CN2073119U - Optical system for contact endoscope - Google Patents
Optical system for contact endoscope Download PDFInfo
- Publication number
- CN2073119U CN2073119U CN 90218192 CN90218192U CN2073119U CN 2073119 U CN2073119 U CN 2073119U CN 90218192 CN90218192 CN 90218192 CN 90218192 U CN90218192 U CN 90218192U CN 2073119 U CN2073119 U CN 2073119U
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- China
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- optical system
- lens
- utility
- rod lens
- excellent lens
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Abstract
The utility model provides an improved optical system for contact endoscopes, which is used for deep hole (part blind hole or human visceral foramen) examination. The utility model is characterized in that a layer of materials with low reflectivity is covered on a circular cylinder surface of a rod lens in order to improve the image quality; galileo type telescope optical systems (3) (4) are arranged behind an objective lens. The utility model effectively prevents the generation of parasitic light, and protects the rod lens. In addition, because galileo type telescope optical systems are arranged behind the rod lens, a complete viewing system is formed by galileo type telescope optical systems and the rod lens.
Description
The utility model relates to a kind of optical system for the rigid Contact Endoscope of checking deep hole (part blind hole or human body lumen pore) usefulness.
Among the clear 54-11635 of Jap.P. a kind of Contact Endoscope has been proposed.The characteristics of this mirror are: object lens are elongated excellent lens, its external cylindrical surface polishing, the light of being collected by light collection cylinder reaches the object plane that contacts with excellent lens front end face by the total reflection effect on the excellent lens face of cylinder with light, and the light that is reflected by object plane is again through this excellent lens imaging.This system is owing to be that front end face contacts with object plane, thereby magnification is constant, is convenient to compare inspection.If with this spectroscopy uterus, then do not need in uterine cavity, to inject swollen palace liquid, bring convenience to operation, also can get rid of the influence of blood and mucus to observing.Realize by optical system self owing to throwing light on again, thereby do not need expensive fiber illumination device, the cost of endoscope is reduced, be convenient to promote the use of.
Because the illumination and the imaging of this system all realize by excellent lens, so the elimination veiling glare has just become to improve the key of image quality.Reduce the measure (as adding the light hurdle) of veiling glare though above-mentioned patent has proposed some, the method for preventing stray light is not provided on excellent lens.The imaging light beam is by excellent lens the time, and the face of cylinder that some sees through excellent lens shines on the steel pipe inwall of excellent lens outside.Steel pipe inwall reflectivity is very high, and light enters excellent lens again after its reflection, then form veiling glare, influences image quality.In addition, above-mentioned patent does not provide the complete optical system that can be used for observing.
The purpose of this utility model is: a kind of improved Contact Endoscope optical system is provided, and it can prevent effectively that veiling glare from producing, and can also improve the performance of endoscope, as the shock resistance that improves endoscope etc.Simultaneously, provide a whole set of observation optical system.
The utility model is achieved in that the material of wrapping one deck antiradar reflectivity on the external cylindrical surface of excellent lens.Preferably select thin opaque black paper wood for use.For a complete viewing optical system is provided, the utility model proposes the scheme that a Galileo type telescope optical system is set at the rear of excellent lens.Owing to be provided with the black paper wood of one deck antiradar reflectivity between excellent lens and the steel pipe, the light that is transmitted by the excellent lens intensity during reflected back rod lens again will weaken, and veiling glare is greatly reduced.Simultaneously, increased this layer material, helped excellent lens and when packing steel pipe into, guarantee right alignment.This layer soft material is added in the middle of excellent lens and the steel pipe, also can shield to excellent lens, avoids when running into vibrations, and be broken because excellent lens and steel pipe collide.
Because the front focal plane of excellent lens promptly is a front end face, so observed object plane is on the front focal plane of excellent lens, the imaging light beam that is sent by object point is parallel beam behind excellent lens, behind this parallel beam process telescope optical system still is parallel beam, so whole optical system is equivalent to a magnifier.For the ease of the sealing of system, when carrying out the diopter adjusting, can realize by the object lens of mobile telescope optical system.Eyepiece does not move, and is placed on the outermost of system, can play the effect of cover glass.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.
Accompanying drawing is according to a kind of improved Contact Endoscope optical system diagram that the utility model proposes.(1) is excellent lens among the figure, and (2) for wrapping in the antiradar reflectivity material of excellent lens outer surface, (3) and (4) have formed the Galileo type telescope optical system, and wherein (3) are the object lens of telescope optical system, and (4) are eyepiece.When carrying out the diopter adjusting, object lens (3) move forward and backward along axis.In order to improve image quality, whole optical system cooperates proofreaies and correct aberration.
In order to take into account optical property indexs such as object plane illumination, resolving power, make it reach comparatively ideal state, the visual amplification of whole optical system is preferably elected 4～5 times as.
In the present embodiment, the focal length of excellent lens is 130mm, and the focal length of telephotolens is 46mm, and eyepiece is-19mm.The visual amplification of total system is 4.6 times.
Claims (2)
1, a kind of by the Contact Endoscope optical system of excellent lens as object lens, it is characterized in that the face of cylinder of excellent lens (1) is encased by one deck antiradar reflectivity material (2), in an object lens rear configuration Galileo type telescope optical system (3), (4).
2, optical system according to claim 1, the antiradar reflectivity material (2) that it is characterized in that surrounding excellent lens is the low black paper wood of reflectivity that approaches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90218192 CN2073119U (en) | 1990-08-17 | 1990-08-17 | Optical system for contact endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90218192 CN2073119U (en) | 1990-08-17 | 1990-08-17 | Optical system for contact endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2073119U true CN2073119U (en) | 1991-03-13 |
Family
ID=4897060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90218192 Expired - Lifetime CN2073119U (en) | 1990-08-17 | 1990-08-17 | Optical system for contact endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2073119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707427A (en) * | 2011-03-28 | 2012-10-03 | 富士胶片株式会社 | Endoscope and lighting optical device thereof |
-
1990
- 1990-08-17 CN CN 90218192 patent/CN2073119U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707427A (en) * | 2011-03-28 | 2012-10-03 | 富士胶片株式会社 | Endoscope and lighting optical device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |