CN202735577U - Mini type day and night dual-use zoom lens - Google Patents
Mini type day and night dual-use zoom lens Download PDFInfo
- Publication number
- CN202735577U CN202735577U CN201220387946.4U CN201220387946U CN202735577U CN 202735577 U CN202735577 U CN 202735577U CN 201220387946 U CN201220387946 U CN 201220387946U CN 202735577 U CN202735577 U CN 202735577U
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- main cylinder
- eyeglass
- microscope base
- lens
- concave
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- 239000011521 glass Substances 0.000 claims description 7
- 239000000571 coke Substances 0.000 claims description 4
- 229920002799 BoPET Polymers 0.000 claims description 3
- 239000005041 Mylar™ Substances 0.000 claims description 3
- 239000005308 flint glass Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000003384 imaging method Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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Abstract
The utility model discloses a mini type day and night dual-use zoom lens, comprising a main cylinder, a front lens base, and a rear lens base; wherein the front lens base is arranged on an inner surface of a front part of the main cylinder and is capable of performing axial movement relative to the front part of the main cylinder, the rear lens base is arranged on an inner surface of a rear part of the main cylinder and is capable of performing axial movement relative to the rear part of the main cylinder, an inner surface of the main cylinder between the front lens base and the rear lens base is provided with a diaphragm; a front lens group with a negative focal power is fixed on the front lens base, a rear lens group with a positive focal power is fixed on the rear lens base; the front lens group comprises a convex-concave first lens, a biconcave second lens and a convex-plane third lens successively along a light incident direction; the rear lens group comprises a biconvex fourth lens, a biconvex fifth lens, a biconcave sixth lens, a plane-convex seventh lens, and a convex-plane eighth lens successively along a light incident direction. The mini type day and night dual-use zoom lens of the utility model has the advantages of compact structure, quick and accurate focusing and zooming, capacity for simultaneously adapting to monitoring and shooting of a visible light and an infrared light, and capacity for maintaining clear and stable imaging.
Description
Technical field
The utility model relates to the zoom lens of the usefulness of making a video recording, but especially a kind of zoom lens of mini day and night.
Background technology
In the monitoring technique field, a lot of occasions need to be carried out 24 hours monitoring cameras of whole day, because be visible light wave range daytime, be infrared band evening, and the existing most of zoom monitoring cameras that match with video camera are by day in the situation, although its image quality can reach requirement, but in the situation of monitoring, image blur, the poor problem of image quality will occur at night, namely occur " defocusing phenomenon ".
In addition, because the variation in monitoring place, more small-sized video camera need to be used in some place, and have the general diameter of zoom lens now greater than φ 35mm, and optical texture length is greater than 55mm, and whole camera lens volume is larger, be difficult to match with the small-sized image pickup device, use is restricted.
The utility model content
But the technical problems to be solved in the utility model provides a kind of zoom lens of mini day and night, and structure is small and exquisite, focusing and zooming quick and precisely, but the monitoring camera of simultaneous adaptation visible light and infrared light is held in the steady and audible of picture.
For achieving the above object, the technical solution of the utility model is: but a kind of zoom lens of mini day and night, comprise main cylinder, front microscope base, rear microscope base, front microscope base is contained on the anterior inside surface of main cylinder, front focusing ring is housed on the outside surface of main cylinder front portion can axially move with respect to a main cylinder front portion front microscope base, rear microscope base is contained on the inside surface at main cylinder rear portion, the back focusing ring is housed on the outside surface at main cylinder rear portion can axially move with respect to main cylinder rear portion rear microscope base, on the main tube inner surface between front microscope base and the rear microscope base diaphragm is housed, be fixed with the front lens group of negative power on the front microscope base, be fixed with the rear mirror group of positive light coke on the rear microscope base, described front lens group is followed successively by convex-concave the first eyeglass along entering light direction, concave-concave the second eyeglass and convex flat prismatic glasses; Described rear mirror group is followed successively by biconvex the 4th eyeglass, biconvex the 5th eyeglass, concave-concave the 6th eyeglass, plano-convex the 7th eyeglass and convex flat the 8th eyeglass along entering light direction.
Further improve, described concave-concave the second eyeglass and convex flat prismatic glasses are the gummed eyeglass, and described biconvex the 5th eyeglass and concave-concave the 6th eyeglass are the gummed eyeglass; Can be used on the aberration of control optical system.
Preferred described biconvex the 4th eyeglass is the flint glass eyeglass; Can effectively lower the rear group of focal power amount of bearing, lower the senior aberration of system, promote the resolution of imaging system.
Further improve, the front portion of described main cylinder is evenly equipped with three oblique guide grooves, the rear portion of described main cylinder also is evenly equipped with three oblique guide grooves, front microscope base outside surface is fixed with three guide pins and matches with three oblique guide grooves of main cylinder front portion respectively, and rear microscope base outside surface also is fixed with three guide pins and matches with three oblique guide grooves at main cylinder rear portion respectively; When making camera lens carry out zoom, focusing action, more reliable and more stable.
It is identical that three oblique guide grooves at three oblique guide grooves that described main cylinder is anterior and rear portion and main axis angle are preferably 120 ° and vergence direction.The one, so that the structure of lens design popular M12x0.5mm on can satisfying the market; The 2nd, main cylinder adds man-hour, can machine by a cutter, when effectively eliminating machining, because the coaxiality deviation that tool changing causes.
The thickness of preferred described front focusing ring and back focusing ring is 1.5mm; Effectively the radical length of reduction camera lens dwindles the camera lens volume.
Preferred described diaphragm is the mylar film of 0.05mm, and fixes with snap ring; Can further dwindle the axial length of camera lens.
Further improve, the front end inside surface lock of described front microscope base has front trim ring, and front trim ring front end inside surface is provided with chamfering, and the front end outside surface of front microscope base is provided with chamfering; The size ﹥ 0.5mm of the front end outside surface chamfering of preferred described front microscope base * 45 ° can further dwindle the volume of imaging system, so that camera lens can be applicable in the more small-sized ball-shaped camera; Preferred described front trim ring front end inside surface chamfering is of a size of 0.5mm * 45 °, and its angle approaches with the incident angle of design light, effectively reduces invalid light and enters imaging system, and can effectively dwindle the volume of this imaging system.
Further improve, be respectively equipped with trip bolt on described front focusing ring and the back focusing ring, convenient fixedly front lens group and rear mirror group, the pitch of preferred described trip bolt is 0.35mm.
The utility model is owing to be fixed with the front lens group of negative power on the front microscope base, be fixed with the rear mirror group of positive light coke on the rear microscope base, on the main tube inner surface between front microscope base and the rear microscope base diaphragm is housed, front lens group is provided with convex-concave the first eyeglass, concave-concave the second eyeglass and convex flat prismatic glasses successively along entering light direction, and rear mirror group is provided with biconvex the 4th eyeglass, biconvex the 5th eyeglass, concave-concave the 6th eyeglass, plano-convex the 7th eyeglass and convex flat the 8th eyeglass successively along entering light direction; Front lens group and rear mirror group can be adjusted separately with respect to the distance of diaphragm simultaneously, this optical texture, and by rational parameter designing, just can be at visible light wave range and infrared band while aberration correction, no matter be day or night just can be held in the steady and audible of picture.
On the other hand, because front lens group and rear mirror group adopt after first three two group linkage type structures of five, effectively shorten the structure length of whole camera lens, so that the structure of camera lens is smaller and more exquisite, conveniently match with miniature camera, the while focusing and zooming quick and precisely.
Description of drawings
Fig. 1 is the structure cut-open view that the utility model focal length is in short status;
Fig. 2 is the structure cut-open view that the utility model focal length is in long status.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the utility model is described in further detail.
Fig. 1, shown in Figure 2, but a kind of zoom lens of mini day and night, comprise main cylinder 1, front microscope base 2, rear microscope base 3, front microscope base 2 is contained on the inside surface of main cylinder 1 front portion, on the outside surface of main cylinder 1 front portion front focusing ring 4 is housed, focusing ring 4 can make front microscope base 2 axially move with respect to main cylinder 1 front portion before the rotation, rear microscope base 3 is contained on the inside surface at main cylinder 1 rear portion, on the outside surface at main cylinder 1 rear portion back focusing ring 5 is housed, rotation back focusing ring 5 can make rear microscope base 3 axially move with respect to main cylinder 1 rear portion, on main cylinder 1 inside surface between front microscope base 2 and the rear microscope base 3 diaphragm 6 is housed, described diaphragm 6 can be selected the mylar film of 0.05mm, and fixing with the snap ring 61 that is stuck on main cylinder 1 inside surface;
Be fixed with the front lens group 7 of negative power on the front microscope base 2, described front lens group 7 is followed successively by convex-concave the first eyeglass 71, concave-concave the second eyeglass 72 and convex flat prismatic glasses 73 along entering light direction; Described concave-concave the second eyeglass 72 and convex flat prismatic glasses 73 are preferably the gummed eyeglass;
Be fixed with the rear mirror group 8 of positive light coke on the rear microscope base 3, described rear mirror group 8 is followed successively by biconvex the 4th eyeglass 81, biconvex the 5th eyeglass 82, concave-concave the 6th eyeglass 83, plano-convex the 7th eyeglass 84 and convex flat the 8th eyeglass 85 along entering light direction; Described biconvex the 5th eyeglass 82 and concave-concave the 6th eyeglass 83 are preferably the gummed eyeglass; Described biconvex the 4th eyeglass 81 preferred flint glass eyeglasses that adopt.
Front portion at main cylinder 1 is evenly equipped with three oblique guide grooves, rear portion at main cylinder 1 also is evenly equipped with three oblique guide grooves, front microscope base 2 outside surfaces are fixed with three guide pins 21 and match with three oblique guide grooves of main cylinder 1 front portion respectively, and rear microscope base 3 outside surfaces also are fixed with three guide pins 31 and match with three oblique guide grooves at main cylinder 1 rear portion respectively.
Three oblique guide grooves of described main cylinder 1 front portion and three oblique guide grooves at rear portion are that 120 ° and vergence direction are identical with the axis angle of main cylinder 1 preferably.
The thickness of described front focusing ring 4 and back focusing ring 5 is preferably 1.5mm.
Trim ring 22 before the front end inside surface lock of front microscope base 2 has, front trim ring 22 front end inside surfaces are provided with chamfering 221, and the front end outside surface of front microscope base 2 is provided with chamfering 201.
The preferred ﹥ 0.5mm of size of the front end outside surface chamfering 201 of described front microscope base 2 * 45 °, described front trim ring 22 front end inside surface chamferings 221 are preferably dimensioned to be 0.5mm * 45 °.
On front focusing ring 4 and back focusing ring 5 trip bolt 41,51 is housed respectively, described trip bolt 41,51 pitch are preferably 0.35mm.
Fig. 1 further shows, front lens group 7 and rear mirror group 8 apart from diaphragm 6 farthest, this moment, the focal length of camera lens was the shortest; Fig. 2 shows that further front lens group 7 and rear mirror group 8 are nearest apart from diaphragm 6, and this moment, the focal length of camera lens was the longest; The focal length of present embodiment can be adjusted in the f3-6mm scope.
Other major parameter of present embodiment is: relative aperture: D/f '=1/2.2-1/3.3, and field angle 2W:128 °--64 ° (as square linear field 2 η 〉=φ 6.5mm); Optical texture length: Σ L≤27.75mm; Applicable spectral range: 480nm-850nm; The focal length of front lens group can be-6.8mm, and the focal length of rear mirror group can be 6.83mm.
Below only be preferred embodiment of the utility model, the change that those skilled in the art does to be equal to by claim all falls into the protection domain of this case.
Claims (10)
1. but the zoom lens of a mini day and night, comprise main cylinder, front microscope base, rear microscope base, front microscope base is contained on the anterior inside surface of main cylinder, front focusing ring is housed on the outside surface of main cylinder front portion can axially move with respect to a main cylinder front portion front microscope base, rear microscope base is contained on the inside surface at main cylinder rear portion, the back focusing ring is housed on the outside surface at main cylinder rear portion can axially move with respect to main cylinder rear portion rear microscope base, on the main tube inner surface between front microscope base and the rear microscope base diaphragm is housed, be fixed with the front lens group of negative power on the front microscope base, be fixed with the rear mirror group of positive light coke on the rear microscope base, it is characterized in that: described front lens group is followed successively by convex-concave the first eyeglass along entering light direction, concave-concave the second eyeglass and convex flat prismatic glasses; Described rear mirror group is followed successively by biconvex the 4th eyeglass, biconvex the 5th eyeglass, concave-concave the 6th eyeglass, plano-convex the 7th eyeglass and convex flat the 8th eyeglass along entering light direction.
2. but the zoom lens of a kind of mini day and night according to claim 1 is characterized in that: described concave-concave the second eyeglass and convex flat prismatic glasses are the gummed eyeglass, and described biconvex the 5th eyeglass and concave-concave the 6th eyeglass are the gummed eyeglass.
3. but the zoom lens of a kind of mini day and night according to claim 1, it is characterized in that: described biconvex the 4th eyeglass is the flint glass eyeglass.
4. but the zoom lens of a kind of mini day and night according to claim 1, it is characterized in that: the front portion of described main cylinder is evenly equipped with three oblique guide grooves, the rear portion of described main cylinder also is evenly equipped with three oblique guide grooves, front microscope base outside surface is fixed with three guide pins and matches with three oblique guide grooves of main cylinder front portion respectively, and rear microscope base outside surface also is fixed with three guide pins and matches with three oblique guide grooves at main cylinder rear portion respectively.
5. but the zoom lens of a kind of mini day and night according to claim 4 is characterized in that: three oblique guide grooves at three oblique guide grooves that described main cylinder is anterior and rear portion and main axis angle are that 120 ° and vergence direction are identical.
6. but the zoom lens of a kind of mini day and night according to claim 1, it is characterized in that: the thickness of described front focusing ring and back focusing ring is 1.5mm.
7. but the zoom lens of a kind of mini day and night according to claim 1, it is characterized in that: described diaphragm is the mylar film of 0.05mm, and fixes with snap ring.
8. but the zoom lens of a kind of mini day and night according to claim 1 is characterized in that: the front end inside surface lock of described front microscope base has front trim ring, and front trim ring front end inside surface is provided with chamfering, and the front end outside surface of front microscope base is provided with chamfering.
9. but the zoom lens of a kind of mini day and night according to claim 8 is characterized in that: the size ﹥ 0.5mm of the front end outside surface chamfering of described front microscope base * 45 °, described front trim ring front end inside surface chamfering is of a size of 0.5mm * 45 °.
10. but according to claim 1 to the zoom lens of 9 each described a kind of mini day and nights, it is characterized in that: be respectively equipped with trip bolt on described front focusing ring and the back focusing ring, the pitch of described trip bolt is 0.35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220387946.4U CN202735577U (en) | 2012-08-07 | 2012-08-07 | Mini type day and night dual-use zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220387946.4U CN202735577U (en) | 2012-08-07 | 2012-08-07 | Mini type day and night dual-use zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202735577U true CN202735577U (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220387946.4U Expired - Lifetime CN202735577U (en) | 2012-08-07 | 2012-08-07 | Mini type day and night dual-use zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202735577U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926682A (en) * | 2014-04-08 | 2014-07-16 | 福建福光数码科技有限公司 | High-precision electric-zooming-focusing three-million-pixel camera lens allowed to be used in day and night |
| CN104360467A (en) * | 2014-11-29 | 2015-02-18 | 福建福光数码科技有限公司 | Large-target-surface high-precision mold high-definition zooming monitoring lens |
| CN106772947A (en) * | 2017-01-22 | 2017-05-31 | 东莞市宇瞳光学科技股份有限公司 | Big motion DV camera lenses of practising physiognomy |
| TWI761059B (en) * | 2021-02-03 | 2022-04-11 | 大陸商廣州立景創新科技有限公司 | Zoom lens module |
-
2012
- 2012-08-07 CN CN201220387946.4U patent/CN202735577U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926682A (en) * | 2014-04-08 | 2014-07-16 | 福建福光数码科技有限公司 | High-precision electric-zooming-focusing three-million-pixel camera lens allowed to be used in day and night |
| CN104360467A (en) * | 2014-11-29 | 2015-02-18 | 福建福光数码科技有限公司 | Large-target-surface high-precision mold high-definition zooming monitoring lens |
| CN104360467B (en) * | 2014-11-29 | 2016-09-21 | 福建福光股份有限公司 | Big target surface high-precision mold high definition zoom monitoring camera |
| CN106772947A (en) * | 2017-01-22 | 2017-05-31 | 东莞市宇瞳光学科技股份有限公司 | Big motion DV camera lenses of practising physiognomy |
| TWI761059B (en) * | 2021-02-03 | 2022-04-11 | 大陸商廣州立景創新科技有限公司 | Zoom lens module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361000 26 Xinmei Road, Xinyang Industrial Zone, Haicang, Xiamen, Fujian Patentee after: XIAMEN LEADING OPTICS Co.,Ltd. Address before: 361000 26 Xinmei Road, Xinyang Industrial Zone, Haicang, Xiamen, Fujian Patentee before: XIAMEN LEADING OPTICS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |