fig. 4 is the rigid optical fiber structure synoptic diagram of two ends xsect of the present utility model;

Fig. 5 is the use synoptic diagram of the utility model in endoscope.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment 1: flexible light cone as shown in Figure 1 is to get 26000 optical fiber monofilament to process (optical fiber monofilament structure such as Fig. 3 through the compound boundling of accurate arrangement, the high refracting glass of a-wherein, b-hangs down refracting glass, c-solubility in acid glass), the cone center section forms flexible loose optical fiber, cone small end face diameter d=1.5mm, large end face diameter D=6mm by sour molten method with optical fiber monofilament exodermis c dissolving, the long L=200mm of flexible optical fibre, the rigid optical fiber structure of two ends xsect as shown in Figure 4.

Fig. 5 is the example that flexible light cone of the present utility model is installed on endoscope, the big end H of the wherein flexible light cone cooperation that contacts with the optical cable E of cold light source, input light imports detection place swimmingly by flexible light cone always, it is minimum that the luminous energy transmission is in the perfect condition loss, and the assembling of endoscope simultaneously is also fairly simple convenient compact.

Embodiment 2: see Fig. 2, this routine flexible light cone is except that cone generatrices changes to some extent, and all the other are with example 1.

Claims

1, a kind of flexible light cone, it is formed by the compound assembly of optical fiber monofilament of some certain-lengths, and cone has two end faces that diameter is different, wherein an end face is big, the other end is little, it is characterized in that the cone two ends is made of rigid optical fiber, and is flexible optical fibre partly in the middle of the cone.

2, flexible light cone according to claim 1 is characterized in that described optical fiber monofilament is the concentric body that three kinds of glass are formed, and inner core is high refracting glass, and the centre is low refracting glass, and exocuticle is a solubility in acid glass.

3, flexible light cone according to claim 1 is characterized in that described both ends of the surface diameter is respectively 0.5-4mm and 1-10mm, the long 20-1500mm of flexible optical fibre.