CN102681161A - Small imaging optical system with long focal length and high image quality - Google Patents
Small imaging optical system with long focal length and high image quality Download PDFInfo
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- CN102681161A CN102681161A CN2012101665164A CN201210166516A CN102681161A CN 102681161 A CN102681161 A CN 102681161A CN 2012101665164 A CN2012101665164 A CN 2012101665164A CN 201210166516 A CN201210166516 A CN 201210166516A CN 102681161 A CN102681161 A CN 102681161A
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Abstract
The invention discloses a small imaging optical system with long focal length and high image quality, and relates to an imaging optical system. The purpose of the invention is to solve the problems that the occupied space is large and the realization of related photoelectric detection purposes is limited when the current optical system realizes the long focal length. In the small imaging optical system, a fifth spherical lens (5), a sixth spherical lens (6) and a seventh spherical lens (7) are sequentially arranged from left to right; a first spherical lens (1), a second spherical lens (2), a third spherical lens (3) and a fourth spherical lens (4) are sequentially arranged from left to right; an eighth spherical lens (8), a ninth spherical lens (9), a tenth spherical lens (10) and an eleventh spherical lens (11) are sequentially arranged from left to right; and all the spherical lens are spherical lens made of zinc selenide crystal materials. The small imaging optical system is particularly suitable for vehicle-mounted, airborne or spaceborne spaces to use.
Description
Technical field
The present invention relates to a kind of imaging optical system, be specifically related to the burnt high picture element imaging optical system of a kind of small-sized length.
Background technology
Some Photodetection systems are limited by detection viewing field and detector size, need imaging system to have long-focus.But when existing optical system realized long-focus, its space that occupies was bigger, has limited the realization of relevant photodetection purpose.
Summary of the invention
The objective of the invention is in order to solve existing optical system and to realize long-focus, its space that occupies is big, has limited the problem that relevant photodetection purpose realizes, and then provides a kind of small-sized length burnt high picture element imaging optical system.
Technical scheme of the present invention is: the burnt high picture element imaging optical system of a kind of small-sized length comprises telescopic ocular mirror group; Telescopic ocular mirror group comprises the 5th spherical lens, the 6th spherical lens and the 7th spherical lens, and the 5th spherical lens, the 6th spherical lens and the 7th spherical lens are set up in parallel from left to right successively, and said imaging optical system also comprises telephotolens mirror group, telephoto objective mirror group and detector; Telescopic ocular mirror group is arranged between telephotolens mirror group and the telephoto objective mirror group; The diameter of detector is 5mm, and detector is arranged on the rear of telephoto objective mirror group, and the center of telescopic ocular mirror group, telephotolens mirror group, telephoto objective mirror group and detector is all on same straight line; Spacing between the 5th spherical lens and the 6th spherical lens is 0.5mm; Spacing between the 6th spherical lens and the 7th spherical lens is 10mm, and telephotolens mirror group comprises first spherical lens, second spherical lens, the 3rd spherical lens and the 4th spherical lens, and first spherical lens, second spherical lens, the 3rd spherical lens and the 4th spherical lens are set up in parallel from left to right successively; Spacing between first spherical lens and second spherical lens is 3mm; Spacing between second spherical lens and the 3rd spherical lens is 3mm, and the spacing between the 3rd spherical lens and the 4th spherical lens is 6mm, and the spacing between the 4th spherical lens and the 5th spherical lens is 73mm; Telephoto objective mirror group comprises the 8th spherical lens, the 9th spherical lens, the tenth spherical lens and the 11 spherical lens; The 8th spherical lens, the 9th spherical lens, the tenth spherical lens and the 11 spherical lens are set up in parallel from left to right successively, and the spacing between the 7th spherical lens and the 8th spherical lens is 0.8mm, and the spacing between the 8th spherical lens and the 9th spherical lens is 2mm; Spacing between the 9th spherical lens and the tenth spherical lens is 40.2mm; Spacing between the tenth spherical lens and the 11 spherical lens is 2mm, and said first spherical lens to the, 11 spherical lenses are processed by the zinc selenide crystal material, and the focal length of said imaging optical system is 2900mm; The reception bore is 60mm; Field angle is 0.1 degree, length 260mm, and using wavelength is 1.064 μ m.
The present invention compared with prior art has following effect: 1. focal length of the present invention is 2900mm, and the reception bore is 60mm, and field angle is 0.1 degree; The diameter of detector is 5mm, system length 260mm, and using wavelength is 1.064 μ m; It is little to take up space, and image quality has reached diffraction limit.According to present technological level, the transmitance of system can reach more than 95%.The present invention has realized collecting, and small-sized, long Jiao and high imaging quality are the imaging optical system of one.2. telescopic system of the present invention (the telescopic system here is meant the general name of telescopic ocular mirror group and telephotolens mirror group) is made up of seven spherical lenses; Enlargement ratio is 6 times; Its function is that the object space detection viewing field is amplified, thereby the focal length that telephoto objective is born is reduced to the sixth of the total focal length of system.Telephoto objective mirror group is made up of four spherical lenses, makes its system length much smaller than its focal length of bearing through selecting appropriate initial configuration, and image quality is high.3. lens of the present invention all adopt sphere face type, on engineering, realize easily, and can reach higher processing precision, and processing cost is low, is convenient to promote the use of on a large scale.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Embodiment
Embodiment one: combine Fig. 1 that this embodiment is described; The burnt high picture element imaging optical system of a kind of small-sized length of this embodiment comprises telescopic ocular mirror group; Telescopic ocular mirror group comprises that the 5th spherical lens 5, the 6th spherical lens 6 and the 7th spherical lens 7, the five spherical lenses 5, the 6th spherical lens 6 and the 7th spherical lens 7 are set up in parallel from left to right successively, and said imaging optical system also comprises telephotolens mirror group, telephoto objective mirror group and detector 12; Telescopic ocular mirror group is arranged between telephotolens mirror group and the telephoto objective mirror group; The diameter of detector 12 is 5mm, and detector 12 is arranged on the rear of telephoto objective mirror group, and the center of telescopic ocular mirror group, telephotolens mirror group, telephoto objective mirror group and detector 12 is all on same straight line; Spacing between the 5th spherical lens 5 and the 6th spherical lens 6 is 0.5mm; Spacing between the 6th spherical lens 6 and the 7th spherical lens 7 is 10mm, and telephotolens mirror group comprises that first spherical lens 1, second spherical lens 2, the 3rd spherical lens 3 and the 4th spherical lens 4, the first spherical lenses 1, second spherical lens 2, the 3rd spherical lens 3 and the 4th spherical lens 4 are set up in parallel from left to right successively; Spacing between first spherical lens 1 and second spherical lens 2 is 3mm; Spacing between second spherical lens 2 and the 3rd spherical lens 3 is 3mm, and the spacing between the 3rd spherical lens 3 and the 4th spherical lens 4 is 6mm, and the spacing between the 4th spherical lens 4 and the 5th spherical lens 5 is 73mm; Telephoto objective mirror group comprises the 8th spherical lens 8, the 9th spherical lens 9, the tenth spherical lens 10 and the 11 spherical lens 11; The 8th spherical lens 8, the 9th spherical lens 9, the tenth spherical lens 10 and the 11 spherical lens 11 are set up in parallel from left to right successively, and the spacing between the 7th spherical lens 7 and the 8th spherical lens 8 is 0.8mm, and the spacing between the 8th spherical lens 8 and the 9th spherical lens 9 is 2mm; Spacing between the 9th spherical lens 9 and the tenth spherical lens 10 is 40.2mm; Spacing between the tenth spherical lens 10 and the 11 spherical lens 11 is 2mm, and said first spherical lens the 1 to the 11 spherical lens 11 is processed by the zinc selenide crystal material, and the focal length of said imaging optical system is 2900mm; The reception bore is 60mm; Field angle is 0.1 degree, length 260mm, and using wavelength is 1.064 μ m.
This embodiment is arranged on the telephotolens mirror group of looking in the distance, eyepiece mirror group, telephoto objective mirror group and detector 12 in the housing of photoelectric detection equipment in use.
Embodiment two: combine Fig. 1 that this embodiment is described, the spherical lens bore of the 5th spherical lens 5, the 6th spherical lens 6 and the 7th spherical lens 7 in the telescopic ocular mirror group of this embodiment is respectively 12mm, 11mm and 11mm.So be provided with, can make total system not have vignetting, guarantee making full use of of luminous energy.Other composition is identical with embodiment one with annexation.
Embodiment three: combine Fig. 1 that this embodiment is described, the spherical lens thickness of the 5th spherical lens 5, the 6th spherical lens 6 and the 7th spherical lens 7 in the telescopic ocular mirror group of this embodiment is respectively 2mm, 2mm and 3mm.So be provided with, realize the focal length of system, eliminate the aberration of system, guarantee image quality, convenient actual processing guarantees machining precision and result of use.Other composition is identical with embodiment one or two with annexation.
Embodiment four: combine Fig. 1 that this embodiment is described, the spherical radius of the 5th spherical lens 5, the 6th spherical lens 6 and the 7th spherical lens 7 in the telescopic ocular mirror group of this embodiment is respectively 247.626mm ,-440.705mm; 145.995mm, 27.489mm; 73.233mm, 158.484mm.So be provided with, can guarantee the focal length of system, eliminate the aberration of system simultaneously, guarantee image quality.Other composition is identical with embodiment one, two or three with annexation.
Embodiment five: combine Fig. 1 that this embodiment is described, the spherical lens bore of first spherical lens 1 of the telephotolens mirror group of this embodiment, second spherical lens 2, the 3rd spherical lens 3 and the 4th spherical lens 4 is respectively 60mm, 56mm, 50mm and 40mm.So be provided with, can make total system not have vignetting, guarantee making full use of of luminous energy.Other composition is identical with embodiment one or four with annexation.
Embodiment six: combine Fig. 1 that this embodiment is described, the spherical lens thickness of first spherical lens 1 of the telephotolens mirror group of this embodiment, second spherical lens 2, the 3rd spherical lens 3 and the 4th spherical lens 4 is 8mm.So be provided with, realize the focal length of system, eliminate the aberration of system, guarantee image quality, convenient actual processing guarantees machining precision and result of use.Other composition is identical with embodiment one or five with annexation.
Embodiment seven: combine Fig. 1 that this embodiment is described, the spherical radius of first spherical lens 1 of the telephotolens mirror group of this embodiment, second spherical lens 2, the 3rd spherical lens 3 and the 4th spherical lens 4 is respectively 110.99mm, 3884.975mm;-352.941mm ,-505.768mm; 56.365mm, 56.187mm; 194.711mm, 61.780mm.So be provided with, can guarantee the focal length of system, eliminate the aberration of system simultaneously, guarantee image quality.Other composition and annexation and embodiment one, five or six phase are together.
Embodiment eight: combine Fig. 1 that this embodiment is described, the spherical lens bore of the 8th spherical lens 8 of the telephoto objective mirror group of this embodiment, the 9th spherical lens 9, the tenth spherical lens 10 and the 11 spherical lens 11 is respectively 11mm, 10mm, 3mm and 3mm.So be provided with, can make total system not have vignetting, guarantee making full use of of luminous energy.Other composition is identical with embodiment seven with annexation.
Embodiment nine: combine Fig. 1 that this embodiment is described, the spherical lens thickness of the 8th spherical lens 8, the 9th spherical lens 9 and the tenth spherical lens 10 of the telephoto objective mirror group of this embodiment is respectively 3mm, 3mm and 2mm.So be provided with, realize the focal length of system, eliminate the aberration of system, guarantee image quality, convenient actual processing guarantees machining precision and result of use.Other composition is identical with embodiment one, five or eight with annexation.
Embodiment ten: combine Fig. 1 that this embodiment is described; The spherical radius of the 8th spherical lens 8 of the telephoto objective mirror group of this embodiment, the 9th spherical lens 9, the tenth spherical lens 10 and the 11 spherical lens 11 is respectively 92.400mm, 2203.038mm;-559.161mm, 159.228mm; 36.699mm, 17.979mm; 41.691mm, 20.269mm.So be provided with, can guarantee the focal length of system, eliminate the aberration of system simultaneously, guarantee image quality.Other composition is identical with embodiment nine with annexation.
Principle of work of the present invention is:
The imaging signal that the present invention is used for space photoelectricity imaging detection purposes receives; Imaging signal with certain visual angle is from first spherical lens, 1 entering system; Then; Successively through second spherical lens 2, the 3rd spherical lens 3, the 4th spherical lens 4, the 5th spherical lens 5, the 6th spherical lens 6, the 7th spherical lens 7, the 8th spherical lens 8, the 9th spherical lens 9, the tenth spherical lens 10 and the 11 spherical lens 11; On detector 12, become the target picture that adapts with detector size at last, realize relevant detection purpose.
Claims (10)
1. burnt high picture element imaging optical system of small-sized length; It comprises telescopic ocular mirror group; Telescopic ocular mirror group comprises the 5th spherical lens (5), the 6th spherical lens (6) and the 7th spherical lens (7); The 5th spherical lens (5), the 6th spherical lens (6) and the 7th spherical lens (7) are set up in parallel from left to right successively; It is characterized in that: said imaging optical system also comprises telephotolens mirror group, telephoto objective mirror group and detector (12); Telescopic ocular mirror group is arranged between telephotolens mirror group and the telephoto objective mirror group; The diameter of detector (12) is 5mm, and detector (12) is arranged on the rear of telephoto objective mirror group, and the center of telescopic ocular mirror group, telephotolens mirror group, telephoto objective mirror group and detector (12) is all on same straight line; Spacing between the 5th spherical lens (5) and the 6th spherical lens (6) is 0.5mm; Spacing between the 6th spherical lens (6) and the 7th spherical lens (7) is 10mm, and telephotolens mirror group comprises first spherical lens (1), second spherical lens (2), the 3rd spherical lens (3) and the 4th spherical lens (4), and first spherical lens (1), second spherical lens (2), the 3rd spherical lens (3) and the 4th spherical lens (4) are set up in parallel from left to right successively; Spacing between first spherical lens (1) and second spherical lens (2) is 3mm; Spacing between second spherical lens (2) and the 3rd spherical lens (3) is 3mm, and the spacing between the 3rd spherical lens (3) and the 4th spherical lens (4) is 6mm, and the spacing between the 4th spherical lens (4) and the 5th spherical lens (5) is 73mm; Telephoto objective mirror group comprises the 8th spherical lens (8), the 9th spherical lens (9), the tenth spherical lens (10) and the 11 spherical lens (11); The 8th spherical lens (8), the 9th spherical lens (9), the tenth spherical lens (10) and the 11 spherical lens (11) are set up in parallel from left to right successively, and the spacing between the 7th spherical lens (7) and the 8th spherical lens (8) is 0.8mm, and the spacing between the 8th spherical lens (8) and the 9th spherical lens (9) is 2mm; Spacing between the 9th spherical lens (9) and the tenth spherical lens (10) is 40.2mm; Spacing between the tenth spherical lens (10) and the 11 spherical lens (11) is 2mm, and said first spherical lens (1) is processed by the zinc selenide crystal material to the 11 spherical lens (11), and the focal length of said imaging optical system is 2900mm; The reception bore is 60mm; Field angle is 0.1 degree, length 260mm, and using wavelength is 1.064 μ m.
2. according to the burnt high picture element imaging optical system of the said a kind of small-sized length of claim 1, it is characterized in that: the spherical lens bore of the 5th spherical lens (5) in the said telescopic ocular mirror group, the 6th spherical lens (6) and the 7th spherical lens (7) is respectively 12mm, 11mm and 11mm.
3. according to claim 1 or the burnt high picture element imaging optical system of 2 said a kind of small-sized length, it is characterized in that: the spherical lens thickness of the 5th spherical lens (5) in the said telescopic ocular mirror group, the 6th spherical lens (6) and the 7th spherical lens (7) is respectively 2mm, 2mm and 3mm.
4. according to the burnt high picture element imaging optical system of the said a kind of small-sized length of claim 3; It is characterized in that: the spherical radius of the 5th spherical lens (5) in the said telescopic ocular mirror group, the 6th spherical lens (6) and the 7th spherical lens (7) is respectively 247.626mm ,-440.705mm; 145.995mm, 27.489mm; 73.233mm, 158.484mm.
5. according to the burnt high picture element imaging optical system of the said a kind of small-sized length of claim 1, it is characterized in that: the spherical lens bore of first spherical lens (1) of said telephotolens mirror group, second spherical lens (2), the 3rd spherical lens (3) and the 4th spherical lens (4) is respectively 60mm, 56mm, 50mm and 40mm.
6. according to claim 1 or the burnt high picture element imaging optical system of 5 said a kind of small-sized length, it is characterized in that: the spherical lens thickness of first spherical lens (1) of said telephotolens mirror group, second spherical lens (2), the 3rd spherical lens (3) and the 4th spherical lens (4) is 8mm.
7. according to the burnt high picture element imaging optical system of the said a kind of small-sized length of claim 6; It is characterized in that: the spherical radius of first spherical lens (1) of said telephotolens mirror group, second spherical lens (2), the 3rd spherical lens (3) and the 4th spherical lens (4) is respectively 110.99mm, 3884.975mm;-352.941mm ,-505.768; 56.365mm, 56.187mm; 194.711mm, 61.780mm.
8. according to the burnt high picture element imaging optical system of the said a kind of small-sized length of claim 1, it is characterized in that: the spherical lens bore of the 8th spherical lens (8) of said telephoto objective mirror group, the 9th spherical lens (9), the tenth spherical lens (10) and the 11 spherical lens (11) is respectively 11mm, 10mm, 3mm and 3mm.
9. according to claim 1 or the burnt high picture element imaging optical system of 8 said a kind of small-sized length, it is characterized in that: the spherical lens thickness of the 8th spherical lens (8) of said telephoto objective mirror group, the 9th spherical lens (9) and the tenth spherical lens (10) is respectively 3mm, 3mm and 2mm.
10. according to the burnt high picture element imaging optical system of the said a kind of small-sized length of claim 9; It is characterized in that: the spherical radius of the 8th spherical lens (8) of said telephoto objective mirror group, the 9th spherical lens (9), the tenth spherical lens (10) and the 11 spherical lens (11) is respectively 92.400mm, 2203.038mm;-559.161mm, 159.228mm; 36.699mm, 17.979mm; 41.691mm, 20.269mm.
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| CN201210166516.4A CN102681161B (en) | 2012-05-25 | 2012-05-25 | Small imaging optical system with long focal length and high image quality |
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| CN201210166516.4A CN102681161B (en) | 2012-05-25 | 2012-05-25 | Small imaging optical system with long focal length and high image quality |
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| CN102681161A true CN102681161A (en) | 2012-09-19 |
| CN102681161B CN102681161B (en) | 2014-04-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592745A (en) * | 2013-11-28 | 2014-02-19 | 长春理工大学 | Telephoto type lens image rotating telescope objective |
| CN104570276A (en) * | 2013-10-09 | 2015-04-29 | 睿励科学仪器（上海）有限公司 | Tubular lens of image recognition system and image recognition system employing tubular lens |
| CN105739049A (en) * | 2016-04-14 | 2016-07-06 | 南京昂驰光电科技有限公司 | Starlight-level road monitoring 50mm zoom optical lens assembly |
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| CN101581823A (en) * | 2008-05-13 | 2009-11-18 | 比亚迪股份有限公司 | Camera lens for projector |
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2012
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Patent Citations (4)
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| CN101581823A (en) * | 2008-05-13 | 2009-11-18 | 比亚迪股份有限公司 | Camera lens for projector |
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| 段志姣: "《远焦系统望远性的测量》", 《计量与测试技术》, vol. 32, no. 3, 31 March 2005 (2005-03-31), pages 4 - 7 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570276A (en) * | 2013-10-09 | 2015-04-29 | 睿励科学仪器（上海）有限公司 | Tubular lens of image recognition system and image recognition system employing tubular lens |
| CN103592745A (en) * | 2013-11-28 | 2014-02-19 | 长春理工大学 | Telephoto type lens image rotating telescope objective |
| CN105739049A (en) * | 2016-04-14 | 2016-07-06 | 南京昂驰光电科技有限公司 | Starlight-level road monitoring 50mm zoom optical lens assembly |
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