CN109656092A - A kind of ultraviolet relaying framing optical system and ultraviolet framing camera - Google Patents
A kind of ultraviolet relaying framing optical system and ultraviolet framing camera Download PDFInfo
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- CN109656092A CN109656092A CN201910012410.0A CN201910012410A CN109656092A CN 109656092 A CN109656092 A CN 109656092A CN 201910012410 A CN201910012410 A CN 201910012410A CN 109656092 A CN109656092 A CN 109656092A
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- ultraviolet
- lens
- optical system
- framing
- relaying
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- 230000003287 optical effect Effects 0.000 title claims abstract description 119
- 238000009432 framing Methods 0.000 title claims abstract description 83
- 238000003384 imaging method Methods 0.000 claims abstract description 34
- 210000001747 pupil Anatomy 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 9
- 238000012546 transfer Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000005350 fused silica glass Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B39/00—High-speed photography
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
- Microscoopes, Condenser (AREA)
Abstract
This application discloses a kind of ultraviolet relaying framing optical system and ultraviolet framing cameras.Ultraviolet relaying framing optical system, including the first lens set, optical filter, the second lens set, pyramid reflecting prism, reflecting mirror, imaging surface；First lens set, optical filter, the second lens set, pyramid reflecting prism are set gradually along first direction；Reflecting mirror is located at the two sides of pyramid reflecting prism in a second direction；Imaging surface is opposite with reflecting mirror；First lens set successively includes the first negative lens, the first positive lens, the second positive lens along first direction；Second lens set successively includes third positive lens, the second negative lens, the 4th positive lens, the 5th positive lens, third negative lens, the 4th negative lens, the 6th positive lens along first direction.This system ensure that the image quality and sensitivity of 190~350nm ultraviolet band.
Description
Technical field
This application involves a kind of ultraviolet relaying framing optical system and ultraviolet framing cameras, belong to frame imaging technology neck
Domain.
Background technique
In the field that some pairs of imaging shutter times of integration are more demanding, such as ultrafast imaging, ballistic research, particle picture speed
Degree measurement etc., generallys use the ultrahigh speed camera system of image intensifying type, as shown in Figure 1.Electric signal is converted by optical signal, is passed through
The shutter imaging control of nsec scale may be implemented at the image intensifier principle of optical signal for electrically amplified reconvert.But by
The fluorescence soldier for being limited to phosphor screen materials is gone out the time, and current image intensifying type ultrahigh speed camera system can only be accomplished 400 more than nanosecond
Frame period shooting.When shooting avoidable single channel camera frame period using more cameras progress timesharing using relaying framing mode
Between limited disadvantage, it can be achieved that the unlimited short frame interval time be continuously shot.Visible light wave range at present, framing camera technology is
Comparative maturity, and in 350nm ultraviolet band below, the ultrahigh speed camera scheme of framing type is seldom, and in the prior art
Framing type camera imaging quality and sensitivity it is not high.
Summary of the invention
According to the one aspect of the application, a kind of ultraviolet relaying framing optical system is provided, this system ensure that 190~
The image quality and sensitivity of 350nm ultraviolet band.
A kind of ultraviolet relaying framing optical system, including the first lens set, optical filter, the second lens set, pyramid reflect rib
Mirror, reflecting mirror, imaging surface；
First lens set, optical filter, the second lens set, pyramid reflecting prism are set gradually along first direction；
The reflecting mirror is located at the two sides of the pyramid reflecting prism in a second direction；
The imaging surface is opposite with the reflecting mirror；
First lens set successively includes the first negative lens, the first positive lens, the second positive lens along first direction；
Second lens set successively includes third positive lens, the second negative lens, the 4th positive lens, the 5th along first direction
Positive lens, third negative lens, the 4th negative lens, the 6th positive lens；
Wherein, the first direction is object space to the direction of image space, and the second direction is mutually to hang down with the first direction
Straight direction.
Optionally, the relative aperture of the ultraviolet relaying framing optical system is F1.4~4.0.
Optionally, the focal length of first lens set and second lens set be 0.2≤| f1/f2 |≤2.5；
Wherein, f1 is the focal length of the first lens set, and f2 is the focal length of the second lens set.
Optionally, the exit pupil position of the ultraviolet relaying framing optical system is located at the rear of the 6th positive lens.
Optionally, the cone point of the pyramid reflecting prism or seamed edge are located at going out for the ultraviolet relaying framing optical system
Before and after pupil position in the range of 5mm.
Optionally, the amplification factor of the ultraviolet relaying framing optical system is 0.8~4.
Optionally, using the optical material for being greater than 90% to 190~400nm ultraviolet band transmitance.
Optionally, the optical material is selected from any one of fused silica, fluoride materials；
Wherein, the fluoride materials include any one of calcirm-fluoride, magnesium fluoride.
According to the another aspect of the application, additionally provide a kind of ultraviolet framing camera, including objective lens optical system and on
State described in any item ultraviolet relaying framing optical systems.
Optionally, the imaging surface of the objective lens optical system is first negative in the ultraviolet relaying framing optical system
The rear of mirror incidence surface.
The beneficial effect that the application can generate includes:
1) ultraviolet relaying framing optical system provided herein, this system ensure that 190~350nm ultraviolet band
Image quality and sensitivity.
2) ultraviolet relaying framing optical system described herein be include field lens optics microscope group (the first lens set) and altogether
Conjugate optics microscope group (the second lens set) is with being combined into, and wherein field lens optics microscope group major function is to make ultraviolet relaying framing optical system
System entrance pupil position matches with objective lens optical system exit pupil position, guarantees each point in the efficiency of transmission and areas imaging of ultraviolet image
Imaging illuminance uniformity.
3) at last a piece of diaphotoscope piece rear, spatial position is framing for ultraviolet relaying framing optical system exit pupil position
Multi-surface reflection prism front edge used or inner cone point position guarantee that the imaging illumination of each point in picture frame areas imaging is equal
Even property.
Detailed description of the invention
Fig. 1 is the schematic diagram of optical system of common single channel image intensifying type camera in the prior art；
Fig. 2 is the structural schematic diagram for the ultraviolet relaying framing optical system that embodiment 1 provides；
Fig. 3 is that the ultraviolet relaying framing optical system that embodiment 1 provides matches light path schematic diagram with objective lens optical system；
Fig. 4 is the optical transfer function diagram for the ultraviolet relaying framing optical system that embodiment 1 provides；
Fig. 5 is the curvature of field and distortion curve for the ultraviolet relaying framing optical system that embodiment 1 provides；
Fig. 6 is the structural schematic diagram of the optical system in the ultraviolet framing camera that embodiment 2 provides.
Component and reference signs list:
Diaphragm 100；First lens set 200；
First negative lens 201；First positive lens 202；
Second positive lens 203；Optical filter 300；
Second lens set 400；Third positive lens 401；
Second negative lens 402；4th positive lens 403；
5th positive lens 404；Third negative lens 405；
4th negative lens 406；6th positive lens 407；
Pyramid reflecting prism 500；Reflecting mirror 600；
Imaging surface 700.
Specific embodiment
The application is described in detail below with reference to embodiment, but the application is not limited to these embodiments.
This application provides a kind of ultraviolet relaying framing optical systems, including the first lens set 200, optical filter 300, second
Lens set 400, pyramid reflecting prism 500, reflecting mirror 600, imaging surface 700；First lens set 200, optical filter 300, the second mirror
Piece group 400, pyramid reflecting prism 500 are set gradually along first direction；Reflecting mirror 600 is located at pyramid reflection in a second direction
The two sides of prism 500；Imaging surface 700 and reflecting mirror 600 are opposite；First lens set 200 successively includes first negative along first direction
Lens 201, the first positive lens 202, the second positive lens 203；Second lens set 400 successively includes third positive lens along first direction
401, the second negative lens 402, the 4th positive lens 403, the 5th positive lens 404, third negative lens 405, the 4th negative lens 406,
Six positive lens 407；Wherein, first direction is object space to the direction of image space；Second direction is the direction perpendicular with first direction.
In this application, object space direction is set to front, imaging surface direction is set to rear.Ultraviolet relaying of the present invention
Framing optical system is divided into the first lens set 200 and second lens set 400 former and later two lens sets on optical texture, wherein
Preceding group of the first lens set 200 is made of three pieces eyeglass, is mainly used for changing the chief ray angle in object lens direction, be realized and object lens system
The emergent pupil of system matches；After organize the second lens set 400 and be made of 7 eyeglasses, be mainly used for completing the aberration school of relay optical system
Just, it realizes the transmitting of object lens image, and is imaged in sensor imaging surface.
Ultraviolet relaying framing optical system described herein uses 10 groups 10 optical textures, from object space side to image space
Direction sequence arrangement is successively by the first negative lens 201, the first positive lens 202, the second positive lens 203, optical filter 300, third
Positive lens 401, the second negative lens 402, the 4th positive lens 403, the 5th positive lens 404, third negative lens 405, the 4th negative lens
406, the 6th positive lens 407, pyramid reflecting prism 500, reflecting mirror 600, imaging surface 700 form.
Optionally, the relative aperture of ultraviolet relaying framing optical system is F1.4~4.0.
Optionally, the focal length of the first lens set 200 and the second lens set 400 be 0.2≤| f1/f2 |≤2.5；Wherein, f1
For the focal length of the first lens set, f2 is the focal length of the second lens set.
Specifically, the focal distance ratio of two groups of optical system first lens sets 200 and the second lens set 400 meets inequality: 0.2
≤|f1/f2|≤2.5。
Optionally, the exit pupil position of ultraviolet relaying framing optical system is located at the rear of the 6th positive lens 407.
Specifically, the ultraviolet relaying framing optical system exit pupil position in the application is located at the last one spherical mirror (i.e.
Six positive lens 407) rear.
Optionally, the cone point of pyramid reflecting prism 500 or seamed edge are located at going out for the ultraviolet relaying framing optical system
Before and after pupil position in the range of 5mm.
In this application, when the cone point or seamed edge of pyramid reflecting prism 500 are located at the ultraviolet relaying framing optical system
Before and after the exit pupil position of system in the range of 5mm, that is, think that the cone point of pyramid reflecting prism 500 or seamed edge are weighed with exit pupil position
It closes.
In a specific example, ultraviolet relaying framing optical system exit pupil position is located at the last one spherical mirror (i.e.
6th positive lens 407) rear, exit pupil position is overlapped with light splitting prism of corner cube cone point position or seamed edge position, i.e., certifiable
The imaging illuminance uniformity of each point in picture frame areas imaging.
Optionally, the amplification factor of ultraviolet relaying framing optical system is 0.8~4.
Optionally, using the optical material for being greater than 90% to 190~400nm ultraviolet band transmitance.
Specifically, ultraviolet relaying framing optical system uses the optical material system of 190~400nm ultraviolet band high transmittance
At.
Optionally, the optical material is selected from any one of fused silica, fluoride materials；
Wherein, the fluoride materials include any one of calcirm-fluoride, magnesium fluoride
Present invention also provides a kind of ultraviolet framing cameras, including objective lens optical system and purple described in any of the above embodiments
Outer relaying framing optical system.
Specifically, objective lens optical system is located at the front of ultraviolet relaying framing optical system.
Objective lens optical system includes diaphragm 100 shown in Fig. 2.
Optionally, the imaging surface of the objective lens optical system is first negative in the ultraviolet relaying framing optical system
The rear of 201 incidence surface of mirror.
Specifically, when ultraviolet relaying framing optical system provided by the invention is matched with front objective lens optical system, object lens
Rear of the optical system imaging face position in the left side optics end face of the first negative lens of relay optical system 201.The structure can be simultaneous
Hold all exit pupil positions in front of the object lens imaging surface within the scope of 50~200mm, relative aperture value be greater than the object lens optical system of F2.0
System, and realize optical imagery transmission efficiency and energy transfer efficiency matched well.
Ultraviolet relaying framing optical system provided herein is 0.8 for the image magnification of objective lens optical system
~4, it is preferable that amplification factor 2.0 is greater than relative aperture value the objective lens optical system of F2.0, relative aperture amplification ratio
It is 0.5.
Relaying framing optical system provided herein is in the transmitting between object lens and imaging surface, for object lens image
And framing.
The ultraviolet relay optical system that herein described technical solution uses a few ultraviolet optical material to manufacture and design,
The relative aperture of F1.4~4.0,0.8~4 times of relaying amplification ratio can be achieved.
Ultraviolet relaying framing optical system described herein be include field lens optics microscope group (the first lens set) and conjugation
Optics microscope group (the second lens set) is with being combined into, and wherein field lens optics microscope group major function is to make ultraviolet relaying framing optical system
Entrance pupil position matches with objective lens optical system exit pupil position, guarantees each point in the efficiency of transmission and areas imaging of ultraviolet image
Illuminance uniformity is imaged.
It in this application, is front by objective lens optical system direction, ultraviolet relaying framing optical system exit pupil position is most
A piece of diaphotoscope piece rear afterwards, spatial position are multi-surface reflection prism front edge or inner cone point position used in framing, are protected
Demonstrate,prove the imaging illuminance uniformity of each point in picture frame areas imaging.
Embodiment 1
Fig. 2 is the structural schematic diagram of ultraviolet relaying framing optical system provided by the present embodiment, below with reference to Fig. 2 to this
Embodiment is illustrated.
As shown in Fig. 2, ultraviolet relaying framing optical system provided in this embodiment includes diaphragm 100, the first negative lens
201, the first positive lens 202, the second positive lens 203, optical filter 300, third positive lens 401, the second negative lens the 402, the 4th be just
Lens 403, the 5th positive lens 404, third negative lens 405, the 4th negative lens 406, the 6th positive lens 407, pyramid reflecting prism
500, reflecting mirror 600, imaging surface 700.Normalized parameter such as 1 institute of table of ultraviolet relaying framing optical system provided in this embodiment
Show:
Table 1
Fig. 3 matches light path schematic diagram with objective lens optical system for ultraviolet relaying framing optical system provided in this embodiment.
Object lens imaging surface is located at the rear of the incidence surface of the first negative lens 201 in relaying microscope group as seen from Figure 3.
Fig. 4 is the optical transfer function diagram of ultraviolet relaying framing optical system provided in this embodiment, can be seen by Fig. 4
Out-trunk optical system 50 line of spatial frequency it is right/millimeter under central vision optical transfer function (OTF) reach 0.4 or more, side
Edge visual field optical transfer function (OTF) reaches 0.3 or more.
Fig. 5 is the curvature of field and distortion curve of ultraviolet relaying framing optical system provided in this embodiment, can be seen by Fig. 5
Within positive and negative 0.2 millimeter, full filed distorts within positive and negative 0.35% the out-trunk optical system curvature of field.
Remarks: described Fig. 3 to Fig. 5 is that the ZEMAX optical design software of U.S. Radiant Zemax company calculates gained
Embodiment 2
Fig. 6 is the structural schematic diagram of the optical system in ultraviolet framing camera provided in this embodiment.Below with reference to Fig. 6 pairs
The present embodiment is illustrated.
As shown in fig. 6, the optical system in ultraviolet framing camera provided in this embodiment includes objective lens optical system and upper
State the ultraviolet relaying framing optical system.Objective lens optical system is in the front of ultraviolet relaying framing optical system.
The technical solution of the present embodiment is based on framing camera principle, using reflective framing mode, it is ensured that 190~
The image quality and sensitivity of 350nm ultraviolet band.
The above is only several embodiments of the application, not does any type of limitation to the application, although this Shen
Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off
In the range of technical scheme, a little variation or modification are made using the technology contents of the disclosure above and is equal to
Case study on implementation is imitated, is belonged in technical proposal scope.
Claims (10)
1. a kind of ultraviolet relaying framing optical system, which is characterized in that including the first lens set, optical filter, the second lens set, angle
Bore reflecting prism, reflecting mirror, imaging surface；
First lens set, optical filter, the second lens set, pyramid reflecting prism are set gradually along first direction；
The reflecting mirror is located at the two sides of the pyramid reflecting prism in a second direction；
The imaging surface is opposite with the reflecting mirror；
First lens set successively includes the first negative lens, the first positive lens, the second positive lens along first direction；
Second lens set successively includes that third positive lens, the second negative lens, the 4th positive lens, the 5th are just saturating along first direction
Mirror, third negative lens, the 4th negative lens, the 6th positive lens；
Wherein, the first direction is object space to the direction of image space, and the second direction is perpendicular with the first direction
Direction.
2. ultraviolet relaying framing optical system according to claim 1, which is characterized in that the ultraviolet relaying framing optics
The relative aperture of system is F1.4~4.0.
3. ultraviolet relaying framing optical system according to claim 1, which is characterized in that first lens set and described
The focal length of second lens set be 0.2≤| f1/f2 |≤2.5；
Wherein, f1 is the focal length of the first lens set, and f2 is the focal length of the second lens set.
4. ultraviolet relaying framing optical system according to claim 1, which is characterized in that the ultraviolet relaying framing optics
The exit pupil position of system is located at the rear of the 6th positive lens.
5. ultraviolet relaying framing optical system according to claim 4, which is characterized in that the cone of the pyramid reflecting prism
Point or seamed edge are located in the range of the exit pupil position front and back 5mm of the ultraviolet relaying framing optical system.
6. ultraviolet relaying framing optical system according to claim 1, which is characterized in that the ultraviolet relaying framing optics
The amplification factor of system is 0.8~4.
7. ultraviolet relaying framing optical system according to claim 1, which is characterized in that using ultraviolet to 190~400nm
Wave band transmitance is greater than 90% optical material.
8. ultraviolet relaying framing optical system according to claim 7, which is characterized in that the optical material, which is selected from, melts stone
Any one of English, fluoride materials；
Wherein, the fluoride materials include any one of calcirm-fluoride, magnesium fluoride.
9. a kind of ultraviolet framing camera, which is characterized in that including described in objective lens optical system and any one of claim 1~8
Ultraviolet relaying framing optical system.
10. ultraviolet framing camera according to claim 9, which is characterized in that the imaging surface of the objective lens optical system exists
The rear of the first negative lens incidence surface in the ultraviolet relaying framing optical system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012410.0A CN109656092B (en) | 2019-01-07 | 2019-01-07 | Ultraviolet relay framing optical system and ultraviolet framing camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012410.0A CN109656092B (en) | 2019-01-07 | 2019-01-07 | Ultraviolet relay framing optical system and ultraviolet framing camera |
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| CN109656092B CN109656092B (en) | 2024-04-12 |
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