CN105204313A - Optical zooming system and method based on programmable orthogonal close-contact column lens - Google Patents
Optical zooming system and method based on programmable orthogonal close-contact column lens Download PDFInfo
- Publication number
- CN105204313A CN105204313A CN201510712268.2A CN201510712268A CN105204313A CN 105204313 A CN105204313 A CN 105204313A CN 201510712268 A CN201510712268 A CN 201510712268A CN 105204313 A CN105204313 A CN 105204313A
- Authority
- CN
- China
- Prior art keywords
- post lens
- orthogonal
- contiguity
- programme
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Studio Devices (AREA)
- Lenses (AREA)
Abstract
The invention provides an optical zooming system and method based on a programmable orthogonal close-contact column lens. The system comprises a spatial optical modulator, a computer and an image sensor; the image sensor is arranged on the right side of the spatial optical modulator connected with the computer through a transmission line; under the control of the computer, the programmable orthogonal close-contact column lens is loaded onto the spatial optical modulator for zooming. The zooming system has the advantages that the structure is simplified, the size is reduced, the cost is relatively low, and a certain application prospect is provided.
Description
Technical field
The invention belongs to optical zoom field, especially, the present invention relates to a kind of optical focal distance setting system based on orthogonal contiguity post lens able to programme and Zooming method.
Background technology
Along with development and the growth in the living standard of science and technology, the requirement of people to optical focal distance setting system is more and more higher.Traditional mechanical zoom system is combined by the lens unit that several groups of focal lengths are fixing, the focal length of system is changed by the distance mechanically changed between lens unit, and very strict to the movement requirement of lens unit, the problem such as cause traditional mechanical zoom system complex structure, bulky, cost of manufacture is high and the scope of application is narrow.Because mechanical zoom system is subject to the restriction of many many factors, people want the mode of seeking a kind of active zoom to replace it urgently.
Post lens, as the most frequently used class lens, are widely used in the field such as laser beam flying, laser semiconductor light field collimation, wide-screen projection, holographic optical interconnection device, eye optical instrument in recent years.As shown in Figure 1, the optical system be made up of orthogonal contiguity post lens overcomes optical system that traditional globe lens forms can not realize the shortcoming that anisotropy operates, thus enhances the dirigibility that light path arranges.But the optical system that this orthogonal contiguity post lens are formed is mechanical zoom system, and practicality is still very restricted, thus make to adopt spatial light modulator to carry out digital zoom to obtain and pay close attention to widely.Spatial light modulator is a kind of equipment of electronic programmable, can realize the modulation to light wave amplitude, phase place, frequency etc.By spatial light modulator is joined in optical system, can reduction system volume, mitigation system weight, reduces costs, and is therefore with a wide range of applications.
Summary of the invention
For solving problems of the prior art, the present invention proposes a kind of optical focal distance setting system based on orthogonal contiguity post lens able to programme and Zooming method, in spatial light modulator, loading programmable orthogonal contiguity post lens carry out alternative mechanical zoom lens combination, profit computerizeds control the focal length of the post lens able to programme be loaded in spatial light modulator to realize zoom, make zoom system, pancreatic system have zoom rate fast, be easy to advantages such as realizing, maintenance cost is low.
The technical solution adopted in the present invention:
A kind of optical focal distance setting system based on orthogonal contiguity post lens able to programme as shown in Figure 2, comprises spatial light modulator, computing machine and imageing sensor; Described imageing sensor is arranged on the right side of spatial light modulator; Its spatial light modulator is connected with computing machine by transmission line, controls loading programmable orthogonal contiguity post lens to spatial light modulator carry out zoom by computing machine.
Based on the optical zoom method of orthogonal contiguity post lens able to programme, comprise the following steps:
(1) optical focal distance setting system based on orthogonal contiguity post lens able to programme is built;
(2) incident light is radiated in spatial light modulator;
(3) in spatial light modulator, orthogonal contiguity post lens able to programme are loaded, orthogonal contiguity post lens able to programme are made up of two post lens, and first post lens is vertically placed, and is called vertical posts lens, second post lens is laterally placed, and is called transverse post lens.According to the unidirectional phase-modulation character of post lens, the focal length of setting vertical posts lens is
, the phase-modulation calculating vertical posts lens is
, the focal length of transverse post lens is
, the phase-modulation calculating transverse post lens is
, wherein
the wavelength of incident light,
xwith
yfor Cartesian coordinates.Then the phase-modulation together of orthogonal contiguity post lens able to programme is
, the phase-modulation of orthogonal contiguity post lens able to programme is compiled into phase hologram and is carried in spatial light modulator;
(4) changed the hologram of the able to programme orthogonal contiguity post lens be loaded in spatial light modulator by computing machine, change the focal length of orthogonal contiguity post lens able to programme, thus realize digital zoom functions;
(5) object light after modulation is irradiated on imageing sensor, gathers the image obtained.
Preferably, spatial light modulator is transmission-type type spatial light modulator.
Preferably, imageing sensor is ccd image sensor.
Preferably, the Cartesian coordinates in step (3)
x, yall measure from post lens center able to programme.
Preferably, phase place in step (3)
delivery during calculating
operation.
Preferably, the vertical posts lens in step (3) in orthogonal contiguity post lens able to programme and the focal length of transverse post lens
with
, when
time, the focal length of orthogonal contiguity post lens able to programme
; When
time, orthogonal contiguity post lens able to programme are individually to light travel direction
xwith
ythe phase-modulation in direction, realizes operating the anisotropy of object light.
Accompanying drawing explanation
Accompanying drawing 1 is the traditional optical zoom system, pancreatic system schematic diagram that orthogonal contiguity post lens are formed.
The structural representation of the optical focal distance setting system based on orthogonal contiguity post lens able to programme that accompanying drawing 2 proposes for the present invention.
Accompanying drawing 3 is focal length of the present invention is 50
cmthe phase hologram of able to programme orthogonal contiguity post lens.
Accompanying drawing 4 is focal length of the present invention is 35
cmvertical posts lens and focal length be 50
cmthe phase hologram of able to programme orthogonal contiguity post lens of transverse post lens combination synthesis.
Accompanying drawing 5 is focal length of the present invention is 50
cmvertical posts lens and focal length be 35
cmthe phase hologram of able to programme orthogonal contiguity post lens of transverse post lens combination synthesis.
Shown by reference numeral in above-mentioned accompanying drawing is:
1 spatial light modulator, 2 computing machines, 3 imageing sensors
Should be appreciated that above-mentioned accompanying drawing just schematically, do not draw in proportion.
Embodiment
The following detailed description of the present invention propose a kind of based on the orthogonal optical focal distance setting system of contiguity post lens able to programme and the embodiment of Zooming method, the present invention is conducted further description.What be necessary to herein means out is; following examples are only described further for the present invention; limiting the scope of the invention can not be interpreted as; this art skilled person makes some nonessential improvement and adjustment according to foregoing invention content to the present invention, still belongs to protection scope of the present invention.
The present invention is according to the phase-modulation principle of spatial light modulator, the phase hologram of the vertical posts lens of different focal and the able to programme orthogonal contiguity post lens of transverse post lens combination is produced by computing machine, phase hologram is carried in spatial light modulator, carry out modulating the incident light by spatial light modulator, realize digital zoom functions.Orthogonal contiguity post lens able to programme have the effect of phase-modulation, and its phase-modulation that accompanies is
, wherein,
for the focal length of vertical posts lens,
for the focal length of transverse post lens,
the wavelength of incident light,
xwith
yfor Cartesian coordinates.
Realize zoom function by the phase hologram of the able to programme orthogonal contiguity post lens of the vertical posts lens and transverse post lens combination that load different focal in spatial light modulator, the phase hologram that spatial light modulator shows can be by
calculate, wherein,
xwith
yfor Cartesian coordinates, measure from post lens center able to programme,
represent delivery
operation.Modulo operation is to enable post lens able to programme diffraction efficiency in theory reach
100%, in spatial light modulator, the phase place of each pixel can be
in scope, change, namely achieves digital zoom functions.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 2, a kind of optical focal distance setting system based on orthogonal contiguity post lens able to programme, comprises spatial light modulator, computing machine and imageing sensor; Described imageing sensor is arranged on the right side of spatial light modulator; Its spatial light modulator is connected with computing machine by transmission line, controls loading programmable orthogonal contiguity post lens to spatial light modulator carry out zoom by computing machine.
Claims (4)
1., based on an optical focal distance setting system for orthogonal contiguity post lens able to programme, it is characterized in that, this system comprises spatial light modulator, computing machine and imageing sensor; Described imageing sensor is arranged on the right side of spatial light modulator; Its spatial light modulator is connected with computing machine by transmission line, controls loading programmable orthogonal contiguity post lens to spatial light modulator carry out zoom by computing machine.
2. based on an optical zoom method for orthogonal contiguity post lens able to programme, it is characterized in that, the method comprising the steps of: build the optical focal distance setting system based on orthogonal contiguity post lens able to programme; Incident light is radiated in spatial light modulator; On spatial light modulator, load orthogonal contiguity post lens able to programme, orthogonal contiguity post lens able to programme are made up of two post lens, and first post lens is vertically placed, and is called vertical posts lens, and second post lens is laterally placed, and is called transverse post lens; According to the unidirectional phase-modulation character of post lens, the focal length of setting vertical posts lens is
, the phase-modulation calculating vertical posts lens is
, the focal length of transverse post lens is
, the phase-modulation calculating transverse post lens is
, wherein
the wavelength of incident light,
xwith
yfor Cartesian coordinates, then the phase-modulation together of orthogonal contiguity post lens able to programme is
, the phase-modulation of orthogonal contiguity post lens able to programme is compiled into phase hologram and is carried in spatial light modulator; Change hologram by computing machine, change the focal length of orthogonal contiguity post lens able to programme, thus realize digital zoom functions; Object light after modulation is irradiated on imageing sensor, gathers the image obtained.
3. a kind of optical focal distance setting system based on orthogonal contiguity post lens able to programme according to claim 1 and 2 and Zooming method, it is characterized in that, described spatial light modulator is transmission-type type spatial light modulator, and described imageing sensor is ccd image sensor.
4. a kind of optical zoom method based on orthogonal contiguity post lens able to programme according to claim 2, is characterized in that, Cartesian coordinates
x, yall measure from post lens center able to programme, phase place
delivery during calculating
operation, the vertical posts lens in orthogonal contiguity post lens able to programme and the focal length of transverse post lens
with
meet
time, the focal length of orthogonal contiguity post lens able to programme
; When
time, orthogonal contiguity post lens able to programme individually carry out light
xdirection and
ythe phase-modulation in direction, realizes operating the anisotropy of object light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712268.2A CN105204313B (en) | 2015-08-16 | 2015-10-28 | A kind of optical focal distance setting system and Zooming method based on programmable orthogonal contiguity cylindrical lens |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015104971004 | 2015-08-16 | ||
| CN201510497100 | 2015-08-16 | ||
| CN201510712268.2A CN105204313B (en) | 2015-08-16 | 2015-10-28 | A kind of optical focal distance setting system and Zooming method based on programmable orthogonal contiguity cylindrical lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105204313A true CN105204313A (en) | 2015-12-30 |
| CN105204313B CN105204313B (en) | 2018-07-17 |
Family
ID=54952061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510712268.2A Active CN105204313B (en) | 2015-08-16 | 2015-10-28 | A kind of optical focal distance setting system and Zooming method based on programmable orthogonal contiguity cylindrical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105204313B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62209992A (en) * | 1986-03-11 | 1987-09-16 | Canon Inc | Display device |
| CN102354068A (en) * | 2011-10-24 | 2012-02-15 | 苏州科技学院 | Method for realizing varifocal lens based on liquid crystal space optical modulator |
| CN104698802A (en) * | 2015-03-24 | 2015-06-10 | 四川大学 | Large-size calculation holographic representation method |
| CN104777738A (en) * | 2015-04-17 | 2015-07-15 | 四川大学 | Holographic zoom system for eliminating bad light |
| CN104898364A (en) * | 2011-04-28 | 2015-09-09 | 大日本印刷株式会社 | Projection apparatus and projection control apparatus |
-
2015
- 2015-10-28 CN CN201510712268.2A patent/CN105204313B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62209992A (en) * | 1986-03-11 | 1987-09-16 | Canon Inc | Display device |
| CN104898364A (en) * | 2011-04-28 | 2015-09-09 | 大日本印刷株式会社 | Projection apparatus and projection control apparatus |
| CN102354068A (en) * | 2011-10-24 | 2012-02-15 | 苏州科技学院 | Method for realizing varifocal lens based on liquid crystal space optical modulator |
| CN104698802A (en) * | 2015-03-24 | 2015-06-10 | 四川大学 | Large-size calculation holographic representation method |
| CN104777738A (en) * | 2015-04-17 | 2015-07-15 | 四川大学 | Holographic zoom system for eliminating bad light |
Non-Patent Citations (1)
| Title |
|---|
| 张恒: "柱透镜成像规律的研究", 《河北工业大学硕士学位论文》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105204313B (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ichihashi et al. | Real-time capture and reconstruction system with multiple GPUs for a 3D live scene by a generation from 4K IP images to 8K holograms | |
| CN101881936B (en) | Holographical wave guide display and generation method of holographical image thereof | |
| CN106094218B (en) | A kind of generation device of hollow beam | |
| CN106363908A (en) | Optical imaging system of photocuring 3D printer | |
| CN105892257B (en) | The method and device of sinusoidal structured optical recording hologram | |
| Wei et al. | Compact freeform illumination optics design by deblurring the response of extended sources | |
| Zhang et al. | Depth range enhancement of binary defocusing technique based on multi-frequency phase merging | |
| CN104698802A (en) | Large-size calculation holographic representation method | |
| Wang et al. | Curved hologram generation method for speckle noise suppression based on the stochastic gradient descent algorithm | |
| CN208780919U (en) | A kind of efficient Brillouin's amplifying device of higher-dimension orbital angular momentum light beam | |
| Chang et al. | Three-dimensional computer holography enabled from a single 2D image | |
| CN107247339A (en) | The double imaging methods and system of a kind of radial polarisation characteristic based on vectorial field | |
| CN105204313A (en) | Optical zooming system and method based on programmable orthogonal close-contact column lens | |
| Li et al. | Portable autostereoscopic display based on multi-directional backlight | |
| CN104777738A (en) | Holographic zoom system for eliminating bad light | |
| CN103149698B (en) | Active optical zoom system based on silica-based liquid crystal and zoom method thereof | |
| CN108776427A (en) | A method of it is improved using spatial light modulator and calculates reconstruction of hologram image quality | |
| Zhou et al. | Depth of field expansion method for integral imaging based on diffractive optical element and CNN | |
| Wang et al. | Phase-only hologram generated by a convolutional neural network trained using low-frequency mixed noise | |
| Yan et al. | Implementation of the real–virtual 3D scene-fused full-parallax holographic stereogram | |
| Li et al. | Wavefront shaping by a small-aperture deformable mirror in the front stage for high-power laser systems | |
| CN114660821B (en) | Method for generating first-order Airy derivative light beam with limited energy | |
| Wu et al. | Optical encryption based on computer generated holograms in photopolymer | |
| CN101907781B (en) | Method for manufacturing optical flat plate with beam converging function | |
| Hua et al. | Time-multiplexed vector light field display with intertwined views via metagrating matrix |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |