CN102096176A - Near infrared lens for laser night-vision device - Google Patents
Near infrared lens for laser night-vision device Download PDFInfo
- Publication number
- CN102096176A CN102096176A CN201010609811.3A CN201010609811A CN102096176A CN 102096176 A CN102096176 A CN 102096176A CN 201010609811 A CN201010609811 A CN 201010609811A CN 102096176 A CN102096176 A CN 102096176A
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- China
- Prior art keywords
- lens
- focusing lens
- near infrared
- mirror
- focusing
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Abstract
The invention relates to a lens, in particular to a near infrared lens for a laser night-vision device. From an object side to an image side, the lens comprises a focusing lens 1 with positive diopter, a focusing lens 2 with positive diopter, a glued lens with positive diopter, a diaphragm, a glued lens 2 with positive diopter, a post-coordination lens 1 with negative diopter, a post-coordination lens 2 with negative diopter and an image face in turn and has a double Gauss lens structure, wherein the glued lens 1 and the glued lens 2 are respectively formed by gluing two lens with positive focal power and negative focal power, and a groove for mounting and positioning is formed on the glued lens 1; and the focusing lens 1 and the focusing lens 2 are used for collecting light beams and adjusting focus and are connected to a main lens cone by screw threads. The optical system is relatively simplified; and due to the double Gauss lens structure, the lens number is reduced, and the structure is compact, and the system has large aperture and long focus length, so the night viewing capability is greatly improved.
Description
Technical field
The present invention relates to a kind of camera lens, particularly laser night-vision device near infrared camera lens.
Background technology
The near infrared camera lens clear aperture of great majority application at present is smaller, system's focal distance ratio is lacked and all is in visible light wave range design optical system, the transparency range of widening camera lens in the way of near-infrared band plating anti-reflection film, but She Ji result makes descend in the resolution of near-infrared laser illumination wave band camera lens night like this, contrast is also very poor, and picture quality does not satisfy the observation requirement.
Summary of the invention
In order to overcome the shortcoming of prior art, the invention provides a kind of laser night-vision device near infrared camera lens.Its optical system is simplified relatively, adopts double gauss type structure, less number of lenses and compact conformation, and the big focal length of system's bore is long, has greatly improved the observing capacity at night.
The present invention solves the technical scheme that its technical matters takes: comprise back group two mirror and the image planes of gummed mirror one, the diaphragm of focusing lens two, the positive diopter of focusing lens one with positive diopter, positive diopter, the gummed mirror two of positive diopter, negative dioptric back group one mirror, positive diopter from the object side to the image side successively, have the double-Gauss lenses structure; Described gummed mirror one and gummed mirror two are respectively two lens gummeds by positive light coke and negative power and form, and have the groove of being convenient to installing and locating on gummed mirror one; Focusing lens one and focusing lens two are used for collecting light beam and focusing, and focusing lens one and focusing lens dual-purpose are threaded onto on the body tube.
The present invention adopts the double-Gauss lenses structure, the focusing group makes target blur-free imaging all the time, near infrared filter filtering visible wavelength stray light, even under night condition,, and utilize under the condition near infrared light also can blur-free imaging by day in the face of intense light source can not make the saturated and lose objects image of video camera yet.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing is an optical structure chart of the present invention.
Embodiment
As shown in drawings, comprise back group two mirror 6 and the image planes 8 of gummed mirror 1, the diaphragm 7 of focusing lens 24, the positive diopter of focusing lens 1 with positive diopter, positive diopter, the gummed mirror 22 of positive diopter, negative dioptric back group one mirror 5, positive diopter from the object side to the image side successively, have the double-Gauss lenses structure.Described gummed mirror 1 and gummed mirror 22 are respectively two lens gummeds by positive light coke and negative power and form, and have the groove of being convenient to installing and locating on gummed mirror 1.Focusing lens 1 and focusing lens 24 are used for collecting light beam and focusing, and focusing lens 1 and focusing lens 24 usefulness are threaded onto on the body tube.
In order to improve picture contrast and to have certain mist transmitting performance filtering interfering light, before the described focusing lens 1 near infrared optical filtering 9 is housed.
To image planes S18, promptly length overall is 115.26mm from first S1 of focusing lens 1, and length overall with the ratio of focal length is
The parameter of described near infrared optical filtering 9, focusing lens 1, focusing lens 24, gummed mirror 1, diaphragm 7, gummed mirror 26, back group one mirror 5, back group two mirrors 6 and image planes 8 sees the following form:
| Object | Infinity | Infinity | |
| S1 | Infinity | 3 | HWB760 |
| S2 | Infinity | 1 | |
| S3 | 117.22 | 8.3 | ZBAF3 |
| S4 | -636.8 | 0.1 | |
| S5 | 73 | 7.12 | ZK9 |
| S6 | 193.02 | 9.66 | |
| S7 | 49.32 | 9.02 | QK3 |
| Stop | -384 | 4 | ZF6 |
| S9 | 33.717 | 14.36 | |
| S10 | Infinity | 3.03 | |
| S11 | 22.28 | 7.77 | K10 |
| S12 | 48.75 | 2.01 | QK3 |
| S13 | 53.74 | 7.77 | |
| S14 | 1235.9 | 5 | QK3 |
| S15 | 14.452 | 8.6 | |
| S16 | 43.136 | 3.58 | QF3 |
| S17 | -51.5 | 21.2 | |
| Image(S18) | Infinity | 0 |
Claims (4)
1. laser night-vision device near infrared camera lens, it is characterized in that: comprise focusing lens one (3) from the object side to the image side successively with positive diopter, the focusing lens two (4) of positive diopter, the gummed mirror one (1) of positive diopter, diaphragm (7), the gummed mirror two (2) of positive diopter, negative dioptric back group one mirror (5), back group two mirror (6) of positive diopter and image planes (8), has the double-Gauss lenses structure, described gummed mirror one (1) and gummed mirror two (2) are respectively two lens gummeds by positive light coke and negative power and form, on gummed mirror one (1), have the groove of being convenient to installing and locating, focusing lens one (3) and focusing lens two (4) are used for collecting light beam and focusing, and focusing lens one (3) and focusing lens two (4) are with being threaded onto on the body tube.
2. laser night-vision device near infrared camera lens according to claim 1 is characterized in that: described focusing lens one (3) the preceding near infrared optical filtering (9) that is equipped with.
3. laser night-vision device near infrared camera lens according to claim 1 is characterized in that: to image planes S18, promptly length overall is 115.26mm from first S1 of focusing lens one (3), and length overall is L/f '=1.15 with the ratio of focal length.
4. laser night-vision device near infrared camera lens according to claim 1 is characterized in that: the parameter of described near infrared optical filtering (9), focusing lens one (3), focusing lens two (4), gummed mirror one (1), diaphragm (7), gummed mirror two (6), back group one mirror (5), back group two mirrors (6) and image planes (8) sees the following form:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010609811.3A CN102096176A (en) | 2010-12-15 | 2010-12-15 | Near infrared lens for laser night-vision device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010609811.3A CN102096176A (en) | 2010-12-15 | 2010-12-15 | Near infrared lens for laser night-vision device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102096176A true CN102096176A (en) | 2011-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010609811.3A Pending CN102096176A (en) | 2010-12-15 | 2010-12-15 | Near infrared lens for laser night-vision device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102096176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109996991A (en) * | 2017-02-13 | 2019-07-09 | 欧姆龙株式会社 | Laser illuminator system and perimeter monitoring sensor with the laser illuminator system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4319809A (en) * | 1980-04-15 | 1982-03-16 | The United States Of America As Represented By The Secretary Of The Air Force | Symmetrical 1:1 photographic objective lens |
| CN1115578C (en) * | 1998-12-09 | 2003-07-23 | 中国科学院西安光学精密机械研究所 | Image space telecentric double-Gaussian optical system |
| CN100406951C (en) * | 2006-09-11 | 2008-07-30 | 中国科学院上海技术物理研究所 | Ultraviolet object lens in aperture wide wave range for ultraviolet detection |
-
2010
- 2010-12-15 CN CN201010609811.3A patent/CN102096176A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4319809A (en) * | 1980-04-15 | 1982-03-16 | The United States Of America As Represented By The Secretary Of The Air Force | Symmetrical 1:1 photographic objective lens |
| CN1115578C (en) * | 1998-12-09 | 2003-07-23 | 中国科学院西安光学精密机械研究所 | Image space telecentric double-Gaussian optical system |
| CN100406951C (en) * | 2006-09-11 | 2008-07-30 | 中国科学院上海技术物理研究所 | Ultraviolet object lens in aperture wide wave range for ultraviolet detection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109996991A (en) * | 2017-02-13 | 2019-07-09 | 欧姆龙株式会社 | Laser illuminator system and perimeter monitoring sensor with the laser illuminator system |
| US11269062B2 (en) | 2017-02-13 | 2022-03-08 | Omron Corporation | Laser illumination device and peripheral monitoring sensor provided with same |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |