CN206975307U - A kind of big visual field airbome low light night vision observation endoscope objective lenses - Google Patents
A kind of big visual field airbome low light night vision observation endoscope objective lenses Download PDFInfo
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- CN206975307U CN206975307U CN201720830337.4U CN201720830337U CN206975307U CN 206975307 U CN206975307 U CN 206975307U CN 201720830337 U CN201720830337 U CN 201720830337U CN 206975307 U CN206975307 U CN 206975307U
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Abstract
The utility model discloses a kind of big visual field airbome low light night vision observation endoscope objective lenses, the two generation gleam image intensifiers that surpass for being Φ 18mm for the effective input face of negative electrode are designed, are mainly made up of object lens outer barrel, object lens inner cylinder and two groups of low-light lens groups；Described object lens inner cylinder is loaded in object lens outer barrel, and two groups of low-light lens groups are arranged in object lens inner cylinder, the stationary arrangement in same optical axis；The low-light lens group of front end is made up of three simple lenses, and the low-light lens group of rear end is made up of the cemented doublet of biconvex lens and both sides.The object lens can improve the light collecting light ability of system in the case where meeting image quality, increase the field of view of system, improve man-machine efficacy.Compared with existing object lens, the object lens can meet that achromatism and high-resolution picture matter requirement, and can realize the minimum requirement of the length under object lens of large relative aperture and big visual field in lll night vision object lens 400nm~900nm wide spectral ranges.
Description
Technical field
Technical field of optical instrument is the utility model is related to, more particularly to a kind of driver's microlight night-viewing endoscope objective lenses.
Background technology
Airbome low light night vision peephole is a kind of lll night vision imaging system using the helmet as carrier, utilizes the star at night
The natural low-light such as light, moonlight improves visual characteristic of the pilot under dark surrounds by opto-electronic conversion image intensifying technology；Its
Secondary light source need not be used, overcomes the weakness that active night observation device easily exposes itself.Because night vision goggles are suspended on head
The front end of helmet, if weight is excessive, system gravity is caused to move forward, long-term use can damage to the cervical vertebra of pilot；Meanwhile
If visual field is too small pilot can be caused to produce certain viewing blind zone, need hunt to observe in use, add work
Make load, influence observing effect.In order to improve the man-machine efficacy of system, it is desirable to which it is good in guarantee that endoscope objective lenses are observed in airbome low light night vision
Accomplish lightness, big visual field while the optical property got well.Because weight and visual field are two conflicting indexs, cause mesh
Object lens used in preceding are heavier or visual field is too small, it is impossible to while take into account the requirement of man-machine efficacy and performance indications.
Utility model content
The purpose of the utility model be provided on the premise of quality of optical imaging is ensured a kind of lightness, big visual field it is airborne
Microlight night-viewing endoscope objective lenses, to solve, current airbome low light night vision peephole is difficult to take into account man-machine efficacy simultaneously and performance refers to
Target problem.
To achieve the above object, technical scheme is used by the utility model：
A kind of big visual field airbome low light night vision observation endoscope objective lenses, it is mainly saturating by object lens outer barrel, object lens inner cylinder and two groups of low-lights
Microscope group forms；Described object lens inner cylinder is loaded in object lens outer barrel, and two groups of low-light lens groups are arranged in object lens inner cylinder, same
Stationary arrangement on one optical axis；
The low-light lens group of front end is made up of three simple lenses, and three simple lenses are concave-convex type meniscus lens；Rear end
Low-light lens group is the first cemented doublet, the 4th simple lens and the second cemented doublet from front to back；First cemented doublet
Glued integral by the biconcave lens of front end and the biconvex lens of rear end that mutually coincide, the 4th simple lens is biconvex lens, the
Two cemented doublets are glued integral by the biconvex lens of front end and the biconcave lens of rear end that mutually coincide.
Guide pin is equipped between object lens outer barrel 1 and object lens inner cylinder, guide pin is by the focusing handwheel control on object lens outer barrel
System.
Two groups of low-light lens groups are isolated by the dome in object lens inner cylinder.
The low-light lens group of front end is that the first simple lens, the second simple lens and the 3rd are single saturating from front to back by three simple lenses
Mirror；First simple lens diameter is maximum, and the second simple lens takes second place, and the 3rd simple lens diameter is minimum.
First cemented doublet of the low-light lens group of rear end, the 4th simple lens and the second cemented doublet diameter are identical.
The simple lens of low-light lens group between three simple lens outer rims of the low-light lens group of front end and in rear end
Between the cemented doublet outer rim of both sides, eyeglass spacer ring is equipped with.
Eyeglass trim rings are equiped between object lens outer barrel and object lens inner cylinder both ends.
The beneficial effects of the utility model are：
The object lens are that Φ 18mm surpass the design of two generation gleam image intensifiers for the effective input face of negative electrode, what such scheme made
Object lens, topology layout is reasonable, can be with angle pencil of ray outside active balance axle by the first simple lens, the second simple lens and the 3rd simple lens
The senior aberration of introducing, the angle of flare of light beam is improved, the unusual cemented surface introduced by the second cemented doublet is not only advantageous to
The correction that advanced negative spherical aberration and advanced negative-appearing image dissipate on axle, further improves the oblique spherical aberration of axle outer light beam glazed thread, realizes big visual field
Under object lens of large relative aperture；Wide spectrum aberration can be effectively eliminated by introducing the first cemented doublet, is realized under wide spectrum
Blur-free imaging；By the 3rd simple lens of introducing can effective sharing system focal power, increase the relative aperture of system.
The object lens can improve the light collecting light ability of system in the case where meeting image quality, increase the field of view of system, improve people
Machine effect.Compared with existing object lens, the object lens can meet colour killing in lll night vision object lens 400nm~900nm wide spectral ranges
Poor and high-resolution as matter requirement, and can realizes the minimum requirement of the length under object lens of large relative aperture and big visual field.
Brief description of the drawings
Fig. 1 is the utility model mechanical-optical setup schematic diagram.
In figure：1. object lens outer barrel, 2. object lens inner cylinders, 3. guide pins, 4. focusing handwheels, 5. first simple lenses, 6. second is single saturating
Mirror, 7. the 3rd simple lenses, 8. first cemented doublets, 9. the 4th simple lenses, 10. second cemented doublets, 11. eyeglass spacer rings,
12. eyeglass trim rings, 13. domes.
Embodiment
A kind of structure of big visual field airbome low light night vision observation endoscope objective lenses of the utility model is as shown in Figure 1.For ease of describing,
Using the left side in scheming as front end, right side is as rear end.
Referring to Fig. 1, a kind of big visual field airbome low light night vision observation endoscope objective lenses of the utility model, mainly by object lens outer barrel 1, thing
Mirror inner cylinder 2 and two groups of low-light lens group compositions.Described object lens inner cylinder 2 is loaded in object lens outer barrel 1, in object lens outer barrel 1 and object lens
Guide pin 3 is equipped between inner cylinder 2, guide pin 3 is controlled by the focusing handwheel 4 on object lens outer barrel 1.Guide pin 3 and focusing handwheel 4
Structure and control method are same as the prior art, are no longer described in detail herein.Two groups of low-light lens groups are arranged on object lens inner cylinder 2
In, the stationary arrangement in same optical axis, it is isolated by the diaphragm 13 in object lens inner cylinder 2.
The low-light lens group of front end is made up of three simple lenses, and three simple lenses are concave-convex type meniscus lens, in the past extremely
It is the first simple lens 5, the second simple lens 6 and the 3rd simple lens 7 afterwards.The diameter of first simple lens 5 is maximum, and the second simple lens 6 takes second place,
The diameter of 3rd simple lens 7 is minimum.
The low-light lens group of rear end is the first cemented doublet 8, the 4th simple lens 9 and the second cemented doublet from front to back
10.First cemented doublet 8 is glued integral by the biconcave lens of front end and the biconvex lens of rear end that mutually coincide, and the 4th is single
Lens 9 are biconvex lens, and the second cemented doublet 10 is by the biconvex lens of front end and the biconcave lens glue of rear end that mutually coincide
Integrator.First cemented doublet 8, the 4th simple lens 9 are identical with the diameter of the second cemented doublet 10.
The simple lens of low-light lens group between three simple lens outer rims of the low-light lens group of front end and in rear end
Between the cemented doublet outer rim of both sides, eyeglass spacer ring 11 is equipped with.Filled between object lens outer barrel 1 and the both ends of object lens inner cylinder 2
Provided with eyeglass trim rings 12.Routinely mounting means arranges each component.
The two generation gleam image intensifiers that surpass that the utility model is Φ 18mm for the effective input face of negative electrode design, and realize width
Achromatism and the high-resolution requirement minimum as the length under matter requirement and object lens of large relative aperture, big visual field in spectral region.
Claims (7)
1. a kind of big visual field airbome low light night vision observation endoscope objective lenses, mainly micro- by object lens outer barrel (1), object lens inner cylinder (2) and two groups
Optical lens group forms, and for described object lens inner cylinder (2) loaded in object lens outer barrel (1), two groups of low-light lens groups are arranged on object lens
In inner cylinder (2), the stationary arrangement in same optical axis；It is characterized in that：
The low-light lens group of front end is made up of three simple lenses, and three simple lenses are concave-convex type meniscus lens；The low-light of rear end
Lens group is the first cemented doublet (8), the 4th simple lens (9) and the second cemented doublet (10) from front to back；First pair of glue
It is glued integral by the biconcave lens of front end and the biconvex lens of rear end that mutually coincide to close lens (8), the 4th simple lens (9) is
Biconvex lens, the second cemented doublet (10) compose one by the biconvex lens for the front end mutually coincideing and the biconcave lens of rear end
Body.
2. big visual field airbome low light night vision observation endoscope objective lenses according to claim 1, it is characterised in that：In object lens outer barrel
(1) guide pin (3) is equipped between object lens inner cylinder (2), guide pin (3) is controlled by the focusing handwheel (4) on object lens outer barrel (1)
System.
3. big visual field airbome low light night vision observation endoscope objective lenses according to claim 1, it is characterised in that：Two groups of low-light lens
Group is isolated by the diaphragm (13) in object lens inner cylinder (2).
4. big visual field airbome low light night vision observation endoscope objective lenses according to claim 1, it is characterised in that：The low-light of front end is saturating
Microscope group is the first simple lens (5), the second simple lens (6) and the 3rd simple lens (7) from front to back by three simple lenses；First is single saturating
Mirror (5) diameter is maximum, and the second simple lens (6) takes second place, and the 3rd simple lens (7) diameter is minimum.
5. big visual field airbome low light night vision observation endoscope objective lenses according to claim 1, it is characterised in that：The low-light of rear end is saturating
The first cemented doublet (8), the 4th simple lens (9) of microscope group are identical with the second cemented doublet (10) diameter.
6. big visual field airbome low light night vision observation endoscope objective lenses according to claim 1, it is characterised in that：Low-light in front end
Between three simple lens outer rims of lens group and outside the simple lens of low-light lens group and the cemented doublet of both sides of rear end
Between edge, eyeglass spacer ring (11) is equipped with.
7. big visual field airbome low light night vision observation endoscope objective lenses according to claim 1, it is characterised in that：In object lens outer barrel
(1) eyeglass trim rings (12) are equiped between object lens inner cylinder (2) both ends.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830337.4U CN206975307U (en) | 2017-07-11 | 2017-07-11 | A kind of big visual field airbome low light night vision observation endoscope objective lenses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830337.4U CN206975307U (en) | 2017-07-11 | 2017-07-11 | A kind of big visual field airbome low light night vision observation endoscope objective lenses |
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| CN206975307U true CN206975307U (en) | 2018-02-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111657823A (en) * | 2020-04-30 | 2020-09-15 | 北京航空航天大学 | Wide-spectrum endoscope imaging adapter |
| CN112269237A (en) * | 2020-11-12 | 2021-01-26 | 中国航空工业集团公司洛阳电光设备研究所 | Large objective lens centering structure for airborne sighting device |
-
2017
- 2017-07-11 CN CN201720830337.4U patent/CN206975307U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111657823A (en) * | 2020-04-30 | 2020-09-15 | 北京航空航天大学 | Wide-spectrum endoscope imaging adapter |
| CN111657823B (en) * | 2020-04-30 | 2021-08-03 | 北京航空航天大学 | Wide-spectrum endoscope imaging adapter |
| CN112269237A (en) * | 2020-11-12 | 2021-01-26 | 中国航空工业集团公司洛阳电光设备研究所 | Large objective lens centering structure for airborne sighting device |
| CN112269237B (en) * | 2020-11-12 | 2022-09-02 | 中国航空工业集团公司洛阳电光设备研究所 | Large objective lens centering structure for airborne sighting device |
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