CN100593743C - Linetype broad visual field image space division optical assembly - Google Patents
Linetype broad visual field image space division optical assembly Download PDFInfo
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- CN100593743C CN100593743C CN200710172696A CN200710172696A CN100593743C CN 100593743 C CN100593743 C CN 100593743C CN 200710172696 A CN200710172696 A CN 200710172696A CN 200710172696 A CN200710172696 A CN 200710172696A CN 100593743 C CN100593743 C CN 100593743C
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- visual field
- line style
- imaging
- narrow slit
- division
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Abstract
The invention discloses an image-surface-division type optical element for linear-wide visual field, which is applicable for the visual field division of a wide visual field imaging spectrometer. Theoptical element comprises: a plurality of rectangular prisms for dividing linear visual field, and is characterized in that the effective work area of each rectangular prism is a linear narrow slit, which can perform visual field division of the light beam from a long linear geographical object and turn the divided visual field into separate light beams for the rational space arrangement of the subsequent optical elements. Light beams after division of each visual field enter a spectrum element for splitting and imaging on a area array detector. The high spectrum imaging is finally realized through the split joint of images.
Description
Technical field
The present invention relates to optical element, assembly, specifically be meant a kind of linetype broad visual field image space division optical assembly, it is used for the visual field of the wide visual field of line style is cut apart, and is specially adapted to the visual field of imaging photoelectric instrument that wide view field imaging spectrometer of similar pull-broom type etc. has a wide visual field of line style of secondary imaging and cuts apart.
Background technology
The pull-broom type imaging spectrometer utilizes large-scale focal plane array detector to make according to the principle of push broom imaging and grating beam splitting, can obtain the space and the spectral information of long narrow atural object band at one time.Because the difficulty that the restriction of optical efficiency and big planar array detector are made, the current single imaging spectrometer field angle that exists in the world generally is not more than 30 °, thereby operating efficiency is lower, and these have all limited the usable range of hyperspectral imager greatly.Adopt the method for splicing in the visual field to reach the high-resolution spectroscopy imaging of big visual field ground object target, the consideration of arranging for optical path space, need to solve the technical barrier of line style big visual field space multi-way beam split, this has become one of major limitation of pull-broom type imaging spectrometer visual field expansion, therefore, the visual field that solves the big visual field of line style is cut apart, and each optical path space of cutting apart the visual field separates, to realizing that big visual field high light spectrum image-forming is with of great practical value.
Summary of the invention
The purpose of this invention is to provide a kind of linetype broad visual field image space division optical assembly carries out the visual field to big line style visual field and cuts apart, and the visual-field beam that splits spatially can be separated, thereby the visual field that solves the big visual field of line style is cut apart, and cuts apart the problem of visual field optical path space separation difficulty.
It is as follows that technology of the present invention solves thinking:
1. wide view field imaging camera lens is imaged as narrow long type image planes with the line style ground object target in the visual field on its focal plane, according to the overall beam split demand of instrument, place the transmission or the short narrow slit of reflection-type of respective numbers at this narrow long type image planes place, these narrow slits are conllinear and place, narrow long type intermediate image plane to hyperspectral imager is cut apart, and the image planes that spatially will cut apart are separated to different directions.
2. the short narrow slit of transmission or reflection-type can be produced on the hypotenuse or parallel flat of right-angle prism, and the narrow slit of transmission-type narrow slit partly plates anti-reflection film, all the other light area black chromium plating films; The narrow slit of reflection-type narrow slit partly plates reflectance coating, all the other light area plating anti-reflection films.
The ultimate principle that the wide field image space of planes of line style is cut apart is: utilize the transmission and the reflection-type narrow slit that are positioned over the intermediate image plane position that image planes are divided into the part that a plurality of spaces are separated from each other, image planes after cutting apart and separating enter follow-up image-forming assembly separately separately, the image of respectively cutting apart image planes that is obtained splices by image processing software, thereby reaches the final purpose of wide view field imaging.
The invention has the advantages that: compact conformation, segmented flexible, adopt the short narrow slit of several transmissions and reflection, the seamless big visual field of the long-line array image planes of cutting apart, the difficulty that the visual field of the hyperspectral imager that the difficulty owing to the restriction of optical efficiency and big planar array detector manufacturing causes can't increase be can effectively solve, the operating efficiency and the scope of application of the operation of imaging spectral instrument improved.
Description of drawings
Fig. 1 is an embodiment of the invention synoptic diagram 1;
Among the figure: 1---No. 1 right-angle prism;
2---No. 2 right-angle prisms;
101---the reflection narrow slit;
201---the reflection narrow slit.
Fig. 2 is an embodiment of the invention synoptic diagram 2;
Among the figure: 3---No. 1 parallel flat;
4---No. 2 parallel flats;
301---the reflection narrow slit;
401---the reflection narrow slit.
Fig. 3 is the index path of accompanying drawing 1 embodiment of the present invention;
Among the figure: 6---wide view field imaging camera lens;
7---follow-up optical module;
8---follow-up optical module.
Fig. 4 is the index path of accompanying drawing 2 embodiment of the present invention.
Embodiment
A better embodiment below in conjunction with accompanying drawing 1 to accompanying drawing 4 provides is described in further detail the present invention.
Accompanying drawing 3, accompanying drawing 4 is respectively the index path of accompanying drawing 1 of the present invention and accompanying drawing 2 specific embodiments, as shown in Figure 3, wide view field imaging camera lens 6 will be grown the line style ground object target and image in slit 101,201 places, be reflected into two by 101 and 201 and restraint the light beam of apart, enter follow-up optical module 7,8, thereby reach the purpose that the visual field is cut apart and space optical path separates.Change 1, No. 2 right-angle prisms 2 of No. 1 right-angle prism shown in Figure 3 into No. 1 parallel flat 3, No. 2 parallel flats 4 respectively, correspondingly to change 301,401 into be exactly the light path synoptic diagram shown in the accompanying drawing 4 to narrow slit.
As mentioned above, of the present invention as imaging lens focal length, narrow slit length, narrow slit quantity, detection pixel size combinations that employing is different can realize the big visual field spectrum imaging arrangement of different imaging resolutions, satisfy the development needs of wide view field imaging spectrometer.
Claims (2)
1. the wide field image space of planes of line style Splittable optical module, it is combined by 2 or 2 above right-angle prisms, it is characterized in that: its effective perform region of described right-angle prism is to be made in to be the reflection that conllinear places or the line style narrow slit of transmission on these right-angle prism inclined-planes, these line style narrow slits align mutually and are spliced to form the long narrow slit of seamless line style, long line style ground object target light beam can be carried out the visual field on demand cuts apart, and the light beam of the formation of the light beam after will respectively cutting apart apart, so that rationally arrange in the space of subsequent optical assembly.
2. the wide field image space of planes of a kind of line style according to claim 1 Splittable optical module, it is characterized in that: described right-angle prism can replace with parallel flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710172696A CN100593743C (en) | 2007-12-21 | 2007-12-21 | Linetype broad visual field image space division optical assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710172696A CN100593743C (en) | 2007-12-21 | 2007-12-21 | Linetype broad visual field image space division optical assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101211005A CN101211005A (en) | 2008-07-02 |
| CN100593743C true CN100593743C (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710172696A Expired - Fee Related CN100593743C (en) | 2007-12-21 | 2007-12-21 | Linetype broad visual field image space division optical assembly |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102891956A (en) * | 2012-09-25 | 2013-01-23 | 北京理工大学 | Method for designing compression imaging system based on coded aperture lens array |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5898167A (en) * | 1974-09-26 | 1999-04-27 | Olympus Optical Co., Ltd. | Optical pick-up head and integrated type optical unit for use in optical pick-up head |
| JP2000329697A (en) * | 1999-03-18 | 2000-11-30 | Seiko Instruments Inc | High-frequency inductively coupled plasma emission spectrochemical analyzer |
| CN1482793A (en) * | 2003-07-17 | 2004-03-17 | 中国科学院上海技术物理研究所 | Wide visual field divided infrared/visible light detector array assembly |
| CN2656969Y (en) * | 2003-07-17 | 2004-11-17 | 中国科学院上海技术物理研究所 | Infrared alignment detector assembly |
| CN1664612A (en) * | 2005-03-18 | 2005-09-07 | 中国科学院上海技术物理研究所 | Wide viewing field and high resolution ratio imaging arrangement for pushbroom optical spectrum imagers |
-
2007
- 2007-12-21 CN CN200710172696A patent/CN100593743C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5898167A (en) * | 1974-09-26 | 1999-04-27 | Olympus Optical Co., Ltd. | Optical pick-up head and integrated type optical unit for use in optical pick-up head |
| JP2000329697A (en) * | 1999-03-18 | 2000-11-30 | Seiko Instruments Inc | High-frequency inductively coupled plasma emission spectrochemical analyzer |
| CN1482793A (en) * | 2003-07-17 | 2004-03-17 | 中国科学院上海技术物理研究所 | Wide visual field divided infrared/visible light detector array assembly |
| CN2656969Y (en) * | 2003-07-17 | 2004-11-17 | 中国科学院上海技术物理研究所 | Infrared alignment detector assembly |
| CN1664612A (en) * | 2005-03-18 | 2005-09-07 | 中国科学院上海技术物理研究所 | Wide viewing field and high resolution ratio imaging arrangement for pushbroom optical spectrum imagers |
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| CN101211005A (en) | 2008-07-02 |
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