CN105652415A - Rear optical set for star-grade road monitoring zoom camera lens - Google Patents
Rear optical set for star-grade road monitoring zoom camera lens Download PDFInfo
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- CN105652415A CN105652415A CN201610232458.9A CN201610232458A CN105652415A CN 105652415 A CN105652415 A CN 105652415A CN 201610232458 A CN201610232458 A CN 201610232458A CN 105652415 A CN105652415 A CN 105652415A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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Abstract
The invention provides a rear optical set for a star-grade road monitoring zoom camera lens. The rear optical set is characterized by comprising a sixth lens (C6), a seventh lens (C7), an eighth lens (C8), a ninth lens (C9), a tenth lens (C10) and an eleventh lens (C11) in sequence along the light incidence direction. The star-grade road monitoring zoom camera lens, which adopts the rear optical set provided by the invention, adopts an oversized aperture technology and an aperture value reaches F2.0; furthermore, the camera lens adopts a multilayered broad width film plating technology and an ultralow chromatic dispersion optical glass technology so that the light transmission rate is effectively improved, and glaring, ghost image and other phenomena, which easily occur in a common camera lens, are alleviated; and in aspect of appearance, the camera lens is a whole metal body, and the metal shell also has very good compression-resisting and protection effects on the camera lens.
Description
Technical field
The present invention relates to camera lens field, especially a kind of starlight level rear optical group of road monitoring zoom lens.
Background technology
Although traditional infrared benefit light technology can obtain imaging clearly under low illumination, but color can be lost, black white image can only be formed, and by infrared benefit light, the reflective object of this kind of height of car plate was easy to exposure, and to wear color, body color, car plate etc. clothes be all often the crucial clue solved a case, must not lose so the clear colour imaging demand under low illumination gets more and more.
Low-illuminance cameras is the focus product of the monitoring trade released along with semiconductor technology evolves in recent years. Low-illuminance cameras, from literal just it may be seen that refer to the pick up camera that still can obtain when illumination is darker and compare clear image. Front-end camera is divided into four grades by current security protection industry usually: regular grade pick up camera, and general illumination value is all greater than 0.1lux; The pick up camera of illumination value scope between 0.1lux to 0.01lux, is commonly referred to as low-illuminance cameras; And it being called as a moon lighting level pick up camera, its illumination value scope is between 0.01lux to 0.001lux; When minimum illumination value reaches even lower than 0.0001lux time, just reach the ultra-low illumination pick up camera of " starlight level ". Without any secondary light source under starlight environment, it is possible to show coloured image clearly, it is different from common camera and can only show black white image.
Current low-illuminance cameras is widely used in the fields that day and night monitoring requirement is higher such as safe city, army, frontier defense, bank, hospital, motorway.
Summary of the invention
It is an object of the invention to provide a kind of starlight level rear optical group of road monitoring zoom lens, do not need infrared lamp also not need photoflash lamp to realize starlight level road monitoring zoom lens, can realize not trailing evening colored monitoring clearly.
The technical scheme of the present invention is:
A kind of starlight level rear optical group of road monitoring zoom lens, it is characterized in that: described rear optical group comprises the 6th eyeglass, the 7th eyeglass, the 8th eyeglass, the 9th eyeglass, the tenth eyeglass and the 11 eyeglass that arrange successively along light incident direction, wherein the 6th eyeglass, the 9th eyeglass are two convex type lens, tenth eyeglass is single convex type lens, 7th eyeglass is double concave type lens, 8th eyeglass and the 11 eyeglass are crescent lens, the gummed group of the 8th eyeglass and the 9th eyeglass composition contiguity.
The S11 curvature radius of described 6th eyeglass is 39.439mm, S12 curvature radius is-51.155mm, and specific refractory power is 1.945958 �� 50X10-5, abbe number is 17.944 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 12.8 �� 0.02; The S13 curvature radius of the 7th eyeglass is-44.344mm, S14 curvature radius is 26.51mm, and specific refractory power is 1.728250 �� 50X10-5, abbe number is 28.315 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 2 �� 0.02; The S15 curvature radius of the 8th eyeglass is 50.729mm, S16 curvature radius is-21.569mm, and specific refractory power is 1.846670 �� 50X10-5, abbe number is 23.791 �� 0.8%, and effective diameter is 22.4mm, and center of lens thickness D5 is 1.6 �� 0.02; The S7 curvature radius of the 9th eyeglass is 21.569mm, S18 curvature radius is-38.818mm, and specific refractory power is 1.607381 �� 50X10-5, abbe number is 56.657 �� 0.8%, and effective diameter is 23.1mm, and center of lens thickness D5 is 8.2 �� 0.02; The S19 curvature radius of the tenth eyeglass is 25.651mm, S20 curvature radius is infinitely great, and specific refractory power is 1.617203 �� 50X10-5, abbe number is 53.928 �� 0.8%, and effective diameter is 20.4mm, and center of lens thickness D5 is 19.5 �� 0.02; The S21 curvature radius of the 11 eyeglass is 27.959mm, S22 curvature radius is 15.4mm, and specific refractory power is 1.785901 �� 50X10-5, abbe number is 44.207 �� 0.8%, and effective diameter is 18.5mm, and center of lens thickness D5 is 2.1 �� 0.02.
The invention has the beneficial effects as follows:
Adopting the starlight level road monitoring zoom lens of the rear optical group of the present invention to adopt super large aperture technology, aperture value reaches F2.0; In addition, camera lens adopts multilayer broadband coating technique, ED opticglass technology, effectively improves logical light rate, and what alleviate that common lens easily occurs dazzles the phenomenon such as light, ghost; Outward appearance aspect, this kind of camera lens all-metal fuselage, camera lens is also played good resistance to compression, provide protection by metal shell.
In the garden that street lamp is not opened, from the effect comparison of common monitoring camera lens of same time at night and the starlight level road monitoring zoom lens of the present invention. Common monitoring camera lens is forcing the colored rear image obtained can only indistinctly see the profile of trees, road, building, and integrated environment a slice is pitch-dark, has lost the effect of monitoring; And adopt the starlight level road monitoring zoom lens of the rear optical group of the present invention can reduce very clear for the details of road, buildings, even remote vehicle, and overall picture is not significantly made an uproar a little, the color effect exhibits excellent under low photograph.
Adopting the starlight level road monitoring zoom lens of the rear optical group of the present invention to apply maximum scenes is on road monitoring, it is necessary to can see integrated environment clearly, can suppress again vehicular traffic headlight, see car plate clearly. On the one hand low need to allow more light enter pick up camera as far as possible according under scene, but need excessively bright high light to weaken on the other hand, otherwise easy mistake exposes interference imaging effect. Adopting the starlight level road monitoring zoom lens of the rear optical group of the present invention to solve this difficult problem, in actual monitored, car headlight high light is pressed, and it is high-visible that vehicle body details comprises car plate, and periphery road environment is also very clear.
Along with the raising of pixel, colored low more poor according to effect, this is owing to the size of sensor is had requirement by pick up camera, and when dimensional change is little, pixel is more many, and the photosensitive area of unit picture element is more little, thus low more poor according to effect. Current starlight level pick up camera, based on 1080P resolving power, is all based on 1/2 " left and right sensor, and the 300W pick up camera of main flow is all based on 1/3 on the market " sensor, naturally be difficult to night obtain low photograph effect. And the sensor size that the present invention adopts is 2/3 " left and right, low effect of shining is better than prior art naturally, is high resolving power and the combination of starlight level technology, overcomes the low drawback according to weak effect.
Invent and ensure the airspace between each lens by machinery spacer ring, and be provided with delustring screw thread at machinery spacer ring inwall, can effectively eliminate the stray light of camera lens, it is to increase the resolving power of camera lens.
The screw thread design of filter ring front-end port, is convenient to user's optical filtering that increase and decrease is suitable arbitrarily on camera lens, and filter ring has light shield function, it is to increase can also take into account while aesthetic property and ensure to eliminate system edges stray light function. The present invention can effectively reduce the bore of eyeglass below so that system can be designed to C interface structure general on the market, increases versatility.
Accompanying drawing explanation
Fig. 1 is the structural representation of the entirety of the present invention.
Fig. 2 is the structural representation of the side of the present invention.
Fig. 3 is the sectional structure schematic diagram of the present invention.
Fig. 4 is the perspective view of the front lens barrel of the present invention.
Fig. 5 is the sectional structure schematic diagram of the front lens barrel of the present invention.
Fig. 6 is the perspective view of the rear lens barrel of the present invention.
Fig. 7 is the sectional structure schematic diagram of the rear lens barrel of the present invention.
Fig. 8 is the perspective view of the primary mirror cylinder of the present invention.
Fig. 9 is the sectional structure schematic diagram of the primary mirror cylinder of the present invention.
Figure 10 is the structural representation of the decoration ring of the present invention.
Figure 11 is the sectional structure schematic diagram of the decoration ring of the present invention.
Figure 12 is the perspective view of the focusing handwheel of the present invention.
Figure 13 is the sectional structure schematic diagram of the focusing handwheel of the present invention.
Figure 14 is the perspective view of the aperture handwheel of the present invention.
Figure 15 is the structural representation of the set collar of the present invention.
Figure 16 is the structural representation of the filter ring of the present invention.
Figure 17 is the structural representation of first pressure ring of the present invention.
Figure 18 is the perspective view of the aperture seat of the present invention.
Figure 19 is the sectional structure schematic diagram of the aperture seat of the present invention.
Figure 20 is the structural representation of the interface of the present invention.
Figure 21 is the sectional structure schematic diagram of the interface of the present invention.
Figure 22 is the sectional structure schematic diagram of first back-up ring of the present invention.
Figure 23 is the two dimensional structure schematic diagram of the cam plate of the present invention.
Figure 24 is the side structure schematic diagram of the cam plate of the present invention.
Figure 25 is the structural representation in the diaphragm sheet front of the present invention.
Figure 26 is the diaphragm sheet side structure schematic diagram of the present invention.
Figure 27 is the diaphragm sheet structure schematic diagram of the present invention.
Figure 28 is the structural representation of first eyeglass of the present invention.
Figure 29 is the structural representation of the 2nd eyeglass of the present invention.
Figure 30 is the structural representation of the 3rd eyeglass of the present invention.
Figure 31 is the structural representation of the 4th eyeglass of the present invention.
Figure 32 is the structural representation of the 5th eyeglass of the present invention.
Figure 33 is the structural representation of the 6th eyeglass of the present invention.
Figure 34 is the structural representation of the 7th eyeglass of the present invention.
Figure 35 is the structural representation of the 8th eyeglass of the present invention.
Figure 36 is the structural representation of the 9th eyeglass of the present invention.
Figure 37 is the structural representation of the tenth eyeglass of the present invention.
Figure 38 is the structural representation of the 11 eyeglass of the present invention.
Figure 39 is the structural representation of the front optical group of the present invention.
Figure 40 is the structural representation of the rear optical group of the present invention.
In figure: 1 be front lens barrel, 2 be rear lens barrel, 3 be primary mirror cylinder, 4 be focusing handwheel, 6 be aperture handwheel, 7 be set collar, 8 be filter ring, 9 be aperture seat, 10 be cam plate for interface, 11 be the first pressure ring, 12 be the 2nd pressure ring, 13 is the first packing ring, 16,17 be diaphragm sheet, 19 be the spacing nail of aperture handwheel, 21 be the spacing nail of focusing handwheel for guiding nail, 20 for decoration ring, 5; C1 to be the first eyeglass, C2 be the 2nd eyeglass, C3 to be the 3rd eyeglass, C4 be the 4th eyeglass, C5 to be the 5th eyeglass, C6 be the 6th eyeglass, C7 to be the 7th eyeglass, C8 be the 8th eyeglass, C9 to be the 9th eyeglass, C10 be the tenth eyeglass, C11 are the 11 eyeglass, 22 is arc step, 30 be spiral groove, 160 be diaphragm guide nail slot, 161 be cam plate slip strongback, 170 to lead nail, 70 for diaphragm be notch.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1 to Figure 40, a kind of starlight level rear optical group of road monitoring zoom lens, it is characterized in that: described rear optical group comprises the 6th eyeglass C6 arranged successively along light incident direction, 7th eyeglass C7, 8th eyeglass C8, 9th eyeglass C9, tenth eyeglass C10 and the 11 eyeglass C11, wherein the 6th eyeglass C6, 9th eyeglass C9 is two convex type lens, tenth eyeglass C10 is single convex type lens, 7th eyeglass C7 is double concave type lens, 8th eyeglass C8 and the 11 eyeglass C11 is crescent lens, 8th eyeglass C8 and the 9th eyeglass C9 forms the gummed group of contiguity.
The S11 curvature radius of described 6th eyeglass C6 is 39.439mm, S12 curvature radius is-51.155mm, and specific refractory power is 1.945958 �� 50X10-5, abbe number is 17.944 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 12.8 �� 0.02; The S13 curvature radius of the 7th eyeglass C7 is-44.344mm, S14 curvature radius is 26.51mm, and specific refractory power is 1.728250 �� 50X10-5, abbe number is 28.315 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 2 �� 0.02; The S15 curvature radius of the 8th eyeglass C8 is 50.729mm, S16 curvature radius is-21.569mm, and specific refractory power is 1.846670 �� 50X10-5, abbe number is 23.791 �� 0.8%, and effective diameter is 22.4mm, and center of lens thickness D5 is 1.6 �� 0.02; The S7 curvature radius of the 9th eyeglass C9 is 21.569mm, S18 curvature radius is-38.818mm, and specific refractory power is 1.607381 �� 50X10-5, abbe number is 56.657 �� 0.8%, and effective diameter is 23.1mm, and center of lens thickness D5 is 8.2 �� 0.02; The S19 curvature radius of the tenth eyeglass C10 is 25.651mm, S20 curvature radius is infinitely great, and specific refractory power is 1.617203 �� 50X10-5, abbe number is 53.928 �� 0.8%, and effective diameter is 20.4mm, and center of lens thickness D5 is 19.5 �� 0.02; The S21 curvature radius of the 11 eyeglass C11 is 27.959mm, S22 curvature radius is 15.4mm, and specific refractory power is 1.785901 �� 50X10-5, abbe number is 44.207 �� 0.8%, and effective diameter is 18.5mm, and center of lens thickness D5 is 2.1 �� 0.02.
A kind of starlight level road monitoring zoom lens, described starlight level road monitoring zoom lens comprises primary mirror cylinder 3, is disposed with front lens barrel 1, diaphragm regulating mechanism and rear lens barrel 2 along light incident direction in described primary mirror cylinder 3, it is disposed with the first eyeglass C1, the 2nd eyeglass C2, the 3rd eyeglass C3, the 4th eyeglass C4 and the 5th eyeglass C5 along light incident direction in described front lens barrel 1, wherein the first eyeglass C1, the 2nd eyeglass C2 and the 4th eyeglass C4 are positive crescent moon type lens, 3rd eyeglass C3 is double concave type lens, 5th eyeglass C5 is two convex type lens, and first eyeglass C1 and the 2nd eyeglass C2 form the gummed group of contiguity, the 3rd eyeglass C3 and the 4th eyeglass C4 forms the gummed group of contiguity, it is disposed with the 6th eyeglass C6, the 7th eyeglass C7, the 8th eyeglass C8, the 9th eyeglass C9, the tenth eyeglass C10 and the 11 eyeglass C11 along light incident direction in described rear lens barrel 2, wherein the 6th eyeglass C6, the 9th eyeglass C9 are two convex type lens, tenth eyeglass C10 is single convex type lens, 7th eyeglass C7 is double concave type lens, 8th eyeglass C8 and the 11 eyeglass C11 is crescent lens, and the 8th eyeglass C8 and the 9th eyeglass C9 forms the gummed group of contiguity, front lens barrel 1 outside is provided with the focusing handwheel 5 being threaded with it, and focusing handwheel 5 rotates socket with primary mirror cylinder 3, diaphragm regulating mechanism comprises diaphragm sheet 17, cam plate 16 and aperture seat 9, cam plate 16 and aperture seat 9 are rotationally connected, diaphragm sheet 17 is connected by loose slot with cam plate 16, diaphragm sheet 17 journey curved month type, its two ends are respectively equipped with a diaphragm and lead nail 170, described 2 diaphragms are led nail 170 and are separately positioned on the two sides of diaphragm sheet 17, and outwardly convex, cam plate 16 there is circular open, circular open is provided with radial multiple diaphragm guide nail slots 160, diaphragm is led nail 170 and is flexibly connected in diaphragm guide nail slot 160, cam plate 16 is slidably connected by cam plate slip strongback 161 and aperture handwheel 6, aperture handwheel 6 rotates socket with primary mirror cylinder 3, the outer wall of rear lens barrel 2 is provided with arc step 22, and front lens barrel 1 is fixedly connected with the arc step 22 of rear lens barrel 2.
Decoration ring 4 it is provided with in the middle part of described primary mirror cylinder 3; The first packing ring 13 also it is provided with between 2nd eyeglass C2 and the 3rd eyeglass C3; The rear and front end of rear lens barrel 2 is respectively equipped with the first pressure ring 11 and the 2nd pressure ring 12.
Described front lens barrel 1 front end is provided with filter ring 8; The interior perisporium of described filter ring 8 stepped is reduced from outer gradually toward interior, and the interior perisporium of the front-end port of filter ring 8 is provided with screw thread.
Being provided with set collar 7 outside described primary mirror cylinder 3, be provided with a notch 70 in set collar, notch 70 position that primary mirror cylinder 3 is positioned at corresponding set collar 7 is provided with guiding nail 19; Machinery spacer ring it is provided with between 6th eyeglass C6, the 7th eyeglass C7 and the 8th eyeglass C8.
Jiao >=12.5mm after the flange of described starlight level road monitoring zoom lens, burnt 12.82mm after optics; Focal length is 35mm �� 2mm, and field angle is 36 �� �� 1.8 ��.
It is spacing that described aperture handwheel 6 is undertaken by the spacing nail of aperture handwheel 20 and primary mirror cylinder 3 rotating; It is spacing that focusing handwheel 5 is undertaken by the spacing nail of focusing handwheel 21 and primary mirror cylinder 3 rotating; Rear lens barrel 2 is also provided with interface 10.
Described diaphragm sheet 17 is sheet, crescent moon, and its outer edge radius is 29 �� 0.03mm, and inner edges radius is 20.6 �� 0.03mm, and it is 138 �� �� 6 �� that two diaphragm leads the folding angle [alpha] of nail 170; Diaphragm leads nail 170.
The S1 curvature radius of described first eyeglass C1 is 23.032mm, S2 curvature radius is 49.48mm, and specific refractory power is 1.755205 �� 50X10-5, abbe number is 27.54 �� 0.8%, and effective diameter is 31mm, and center of lens thickness D1 is 5 �� 0.02; The S3 curvature radius of the 2nd eyeglass C2 is 49.48mm, S4 curvature radius is 14.457mm, and specific refractory power is 1.523074 �� 50X10-5, abbe number is 58.658 �� 0.8%, and effective diameter is 31.1mm, and center of lens thickness D2 is 2.2 �� 0.02; The S5 curvature radius of the 3rd eyeglass C3 is-24.608mm, S6 curvature radius is 20.398mm, and specific refractory power is 1.846670 �� 50X10-5, abbe number is 23.791 �� 0.8%, and effective diameter is 18.6mm, and center of lens thickness D3 is 2.3 �� 0.02; The S7 curvature radius of the 4th eyeglass C4 is 20.398mm, S8 curvature radius is 198.437mm, and specific refractory power is 1.744004 �� 50X10-5, abbe number is 44.904 �� 0.8%, and effective diameter is 20.6mm, and center of lens thickness D4 is 4.5 �� 0.02; The S9 curvature radius of the 5th eyeglass C5 is 46.969mm, S10 curvature radius is-29.38mm, and specific refractory power is 1.496998 �� 50X10-5, abbe number is 81.595 �� 0.8%, and effective diameter is 20mm, and center of lens thickness D5 is 5.5 �� 0.02.
The S11 curvature radius of described 6th eyeglass C6 is 39.439mm, S12 curvature radius is-51.155mm, and specific refractory power is 1.945958 �� 50X10-5, abbe number is 17.944 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 12.8 �� 0.02; The S13 curvature radius of the 7th eyeglass C7 is-44.344mm, S14 curvature radius is 26.51mm, and specific refractory power is 1.728250 �� 50X10-5, abbe number is 28.315 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 2 �� 0.02; The S15 curvature radius of the 8th eyeglass C8 is 50.729mm, S16 curvature radius is-21.569mm, and specific refractory power is 1.846670 �� 50X10-5, abbe number is 23.791 �� 0.8%, and effective diameter is 22.4mm, and center of lens thickness D5 is 1.6 �� 0.02; The S7 curvature radius of the 9th eyeglass C9 is 21.569mm, S18 curvature radius is-38.818mm, and specific refractory power is 1.607381 �� 50X10-5, abbe number is 56.657 �� 0.8%, and effective diameter is 23.1mm, and center of lens thickness D5 is 8.2 �� 0.02; The S19 curvature radius of the tenth eyeglass C10 is 25.651mm, S20 curvature radius is infinitely great, and specific refractory power is 1.617203 �� 50X10-5, abbe number is 53.928 �� 0.8%, and effective diameter is 20.4mm, and center of lens thickness D5 is 19.5 �� 0.02; The S21 curvature radius of the 11 eyeglass C11 is 27.959mm, S22 curvature radius is 15.4mm, and specific refractory power is 1.785901 �� 50X10-5, abbe number is 44.207 �� 0.8%, and effective diameter is 18.5mm, and center of lens thickness D5 is 2.1 �� 0.02.
The diaphragm chip architecture of inventive design independence, closely can not take into account optimizing machining technology, assembling technique, and can promote processing, efficiency of assembling.
It is preposition that the present invention arranges focusing regulating mechanism, and diaphragm regulating mechanism is rearmounted, contributes to the rational deployment of structure and the consistent coordination of overall ratio. Focusing regulating mechanism adopts the positive and negative spiral shell tooth grinding cooperation of different lead to focus, spacing to rear lens cone seat and primary mirror cylinder by spacing nail, arc step, when rotating focusing handwheel 5, after making focusing handwheel 5 drive front lens barrel 1 relatively, lens barrel 2 does circumferential motion and trace quantity helix advance or retrogressing, and focusing action is accurate, reliable, stagnant without blocking.
The diaphragm Principles of Regulation of the present invention are: aperture handwheel 6 is rotated through cam plate 16 and drives diaphragm to lead nail and then drive diaphragm sheet 17 to rotate relative to rear lens barrel 2, it is specifically, cam plate 16 is stirred diaphragm by diaphragm guide nail slot 160 and is led nail 170, and then drive the aperture setting device rotation of independent variable diaphragm, thus reach independent and regulate aperture to open the little object in high point.
Embodiment recited above is only the preferred embodiment of the present invention be described; not the spirit and scope of the present invention are limited; do not departing under inventive design design prerequisite; various modification that in this area, the technical scheme of the present invention is made by ordinary skill technician and improvement; all should falling into protection scope of the present invention, the technology contents of request of the present invention protection is all recorded in detail in the claims.
Claims (2)
1. the starlight level rear optical group of road monitoring zoom lens, it is characterized in that: described rear optical group comprises the 6th eyeglass (C6) arranged successively along light incident direction, 7th eyeglass (C7), 8th eyeglass (C8), 9th eyeglass (C9), tenth eyeglass (C10) and the 11 eyeglass (C11), wherein the 6th eyeglass (C6), 9th eyeglass (C9) is two convex type lens, tenth eyeglass (C10) is single convex type lens, 7th eyeglass (C7) is double concave type lens, 8th eyeglass (C8) and the 11 eyeglass (C11) are crescent lens, the gummed group of the 8th eyeglass (C8) and the 9th eyeglass (C9) composition contiguity.
2. the starlight level rear optical group of road monitoring zoom lens according to claim 1, it is characterized in that the S11 curvature radius of described 6th eyeglass (C6) is 39.439mm, S12 curvature radius is-51.155mm, and specific refractory power is 1.945958 �� 50X10-5, abbe number is 17.944 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 12.8 �� 0.02; The S13 curvature radius of the 7th eyeglass (C7) is-44.344mm, S14 curvature radius is 26.51mm, and specific refractory power is 1.728250 �� 50X10-5, abbe number is 28.315 �� 0.8%, and effective diameter is 22.2mm, and center of lens thickness D5 is 2 �� 0.02; The S15 curvature radius of the 8th eyeglass (C8) is 50.729mm, S16 curvature radius is-21.569mm, and specific refractory power is 1.846670 �� 50X10-5, abbe number is 23.791 �� 0.8%, and effective diameter is 22.4mm, and center of lens thickness D5 is 1.6 �� 0.02; The S7 curvature radius of the 9th eyeglass (C9) is 21.569mm, S18 curvature radius is-38.818mm, and specific refractory power is 1.607381 �� 50X10-5, abbe number is 56.657 �� 0.8%, and effective diameter is 23.1mm, and center of lens thickness D5 is 8.2 �� 0.02; The S19 curvature radius of the tenth eyeglass (C10) is 25.651mm, S20 curvature radius is infinitely great, and specific refractory power is 1.617203 �� 50X10-5, abbe number is 53.928 �� 0.8%, and effective diameter is 20.4mm, and center of lens thickness D5 is 19.5 �� 0.02; The S21 curvature radius of the 11 eyeglass (C11) is 27.959mm, S22 curvature radius is 15.4mm, and specific refractory power is 1.785901 �� 50X10-5, abbe number is 44.207 �� 0.8%, and effective diameter is 18.5mm, and center of lens thickness D5 is 2.1 �� 0.02.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308647A (en) * | 2019-11-25 | 2020-06-19 | 福建福光股份有限公司 | Small-size full glass optical system of super large light ring starlight level |
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Address after: 210046 Jiangsu Province Economic and Technological Development Zone Nanjing Xing Zhi road Xingzhi Science Park building B room 1109 Applicant after: NANJING AUNG CHI PHOTOELECTRIC TECHNOLOGY CO., LTD. Address before: 211599 Nanjing District, Jiangsu, Liuhe District, State Road, No. 718 Applicant before: NANJING AUNG CHI PHOTOELECTRIC TECHNOLOGY CO., LTD. |
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Application publication date: 20160608 |