CN112859282B - Optical system double-optical-wedge device and zero position adjusting method thereof - Google Patents
Optical system double-optical-wedge device and zero position adjusting method thereof Download PDFInfo
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- CN112859282B CN112859282B CN202110220771.1A CN202110220771A CN112859282B CN 112859282 B CN112859282 B CN 112859282B CN 202110220771 A CN202110220771 A CN 202110220771A CN 112859282 B CN112859282 B CN 112859282B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
- G02B26/0883—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements the refracting element being a prism
- G02B26/0891—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements the refracting element being a prism forming an optical wedge
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/108—Scanning systems having one or more prisms as scanning elements
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Abstract
The invention relates to a double-optical-wedge device of an optical system and a zero-position adjusting method thereof, wherein the device comprises a first optical wedge component and a second optical wedge component, and comprises 4 optical wedge lenses in total, after the 4 optical wedge lenses are installed, two close lens surfaces of the first optical wedge lens and the second optical wedge lens form a certain included angle with an optical axis, and two far lens surfaces are vertical to the optical axis; two close mirror surfaces of the third optical wedge lens and the fourth optical wedge lens form a certain included angle with the optical axis, and two far mirror surfaces are vertical to the optical axis; two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces; the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens are overlapped. After the zero adjustment of the double-optical-wedge device of the optical system, larger field coverage under the determined optical caliber can be realized.
Description
Technical Field
The invention relates to an optical system double-optical-wedge device and a zero-position adjusting method thereof, belonging to the technical field of optical machine adjusting.
Background
The optical wedge is an optical component used for changing the direction of emergent rays in an infrared imaging optical system, and the position of an optical axis is changed by rotating the double optical wedges and controlling the relative angle of the two optical wedges, so that the object space view field can be rapidly scanned in a large range.
The existing optical wedge optics generally only have two optical wedge lenses. Under the condition that the optical clear aperture of an optical system consisting of two optical wedge lenses has requirements, the angle range of optical field scanning is limited by the aperture, and the requirement of large field scanning cannot be met.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, and the optical system double-optical-wedge device and the zero position adjusting method thereof are provided.
The technical scheme for solving the technical problem is as follows: an optical system dual wedge device comprising a first wedge assembly and a second wedge assembly;
the first optical wedge component comprises a first optical wedge lens, a second optical wedge lens, a first lens base and a second lens base; the first optical wedge lens is fixedly arranged on the first lens base, the second wedge lens is fixedly arranged on the second lens base, and the first lens base and the second lens base are combined and arranged together; after the optical wedge device is installed, two mirror surfaces close to the first optical wedge lens and the second optical wedge lens form a certain included angle with an optical axis, and two mirror surfaces far away from the first optical wedge lens and the second optical wedge lens are perpendicular to the optical axis;
the second optical wedge component comprises a third optical wedge lens, a fourth optical wedge lens, a third lens base and a fourth lens base; the third optical wedge lens is fixedly arranged on the third lens base, and the fourth wedge lens is fixedly arranged on the fourth lens base; the third lens base and the fourth lens base are assembled together; after installation, two mirror surfaces close to the third optical wedge lens and the fourth optical wedge lens form a certain included angle with an optical axis, and two mirror surfaces far away from the third optical wedge lens and the fourth optical wedge lens are perpendicular to the optical axis;
the third lens base and the second lens base are assembled together; after installation, two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces; the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens are overlapped.
The first optical wedge lens is fixed on the first lens base in a glue pouring mode; the second optical wedge lens is fixed on the second lens base in a glue pouring mode.
The third optical wedge lens is fixed on the third lens base in a glue pouring mode; and the fourth optical wedge lens is fixed on the fourth lens base in a glue pouring mode.
The coaxial precision of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens is superior to 0.015mm.
The invention provides another technical solution that: the zero position adjusting method of the optical system double-optical-wedge device comprises the following steps:
s1, a first optical wedge lens is fixed to a first lens base in an encapsulating mode, and a second optical wedge lens is fixed to a second lens base in an encapsulating mode; combining the first lens base and the second lens base to enable two lens surfaces, close to each other, of the first optical wedge lens and the second optical wedge lens to form a certain included angle with an optical axis, and enabling two lens surfaces, far away from each other, of the first optical wedge lens and the second optical wedge lens to be perpendicular to the optical axis;
s2, rotating the relative angle of the first lens base and the second lens base by using a double-optical-wedge centering adjustment method, adjusting the relative zero positions of the first optical wedge lens and the second optical wedge lens to enable the main sections of the first optical wedge lens and the second optical wedge lens to be overlapped, and pouring glue to fix the first lens base and the second lens base to complete zero position adjustment of the first optical wedge assembly;
s3: the third optical wedge lens is fixed on the third lens base in an encapsulating way, and the fourth optical wedge lens is fixed on the fourth lens base in an encapsulating way; combining a third lens base and a fourth lens base to enable two lens surfaces, close to each other, of the third optical wedge lens and the fourth optical wedge lens to form a certain included angle with an optical axis, and enabling two lens surfaces, far away from each other, of the third optical wedge lens and the fourth optical wedge lens to be perpendicular to the optical axis;
s4: rotating the relative angle of the third lens base and the fourth lens base by using a double-optical-wedge centering adjustment method, adjusting the relative zero positions of the third optical-wedge lens and the fourth optical-wedge lens to enable the main sections of the third optical-wedge lens and the fourth optical-wedge lens to be superposed, and pouring glue to fix the third lens base and the fourth lens base to complete zero position adjustment of the second optical-wedge assembly;
s5, assembling and installing the second microscope base and the third microscope base together; after installation, two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces;
s5: and rotating the relative angle of the first optical wedge component and the second optical wedge component by using a double-optical-wedge centering adjustment method, and adjusting the relative zero positions of the first optical wedge component and the second optical wedge component to ensure that the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens are superposed to finish zero position adjustment of the double-optical-wedge optical system.
Compared with the prior art, the invention has the beneficial effects that:
(1) Compared with an optical system method consisting of two optical wedge lenses in the prior art, the optical system method realizes a larger optical field scanning angle range on the premise of the same optical caliber because four optical wedge lenses are adopted.
(2) The optical system double-optical-wedge device is simple in structure, and the zero position adjusting method is convenient and easy to realize.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a dual optical wedge imaging system according to an embodiment of the present invention;
fig. 2 is a structural diagram of a zero calibration device of a dual-optical-wedge optical system according to an embodiment of the present invention.
Detailed Description
The following detailed description describes embodiments of the invention, which are exemplary and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The optical wedge is an optical component used for changing the direction of emergent rays in an infrared imaging optical system, and the position of an optical axis is changed by rotating the double optical wedges and controlling the relative angle of two optical wedge lenses, so that the object space view field is rapidly scanned in a large range.
An air space is arranged between two optical wedge lenses, so that adjacent working surfaces are parallel and can rotate relatively around the common normal line of the working surfaces, theoretically, when the main sections of the two optical wedges are overlapped, and the two wedge angles face one direction, the maximum total deviation angle (the sum of the deviation angles generated by the two optical wedges) is generated, and when the relative rotation angle of the two optical wedges is 180 degrees, the two main sections are still overlapped, but the wedge angle directions are opposite, obviously, the combined double optical wedge is equivalent to a parallel flat plate, and the deviation angle is zero. If the angle range of optical field scanning is to be increased, only the number of wedge lenses can be increased.
As shown in fig. 1, the present invention provides an optical system dual wedge device. The apparatus includes a first optical wedge assembly and a second optical wedge assembly;
the first optical wedge component comprises a first optical wedge lens, a second optical wedge lens, a first lens base and a second lens base; the first optical wedge lens is fixedly arranged on the first lens base, the second wedge lens is fixedly arranged on the second lens base, and the first lens base and the second lens base are combined and arranged together; after the optical wedge device is installed, two mirror surfaces close to the first optical wedge lens and the second optical wedge lens form a certain included angle with an optical axis, and two mirror surfaces far away from the first optical wedge lens and the second optical wedge lens are perpendicular to the optical axis;
the second optical wedge component comprises a third optical wedge lens, a fourth optical wedge lens, a third lens base and a fourth lens base; the third optical wedge lens is fixedly arranged on the third lens base, and the fourth wedge lens is fixedly arranged on the fourth lens base; the third lens base and the fourth lens base are assembled together; after the optical wedge device is installed, two mirror surfaces close to the third optical wedge lens and the fourth optical wedge lens form a certain included angle with an optical axis, and two mirror surfaces far away from the third optical wedge lens and the fourth optical wedge lens are perpendicular to the optical axis;
the third lens base and the second lens base are assembled together; after installation, two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces; the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens are overlapped.
The first optical wedge lens is fixed on the first lens base in a glue pouring mode; the second optical wedge lens is fixed on the second lens base in a glue pouring mode.
The third optical wedge lens is fixed on the third lens base in a glue pouring mode; and the fourth optical wedge lens is fixed on the fourth lens base in a glue pouring mode.
The distance processing precision between the first optical wedge lens and the second optical wedge lens, between the second optical wedge lens and the third optical wedge lens, and between the third optical wedge lens and the fourth optical wedge lens is 0.015-0.025 mm.
The coaxial precision of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens is superior to 0.015mm.
The optical wedge optical system designed by the invention adopts four optical wedge lenses in order to enlarge the angle range of optical field scanning. The other technical scheme provided by the invention is that the zero position adjusting method of the optical system double-optical-wedge device provides an adjusting means for a double-optical-wedge lens of 4 optical-wedge lenses in the adjusting process, realizes the controllability and adjustability of the double-optical-wedge adjusting process, and ensures that the optical axis can be adjusted to the zero position after the double-optical-wedge adjusting is finished. The method comprises the following steps:
s1, a first optical wedge lens is fixed to a first lens base in an encapsulating mode, and a second optical wedge lens is fixed to a second lens base in an encapsulating mode; combining the first lens base and the second lens base to enable two lens surfaces, close to each other, of the first optical wedge lens and the second optical wedge lens to form a certain included angle with an optical axis, and enabling two lens surfaces, far away from each other, of the first optical wedge lens and the second optical wedge lens to be perpendicular to the optical axis;
s2, rotating the relative angle of the first lens base and the second lens base by using a double-optical-wedge centering adjustment method, adjusting the relative zero positions of the first optical wedge lens and the second optical wedge lens to enable the main sections of the first optical wedge lens and the second optical wedge lens to be overlapped, and pouring glue to fix the first lens base and the second lens base to complete zero position adjustment of the first optical wedge assembly;
s3: the third optical wedge lens is fixed on the third lens base in an encapsulating way, and the fourth optical wedge lens is fixed on the fourth lens base in an encapsulating way; combining a third lens base and a fourth lens base to enable two lens surfaces, close to each other, of the third optical wedge lens and the fourth optical wedge lens to form a certain included angle with an optical axis, and enabling two lens surfaces, far away from each other, of the third optical wedge lens and the fourth optical wedge lens to be perpendicular to the optical axis;
s4: rotating the relative angle of the third lens base and the fourth lens base by using a double-optical-wedge centering adjustment method, adjusting the relative zero positions of the third optical-wedge lens and the fourth optical-wedge lens to enable the main sections of the third optical-wedge lens and the fourth optical-wedge lens to be superposed, and pouring glue to fix the third lens base and the fourth lens base to complete zero position adjustment of the second optical-wedge assembly;
s5, assembling and installing the second microscope base and the third microscope base together; after installation, two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces;
s5: and rotating the relative angle of the first optical wedge component and the second optical wedge component by using a double-optical-wedge centering adjustment method, and adjusting the relative zero positions of the first optical wedge component and the second optical wedge component to ensure that the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens are superposed to finish zero position adjustment of the double-optical-wedge optical system.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (2)
1. A zero position adjusting method for an optical system double-optical-wedge device comprises a first optical-wedge assembly and a second optical-wedge assembly; the first optical wedge component comprises a first optical wedge lens, a second optical wedge lens, a first lens base and a second lens base; the first optical wedge lens is fixedly arranged on the first lens base, the second wedge lens is fixedly arranged on the second lens base, and the first lens base and the second lens base are assembled together; after the optical wedge device is installed, two mirror surfaces close to the first optical wedge lens and the second optical wedge lens form a certain included angle with an optical axis, and two mirror surfaces far away from the first optical wedge lens and the second optical wedge lens are perpendicular to the optical axis; the second optical wedge component comprises a third optical wedge lens, a fourth optical wedge lens, a third lens base and a fourth lens base; the third optical wedge lens is fixedly arranged on the third lens base, and the fourth wedge lens is fixedly arranged on the fourth lens base; the third lens base and the fourth lens base are assembled together; after installation, two mirror surfaces close to the third optical wedge lens and the fourth optical wedge lens form a certain included angle with an optical axis, and two mirror surfaces far away from the third optical wedge lens and the fourth optical wedge lens are perpendicular to the optical axis; the third lens base and the second lens base are assembled together; after installation, two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces; the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens are superposed, the method is characterized by comprising the following steps:
s1, a first optical wedge lens is fixed to a first lens base in an encapsulating mode, and a second optical wedge lens is fixed to a second lens base in an encapsulating mode; combining the first lens base and the second lens base to enable two lens surfaces, close to each other, of the first optical wedge lens and the second optical wedge lens to form a certain included angle with an optical axis, and enabling two lens surfaces, far away from each other, of the first optical wedge lens and the second optical wedge lens to be perpendicular to the optical axis;
s2, rotating the relative angle of the first lens base and the second lens base, adjusting the relative zero positions of the first optical wedge lens and the second optical wedge lens to enable the main sections of the first optical wedge lens and the second optical wedge lens to be overlapped, and pouring glue and fixing the first lens base and the second lens base to complete zero position adjustment of the first optical wedge assembly;
s3, glue pouring and fixing the third optical wedge lens on the third lens base, and glue pouring and fixing the fourth optical wedge lens on the fourth lens base; combining a third lens base and a fourth lens base to enable two lens surfaces, close to each other, of the third optical wedge lens and the fourth optical wedge lens to form a certain included angle with an optical axis, and enabling two lens surfaces, far away from each other, of the third optical wedge lens and the fourth optical wedge lens to be perpendicular to the optical axis;
s4, rotating the relative angle of the third lens base and the fourth lens base, adjusting the relative zero positions of the third optical wedge lens and the fourth optical wedge lens to enable the main sections of the third optical wedge lens and the fourth optical wedge lens to be overlapped, and pouring glue to fix the third lens base and the fourth lens base to complete zero position adjustment of the second optical wedge assembly;
s5, assembling and installing the second microscope base and the third microscope base together; after installation, two mirror surfaces of the second optical wedge lens and the third optical wedge lens which are close to each other are vertical to the optical axis, and a certain gap is kept between the two mirror surfaces;
s6, rotating the relative angle of the first optical wedge assembly and the second optical wedge assembly, and adjusting the relative zero positions of the first optical wedge assembly and the second optical wedge assembly to enable the main sections of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens to be superposed, so that zero position adjustment of the dual-optical-wedge optical system is completed;
the coaxial precision of the first optical wedge lens, the second optical wedge lens, the third optical wedge lens and the fourth optical wedge lens is superior to 0.015mm.
2. The method for zero adjustment of dual-wedge device in optical system according to claim 1, wherein said steps S2, S4 and S5 apply dual-wedge centering adjustment method for zero adjustment.
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| CN107703600A (en) * | 2017-11-14 | 2018-02-16 | 长春理工大学 | The coaxiality adjusting method and device of gyroaxis and optical axis based on double wedges |
| CN108008541A (en) * | 2017-10-25 | 2018-05-08 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of method of the double wedges of adjustment |
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| US6208465B1 (en) * | 1997-04-25 | 2001-03-27 | Galore Scantec Ltd. | Method and apparatus for imaging an object by diffractive autofocus |
| JP2004311818A (en) * | 2003-04-09 | 2004-11-04 | Koshin Kogaku Kogyo Kk | Optical length variable device and laser device |
| US7321114B2 (en) * | 2005-03-10 | 2008-01-22 | Hitachi Via Mechanics, Ltd. | Apparatus and method for beam drift compensation |
| EP1986032A1 (en) * | 2007-04-25 | 2008-10-29 | Saab Ab | Optical scanner |
| JP2009139692A (en) * | 2007-12-07 | 2009-06-25 | Mitsubishi Electric Corp | Laser beam scanner and optical antenna device |
| JP5466528B2 (en) * | 2010-02-16 | 2014-04-09 | エイチアールディー株式会社 | Beam rotator |
| CN103091836B (en) * | 2012-12-26 | 2015-02-25 | 中科中涵激光设备（福建）股份有限公司 | Optical scanning head drive control system based on hollow encoder and phase difference |
| CN106501914B (en) * | 2016-12-13 | 2018-11-16 | 中国航空工业集团公司洛阳电光设备研究所 | Double wedges centering Method of Adjustment |
| CN111123991B (en) * | 2019-12-04 | 2023-05-12 | 上海航天控制技术研究所 | Optical axis control method based on double-optical wedge infrared imaging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108008541A (en) * | 2017-10-25 | 2018-05-08 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of method of the double wedges of adjustment |
| CN107703600A (en) * | 2017-11-14 | 2018-02-16 | 长春理工大学 | The coaxiality adjusting method and device of gyroaxis and optical axis based on double wedges |
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