CN101609205B - High-magnifying long-focus zooming camera lens - Google Patents

High-magnifying long-focus zooming camera lens Download PDF

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Publication number
CN101609205B
CN101609205B CN2009103051358A CN200910305135A CN101609205B CN 101609205 B CN101609205 B CN 101609205B CN 2009103051358 A CN2009103051358 A CN 2009103051358A CN 200910305135 A CN200910305135 A CN 200910305135A CN 101609205 B CN101609205 B CN 101609205B
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China
Prior art keywords
focusing
camera lens
airspace
fixing
compensation
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CN2009103051358A
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Chinese (zh)
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CN101609205A (en
Inventor
王颖军
肖维军
林春生
刘辉
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福建福光数码科技有限公司
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Priority to CN2009103051358A priority Critical patent/CN101609205B/en
Publication of CN101609205A publication Critical patent/CN101609205A/en
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Abstract

The invention relates to a high-magnifying long-focus zooming camera lens which is characterized in that an optical path structure is respectively provided with a front fixed group with positive focal power, a zooming group with negative focal power, a compensation group with negative focal power and a rear fixed group with negative focal power along the incident light in the direction from the left to the right; the front fixed group is provided with a double-convex lens and a gluing group separated from the double-convex lens in sequence; the zooming group is provided with a negative meniscus lens and a gluing group separated from the negative meniscus lens in sequence; the compensation group is provided with a negative meniscus lens gluing group and a positive meniscus lens gluing group which are mutually glued; and the front part of the rear fixed group is provided with the double-convex lens and a positive meniscus lens separated from the double-convex lens, the middle part thereof is provided with the gluing group and the positive meniscus lens in sequence and the rear part thereof is provided with a meniscus lens and the double-convex lens separated from the meniscus lens. The high-magnifying long-focus zooming camera lens can improve the optical zoom of the zoom lens, and shorten the length of the optical structure so as to being capable of being installed on a general holder, increasing optical rear intercept and improving the resolution of the lens.

Description

High-magnifying long-focus zooming camera lens

Technical field

The present invention relates to a kind of high-magnifying long-focus zooming camera lens, be applicable to the protection and monitor field industry.

Background technology

Mechanical compensation formula zoom lens have had the history in three, 40 years in the application of protection and monitor field.Traditional light channel structure pattern by preceding fixedly group, become doubly four constituent elements of the fixing group in group, compensation group and back and form, but its ubiquity that the change multiple proportions is low, structure long, optics rear cut-off distance weak point, the not high shortcoming of resolution.

Summary of the invention

The object of the present invention is to provide a kind of high-magnifying long-focus zooming camera lens, its longest focal length is 1000mm, becomes multiple proportions and is 25 times, and its total optical path length is short, can be installed on the universal The Cloud Terrace, and the optics rear cut-off distance is long, the resolution height.

Technical program of the present invention lies in: a kind of high-magnifying long-focus zooming camera lens, it is characterized in that: in its light channel structure along light from left to right direction incident to be respectively equipped with focal power be positive preceding fixedly group, focal power is doubly organized for negative change, focal power is positive back fixedly group for negative compensation group and focal power, before described fixedly group be provided with successively a slice biconvex eyeglass and with it separately by bearing crescent moon and gummed group that the first month of the lunar year, the odontoscope sheet connected airtight, described change doubly organize be provided with successively the negative crescent moon eyeglass of a slice and with it separately by bearing crescent moon and gummed group that the first month of the lunar year, the odontoscope sheet connected airtight, described compensation group is provided with the gummed group of being connected airtight by negative crescent moon and positive crescent moon, the front portion of the fixing group in described back is provided with a slice biconvex eyeglass and separately a slice odontoscope in first month of the lunar year sheet with it, the middle part is provided with the gummed group of being connected airtight by biconvex eyeglass and negative crescent moon eyeglass successively, with along optical path direction and gummed group a slice odontoscope in first month of the lunar year sheet separately, the rear portion is provided with a slice crescent moon eyeglass and separately biconvex eyeglass with it; Along the light incident direction, airspace in the described preceding fixing group between biconvex eyeglass and the gummed group is 10.3mm, airspace during described change is doubly organized between negative crescent moon eyeglass and the gummed group is 13.7mm, airspace between front portion two eyeglasses of the fixing group in described back is 0.2mm, anterior airspace with the middle part is 16.1mm, airspace between the middle part gummed group of the fixing group in described back and the first month of the lunar year odontoscope sheet is 0.5mm, the middle part and the airspace between the rear portion of the fixing group in described back are 32mm, airspace between rear portion two eyeglasses of the fixing group in described back is 1.7mm, airspace before described between fixing group and the change times group is 4.2mm～122.57mm, the airspace that becomes between times group and the compensation group is 106.16 mm～64.31mm, and the airspace between the fixing group in compensation group and back is 80.98mm～4.47mm; The camera lens that is made of above-mentioned lens set reaches following parameter:

1) focal length: , wherein become multiple proportions: 25 times,

2) relative aperture: D/f '=1/4.5～1/8,

3) field angle: ° 20 '～0 ° 27 of 2 ω 〉=11 ', wherein as square linear field 2 η ' 〉=φ 8,

4) optics rear cut-off distance: L ' 〉=50mm,

5) optical texture length: Σ D≤420mm,

6) become times stroke :≤119mm.

The invention has the advantages that: the present invention can improve the zoom lens the change multiple proportions, dwindle optical texture length, it can be installed on the universal The Cloud Terrace, increase the optics rear cut-off distance, improve resolution of lens, thereby effectively increase the monitoring distance, and guaranteed the sharpness of monitoring image.

Description of drawings

Fig. 1 is a light channel structure synoptic diagram of the present invention.

Fig. 2 is an electronic focus adjusting mechanism structural representation of the present invention.

Fig. 3 is a power zoom mechanism structure synoptic diagram of the present invention.

Fig. 4 is a back focusing mechanism structure synoptic diagram of the present invention.

Fig. 5 is a camera lens one-piece construction cut-open view of the present invention.

Wherein: fixing group 2-becomes and doubly organizes the main tube of fixing group 5-motor 2 driving wheel 6-focusing rings 1 7-focusing drawtube 8-camera lens master tube 9-guide pin 2 10-motors, 1 driving wheel 11-cam 12-guide pin, 1 13-slide bar 14-coupling bolt 15-focusing 16-clamp ring 17-focusing ring 2 18-retaining ring 19-focusing mount 20-focusing O type circle 21-connection seat 22-guide pin 3 behind the 3-compensation group 4-before the 1-.

Embodiment

With reference to figure 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the invention provides a kind of high-magnifying long-focus zooming camera lens, it is characterized in that: in its light channel structure along light from left to right direction incident to be respectively equipped with focal power be positive preceding fixedly group 1, focal power doubly organizes 2 for negative change, focal power is positive back fixedly group 4 for negative compensation group 3 and focal power, before described fixing group 1 be provided with successively a slice biconvex eyeglass 1-1 and with it separately by bearing crescent moon 1-2 and gummed group that the first month of the lunar year, odontoscope sheet 1-3 connected airtight, described change is doubly organized 2 and is provided with the negative crescent moon eyeglass 2-1 of a slice successively and with it separately by bearing crescent moon 2-2 and gummed group that the first month of the lunar year, odontoscope sheet 2-3 connected airtight, described compensation group 3 is provided with by negative crescent moon 3-1 and gummed group that the first month of the lunar year, odontoscope sheet 3-2 connected airtight, the front portion of the fixing group 4 in described back is provided with a slice biconvex eyeglass 4-1 and separately a slice odontoscope in first month of the lunar year sheet 4-2 with it, the middle part is provided with the gummed group of being connected airtight by biconvex eyeglass 4-3 and negative crescent moon eyeglass 4-4 successively, with along optical path direction and gummed group a slice odontoscope in first month of the lunar year sheet 4-5 separately, the rear portion is provided with a slice crescent moon eyeglass 4-6 and separately biconvex eyeglass 4-7 with it.

Wherein, along the light incident direction, airspace in the described preceding fixing group between biconvex eyeglass and the gummed group is 10.3mm, airspace during described change is doubly organized between negative crescent moon eyeglass and the gummed group is 13.7mm, airspace between front portion two eyeglasses of the fixing group in described back is 0.2mm, anterior airspace with the middle part is 16.1mm, airspace between the middle part gummed group of the fixing group in described back and the first month of the lunar year odontoscope sheet is 0.5mm, the middle part and the airspace between the rear portion of the fixing group in described back are 32mm, airspace between rear portion two eyeglasses of the fixing group in described back is 1.7mm, airspace before described between fixing group and the change times group is 4.2mm～122.57mm, the airspace that becomes between times group and the compensation group is 106.16 mm～64.31mm, and the airspace between the fixing group in compensation group and back is 80.98mm～4.47mm.

The camera lens that is made of above-mentioned lens set reaches following parameter:

1 focal length: , (change multiple proportions: 25 times),

2 relative apertures: D/f '=1/4.5～1/8,

3 field angle: ° 20 '～0 ° 27 ' (as square linear field 2 η ' 〉=φ 8) of 2 ω 〉=11,

4 optics rear cut-off distance: L ' 〉=50mm,

5 optical texture length: Σ D≤420mm,

6 become times stroke :≤119mm.

The fixing group on 1 focusing drawtube 7 that is installed in the camera lens master tube 8 before described, described focusing drawtube 7 is connected through the internal thread of external thread with focusing ring 6 inwalls, described focusing ring 6 internal threads are connected with the external thread of camera lens master tube 8, the external toothing of described focusing ring 6 and driving gear 5 engagements that are installed in the drive motor rotating shaft on the camera lens master tube 7, and carry out relative camera lens master tube and rotatablely move, guide groove on guide pin 9 and the camera lens master tube 8 makes focusing drawtube 7 change into axially-movable from rotatablely moving, and has constituted the electronic focus adjusting mechanism of fixing group before driving like this.

Described change doubly organize 2 and compensation group 3 through becoming times microscope base, the compensation microscope base is installed in respectively on the front and back end of the slide bar 13 in main tube 8 bodies, described main tube 8 outer walls are provided with a cam 11, the pair of cams groove is arranged on the cam 11, wherein drive and become times cam path of group motion into becoming times cam path, install on the described change times cam path and stir guide pin 12, described guide pin 12 ends are installed in the hole slot that becomes times microscope base relevant position, also install on another cam path and stir guide pin, described guide pin end also is installed in the hole slot of compensation microscope base relevant position, the end face tooth of described upper cam surface be installed in main tube 8 bodies on the drive motor rotating shaft on driving gear 10 be meshed, the rotation of driven by motor cam, cam drives by guide pin and becomes times microscope base, the compensation microscope base, press the position motion of setting, constituted the power zoom mechanism that drives change times group and compensation group like this.

In order to regulate the influence of installation site to camera lens, the present invention is provided with back focusing mechanism, mainly comprise the focusing master tube 15 of fixedlying connected with camera lens master tube rear end portion, described focusing master tube 15 external screw-threads connect focusing ring 17, described focusing ring 17 rear side inwalls are provided with internal thread, focusing mount 19 is provided with the external thread that connects with focusing ring 17, focusing mount 19 is provided with the guide groove that guide pin 22 is installed, described guide pin 22 ends link to each other with the main tube 15 of focusing, in order to change the direction of motion of focusing ring 17, when the rotation focusing ring, by screw drive focusing mount circumferential movement, and guide pin makes focusing mount become rectilinear motion by circumferential movement in the guide groove, regulates thereby make connection seat carry out axial location.

Claims (4)

1. high-magnifying long-focus zooming camera lens, it is characterized in that: in its light channel structure along light from left to right direction incident to be respectively equipped with focal power be positive preceding fixedly group, focal power is doubly organized for negative change, focal power is positive back fixedly group for negative compensation group and focal power, before described fixedly group be provided with successively a slice biconvex eyeglass and with it separately by bearing crescent moon and gummed group that the first month of the lunar year, the odontoscope sheet connected airtight, described change doubly organize be provided with successively the negative crescent moon eyeglass of a slice and with it separately by bearing crescent moon and gummed group that the first month of the lunar year, the odontoscope sheet connected airtight, described compensation group is provided with the gummed group of being connected airtight by negative crescent moon and positive crescent moon, the front portion of the fixing group in described back is provided with a slice biconvex eyeglass and separately a slice odontoscope in first month of the lunar year sheet with it, the middle part is provided with the gummed group of being connected airtight by biconvex eyeglass and negative crescent moon eyeglass successively, with along optical path direction and gummed group a slice odontoscope in first month of the lunar year sheet separately, the rear portion is provided with a slice crescent moon eyeglass and separately biconvex eyeglass with it; Along the light incident direction, airspace in the described preceding fixing group between biconvex eyeglass and the gummed group is 10.3mm, airspace during described change is doubly organized between negative crescent moon eyeglass and the gummed group is 13.7mm, airspace between front portion two eyeglasses of the fixing group in described back is 0.2mm, anterior airspace with the middle part is 16.1mm, airspace between the middle part gummed group of the fixing group in described back and the first month of the lunar year odontoscope sheet is 0.5mm, the middle part and the airspace between the rear portion of the fixing group in described back are 32mm, airspace between rear portion two eyeglasses of the fixing group in described back is 1.7mm, airspace before described between fixing group and the change times group is 4.2mm～122.57mm, the airspace that becomes between times group and the compensation group is 106.16 mm～64.31mm, and the airspace between the fixing group in compensation group and back is 80.98mm～4.47mm; The camera lens that is made of above-mentioned lens set reaches following parameter:
1) focal length: , wherein become multiple proportions: 25 times,
2) relative aperture: D/f '=1/4.5～1/8,
3) field angle: ° 20 '～0 ° 27 of 2 ω 〉=11 ', wherein as square linear field 2 η ' 〉=φ 8,
4) optics rear cut-off distance: L ' 〉=50mm,
5) optical texture length: Σ D≤420mm,
6) become times stroke :≤119mm.
2. high-magnifying long-focus zooming camera lens according to claim 1, it is characterized in that: fixing group is installed on the interior focusing drawtube of camera lens master tube before described, described focusing drawtube is connected through the internal thread of external thread with the focusing ring inwall, described focusing ring internal thread is connected with the external thread of camera lens master tube, the external toothing of described focusing ring and the driving gear engagement that is installed in the drive motor rotating shaft on the camera lens master tube, and carry out relative camera lens master tube and rotatablely move, described camera lens master tube is provided with guide groove, is installed on the described guide groove to be used to make focusing drawtube to change into the guide pin of axially-movable from rotatablely moving.
3. high-magnifying long-focus zooming camera lens according to claim 1, it is characterized in that: described change doubly organize and the compensation group through becoming times microscope base, the compensation microscope base is installed in respectively on the front and back end of the slide bar in the main cylinder, described main drum outer wall is provided with a cam, cam is provided with the pair of cams groove, wherein drive and become times cam path of group motion into becoming times cam path, install on the described change times cam path and stir guide pin, described guide pin end is installed in the hole slot that becomes times microscope base relevant position, also install on another cam path and stir guide pin, described guide pin end also is installed in the hole slot of compensation microscope base relevant position, the end face tooth of described upper cam surface be installed in main cylinder on the drive motor rotating shaft on driving gear be meshed, the rotation of driven by motor cam, cam drive by guide pin and become times microscope base, the compensation microscope base is by the position motion of setting.
4. high-magnifying long-focus zooming camera lens according to claim 1, it is characterized in that: comprise the focusing master tube of fixedlying connected with camera lens master tube rear end portion, described focusing master tube external screw-thread connects focusing ring, described focusing ring rear side inwall is provided with internal thread, focusing mount is provided with the external thread that connects with focusing ring, focusing mount is provided with the guide groove that guide pin is installed, described guide pin end links to each other with the main tube of focusing, in order to change the direction of motion of focusing ring, the rotation focusing ring, by screw drive focusing mount circumferential movement, and guide pin makes focusing mount become rectilinear motion by circumferential movement in the guide groove, regulates thereby make connection seat carry out axial location.
CN2009103051358A 2009-08-03 2009-08-03 High-magnifying long-focus zooming camera lens CN101609205B (en)

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CN101609205B true CN101609205B (en) 2011-02-02

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101930114B (en) * 2010-08-25 2012-09-05 福建福光数码科技有限公司 Varifocal pick-up lens with high resolution and strong fog penetrating function
CN102253472B (en) * 2011-07-22 2013-11-20 福建福光数码科技有限公司 Zooming camera lens matched with 3CCD (Charge-Coupled Device) camera
CN102354078B (en) * 2011-09-28 2014-02-26 福建福光数码科技有限公司 Infrared illuminating, zooming and light-condensing lens
CN103197408B (en) * 2012-11-25 2015-04-29 西南技术物理研究所 Middle-infrared band athermal optical compensation continuous zooming optical system
CN103293162B (en) * 2013-06-17 2015-03-11 浙江大学 Lighting system and method used for dark field detection of defect in spherical optical element surface
CN103336354B (en) * 2013-07-03 2015-06-17 福建福光数码科技有限公司 Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens
CN103364933A (en) * 2013-07-22 2013-10-23 中国科学院西安光学精密机械研究所 Digital cam continuous zooming system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740063A (en) * 1983-09-14 1988-04-26 Asahi Kogaku Kogyo Kabushiki Kaisha Telephoto zoom lens system
CN101178473A (en) * 2006-09-04 2008-05-14 株式会社理光 Zoom lens, image pickup device and information carrying terminal
CN101361014A (en) * 2006-08-04 2009-02-04 卡西欧计算机株式会社 Zoom lens and projector employing zoom lens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740063A (en) * 1983-09-14 1988-04-26 Asahi Kogaku Kogyo Kabushiki Kaisha Telephoto zoom lens system
CN101361014A (en) * 2006-08-04 2009-02-04 卡西欧计算机株式会社 Zoom lens and projector employing zoom lens
CN101178473A (en) * 2006-09-04 2008-05-14 株式会社理光 Zoom lens, image pickup device and information carrying terminal

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Owner name: FUJIAN FORECAM CO., LTD.

Free format text: FORMER NAME: FUJIAN FORECAM DIGITAL TECHNOLOGY CO., LTD.

CP03 Change of name, title or address

Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue

Patentee after: FUJIAN FORECAM CO., LTD.

Address before: 350015, Fuzhou, Fujian Province, Mawei District, No. 39

Patentee before: Fujian Forecam Optics Co., Ltd.