CN202433659U - Optical lens device with adjustable illumination range - Google Patents
Optical lens device with adjustable illumination range Download PDFInfo
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- CN202433659U CN202433659U CN2012200140840U CN201220014084U CN202433659U CN 202433659 U CN202433659 U CN 202433659U CN 2012200140840 U CN2012200140840 U CN 2012200140840U CN 201220014084 U CN201220014084 U CN 201220014084U CN 202433659 U CN202433659 U CN 202433659U
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Abstract
The utility model discloses an optical lens device with an adjustable illumination range. The device comprises a first front fixed lens group, a second optical adjustment lens group and a third rear fixed lens groups which are orderly arranged in a lens barrel; the first front fixed lens group is fixed in the front part of the lens barrel, and comprising an optical lens with positive optical refractive index; the second optical adjustment lens group is movably arranged in the middle part of the lens barrel, and comprising an optical lens with negative optical refractive index; and the third fixed lens group is fixed in the rear part of the lens barrel, and comprising a lens with positive optical refractive index. According to the utility model, the effective illumination is kept within the imaging range, meanwhile, the structure of an illuminating module is simplified, the usage rate of the light energy is enhanced, and the volume of the product is reduced, so that the cost of the product is effectively reduced, and the volume of the product is decreased.
Description
Technical field
The utility model relates to security protection industry field of video monitoring, the adjustable optical camera lens device of in particular a kind of illumination zone.
Background technology
In security protection video monitoring industry, need there be the lighting module of near infrared light (is the near infrared light of 850nm like wavelength) could guarantee operate as normal in night, can guarantee all can be in normal operating conditions within one day.As far as watch-dog, this point is vital.
Because the angle of divergence of single led light emitted bundle is big, so, generally adopt the mode that is arranged to the LED of a plurality of near infrared lights in rectangle or circular matrix in the prior art for to satisfy the purpose that can illuminate the surveillance area at night.
Because at present the electric light power of LED is very not high, causes a large amount of electric energy to convert heat energy to, and descend by the too high luminescence efficiency of LED that can cause of the too many device temperature that causes of heating, from and have more electric energy to convert heat energy to.
So in order to solve this vicious cycle, adopted again add at the back side of matrix L ED heat sink and (or) radiator fan comes LED lighting module radiating and cooling.Be outside this way bad, the one, low to the emission light beam utilization factor of LED, wasted a large amount of electric energy; The 2nd, owing to need the extra heat-sink unit that adds, increased structural complicacy, the small product size that makes is huge and with high costs.
Therefore, prior art awaits to improve and development.
The utility model content
The technical matters that the utility model will solve is, to the above-mentioned defective of prior art, provides a kind of illumination zone adjustable optical camera lens device, the optical lens that provides a kind of low cost, miniaturization and illumination zone to regulate.
The technical scheme that the utility model technical solution problem is adopted is following:
The adjustable optical camera lens device of a kind of illumination zone, wherein, be included in set gradually in the lens barrel first group before fixing len group, second group of optical adjustment lens set, and the 3rd group after the fixing len group;
Wherein, said first group of preceding fixing len group is fixed on the lens barrel front portion, comprises that a light refractive index is positive optical mirror slip; Said second group of optical adjustment lens set is movably arranged on the lens barrel middle part, comprises that a light refractive index is negative optical mirror slip; The fixing len group is fixed on the lens barrel rear portion after said the 3rd group, comprises that one piece of light refractive index is positive eyeglass;
Change the beam projecting angle of its light-emitting component of placing at the back through fixing len group after said the 3rd group, make by the light-emitting component emitted light beams and can get into lens barrel, project first group through second group of optical adjustment lens set then before the fixing len group; And regulate through second group of optical adjustment lens set moving forward and backward on optical axis and to project the beam incident angle degree on the fixing len group before first group, be to penetrate after the caliber size of camera lens outgoing through fixing len group restriction illuminating bundle before first group then.
The adjustable optical camera lens device of said illumination zone wherein, sets gradually in said lens barrel:
First stationary installation 111 of fixing len group 110 before being used for fixing first group;
The regulating device 121 that is used for fixing second group of optical adjustment lens set 120;
And second stationary installation 131 that is used for fixing fixing len group 130 after the 3rd group.
The adjustable optical camera lens device of said illumination zone, wherein, the inner wall sleeve of the outer wall of said first stationary installation 111 and said lens barrel 100 connects in succession; The inner wall sleeve of the outer wall of second stationary installation 131 and said lens barrel 100 connects in succession.
The adjustable optical camera lens device of said illumination zone; Wherein, Said regulating device 121 comprises that two ends are separately fixed at first slide bar 122 and second slide bar 123 on said first stationary installation 111, second stationary installation 131; The sliding shoe that is used for fixing said second group of optical adjustment lens set 120 124 that is slidingly connected with said first slide bar 122; Slide on said first slide bar 122 through regulating said sliding shoe 124, make second group of optical adjustment lens set 120 moving forward and backward on optical axis.
The adjustable optical camera lens device implementation method of a kind of illumination zone wherein, comprises step:
A, in lens barrel, set gradually and comprise that light refractive index is fixing len group before first group of positive optical mirror slip, comprises that light refractive index is second group of optical adjustment lens set of negative optical mirror slip and comprise that light refractive index is a fixing len group behind the 3rd group on the positive eyeglass;
Wherein, with said before first group the fixing len group be fixed on the lens barrel front portion, said second group of optical adjustment lens set is movably arranged in the middle part of the lens barrel, and fixing len group after said the 3rd group is fixed on the lens barrel rear portion;
B, change the beam projecting angle of its light-emitting component of placing at the back, make by the light-emitting component emitted light beams and can get into lens barrel through fixing len group after said the 3rd group, project first group through second group of optical adjustment lens set then before the fixing len group; And regulate through second group of optical adjustment lens set moving forward and backward on optical axis and to project the beam incident angle degree on the fixing len group before first group, be to penetrate after the caliber size of camera lens outgoing through fixing len group restriction illuminating bundle before first group then.
The adjustable optical camera lens device of said illumination zone; Wherein, Said second group of optical adjustment lens set is set to be installed in before first group in the lens barrel behind fixing len group and the 3rd group between the fixing len group, in lens barrel, can seesaw along optical axis through a regulating device.
The adjustable optical camera lens device of the illumination zone that the utility model provided and since adopted be included in set gradually in the lens barrel first group before fixing len group, second group of optical adjustment lens set, and the 3rd group after the fixing len group; Wherein, said first group of preceding fixing len group is fixed on the lens barrel front portion, comprises that a light refractive index is positive optical mirror slip; Said second group of optical adjustment lens set is movably arranged on the lens barrel middle part, comprises that a light refractive index is negative optical mirror slip; The fixing len group is fixed on the lens barrel rear portion after said the 3rd group, comprises that one piece of light refractive index is positive eyeglass.First group is preceding fixation group, and its stationkeeping in lens barrel is constant; Second group is illumination zone adjusting group, and it can seesaw along optical axis in lens barrel, thereby reaches the purpose that illumination zone is regulated; The 3rd group is the back fixation group, its stationkeeping in lens barrel.
Wherein, can reach illumination zone and change ratio at the light optics camera lens more than 10 times through regulating second group of optical adjustment lens set.This lens aperture can reach more than 0.8, thereby reaches big logical optical efficiency, thereby improves the utilization factor of the beam energy of light-emitting component.
The advantage of the utility model is, be held in can obtain effective lighting as scope in, can simplify the lighting module structure, improve the utilization factor of luminous energy and dwindle small product size.Thereby can effectively reduce cost of products, dwindle small product size.
Description of drawings
Fig. 1 is the preferred embodiment structural representation of the adjustable optical camera lens device of the utility model illumination zone.
Fig. 2 is the preferred embodiment lens structure synoptic diagram of the adjustable optical camera lens device of the utility model illumination zone.
Fig. 3 is a lens construction synoptic diagram when being 46 degree illuminations.
Fig. 4 is a lens construction synoptic diagram when being 4 degree illuminations.
Fig. 5 is an illumination zone synoptic diagram when being 46 degree illuminations.
Fig. 6 is an illumination zone synoptic diagram when being 4 degree illuminations.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, clear and definite, below develop simultaneously embodiment to the utility model further explain with reference to accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1, Fig. 1 is the preferred embodiment structural representation of the adjustable optical camera lens device of the utility model illumination zone.Among Fig. 1, fixing len group 110 before the adjustable optical camera lens device of said illumination zone is included in set gradually in the lens barrel 100 first group, second group of optical adjustment lens set 120, and the 3rd group after fixing len group 130;
Wherein, said first group of preceding fixing len group 110 can be positive optical mirror slip for a light refractive index, is fixed on the lens barrel front portion, is used to limit the caliber size that illuminating bundle is the camera lens outgoing;
Said second group of optical adjustment lens set 120 comprises that a light refractive index is negative optical mirror slip; Be movably arranged on the lens barrel middle part, regulate projecting the beam incident angle degree on the fixing len group 110 before first group through second group of optical adjustment lens set moving forward and backward on optical axis;
Preferably among the embodiment, can in said lens barrel 100, set gradually:
First stationary installation 111 of fixing len group 110 before being used for fixing first group;
The regulating device 121 that is used for fixing second group of optical adjustment lens set 120;
And second stationary installation 131 that is used for fixing fixing len group 130 after the 3rd group.
Wherein, the outer wall of said first stationary installation 111 and the inner wall sleeve of said lens barrel 100 can be set connects in succession; The inner wall sleeve of the outer wall of second stationary installation 131 and said lens barrel 100 connects in succession.Said regulating device 121 comprises that two ends are separately fixed at first slide bar 122 and second slide bar 123 on said first stationary installation 111, second stationary installation 131, the sliding shoe that is used for fixing said second group of optical adjustment lens set 120 124 that is slidingly connected with said first slide bar 122.Slide on said first slide bar 122 through regulating said sliding shoe 124; Can make second group of optical adjustment lens set 120 moving forward and backward on optical axis, regulate projecting the beam incident angle degree on the fixing len group 110 before first group through second group of optical adjustment lens set moving forward and backward on optical axis.
The adjustable optical camera lens device of the illumination zone of present embodiment; Principle of work example such as Fig. 2 are to shown in Figure 6; Wherein, the stationkeeping of fixing len group 130 behind fixing len group 110 and the 3rd group before first group, second group of optical adjustment lens set 120 are done along optical axis and are seesawed.After second group of optical adjustment lens set 120 is near the 3rd group, during fixing len group 130, can realize large-scale illumination, as shown in Figure 4; After second group of optical adjustment lens set 120 is away from the 3rd group fixing len group 130 and near first group before during fixing len group 110, can realize illumination among a small circle, as shown in Figure 3.First group is that positive optical mirror slip is formed by one piece of light refractive index, and second group is that negative optical mirror slip is formed by one piece of light refractive index, and the 3rd group is that positive eyeglass is formed by one piece of light refractive index.When second group in lens barrel when optical axis seesaws, the position of light-emitting component 200 remains unchanged.
Be the data of a preferred embodiment of present embodiment below.
The related symbol explanation:
R1, r2, r3 ... The radius-of-curvature of expression lens surface shape, the extra filling explanation of non-spherical surface.
D1, d2, d3 ... Represent thickness and the airspace of each lens on optical axis.
N1, n2, n3 ... The refractive index (when d light) of expression lens material.
V1, v2, v3 ... The Abbe constant (when d light) of expression lens material.
Numeral after the above letter is for to begin each surperficial sequence number from the thing side.
Specifically as shown in Figure 2, wherein, r1 is the radius-of-curvature of first face of eyeglass 1, and r2 is the radius-of-curvature of second face of eyeglass 1; Wherein eyeglass 1 is that the light refractive index of fixing len group 110 is positive optical mirror slip before first group.
R3 is the radius-of-curvature of first face of eyeglass 2, and r4 is the radius-of-curvature of second face of eyeglass 2, and wherein eyeglass 2 is the optical mirror slip of light refractive index for bearing of said second group of optical adjustment lens set 120.
R5 is the radius-of-curvature of first face of eyeglass 3, and r6 is the radius-of-curvature of second face of eyeglass 3, and wherein, the light refractive index of fixing len group 130 was positive eyeglass after eyeglass 3 was said the 3rd group.
R7 is the radius-of-curvature of diaphragm face, and r8 is effective light-emitting area of light-emitting component 200.
D1 is the center thickness of eyeglass 1, and n1 and v1 are respectively the refractive index and the Abbe constant of eyeglass 1 material; D3 is the center thickness of eyeglass 2, and n3 and v3 are respectively the refractive index and the Abbe constant of eyeglass 2 materials; D5 is the center thickness of eyeglass 3, and n5 and v5 are respectively the refractive index and the Abbe constant of eyeglass 3 materials.D2 is the center thickness between eyeglass 1 and the eyeglass 2; D4 is the center thickness between eyeglass 2 and the eyeglass 3; D6 is the center thickness between eyeglass 3 and the diaphragm; D7 is the center thickness between diaphragm and the effective light-emitting area of luminous part.
The basic specifications parameter of optical system is following in the present embodiment:
Illumination zone: 4 degree ~ 46 degree;
Aperture Fno.:0.8.
Table one:
r1 40.2 d1 10.4 n1 1.56 v1 56
R2-293 d2 variable (during i.e. 46 degree illuminations on a large scale is 1.3mm)
(when promptly 4 degree throw light among a small circle is 32.9mm)
r3 202.1 d3 1.7 n3 1.78 v3 25.7
R4 13.6 d4 variable (during i.e. 46 degree illuminations on a large scale is 32.9mm)
(when promptly 4 degree throw light among a small circle is 1.3mm)
r5 8.05 d5 7.3 n5 1.8 v5 42
r6 58.5 d6 0.28
R7 diaphragm d7 5.84
The effective light-emitting area of r8 light-emitting component.
In the above-mentioned table one:
D2 is variable: during i.e. 46 degree illuminations on a large scale d2 be 1.3 46 degree on a large scale said here exactly the interval between first piece of eyeglass under first times of state and second piece of eyeglass be exactly 1.3mm.D2 is 32.9mm during i.e. 4 degree illuminations among a small circle, and 46 degree of saying the here on a large scale interval between first piece of eyeglass under the 10th times of state and second piece of eyeglass exactly are exactly 32.9mm.
D4 is variable: during i.e. 46 degree illuminations on a large scale be 32.9 46 degree on a large scale said here exactly the interval between the 3rd piece of eyeglass under first times of state and second piece of eyeglass be exactly 32.9mm.During i.e. 4 degree illuminations be among a small circle 1.3 46 degree on a large scale said here exactly the interval between the 3rd piece of eyeglass under the 10th times of state and second piece of eyeglass be exactly 1.3mm.Like Fig. 5 and shown in Figure 6, wherein, Fig. 5 is an illumination zone synoptic diagram when being 46 degree illuminations.Fig. 6 is an illumination zone synoptic diagram when being 4 degree illuminations.
Therefore the utility model embodiment can obtain a kind of wide adjusting range, to the light emitted bundle capacity gauge of light-emitting component illumination optical camera lens strong and simple in structure.Adopt the utility model be held in can obtain effective lighting as scope in, can simplify the lighting module structure, improve the utilization factor of luminous energy and dwindle small product size, thereby can effectively reduce cost of products, dwindle small product size.Wherein, can reach illumination zone and change ratio at the light optics camera lens more than 10 times through regulating second group of optical adjustment lens set.This lens aperture can reach more than 0.8, thereby reaches big logical optical efficiency, thereby improves the utilization factor of the beam energy of light-emitting component.
Based on the foregoing description, the utility model embodiment also provides a kind of illumination zone adjustable optical camera lens device implementation method, and said method mainly may further comprise the steps:
The first step: at first in lens barrel, set gradually and comprise that light refractive index is fixing len group before first group of positive optical mirror slip, comprises that light refractive index is second group of optical adjustment lens set of negative optical mirror slip and comprise that light refractive index is a fixing len group behind the 3rd group on the positive eyeglass;
Wherein, with said before first group the fixing len group be fixed on the lens barrel front portion, said second group of optical adjustment lens set is movably arranged in the middle part of the lens barrel, and fixing len group after said the 3rd group is fixed on the lens barrel rear portion; Specifically as stated.
Second step, change the beam projecting angle of its light-emitting component of placing at the back through fixing len group after said the 3rd group; Make by the light-emitting component emitted light beams and can get into lens barrel, project first group through second group of optical adjustment lens set then before the fixing len group; And regulate through second group of optical adjustment lens set moving forward and backward on optical axis and to project the beam incident angle degree on the fixing len group before first group, be to penetrate after the caliber size of camera lens outgoing through fixing len group restriction illuminating bundle before first group then.Specifically as stated.
The adjustable optical camera lens device of said illumination zone; Wherein, Said second group of optical adjustment lens set is set to be installed in before first group in the lens barrel behind fixing len group and the 3rd group between the fixing len group, in lens barrel, can seesaw along optical axis through a regulating device.
In sum, the adjustable optical camera lens device of the illumination zone that the utility model provided since adopted be included in set gradually in the lens barrel first group before fixing len group, second group of optical adjustment lens set, and the 3rd group after the fixing len group; Wherein, said first group of preceding fixing len group is fixed on the lens barrel front portion, comprises that a light refractive index is positive optical mirror slip; Said second group of optical adjustment lens set is movably arranged on the lens barrel middle part, comprises that a light refractive index is negative optical mirror slip; The fixing len group is fixed on the lens barrel rear portion after said the 3rd group, comprises that one piece of light refractive index is positive eyeglass.First group is preceding fixation group, and its stationkeeping in lens barrel is constant; Second group is illumination zone adjusting group, and it can seesaw along optical axis in lens barrel, thereby reaches the purpose that illumination zone is regulated; The 3rd group is the back fixation group, its stationkeeping in lens barrel.
Wherein, can reach illumination zone and change ratio at the light optics camera lens more than 10 times through regulating second group of optical adjustment lens set.This lens aperture can reach more than 0.8, thereby reaches big logical optical efficiency, thereby improves the utilization factor of the beam energy of light-emitting component.
The advantage of the utility model is, be held in can obtain effective lighting as scope in, can simplify the lighting module structure, improve the utilization factor of luminous energy and dwindle small product size.Thereby can effectively reduce cost of products, dwindle small product size.
Should be understood that; The application of the utility model is not limited to above-mentioned giving an example, and concerning those of ordinary skills, can improve or conversion according to above-mentioned explanation;, all these improvement and conversion all should belong to the protection domain of the utility model accompanying claims.
Claims (4)
1. the adjustable optical camera lens device of illumination zone is characterized in that, be included in set gradually in the lens barrel first group before fixing len group, second group of optical adjustment lens set, and the 3rd group after the fixing len group;
Wherein, said first group of preceding fixing len group is fixed on the lens barrel front portion, comprises that a light refractive index is positive optical mirror slip; Said second group of optical adjustment lens set is movably arranged on the lens barrel middle part, comprises that a light refractive index is negative optical mirror slip; The fixing len group is fixed on the lens barrel rear portion after said the 3rd group, comprises that one piece of light refractive index is positive eyeglass;
Change the beam projecting angle of its light-emitting component of placing at the back through fixing len group after said the 3rd group, make by the light-emitting component emitted light beams and can get into lens barrel, project first group through second group of optical adjustment lens set then before the fixing len group; And regulate through second group of optical adjustment lens set moving forward and backward on optical axis and to project the beam incident angle degree on the fixing len group before first group, be to penetrate after the caliber size of camera lens outgoing through fixing len group restriction illuminating bundle before first group then.
2. according to the adjustable optical camera lens device of the said illumination zone of claim 1, it is characterized in that, in said lens barrel, set gradually:
First stationary installation (111) of fixing len group (110) before being used for fixing first group;
The regulating device (121) that is used for fixing second group of optical adjustment lens set (120);
And second stationary installation (131) that is used for fixing fixing len group (130) after the 3rd group.
3. according to the adjustable optical camera lens device of the said illumination zone of claim 2, it is characterized in that the inner wall sleeve of the outer wall of said first stationary installation (111) and said lens barrel (100) connects in succession; The inner wall sleeve of the outer wall of second stationary installation (131) and said lens barrel (100) connects in succession.
4. according to the adjustable optical camera lens device of the said illumination zone of claim 2; It is characterized in that; Said regulating device (121) comprises that two ends are separately fixed at first slide bar (122) and second slide bar (123) on said first stationary installation (111), second stationary installation (131); The sliding shoe (124) that is used for fixing said second group of optical adjustment lens set (120) that is slidingly connected with said first slide bar (122); Go up slip through regulating said sliding shoe (124) at said first slide bar (122), make second group of optical adjustment lens set (120) moving forward and backward on optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200140840U CN202433659U (en) | 2012-01-13 | 2012-01-13 | Optical lens device with adjustable illumination range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200140840U CN202433659U (en) | 2012-01-13 | 2012-01-13 | Optical lens device with adjustable illumination range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202433659U true CN202433659U (en) | 2012-09-12 |
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ID=46783095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200140840U Expired - Lifetime CN202433659U (en) | 2012-01-13 | 2012-01-13 | Optical lens device with adjustable illumination range |
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| Country | Link |
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| CN (1) | CN202433659U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809267A (en) * | 2012-11-06 | 2014-05-21 | 财团法人工业技术研究院 | Projection lens, projection apparatus using the same, and light-driven microparticle device |
| TWI512383B (en) * | 2012-07-04 | 2015-12-11 | Ind Tech Res Inst | Optically-induced dielectrophoresis device |
| US9620929B2 (en) | 2013-02-01 | 2017-04-11 | Shenzhen Protruly Electronics Co., Ltd. | Laser lighting device |
-
2012
- 2012-01-13 CN CN2012200140840U patent/CN202433659U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI512383B (en) * | 2012-07-04 | 2015-12-11 | Ind Tech Res Inst | Optically-induced dielectrophoresis device |
| CN103809267A (en) * | 2012-11-06 | 2014-05-21 | 财团法人工业技术研究院 | Projection lens, projection apparatus using the same, and light-driven microparticle device |
| TWI498593B (en) * | 2012-11-06 | 2015-09-01 | Ind Tech Res Inst | Projection lens, projection device and optically-induced microparticle device |
| US9134513B2 (en) | 2012-11-06 | 2015-09-15 | Industrial Technology Research Institute | Projection lens, projection device and optically-induced microparticle device |
| CN103809267B (en) * | 2012-11-06 | 2016-02-17 | 财团法人工业技术研究院 | Projection lens, projection apparatus using the same, and light-driven microparticle device |
| US9620929B2 (en) | 2013-02-01 | 2017-04-11 | Shenzhen Protruly Electronics Co., Ltd. | Laser lighting device |
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