CN205643814U - High resolution , dual -purpose tight shot of low distortion day night - Google Patents
High resolution , dual -purpose tight shot of low distortion day night Download PDFInfo
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- CN205643814U CN205643814U CN201620242653.5U CN201620242653U CN205643814U CN 205643814 U CN205643814 U CN 205643814U CN 201620242653 U CN201620242653 U CN 201620242653U CN 205643814 U CN205643814 U CN 205643814U
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Abstract
The utility model discloses a high resolution, dual -purpose tight shot of low distortion day night, fix the subassembly including lens, diaphragm and lens, lens quantity is five, constitutes to go into pupil group and play pupil group respectively, goes into the pupil histotope and goes into the pupil side in the diaphragm, and the order sets up convex lens (J1) and concavees lens (J2) in the income pupil group light path direction, going out the pupil histotope and going out the pupil side in the diaphragm, the order sets up convex lens (J3), convex lens (J4) and concavees lens (J5) in the play pupil group light path orientation, and wherein convex lens (J4) and concavees lens (J5) use the fixed veneer lens group that is of its relative corrugated surface veneer, the fixed subassembly of lens includes preceding clamping ring, first spacer ring, second spacer ring and a primary mirror section of thick bamboo, the axial cross section of first spacer ring, second spacer ring is the stairstepping, and its cascaded surface is all towards convex lens (J3) one side. The utility model discloses can realize high resolution, large relative aperture, the confocal technical characteristic of day night.
Description
Technical field
This utility model relates to optical imaging apparatus, especially high-resolution, low distortion day and night tight shot.
Background technology
Web camera is the common equipment in safety-protection system, and camera lens is the main composition part of web camera, lens performance directly affects image quality and visual field, in high-resolution lens designs, promoting relative aperture to promote light-inletting quantity is one of conventional method, but promotes relative aperture, easily causes the senior aberration relevant to relative aperture to increase, how while promoting relative aperture, to eliminate senior aberration as much as possible, be a research direction.
Summary of the invention
The utility model proposes high-resolution, low distortion day and night tight shot, it is possible to achieve high-resolution, object lens of large relative aperture, the most confocal technical characteristic.
This utility model is by the following technical solutions.
High-resolution, low distortion day and night tight shot, described camera lens includes eyeglass, diaphragm and eyeglass fixation kit, described diaphragm is positioned at camera lens light path stage casing, diaphragm light hole is located on camera lens axis, described number of lenses is five, separately constituting entrance pupil group and emergent pupil group, eyeglass is fixed in light path by eyeglass fixation kit；Described entrance pupil group is positioned at diaphragm entrance pupil side, and on entrance pupil group optical path direction, order arranges convex lens (J1) and concavees lens (J2)；Described emergent pupil group is positioned at diaphragm emergent pupil side, and on emergent pupil group optical path direction, order arranges convex lens (J3), convex lens (J4) and concavees lens (J5), and wherein convex lens (J4) is fixed as a cemented doublet group with concavees lens (J5) with its relative male and fomale(M&F) gluing.
Described eyeglass fixation kit includes front trim ring, first spacer ring, second spacer ring and body tube, described front trim ring with body tube to threaded, form accommodating eyeglass, first spacer ring and the containing cavity of the second spacer ring, described first spacer ring is located between entrance pupil group and emergent pupil group, distance between entrance pupil group and emergent pupil group is fixed, described second spacer ring is located between convex lens (J3) and cemented doublet group, distance between convex lens (J3) and cemented doublet group is fixed, described first spacer ring, the axial cross section of the second spacer ring is stepped, its cascaded surface is all towards convex lens (J3) side.
Described eyeglass is all with height refraction, the optical glass material molding of low dispersion.
Described front trim ring end is provided with camera lens fixed arm.
Light path relative aperture F=2.0 that described entrance pupil group, diaphragm and emergent pupil group are formed.
Light path overall length ∑≤20mm that described entrance pupil group, diaphragm and emergent pupil group are formed, optics rear cut-off distance l ' >=7.5mm.
When incident illumination optic spectrum line is at 480nm～850nm, light path focal distance f '=12mm that described entrance pupil group, diaphragm and emergent pupil group are formed.
Light path angle of visual field 2w >=36 ° that described entrance pupil group, diaphragm and emergent pupil group are formed.
Eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2).
Eyeglass (J2) is 5mm with the airspace of eyeglass (J3).
Eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4).
In this utility model, eyeglass is all with height refraction, the optical glass material molding of low dispersion, and on entrance pupil group optical path direction, order arranges convex lens (J1) and concavees lens (J2)；Described emergent pupil group is positioned at diaphragm emergent pupil side, on emergent pupil group optical path direction, order arranges convex lens (J3), convex lens (J4) and concavees lens (J5), eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2), in emergent pupil group, eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4), in optics design, the glass of high refraction contributes to eliminating senior aberration, this utility model uses high refracting glass to eliminate senior aberration, big relative aperture can be realized, emergent pupil group in light channel structure, eyeglass in entrance pupil group compact arrangement as far as possible is to mate with refraction of light path, can eliminate senior aberration high time, the compact overall structure making camera lens is succinct.
In this utility model, on emergent pupil group optical path direction, order arranges convex lens (J3), convex lens (J4) and concavees lens (J5), wherein convex lens (J4) is fixed as a cemented doublet group with concavees lens (J5) with its relative male and fomale(M&F) gluing, this structure is defined achromatism structure by two pieces of thin lenss contacted with each other, when the convex lens in structure from concavees lens respectively by the transparent material molding that Abbe number is different, and make first face in second face of convex lens and concavees lens have identical radius of curvature glued together, by suitably distributing two lens strengths, the chromatism of position of camera lens can be eliminated, promote target lens.
nullIn this utility model，First spacer ring is located between entrance pupil group and emergent pupil group，Distance between entrance pupil group and emergent pupil group is fixed，Described second spacer ring is located between convex lens (J3) and cemented doublet group，Distance between convex lens (J3) and cemented doublet group is fixed，Described first spacer ring、The axial cross section of the second spacer ring is stepped，Its cascaded surface is all towards convex lens (J3) side，Owing to the spacing of entrance pupil group and emergent pupil group is bigger，And cemented doublet group primarily serves achromatism effect，It is thus desirable to veiling glare can be suppressed by these two sections of light path design with halation，This utility model is by using step-like first spacer ring and the second spacer ring，And cascaded surface all towards convex lens (J3) side，This two sections of light paths can be optimized，Preferably eliminate veiling glare and halation，Also ensure that the logical light of eyeglass assembles with optical axis simultaneously.
In this utility model, eyeglass fixation kit includes front trim ring, first spacer ring, second spacer ring and body tube, described front trim ring with body tube to threaded, form accommodating eyeglass, first spacer ring and the containing cavity of the second spacer ring, described first spacer ring is located between entrance pupil group and emergent pupil group, distance between entrance pupil group and emergent pupil group is fixed, described second spacer ring is located between convex lens (J3) and cemented doublet group, distance between convex lens (J3) and cemented doublet group is fixed, assembling agent structure is simple, when the first spacer ring, when second spacer ring and body tube are all processed with precision machine tool, eyeglass axiality just can be made easily to reach requirement, all lens light axis are made to keep consistent.
Accompanying drawing explanation
Explanation further details of to this utility model with detailed description of the invention below in conjunction with the accompanying drawings:
Accompanying drawing 1 is the structural representation of camera lens described in the utility model；
Accompanying drawing 2 is camera lens described in the utility model MTF figure under visible light；
Accompanying drawing 3 is the camera lens described in the utility model MTF figure when night infrared light filling；
In figure: trim ring before 1-；2-the first spacer ring；3-the second spacer ring；4-body tube；5-convex lens (J1)；6-concavees lens (J2)；7-convex lens (J3)；8-convex lens (J4)；9-concavees lens (J5)；10-camera lens fixed arm；11-diaphragm.
Detailed description of the invention
As shown in Figure 1, high-resolution, low distortion day and night tight shot, described camera lens includes eyeglass, diaphragm 11 and eyeglass fixation kit, described diaphragm 11 is positioned at camera lens light path stage casing, diaphragm 11 light hole is located on camera lens axis, described number of lenses is five, separately constitutes entrance pupil group and emergent pupil group, and eyeglass is fixed in light path by eyeglass fixation kit；Described entrance pupil group is positioned at diaphragm 11 entrance pupil side, and on entrance pupil group optical path direction, order arranges convex lens (J1) 5 and concavees lens (J2) 6；Described emergent pupil group is positioned at diaphragm 11 emergent pupil side, on emergent pupil group optical path direction, order arranges convex lens (J3) 7, convex lens (J4) 8 and concavees lens (J5) 9, and wherein convex lens (J4) 8 is fixed as a cemented doublet group with concavees lens (J5) 9 with its relative male and fomale(M&F) gluing.
Described eyeglass fixation kit includes front trim ring 1, first spacer ring 2, second spacer ring 3 and body tube 4, described front trim ring 1 with body tube 4 to threaded, form accommodating eyeglass, first spacer ring 2 and the containing cavity of the second spacer ring 3, described first spacer ring 2 is located between entrance pupil group and emergent pupil group, distance between entrance pupil group and emergent pupil group is fixed, described second spacer ring 3 is located between convex lens (J3) 7 and cemented doublet group, distance between convex lens (J3) 3 and cemented doublet group is fixed, described first spacer ring 2, the axial cross section of the second spacer ring 3 is stepped, its cascaded surface is all towards convex lens (J3) 7 side.
Described eyeglass is all with height refraction, the optical glass material molding of low dispersion.
Described front trim ring 1 end is provided with camera lens fixed arm 10.
Light path relative aperture F=2.0 that described entrance pupil group, diaphragm and emergent pupil group are formed.
Light path overall length ∑≤20mm that described entrance pupil group, diaphragm and emergent pupil group are formed, optics rear cut-off distance l ' >=7.5mm.
When incident illumination optic spectrum line is at 480nm～850nm, light path focal distance f '=12mm that described entrance pupil group, diaphragm and emergent pupil group are formed.
Light path angle of visual field 2w >=36 ° that described entrance pupil group, diaphragm and emergent pupil group are formed.
Eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2).
Eyeglass (J2) is 5mm with the airspace of eyeglass (J3).
Eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4).
After assembling, the attainable technical specification of this camera lens is as follows:
Light path relative aperture F=2.0 that entrance pupil group, diaphragm and emergent pupil group are formed, light path angle of visual field 2w >=36 °, light path overall length ∑≤20mm that entrance pupil group, diaphragm and emergent pupil group are formed, optics rear cut-off distance l ' >=7.5mm, when incident illumination optic spectrum line is at 480nm～850nm, light path focal distance f '=12mm that described entrance pupil group, diaphragm and emergent pupil group are formed.
When daylight abundance, this camera lens normally works, and its MTF is as in figure 2 it is shown, when night, and with infrared light filling, its MTF is as it is shown on figure 3, knowable to Fig. 2 and Fig. 3, it is seen that the distance difference in light and infrared light rear lens focus face is the least, real realize the most confocal.Same image planes can meet two kinds of wave band imaging requirements simultaneously, namely can meet the camera lens requirement of day and night video camera.
Claims (8)
1. high-resolution, low distortion day and night tight shot, it is characterized in that: described camera lens includes eyeglass, diaphragm and eyeglass fixation kit, described diaphragm is positioned at camera lens light path stage casing, diaphragm light hole is located on camera lens axis, described number of lenses is five, separately constituting entrance pupil group and emergent pupil group, eyeglass is fixed in light path by eyeglass fixation kit；Described entrance pupil group is positioned at diaphragm entrance pupil side, and on entrance pupil group optical path direction, order arranges convex lens (J1) and concavees lens (J2)；Described emergent pupil group is positioned at diaphragm emergent pupil side, and on emergent pupil group optical path direction, order arranges convex lens (J3), convex lens (J4) and concavees lens (J5), and wherein convex lens (J4) is fixed as a cemented doublet group with concavees lens (J5) with its relative male and fomale(M&F) gluing；
Described eyeglass fixation kit includes front trim ring, first spacer ring, second spacer ring and body tube, described front trim ring with body tube to threaded, form accommodating eyeglass, first spacer ring and the containing cavity of the second spacer ring, described first spacer ring is located between entrance pupil group and emergent pupil group, distance between entrance pupil group and emergent pupil group is fixed, described second spacer ring is located between convex lens (J3) and cemented doublet group, distance between convex lens (J3) and cemented doublet group is fixed, described first spacer ring, the axial cross section of the second spacer ring is stepped, its cascaded surface is all towards convex lens (J3) side.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: described eyeglass is all with height refraction, the optical glass material molding of low dispersion.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: described front trim ring end is provided with camera lens fixed arm.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: light path relative aperture F=2.0 that described entrance pupil group, diaphragm and emergent pupil group are formed.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: light path overall length ∑≤20mm that described entrance pupil group, diaphragm and emergent pupil group are formed, optics rear cut-off distance l ' >=7.5mm.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: when incident illumination optic spectrum line is at 480nm～850nm, light path focal distance f '=12mm that described entrance pupil group, diaphragm and emergent pupil group are formed.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: light path angle of visual field 2w >=36 ° that described entrance pupil group, diaphragm and emergent pupil group are formed.
High-resolution the most according to claim 1, low distortion day and night tight shot, it is characterised in that: eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2)；
Eyeglass (J2) is 5mm with the airspace of eyeglass (J3)；
Eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620242653.5U CN205643814U (en) | 2016-03-28 | 2016-03-28 | High resolution , dual -purpose tight shot of low distortion day night |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620242653.5U CN205643814U (en) | 2016-03-28 | 2016-03-28 | High resolution , dual -purpose tight shot of low distortion day night |
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| Publication Number | Publication Date |
|---|---|
| CN205643814U true CN205643814U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620242653.5U Active CN205643814U (en) | 2016-03-28 | 2016-03-28 | High resolution , dual -purpose tight shot of low distortion day night |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629425A (en) * | 2016-03-28 | 2016-06-01 | 福建福光光电科技有限公司 | High-resolution and low-distortion day-and-night prime lens |
| CN106371194A (en) * | 2016-11-23 | 2017-02-01 | 福建福光股份有限公司 | 6mm high-light-flux and high-definition prime lens for day and night use |
-
2016
- 2016-03-28 CN CN201620242653.5U patent/CN205643814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629425A (en) * | 2016-03-28 | 2016-06-01 | 福建福光光电科技有限公司 | High-resolution and low-distortion day-and-night prime lens |
| CN106371194A (en) * | 2016-11-23 | 2017-02-01 | 福建福光股份有限公司 | 6mm high-light-flux and high-definition prime lens for day and night use |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |