CN104330896B - Optical system for realizing high-flux virtual slit by using total internal reflection prism array - Google Patents
Optical system for realizing high-flux virtual slit by using total internal reflection prism array Download PDFInfo
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- CN104330896B CN104330896B CN201410613218.4A CN201410613218A CN104330896B CN 104330896 B CN104330896 B CN 104330896B CN 201410613218 A CN201410613218 A CN 201410613218A CN 104330896 B CN104330896 B CN 104330896B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 26
- 239000013307 optical fiber Substances 0.000 claims abstract description 24
- 241000700608 Sagitta Species 0.000 claims description 73
- 230000004907 flux Effects 0.000 claims description 31
- 239000000835 fiber Substances 0.000 claims description 9
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- 238000005286 illumination Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 241000219739 Lens Species 0.000 description 62
- 210000000695 crystalline len Anatomy 0.000 description 62
- 238000005516 engineering process Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0911—Anamorphotic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/04—Slit arrangements slit adjustment
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0961—Lens arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
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Abstract
The invention discloses an optical system for realizing a high-flux virtual slit by utilizing a total internal reflection prism array, which comprises: the lens comprises a front short-focus cylindrical lens in the meridian direction, a front long-focus cylindrical lens in the sagittal direction, a total internal reflection prism array, a rear long-focus cylindrical lens in the sagittal direction and a rear short-focus cylindrical lens in the meridian direction. The signal light input by the end face of the round optical fiber is collimated by the front short-focus cylindrical lens in the meridian direction and the front long-focus cylindrical lens in the sagittal direction respectively to form an elliptical light spot, the long axis of the ellipse is located in the sagittal direction, and the short axis is located in the meridian direction. After the elliptic light spots are divided by the total internal reflection prism array in the sagittal direction, the divided elliptic light spots are rotationally rearranged, and then the required high-flux virtual slit can be obtained after the elliptic light spots pass through the rear long-focus cylindrical lens in the sagittal direction and the rear short-focus cylindrical lens in the meridional direction. The invention has simple light path and high light energy utilization rate.
Description
Technical field
The invention belongs to spectroscopic instrumentation designs field, being related to one kind, to realize high flux using total internal reflection prism array virtual
The optical system of slit.
Background technology
Spectrogrph is widely used in the fields such as physicss, chemistry, biology, medical science, astronomy, geology, materialogy, closely
Nian Lai, the development with photoelectric technology, laser technology, computer technology, advanced machining technology etc. and introducing, spectrogrph develops
Become high-performance, automatization, the optic analytical instrument of integration.
In spectral instrument, there is very unremarkable, a but critically important ingredient slit.Slit is in spectrogrph
In Main Function be as imaging system " thing ", its width will directly influence on spectrometer detectors " as " width
Degree, and " as " width will determine spectrogrph spectral resolution.Therefore, slit width is less, and the resolution of spectrogrph will be got over
High.However, on the other hand, the width of slit is less, and the luminous flux of system also can be less, if simply by reducing slit width
To obtain higher spectral resolution, it will make the time of integration during spectrographic detection long, or even class cannot be detected at all
Like small-signals such as Raman light, fluorescence.
In conventional grating spectrometer, the main cause leading to luminous flux low is that slit is simply simple to the end face of input optical fibre
Block, the optical signal in this region that makes to be blocked completely loses.In order to improve light while obtaining high spectral resolution
Flux, research worker has made various improvement to the slit of grating spectrograph.A kind of modal method is to importing flashlight
Input optical fibre improve, by traditional single big doped core optical fiber be improved to one end rounded distribution the other end be linearly distributed
Many little fibre cores fibre bundle (Fiber bundles), wherein, one end of linear distribution can be directly used as spectrogrph
" slit ".Although this method can improve certain luminous flux, in fibre bundle, still can in the space between optical fiber and optical fiber
Bring larger energy loss, and the coupling efficiency of little doped core optical fiber is relatively low, therefore, this method is to spectrogrph luminous flux
Raising limited.In addition two methods are as cutting technique (Image slicers) and notch technology (Coded
Apertures) although certain luminous flux also can be improved, both approaches all can increase the complexity of system, to system
Working environment it is also proposed very high requirement.
Recently, U.S. Tornado Spectral Systems company proposes a kind of high flux virtual slit (High-
Throughput Virtual-Slit) technology, it is first that this technology passes through a series of optics such as globe lenss, post lens and reflecting mirror
Part, the circular light spot of spectrometer input fibers end face is shaped as the strip light spots being narrowed along dispersion direction, and bar shaped
Hot spot all can keep the original numerical aperture of optical fiber constant on meridian and sagitta of arc direction.Due to hot spot during narrowing only
The very little energy loss existing because of optical element reflection or absorbing and cause, the strip light spots of therefore gained are referred to as high pass
Amount virtual slit.Although high flux virtual slit obtains practical application due to plurality of advantages, existing high flux virtual slit skill
Optical system in art will expand, colimated light system is separated with beam shaping system, lead to light path complicated, optical element used is relatively
Many, and the polylith reflecting mirror for light beam segmentation restructuring is configured separate, it is larger that this will lead to system general assembly to have when debugging
Difficulty, but also be likely to decrease the stability of system.
Content of the invention
The technical problem to be solved in the present invention is：Complicated for existing high flux virtual slit technology light path, reflecting mirror fills
The problems such as adjust difficulty big, proposes a kind of optical system realizing high flux virtual slit using total internal reflection prism array.This light
System only comprises four groups of post lens and a total internal reflection prism array, have that structure is simple, debug easily, system stability etc.
Advantage.
The technical solution adopted for the present invention to solve the technical problems is：A kind of high using the realization of total internal reflection prism array
The optical system of flux virtual slit is it is characterised in that include：
The preposition short focus post lens of-meridian direction, the object space focal plane of the preposition short focus post lens of described meridian direction is located at
The end face of input optical fibre；
The preposition focal length post lens in-sagitta of arc direction, the preposition focal length post lens in described sagitta of arc direction are located at meridian direction
After preposition short focus post lens, and its object space focal plane also is located at the end face of input optical fibre；
- total internal reflection prism array, described total internal reflection prism array be located at sagitta of arc direction preposition focal length post lens it
Afterwards, and its vertical input face is vertical with the optical axis of the preposition focal length post lens in sagitta of arc direction；
The rearmounted focal length post lens in-sagitta of arc direction, the rearmounted focal length post lens in described sagitta of arc direction are located at total internal reflection rib
After the vertical output face of lens array, and its optical axis is vertical with the vertical output face of total internal reflection prism array；
The rearmounted short focus post lens of-meridian direction, the rearmounted short focus post lens of described meridian direction are located at sagitta of arc direction
After rearmounted focal length post lens, and its image space focal plane is overlapped with the image space focal plane of the rearmounted focal length post lens in sagitta of arc direction.
Further, the preposition short focus post lens of described meridian direction and the preposition focal length post lens in sagitta of arc direction are used respectively
Collimate in meridian direction and sagitta of arc direction in the flashlight that round fiber end face is inputted, obtain a major axis after collimation and exist
Sagitta of arc direction, short axle meridian direction ellipse light spot.
Further, described total internal reflection prism array is used for ellipse light spot being split along sagitta of arc direction, then
Ellipse light spot after segmentation is carried out rotation reset.
Further, the rearmounted focal length post lens in described sagitta of arc direction and the rearmounted short focus post lens of meridian direction are used respectively
Ellipse light spot after to segmentation is focused and focal plane coincidence in sagitta of arc direction and meridian direction, finally can obtain on focal plane
Required high flux virtual slit.
Further, the ratio of described preposition sagitta of arc direction focal length post lens and the focal length of preposition meridian direction short focus post lens
And in total internal reflection prism array, the number N of prism each depends on and narrows multiplying power to fiber end face circular light spot, and it is equal to
This narrows multiplying power.
Further, the ratio of described rearmounted sagitta of arc direction focal length post lens and the focal length of rearmounted meridian direction short focus post lens
The ratio of preposition sagitta of arc direction focal length post lens and the focal length of preposition meridian direction short focus post lens should be equal to, to ensure acquisition
The number all with round fiber end face input signal light for the numerical aperture on meridian direction and sagitta of arc direction for the high flux virtual slit
Value aperture is identical.
Further, in described total internal reflection prism array, the work surface of single prism includes：Vertical input face, first complete
Reflecting surface, the second fully reflecting surface and vertical output face；Wherein, effective working area of vertical input face is that the first fully reflecting surface exists
The region of projection on vertical input face, this view field is square, and the square length of side should be incident elliptical beam major axis side
To the 1/N of width, N is the number of prism in prism array, and the first fully reflecting surface is all become with prism bases with the second fully reflecting surface
45° angle, but the first fully reflecting surface is parallel with the vertical line of incident light axis, and the second fully reflecting surface is parallel with incident light axis, so that entering
Penetrate light and 90 ° of deflections occur after this two reflectings surface, the refractive index of prism should be able to make flashlight occur entirely when 45° angle is incident
Reflection.
Further, described total internal reflection prism array can be by making the bottom surface gluing of separate prism on the glass substrate
Form, each prism is no spaced successively along sagitta of arc direction, arrange at regular intervals successively along incident light axis direction, interval is big
The little width equal to incident ellipse light spot short-axis direction.
Further, the elliptical beam vertical incidence after collimation in described total internal reflection prism array each prism vertical
Input face, enters prism tailing edge sagitta of arc direction and is divided into N section light beam, and N is the number of prism in prism array, and each section of light beam divides
After other the first fully reflecting surface by each prism and the reflection of the second fully reflecting surface, finally from the outgoing of vertical output face, realize elliptical light
The rotation of bundle is reset.
The present invention compared with prior art has advantages below：
1st, compared with the normal slit in existing spectrogrph, high flux virtual slit of the present invention is ensureing same light
Capacity usage ratio can be greatly promoted while spectral resolution, improve the detectivity of instrument；
2nd, compared with the method realizing light path rearrangement in existing high flux virtual slit technology using multi-disc reflecting mirror, this
Total internal reflection prism array in bright, using the principle of total reflection, cleverly achieves light path and resets the integrated of device, reduce
The difficulty that system is debug, makes system stability higher；
3rd, compared with the optical system of existing high flux virtual slit technology, the optical system of the present invention will collimate, expand
, together with beam shaping system globe area, light path is simpler for system, and required optical element is less, energy loss less it is easier to
Miniaturization, miniaturization and integrated；
4th, high flux virtual slit of the present invention can replace existing spectrogrph, monochromator and light splitting as standalone module
Normal slit in the spectrometric instruments such as photometer, has the advantages that stronger universality and compatibility.
Brief description
Fig. 1 is a kind of light path realizing high flux virtual slit using total internal reflection prism array in the embodiment of the present invention 1
Schematic diagram；
In figure：1 is input optical fibre；2 is the preposition short focus post lens of meridian direction；3 is the preposition focal length post in sagitta of arc direction
Lens；4 is total internal reflection prism array；The rearmounted focal length post lens in 5 sagitta of arc directions are；6 is the rearmounted short focus post of meridian direction
Lens；7 is the oval collimated light beam after collimation；8 is the collimated light beam after resetting through prism array；9 is virtual for finally give
Slit.
Fig. 2 is the three dimensional structure diagram of single prism in total internal reflection prism array in the embodiment of the present invention 1；
In figure：4-1 is the vertical incidence face of prism；4-2 is the first fully reflecting surface of prism；4-3 is the second complete of prism
Reflecting surface；4-4 is the vertical exit face of prism；4-5 is the bottom surface of prism.
Fig. 3 be in the embodiment of the present invention 1 three dimensional structure diagram of total internal reflection prism array and light beam pass through entirely interior anti-
Penetrate the index path of prism array.
Fig. 4 is a kind of light path realizing high flux virtual slit using total internal reflection prism array in the embodiment of the present invention 2
Schematic diagram；
In figure：1 is input optical fibre；2 is the preposition short focus post lens of meridian direction；3 is the preposition focal length post in sagitta of arc direction
Lens；4 is total internal reflection prism array；The rearmounted focal length post lens in 5 sagitta of arc directions are；6 is the rearmounted short focus post of meridian direction
Lens；7 is the oval collimated light beam after collimation；8 is the collimated light beam after resetting through prism array；9 is virtual for finally give
Slit.
Fig. 5 be in the embodiment of the present invention 2 three dimensional structure diagram of total internal reflection prism array and light beam pass through entirely interior anti-
Penetrate the index path of prism array.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is discussed in detail the present invention.But below example is only limitted to explain this
Bright, protection scope of the present invention should include the full content of claim, and passes through the technology people to field for the following examples
Member can realize the full content of the claims in the present invention.
Embodiment 1
Embodiments of the invention 1, are by a diameter of 200 μm, and numerical aperture is that 0.22 optical fiber input light is shaped as width
For 50 μm, length is the optical system of 800 μm of virtual slit.As shown in figure 1, utilizing total internal reflection described in the embodiment of the present invention 1
The optical system that prism array realizes high flux virtual slit includes：Input optical fibre 1, the preposition short focus post lens 2 of meridian direction,
The preposition focal length post lens 3 in sagitta of arc direction, total internal reflection prism array 4, the rearmounted focal length post lens 5 in sagitta of arc direction and meridian
The rearmounted short focus post lens 6 in direction.Wherein, the bore of the preposition short focus post lens 2 of meridian direction is 6mm × 6mm, and focal length is
10mm, the bore of the preposition focal length post lens 3 in sagitta of arc direction is 25.4mm × 10mm, and focal length is 40mm, sagitta of arc direction rearmounted
The bore of focal length post lens 5 is 25.4mm × 10mm, and focal length is 40mm, and the bore of the rearmounted short focus post lens 6 of meridian direction is
6mm × 6mm, focal length is 10mm.In total internal reflection prism array 4, the number of prism is 4 pieces, and the three dimensional structure of single prism is illustrated
Scheme as shown in Fig. 2 the square length of side that the first fully reflecting surface 4-2 of prism projects on the 4-1 of vertical incidence face is 4.4mm, rib
The size of mirror bottom surface 4-5 is：15mm×4.4mm.Fig. 3 is the three dimensional structure of total internal reflection prism array in the embodiment of the present invention 1
The schematic diagram and light beam index path by total internal reflection prism array.Wherein each prism is no spaced successively along sagitta of arc direction,
It is spaced apart 4.4mm along what incident light axis direction was arranged in order.
Before the input end face of circular input optical fibre 1 being placed in preposition short focus post lens 2 and the sagitta of arc direction of meridian direction
Put on the common focal plane of focal length post lens 3, optical fiber input signal light is via the preposition short focus post lens 2 of meridian direction and sagitta of arc side
To preposition focal length post lens 3 collimate respectively in the two directions after obtain major axis in sagitta of arc direction, short axle in meridian side
To oval collimated light beam, the size in oval collimated light beam sagitta of arc direction is 17.6mm, and the size of meridian direction is 4.4mm, that is,
The size in sagitta of arc direction is 4 times of meridian direction size, and the beam divergence angle in sagitta of arc direction is meridian direction beam divergence angle
1/4；Oval collimated light beam 7 vertical incidence after collimation to each prism in total internal reflection prism array 4 vertical incidence face 4-
1, enter prism tailing edge sagitta of arc direction and be divided into 4 sections of light beams, each section of light beam is respectively via the first fully reflecting surface 4-2 of each prism
After the second fully reflecting surface 4-3 reflection, finally from the 4-4 outgoing of vertical exit face, the rotation realizing elliptical beam is reset.After rearrangement
Collimated light beam 8 be still respectively 17.6mm and 4.4mm, but the light beam along sagitta of arc direction along the size of sagitta of arc direction and meridian direction
The angle of divergence is changed into 4 times of meridian direction beam divergence angle.Collimated light beam 8 after this rearrangement rearmounted focal length post through sagitta of arc direction again
After the rearmounted short focus post lens 6 of lens 5 and meridian direction focus in the two directions respectively, you can obtain width and be 50 μm, long
Spend the virtual slit 9 for 800 μm, and this virtual slit 9 numerical aperture in the two directions all remains 0.22.
Embodiment 2
Embodiments of the invention 2, are by a diameter of 100 μm, and numerical aperture is that 0.22 optical fiber input light is shaped as width
For 50 μm, length is the optical system of 200 μm of virtual slit.As shown in figure 4, utilizing total internal reflection described in the embodiment of the present invention 1
The optical system that prism array realizes high flux virtual slit includes：Circular input optical fibre 1, the preposition short focus post of meridian direction is saturating
Mirror 2, the preposition focal length post lens 3 in sagitta of arc direction, total internal reflection prism array 4, the rearmounted focal length post lens 5 in sagitta of arc direction and
The rearmounted short focus post lens 6 of meridian direction.Wherein, the bore of the preposition short focus post lens 2 of meridian direction is 10mm × 8mm, burnt
Away from for 15mm, the bore of the preposition focal length post lens 3 in sagitta of arc direction is 20mm × 10mm, and focal length is 30mm, behind sagitta of arc direction
The bore putting focal length post lens 5 is 20mm × 10mm, and focal length is 30mm, and the bore of the rearmounted short focus post lens 6 of meridian direction is
10mm × 8mm, focal length is 15mm.In total internal reflection prism array 4 number of prism be 2 pieces, the three dimensional structure of single prism with
Identical in embodiment 1.Fig. 5 is that in the embodiment of the present invention 2, the three dimensional structure diagram of total internal reflection prism array and light beam pass through
The index path of total internal reflection prism array.Wherein each prism is no spaced successively along sagitta of arc direction, along incident light axis direction according to
Secondary arrangement be spaced apart 6.6mm.
Before the input end face of circular input optical fibre 1 being placed in preposition short focus post lens 2 and the sagitta of arc direction of meridian direction
Put on the common focal plane of focal length post lens 3, optical fiber input signal light is via the preposition short focus post lens 2 of meridian direction and sagitta of arc side
To preposition focal length post lens 3 collimate respectively in the two directions after obtain major axis in sagitta of arc direction, short axle in meridian side
To oval collimated light beam, the size in oval collimated light beam sagitta of arc direction is 13.2mm, and the size of meridian direction is 6.6mm, that is,
The size in sagitta of arc direction is 2 times of meridian direction size, and the beam divergence angle in sagitta of arc direction is meridian direction beam divergence angle
1/2；Oval collimated light beam 7 vertical incidence after collimation to each prism in total internal reflection prism array 4 vertical incidence face 4-
1, enter prism tailing edge sagitta of arc direction and be divided into 2 sections of light beams, each section of light beam is respectively via the first fully reflecting surface 4-2 of each prism
After the second fully reflecting surface 4-3 reflection, finally from the 4-4 outgoing of vertical exit face, the rotation realizing elliptical beam is reset.After rearrangement
Collimated light beam 8 be still respectively 13.2mm and 6.6mm, but the light beam along sagitta of arc direction along the size of sagitta of arc direction and meridian direction
The angle of divergence is changed into 2 times of meridian direction beam divergence angle.Collimated light beam 8 after this rearrangement rearmounted focal length post through sagitta of arc direction again
After the rearmounted short focus post lens 6 of lens 5 and meridian direction focus in the two directions respectively, you can obtain width and be 50 μm, long
Spend the virtual slit 9 for 200 μm, and this virtual slit 9 numerical aperture in the two directions all remains 0.22.
Non-elaborated part of the present invention belongs to the known technology of those skilled in the art.
Claims (5)
1. a kind of using total internal reflection prism array realize high flux virtual slit optical system it is characterised in that：By meridian
The preposition short focus post lens in direction, the preposition focal length post lens in sagitta of arc direction, total internal reflection prism array, sagitta of arc direction rearmounted
Focal length post lens, the rearmounted short focus post lens composition of meridian direction；
The preposition short focus post lens of-meridian direction, the object space focal plane of the preposition short focus post lens of described meridian direction is located at circle
The end face of input optical fibre；
The preposition focal length post lens in-sagitta of arc direction, the preposition focal length post lens in described sagitta of arc direction are located at the preposition of meridian direction
After short focus post lens, and its object space focal plane also is located at the end face of circular input optical fibre；
- total internal reflection prism array, after described total internal reflection prism array is located at the preposition focal length post lens in sagitta of arc direction,
And its vertical input face is vertical with the optical axis of the preposition focal length post lens in sagitta of arc direction；
The rearmounted focal length post lens in-sagitta of arc direction, the rearmounted focal length post lens in described sagitta of arc direction are located at total internal reflection prism battle array
After the vertical output face of row, and its optical axis is vertical with the vertical output face of total internal reflection prism array；
The rearmounted short focus post lens of-meridian direction, the rearmounted short focus post lens of described meridian direction are located at the rearmounted of sagitta of arc direction
After focal length post lens, and its image space focal plane is overlapped with the image space focal plane of the rearmounted focal length post lens in sagitta of arc direction；
The ratio of the preposition focal length post lens in described sagitta of arc direction and the focal length of the preposition short focus post lens of meridian direction and entirely interior
In reflecting prism array, the number N of prism is equal to and narrows multiplying power to circular input optical fibre end face circular light spot；
The rearmounted focal length post lens in described sagitta of arc direction are equal to the sagitta of arc with the ratio of the focal length of the rearmounted short focus post lens of meridian direction
The ratio of the preposition focal length post lens in direction and the focal length of the preposition short focus post lens of meridian direction, empty to ensure the high flux obtaining
Intend the numerical aperture all with circular input optical fibre end face input signal light for the numerical aperture on meridian direction and sagitta of arc direction for the slit
Footpath is identical；The preposition focal length post lens in the preposition short focus post lens of described meridian direction and sagitta of arc direction are respectively used to defeated to circle
The flashlight entering fiber end face input is collimated in meridian direction and sagitta of arc direction, obtains a major axis in sagitta of arc side after collimation
To, short axle meridian direction ellipse light spot；
In described total internal reflection prism array, the work surface of single prism includes：Vertical input face, the first fully reflecting surface, second complete
Reflecting surface and vertical output face；Wherein, effective working area of vertical input face is the first fully reflecting surface on vertical input face
The region of projection, this view field is square, and the square length of side should be the 1/N, N of incident ellipse light spot long axis direction width
For the number of prism in prism array, the first fully reflecting surface and the second fully reflecting surface angle at 45 ° all with prism bases, but first is complete
Reflecting surface is parallel with the vertical line of incident light axis, and the second fully reflecting surface is parallel with incident light axis, so that incident illumination passes through this two
There are 90 ° of deflections, the refractive index of prism should be able to make flashlight be totally reflected when 45° angle is incident after reflecting surface.
2. a kind of optical system realizing high flux virtual slit using total internal reflection prism array according to claim 1
System it is characterised in that：Described total internal reflection prism array is used for ellipse light spot is split along sagitta of arc direction, then will divide
Ellipse light spot after cutting carries out rotation and resets.
3. a kind of optical system realizing high flux virtual slit using total internal reflection prism array according to claim 2
System it is characterised in that：The rearmounted short focus post lens of the rearmounted focal length post lens in described sagitta of arc direction and meridian direction are respectively used to
Ellipse light spot after rotation is reset is focused in sagitta of arc direction and meridian direction and focal plane overlaps, and finally can obtain on focal plane
Obtain required high flux virtual slit.
4. a kind of optical system realizing high flux virtual slit using total internal reflection prism array according to claim 2
System it is characterised in that：Described total internal reflection prism array can be by making the bottom surface gluing of single prism on the glass substrate
Form, each prism is no spaced successively along sagitta of arc direction, arrange at regular intervals successively along incident light axis direction, gap size
It is equal to the width of the ellipse light spot short-axis direction being incident to total internal reflection prism array.
5. a kind of optical system realizing high flux virtual slit using total internal reflection prism array according to claim 2
System it is characterised in that：In ellipse light spot vertical incidence after collimation extremely described total internal reflection prism array, each prism is vertically defeated
Enter face, enter prism tailing edge sagitta of arc direction and be divided into N section hot spot, N is the number of prism in prism array, each section of hot spot is respectively
After being reflected by the first fully reflecting surface of each prism and the second fully reflecting surface, finally from the outgoing of vertical output face, realize ellipse light spot
Rotation reset.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410613218.4A CN104330896B (en) | 2014-11-04 | 2014-11-04 | Optical system for realizing high-flux virtual slit by using total internal reflection prism array |
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| CN201410613218.4A CN104330896B (en) | 2014-11-04 | 2014-11-04 | Optical system for realizing high-flux virtual slit by using total internal reflection prism array |
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| CN104330896A CN104330896A (en) | 2015-02-04 |
| CN104330896B true CN104330896B (en) | 2017-02-15 |
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| EP3605045A1 (en) * | 2018-07-30 | 2020-02-05 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Slit homogenizer for spectral imaging |
| CN111221141B (en) * | 2020-01-17 | 2022-02-22 | 中国科学院长春光学精密机械与物理研究所 | Space light beam splitting array based on wave division front principle |
| CN115166986B (en) * | 2022-06-28 | 2023-09-08 | 福建光旭科技有限公司 | Clear facula plastic optical system in boundary |
| WO2024159375A1 (en) * | 2023-01-30 | 2024-08-08 | 华为技术有限公司 | Optical lens and optical imaging device |
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| US6870682B1 (en) * | 2003-09-30 | 2005-03-22 | Institut National D'optique | Apparatus for reshaping an optical beam bundle |
| CN1885094A (en) * | 2006-06-27 | 2006-12-27 | 中国科学院光电技术研究所 | Method for realizing beam shaping of area array semiconductor laser by total internal reflection type microprism array |
| US7483135B2 (en) * | 2006-07-14 | 2009-01-27 | Thermo Electron Scientific Instruments, Llc | Confocal spectrometer with astigmatic aperturing |
| EP2483734B8 (en) * | 2009-10-01 | 2021-08-11 | Tornado Spectral Systems, Inc. | Optical slicer for improving the spectral resolution of a dispersive spectrograph |
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Effective date of registration: 20190107 Address after: 277599 No. 1199 Ivy East Road, Tengzhou Economic Development Zone, Shandong Province Patentee after: TENGZHOU TENGHAI ANALYTICAL INSTRUMENTS Co.,Ltd. Address before: 610209 Shuangliu 350 Mailbox in Chengdu, Sichuan Province Patentee before: INSTITUTE OF OPTICS AND ELECTRONICS, CHINESE ACADEMY OF SCIENCES |
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