CN206557471U - A kind of three-chip type eyepiece - Google Patents
A kind of three-chip type eyepiece Download PDFInfo
- Publication number
- CN206557471U CN206557471U CN201720166349.1U CN201720166349U CN206557471U CN 206557471 U CN206557471 U CN 206557471U CN 201720166349 U CN201720166349 U CN 201720166349U CN 206557471 U CN206557471 U CN 206557471U
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- China
- Prior art keywords
- eyepiece
- eyepiece stalk
- chip type
- stalk
- faces
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Abstract
The utility model is specifically related to a kind of three-chip type eyepiece, including eyepiece stalk, one end is provided with diopter adjustment circle, the other end and is provided with trim ring, the middle spacing collar being provided with for limiting the trim ring position on the eyepiece stalk periphery, positive ocular, positive lens and negative lens are set with successively since the diopter adjustment circle end inside the eyepiece stalk, annular boss is provided with the eyepiece stalk periphery, the eyepiece stalk inwall is provided with annular protrusion, the other end close to the diopter adjustment circle end and is provided with connection screw thread.The utility model purpose is：Negative lens is located at close to image planes side, be conducive to producing larger distance of exit pupil, by the way that an original cemented surface is separated into two faces, the radius of curvature in the two faces can change respectively, ginseng is with aberration correction, and incidence angle of the off-axis ray in the two faces is larger, and the off-axis aberration produced to the other faces of correction is particularly useful, in the case where other performance requires constant, this structure can accomplish bigger operating distance.
Description
Technical field
The utility model belongs to ray machine technical field, and in particular to a kind of three-chip type eyepiece.
Background technology
Three-chip type eyepiece generally has two kinds of structure types：First, near observed as being positive single lens, nearly observer's eyes are negative
Two groups of ternary structurals of the glued part of lens outside, lens arrangement order is positive and negative (Fig. 1).2nd, it is near observed as being gluing
Part, close to image planes here, nearly observer's eyes are positive single lens to negative lens, are also two groups of ternary structurals, lens arrangement order is
Negative and positive just (Fig. 2).Both eyepieces are containing a glued part, and the distance of exit pupil of former is shorter, the emergent pupil of latter away from compared with
It is long.
To long second distance of exit pupil structure, if distance of exit pupil requires longer, the image planes that eyepiece is observed to eyepiece first
The distance in individual face, i.e. operating distance can be shorter, not so to being had a strong impact on as matter can be produced, and this eyepiece is meeting other property sometimes
Can, including on the premise of distance of exit pupil requirement, it is impossible to while meeting the requirement to operating distance.
Utility model content
The purpose of this utility model is：A kind of three-chip type eyepiece is aimed to provide, negative lens is located at close to image planes side, is conducive to
Larger distance of exit pupil is produced, by the way that an original cemented surface is separated into two faces, the radius of curvature in the two faces can be with
Change respectively, join with aberration correction, and incidence angle of the off-axis ray in the two faces is larger, to correcting outside the axle that other faces are produced
Aberration is particularly useful, and in the case where other performance requires constant, this structure can accomplish bigger operating distance.
The purpose of this utility model is achieved through the following technical solutions：
On a kind of three-chip type eyepiece, including eyepiece stalk, the eyepiece stalk periphery one end be provided with diopter adjustment circle, it is another
End is provided with inside trim ring, the middle spacing collar being provided with for limiting the trim ring position, the eyepiece stalk from the diopter
Adjusting ring end starts to be set with positive ocular, positive lens and negative lens successively, and annular is provided with the eyepiece stalk periphery
Boss, the eyepiece stalk inwall is provided with annular protrusion, the other end close to the diopter adjustment circle end and is provided with connection screw thread.
Further, the first sealing ring is set on the annular boss.
Further, spacer ring is provided between the positive lens and the eyepiece stalk, is set between the negative lens and the eyepiece stalk
It is equipped with eyepiece trim ring.
Further, it is provided with the second sealing ring between the positive ocular and the annular protrusion.
Further, it is provided with the 3rd sealing ring between the spacer ring and the eyepiece trim ring.
The beneficial effects of the utility model are as follows：To similar to image planes inside prism, in face of prism incidence side, speculum
Front, the occasion observed after prism, speculum catadioptric by eyepiece is, it is necessary to which eyepiece has larger operating distance, now, negative and positive
Two groups of positive ternary eyepieces are often without enough operating distances.Sometimes object lens can accordingly be increased by increasing eyepiece focal length
Partial focal length solves this problem, and this certainly will increase the appearance and size of system.Using just two group three of the negative and positive proposed here
First eyepiece can obtain bigger operating distance, can better meet system external shape size, distance of exit pupil and operating distance
It is required that.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
It is new to be described in further detail, wherein：
Fig. 1 is the structural representation of the first three-chip type eyepiece of prior art；
Fig. 2 is the structural representation of second of three-chip type eyepiece of prior art；
Fig. 3 is the structural representation of three-chip type eyepiece of the present utility model；
Reference:
11- eyepiece stalks；12- diopter adjustment circles；13- trim rings；14- spacing collars；The positive oculars of 15-；16- positive lens；17-
Negative lens；The sealing rings of 18- first；19- spacer rings；20- eyepiece trim rings；The sealing rings of 21- second；The sealing rings of 22- the 3rd.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.It should be appreciated that it is preferred that real
Example is applied only for explanation the utility model, rather than in order to limit protection domain of the present utility model.
As Figure 1-3, one end, which is provided with, on a kind of three-chip type eyepiece, including eyepiece stalk 11, the periphery of eyepiece stalk 11 regards
Degree adjusting ring 12, the other end are provided with trim ring 13, the middle spacing collar 14 being provided with for limiting the position of trim ring 13, eyepiece stalk 11
Inside is set with outside positive ocular 15, positive lens 16 and negative lens 17, eyepiece stalk 11 successively since the end of diopter adjustment circle 12
Annular boss is provided with disc, the inwall of eyepiece stalk 11 is provided with annular protrusion, the other end close to the end of diopter adjustment circle 12 and set
There is connection screw thread.In embodiment, negative lens is located at close to image planes side, is conducive to producing larger distance of exit pupil, by by originally
A cemented surface be separated into two faces, the radius of curvature in the two faces can change respectively, and ginseng is with aberration correction, and the outer light of axle
Incidence angle of the line in the two faces is larger, and the off-axis aberration produced to the other faces of correction is particularly useful, in other performance requirement not
In the case of change, this structure can accomplish bigger operating distance.
First sealing ring 18 is set in the present embodiment, on annular boss.In embodiment, the sealing set on annular boss
First sealing ring is set in groove, is the observation effect of influence eyepiece in order to prevent vapor, dust etc. from entering inside eyepiece
Really.
In the present embodiment, spacer ring 19 is provided between positive lens 16 and eyepiece stalk 11, is set between negative lens 17 and eyepiece stalk 11
There is eyepiece trim ring 20.In embodiment, by setting spacer ring to adjust the distance between positive ocular and positive lens, by setting eyepiece
Trim ring is to ensure the distance between positive lens and negative lens, it is ensured that preferably observed with eyepiece.
In the present embodiment, the second sealing ring 21 is provided between positive ocular 15 and annular protrusion.In embodiment, by
The main function that the second sealing ring is set between annular protrusion and positive ocular is to prevent vapor, dust etc. from entering mesh
Inside mirror, the observing effect of eyepiece is influenceed；Positive ocular is avoided to contact the positive ocular table of scuffing firmly with annular protrusion simultaneously
Face.
In the present embodiment, the 3rd sealing ring 22 is provided between spacer ring 19 and eyepiece trim ring 20.In embodiment, by spacer ring
3rd sealing ring is set between eyepiece trim ring, it is to avoid the contact force of eyepiece trim ring and positive lens is excessive.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should
Cover among right of the present utility model.
Claims (5)
1. a kind of three-chip type eyepiece, it is characterised in that：Including eyepiece stalk, one end is provided with diopter tune on the eyepiece stalk periphery
Pitch circle, the other end be provided with inside trim ring, the middle spacing collar being provided with for limiting the trim ring position, the eyepiece stalk from
The diopter adjustment circle end starts to be set with positive ocular, positive lens and negative lens successively, is set on the eyepiece stalk periphery
Annular boss is equipped with, the eyepiece stalk inwall is provided with annular protrusion, the other end close to the diopter adjustment circle end and is provided with company
Connect screw thread.
2. a kind of three-chip type eyepiece according to claim 1, it is characterised in that：First is set to seal on the annular boss
Circle.
3. a kind of three-chip type eyepiece according to claim 1, it is characterised in that：Set between the positive lens and the eyepiece stalk
Spacer ring is equipped with, eyepiece trim ring is provided between the negative lens and the eyepiece stalk.
4. a kind of three-chip type eyepiece according to claim 1, it is characterised in that：The positive ocular and the convex annular
The second sealing ring is provided between rising.
5. a kind of three-chip type eyepiece according to claim 3, it is characterised in that：Set between the spacer ring and the eyepiece trim ring
It is equipped with the 3rd sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166349.1U CN206557471U (en) | 2017-02-23 | 2017-02-23 | A kind of three-chip type eyepiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166349.1U CN206557471U (en) | 2017-02-23 | 2017-02-23 | A kind of three-chip type eyepiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206557471U true CN206557471U (en) | 2017-10-13 |
Family
ID=60361122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720166349.1U Active CN206557471U (en) | 2017-02-23 | 2017-02-23 | A kind of three-chip type eyepiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206557471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109509A1 (en) * | 2017-12-06 | 2019-06-13 | 深圳光峰科技股份有限公司 | Lens module and projection apparatus |
-
2017
- 2017-02-23 CN CN201720166349.1U patent/CN206557471U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109509A1 (en) * | 2017-12-06 | 2019-06-13 | 深圳光峰科技股份有限公司 | Lens module and projection apparatus |
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