CN1037573A - Whole pressed light collimator - Google Patents
Whole pressed light collimator Download PDFInfo
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- CN1037573A CN1037573A CN 88102670 CN88102670A CN1037573A CN 1037573 A CN1037573 A CN 1037573A CN 88102670 CN88102670 CN 88102670 CN 88102670 A CN88102670 A CN 88102670A CN 1037573 A CN1037573 A CN 1037573A
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- lens
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- collimator
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Abstract
A kind of whole pressed light collimator has high efficient and small axial size, does not need to apply minute surface.It includes the convex surface refractor (1) of optical relation and the refractor that flanging is arranged (1) and the catadioptric reflector (2) of concave surface, and they all are produced on the common bearing bed.The lateral parts of refractor (1) comprises a ring-type collector lens (4), it be placed in light (13) by focus (F) to the path of reflector (2), it includes Fresnel refraction circle (5,6), and the arrangement of circle (5,6) can directly be suppressed with a procedure in the time of will being convenient to collimater and preparing.
Description
What the present invention relates to is about lighting engineering, more particularly, is about a kind of whole pressed light collimator (lamp bowl).
The present invention can be applied in most effectively in the mass-produced directional lighting device, for example, the portable type signal lamp of the signal lamp of automobile and headlight, traffic lights, small-power searchlight, various uses, comprising can with pocket signal lamp.
Optical collimator (lamp bowl) is the most important parts of various directional lighting devices, generally adopts concave reflector or collector lens as optical collimator.In addition, also adopt the hybrid optical system of the optical collimator that includes reflection and refracting element.In supplying mass-produced illuminating device, for example in signal lamp, if hybrid optical system may be made a kind of whole compacted part, so, the manufacturability of hybrid optical system is the best.
The advantage of optical collimator is: high coefficient of effective action, relatively little (comparing) axial dimension with the diameter of light delivery outlet, material usage is few, exempted the minute surface coating process and handled, pressing process simple (forming) under whole pressed light collimator situation with the direct compacting of a procedure.These advantages are comprehensively produced relevant technical problem with device (as auto lamp) expansion on an illuminating device.
United States Patent (USP) (US-A-2,254,962) a kind of optical collimator is disclosed, it has the optics that whole (whole compacting) made by light transmissive material, these parts are formed by collector lens (refractor) with the coaxial reflected refraction circle (reflector) of lens, the outer edge tight fit of the inner edge of this circle and lens, and encase it.In order to guarantee high coefficient of effective action (big light source collection angle), under the situation of the material usage of appropriateness, such optical collimator must have little illumination holes diameter (perhaps consuming too wide variety of materials consumption when reaching satisfied transversal size), it can only be fit to pocket (small-power) light source, and can not guarantee to have big directed radiation luminous flux.
U.S. Pat-A-3,883,733 and French Patent (FRP) FR-A-2,507,741 disclose the integral body compacting optical collimator of several automobile signal lights, comprised the common bearing bed of making by light transmissive material, axisymmetric refraction arranged on it with catadioptric element (Fresnel cppeHe л b circle), correspondingly as refractor and reflector.This kind optical collimator has enough big illumination holes under moderate material usage situation, but, aspect optical relation, refracting element and reflecting element independently work, thereby US-A-3,883,733 disclosed simple pressed light collimator can not guarantee high coefficient of effective action (solid angle of gathered light is little), and the disclosed optical collimator of FR-A-2507741 has high coefficient of effective action, suppresses also simple.
At US-A-4, the integral body compacting optical collimator of describing in 292,664 that is used for instrument is near the present techniques scheme.This optical collimator comprises the concave reflector in a band circular axial hole, is mounted with the convex surface refractor before the hole.The forward part of this refractor is made the slabbing collector lens and is placed in the front of reflector axial hole, thereby the marginal portion of refractor is connected to become as a whole parts with lens and reflector, and optically relevant with reflector (light of light source passed the edge of refractor earlier before being mapped to reflector).It is possible directly suppressing (along the axle of reflector) optical collimator with a procedure, promptly, make the vertical line of every bit on the optical collimator front surface on its axle, positive projection be arranged, and make the vertical line of every bit on the rear surface on its axle, negative projection be arranged, then can guarantee to eliminate negative casting mold angle.Under moderate reflector axial dimension, the usage factor of the luminous flux of light source of described optical collimator is little, and (can use in its illuminating device at those, it will reduce the coefficient of effective action of this device.Because the luminous flux overwhelming majority of light source is mapped to the edge part of refractor and is not mapped on the reflector, and be the wide-angle state with the optical collimator axle and penetrate.
Basic task of the present invention provides a kind of whole pressed light collimator, wherein should have such optical relation between refracted portion and the reflecting part, can be under the possibility situation that keeps a procedure directly to suppress, in order to reach the usage factor that increases luminous flux of light source, and do not increase the axial dimension of optical collimator.
Proposing of task is to solve like this, whole pressed light collimator includes the concave reflector of a band axial hole, before axial hole, settle a refractor, refractor that the device that is reflected surrounds and reflector constitute an optical system, simultaneously, at the vertical line on the every bit of reflector front surface positive projection is arranged on the optical collimator axle, and negative projection is arranged in the rear surface.According to the present invention, at least the part of refractor is made the ring-type collector lens, its round symmetry axis overlaps with the axle of optical collimator, and its vertical section optic axis is crossing through the focus and the reflector of optical collimator, in this case, at vertical line on any point of ring lens outer surface positive projection is arranged on the optical collimator axle, and vertical line there is negative projection at inner surface.
The described structure of whole compacting optical collimator is because the optically focused effect of ring lens, under the situation that does not increase axial dimension, can increase its coefficient of effective action, this is because reflector has increased the equivalent solid angle of assembling light source, the possibility that the useful procedure of And and this structure is directly suppressed.
In the optimum implementation of collimator structure, the part of ring lens is made the shape of Fresnel refraction circle, and they see on the outer surface that is positioned at the lens bearing bed from the direction of reflector own, and sees on inner surface from the light perforation hole direction of optical collimator.In the simplicity of not destroying compacting with do not increase under the situation of optical collimator material usage, this structure can increase coefficient of effective action.
The refractor of optical collimator comprises And and a confocal sheet collector lens of optical collimator that is placed in the ring lens front in another embodiment, its diameter equals the diameter in ring lens forward position, in this case, convex-planar shaped (focus to optical collimator is protruded) is made at the rear portion in ring lens vertical section (near the part of reflector), and plane-convex shape is made in its front portion, and the planar section in vertical section and the angle of optical collimator axle are not more than 1 ° simultaneously.The ring lens of making like this allows not destroy the possibility of direct compacting, and almost completely covers the unthreaded hole of reflector sky by the sheet lens, therefore, can obtain by the light perforation hole area of optical collimator even light distribution comparatively.
Another of whole compacting optical collimator may embodiment be that the front and rear of ring lens has different refractive powers.Anterior refractive power is greater than the rear portion, and the anterior length in ring lens vertical section (along the optical collimator axle) is than the weak point at rear portion in this case.Under the thickness limit of given focusing angle and ring lens, such embodiment allows the size parameter of preferred on the whole reflector and refractor.
Can understand other goals of the invention of the present invention and advantage from following detailed description to embodiment and accompanying drawing.
Fig. 1 illustrates according to whole pressed light collimator of the present invention;
Fig. 2 is another embodiment of same optical collimator;
Fig. 3 is the profile of Fig. 2 along III-III;
Fig. 4 is the profile of Fig. 2 along IV-IV.
Optical collimator shown in Figure 1 is the part of being suppressed by the integral body that the glass of light-passing plastic or optional color is made, on its common bearing bed, make coaxial (OO ' axle) convex surface (on light radiation direction) refractor 1 and with the concave reflector 2 of this refractor flanging, they have the point of a common focal point F-placement light source on OO ' axle.Refractor 1 has a linear aggregation angle φ who reaches 260 °, and is made up of sheet lens 3 and ring lens 4, and the front of lens 4 matches along the overall diameter with lens 3, and the interior diameter of back edge and reflector 2 matches.The round symmetry axis of the optic axis of lens 3 and lens 4 all coincides with OO ' axle.The optic axis FQ of lens 4 sections is by the focal point F of optical collimator, and the included angle of itself and OO ' between centers is about 60 °-100 °, and intersects with reflector 2.Under the situation at big focusing angle, utilize Fresnel refraction circle 5,6 can reach the material usage that reduces lens 4, circle 5,6 is correspondingly respectively at the anterior of bearing bed inner surface with at the rear portion of outer surface.Reflector 2 is by the prism 7(Fresnel refraction circle of total internal reflection) form.
Lens 3 are as reducing the light launched from F point dispersing with respect to axle.Lens 4 are as being transmitted into light focusing on the lens 4 by the F point to reflector 2.If promptly after by refractor 4, be parallel to by rotating the formed zero-deviation trochoidal surface of FQ axle apart from FQ() around OO ' axle by the light of F point emission, so, the bearing bed of reflector 2 should have a form that contains coning angle for the side surface of the truncated cone of (φ)/2.Reflected refraction circle 7 is the shape of isosceles triangle on cross section, and their base is connected with bearing bed, and the rear surface of bearing bed is the total internal reflection surface of circle 7.Leg-of-mutton side constitutes the incident of circle 7 and the refraction border of outgoing, and is made up of basic angle (φ)/2-δ, and wherein δ is determined the scope of its value by following formula:
N-refractive index in the formula
Inequality (1) left-hand component is pointed out to want to consider on the technology: the moulding section of pressing mold should not have the inclination angle, and promptly the vertical line N on any point on reflector 2 front surfaces should have identical symbol-on OO ' axle be orthographic projection (on the rear surface-be negative projection).The right-hand component of inequality is the result of following requirement, make the angle of the incidence angle of the light that incides circle 7 reflecting boundary greater than total internal reflection.In order to reduce the light radiation loss at the joint of circle 7, the thickness h of suggestion bearing bed is train value down during in φ＜90 °:
h＝ (S)/(4tgγ) 〔1-tgγtg（φ/2-δ）〕 （2）
In the formula: γ=φ/2-δ+arc Sin (Cos(φ-δ))/(n) is the incidence angle of the reflecting boundary of light directive circle 7;
S is the width of circle 7.
As δ → O with when satisfying relational expression (2), the light loss between the adjacent turn 7 is all eliminated.When φ → 90 ° (all do not have light loss under any thickness h situation at bearing bed during and δ → O).And when φ＞90 °, just can not eliminate light loss fully, light loss increases ， And with the increase at φ angle and thickness h is irrelevant.
The bearing bed thickness of refractor 1 is also irrelevant with Fresnel refraction circle 5,6 on optical properties, the mechanical strength that the choosing of thickness only considered optical collimator and the optical filtering character of colored materials.
In order to eliminate the direct difficulty of suppressing in aspect because of the fillet 9 of refraction circle 5,6, circle 5 designs of ring lens 4 front portions (relatively before the FQ axle) are on the inner surface of lens 4 bearing beds, and the circle 6 at lens 4 rear portions then design is gone up outside.The reflected refraction curvature of bearing bed is in the mid point Q of lens 4 reindexing like this in this case, and promptly the vertical section of lens 4 front portions is to the recessed song of focal point F, and the protruding song in rear portion.Vertical line N ' and the N of circle 5 and 6 refractive surfaces " finish one less than (90 °-φ) angle with the axle structure.These are the conditions that must guarantee, from the viewpoint along the compacting of OO ' direction of principal axis, the projection one of these vertical lines on OO ' axle is positive for the vertical line of lens 4 outer surfaces, for then bearing of inner surface.Equally, the middle part for lens 4 also is correct.In other words, work as bottom line, during φ 〉=90 °, the surface of FQ axle and lens 4 be not intersect vertically (as practical application like that), and become greater than (φ-90 °) with the angle of vertical line.
Can make reflected refraction circle 8 in the part that reflector 2 is connected with refractor 1, its vertical section is different with the vertical section of circle 7, because it no longer meets with refractor 1 in order to change radiation direction.
As routine; described optical collimator is placed in the cover glass in the signal lamp or the back of dioptric glass 10; the core of glass 10 can be made the form of collector lens 11; it played supplementary function to lens 3 before the light standard that has the light perforation hole has device, it has covered in the axial hole of the sky of reflector 2 fully.Lens 3 can fully phase out or not have refractive power, and only the light that is mapped on the lens 11 are played filter action.
The luminous flux that is placed on the light source at F point place is divided into two parts, and a part is formed light 12, and its irradiation lens 3 also is changed the directed radiation that (equally also being subjected to the effect of complementary lens 11) becomes to be parallel to OO ' axle.Second portion, the essential part of luminous flux has been formed light 13, and it shines ring lens 4, and lens 4 are folded to the direction that becomes included angle with OO ' axle to light, by reflector 2 light 13 are changed over the axial directed radiation along OO ' again.The fraction luminous flux is formed light 14, and it directly projects on reflected refraction Fig. 8 of reflector 2, and without the effect of refractor 1.
Optical collimator shown in Figure 2 is different with optical collimator shown in Figure 1, and the vertical section of simpler, smooth ring lens 4 is arranged, and the reflector 2 than labyrinth is arranged.Before the anterior 15(optical axis FQ of lens 4) vertical section of plane one convex arranged, and after its rear portion 16(FQ axle) vertical section (protruding slightly to focal point F) of convex surface one planar shaped arranged, in this case, the straight line portion in vertical section almost is parallel to the OO ' axle (also being the compacting axle) of optical collimator, very little casting mold angle δ of parallel deviate degree, about 30 '-60 ', this is in order to guarantee that directly compacting is necessary, vertical line N ' and N on the inside and outside surface of lens 4, and " it is negative with positive that the projection symbol on OO ' axle correspondingly is respectively.Such lens 4 have covered the axial hole of the sky of reflector 2, and lens 4 are as long as adopt very little thickness, and the destruction possibility of directly suppressing so neither almost can be eliminated the reflection blackspot that the light perforation hole of optical collimator causes again fully.With covering the axial hole of the sky of reflector 2 with the confocal sheet collector lens 3 of optical collimator, the diameter of lens 3 equals the diameter in the forward position of lens 4.
Take down Fresnel refraction circle 5,6, make the ring lens 4 that contains width can not be all with collimater with focus, promptly its refractive power is not enough to feasiblely have the reflector 2 of optical relation to make the bearing bed of the simple truncated cone of a little optical dimensions with it.Simultaneously, if owing to reduced the refractive power at lens 4 rear portions 16, and the refraction action of largest portion is concentrated on lens 4 front portions 15, so, the size of reflector 2 can reduce relatively.
If the optic angle φ of lens 4 front portions 15
1Be not more than 15 °-20 °, then this part may with the same focus of collimater, and have the front portion 17 of the reflector 2 of optical relation can make the truncated cone body with it.Included angle=60 of FQ axle and OO ' axle °-70 °.The optic angle φ at lens 4 rear portions 16
2It is 30 °-60 °, its refractive power is (as forward part 15, its thickness by zero refraction point Q to the lens edge attenuate gradually) very little, and there is the vertical section of spill at the rear portion 18 of corresponding reflector 2, and be connected with part 17 with the joining P place of reflector 2 at the FQ axle, for example, its parabolic focus exists
It is the virtual image point that constitutes the focal point F at lens 4 rear portions 16.
The reflector 2 of optical collimator shown in Figure 2 has the reflected refraction multiple-unit prism 19 of radial directed at the bearing bed back side.Fig. 3,4 has represented the shape of the prism 19 on various cross sections.Formed the reflecting boundary 20 of each prism 19 on the right angle in each cross section corner angle 21, the size dimension at the equilateral right angle of total internal reflection is proportional with the distance to OO ' axle.The front surface of corner angle 21 parallel bearing beds makes bearing bed bear the effect on the refraction border of the incident of each prism 19 and reflection simultaneously.Such reflector 2 is favourable, eliminated the light loss in Fresnel reflection, the light 22 of device 2 front surface reflections is with identical by light 23 directions of border 20 reflections of each prism 19 because be reflected, because the filter action that risen of lens 4, light 22 and 23 have common photochromic.
The front surface of optical collimator shown in Figure 2 is smooth, therefore in use allows not settle cover glass.
In two kinds of embodiments of whole compacting optical collimator shown in Fig. 1,2, reflector 2 does not require the minute surface coated, and this is owing to utilized among the catadioptric reflecting element 7(Fig. 1 with total internal reflection) or prism 19(Fig. 2-4 in).
From the viewpoint of stamper mould manufacturing, among annular reflection refracting element 7(Fig. 1) good manufacturability is arranged, and among radial prism 19(Fig. 2-4) guaranteed the slickness of the front surface of higher reflecting properties and reflector 2.
The preparation of optical collimator can be with the method for dichroic materials cast.By with refractor 1(Fig. 1 in) collector lens 3,4 of no optics relation and the convex portions of the optical collimator that reflected refraction ring 8 is formed make of colored materials, satisfies the filter action that is determined by the optical signal color.The concave part of optical collimator exactly is except the reflector 2(ring 8) make by colourless material, under the situation that guarantees signal colour, reduce the light absorption in catadioptric reflector 2 self.
Claims (4)
1, a kind of whole pressed light collimator, the concave reflector (2) that includes a band axial hole, before its axial hole, settle a refractor (1), refractor (1) device (2) that is reflected surrounds and with it optical relation is arranged, simultaneously, vertical line (N) has positive projection on the optical collimator axle on the every bit of reflector (2) front surface, and one negative projection is arranged in the rear surface, it is characterized in that: the part of refractor (1) is made ring-type collector lens (4) at least, its round symmetry axis overlaps with the axle (OO ') of optical collimator, its vertical section optic axis (FQ) intersects with reflector (2) by the focus (F) of optical collimator, in this case, (N ") has positive projection to vertical line on any point on ring lens (4) outer surface on collimater axle (OO '), and vertical line (N ') has negative projection at inner surface.
2, according to the described whole pressed light collimator of claim 1, it is characterized in that: the part of ring lens (4) is made the shape of Fresnel refraction circle (5,6), their distribution, from the direction of reflector (2) own, at the outer surface of lens (4) bearing bed, and see on inner surface from the light perforation hole direction of optical collimator.
3, according to the described whole pressed light collimator of claim 1, it is characterized in that: refractor (1) has been settled one and the confocal sheet collector lens of optical collimator (3) in ring lens (4) front, its diameter equals the diameter in ring lens (4) forward position, simultaneously, convex one planar shaped (focus to optical collimator is protruded) is made at the rear portion (16) in ring lens (4) vertical section (near the part of reflector), and its front portion (15) make plane one convex shape, and the planar section in vertical section and the angle (δ) of optical collimator axle (OO ') are not more than 1 ° simultaneously.
4, according to claim 1,3 described whole pressed light collimator, it is characterized in that: there are bigger refractive power and short length (along collimater axle OO ') in the front portion (15) of ring lens (4) than rear portion (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102670 CN1037573A (en) | 1988-05-09 | 1988-05-09 | Whole pressed light collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102670 CN1037573A (en) | 1988-05-09 | 1988-05-09 | Whole pressed light collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1037573A true CN1037573A (en) | 1989-11-29 |
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ID=4832256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102670 Pending CN1037573A (en) | 1988-05-09 | 1988-05-09 | Whole pressed light collimator |
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| Country | Link |
|---|---|
| CN (1) | CN1037573A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149964A (en) * | 2007-09-06 | 2011-08-10 | 皇家飞利浦电子股份有限公司 | Compact optical system and lenses for prodcuing uniform collimated light |
| CN101737706B (en) * | 2008-11-14 | 2012-02-08 | 雅马哈发动机株式会社 | Lampshade and lamp structure for scooter motor vehicle |
| CN103988110A (en) * | 2011-12-13 | 2014-08-13 | 皇家飞利浦有限公司 | Optical collimator for led lights |
| CN105190397A (en) * | 2013-03-07 | 2015-12-23 | 皇家飞利浦有限公司 | Low-profile optical arrangement |
| US9435515B2 (en) | 2014-01-31 | 2016-09-06 | Energizer Brands, Llc | Near-field lens with convex hyperbolic surface |
| CN107314272A (en) * | 2016-04-26 | 2017-11-03 | 扬升照明股份有限公司 | Spotlight and collector lens |
| US10254521B2 (en) | 2011-12-13 | 2019-04-09 | Signify Holding B.V. | Optical collimator for LED lights |
| WO2020103499A1 (en) * | 2018-11-20 | 2020-05-28 | 常州星宇车灯股份有限公司 | Total-reflective thick-wall condenser and lighting device |
| CN114026362A (en) * | 2019-06-28 | 2022-02-08 | 昕诺飞控股有限公司 | Two-stage optics for LED devices |
-
1988
- 1988-05-09 CN CN 88102670 patent/CN1037573A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149964A (en) * | 2007-09-06 | 2011-08-10 | 皇家飞利浦电子股份有限公司 | Compact optical system and lenses for prodcuing uniform collimated light |
| CN102149964B (en) * | 2007-09-06 | 2013-07-17 | 皇家飞利浦电子股份有限公司 | Compact optical system and lenses for prodcuing uniform collimated light |
| CN101737706B (en) * | 2008-11-14 | 2012-02-08 | 雅马哈发动机株式会社 | Lampshade and lamp structure for scooter motor vehicle |
| CN103988110A (en) * | 2011-12-13 | 2014-08-13 | 皇家飞利浦有限公司 | Optical collimator for led lights |
| CN103988110B (en) * | 2011-12-13 | 2018-09-28 | 飞利浦照明控股有限公司 | Optics collimator for LED light |
| US10254521B2 (en) | 2011-12-13 | 2019-04-09 | Signify Holding B.V. | Optical collimator for LED lights |
| CN105190397A (en) * | 2013-03-07 | 2015-12-23 | 皇家飞利浦有限公司 | Low-profile optical arrangement |
| US9435515B2 (en) | 2014-01-31 | 2016-09-06 | Energizer Brands, Llc | Near-field lens with convex hyperbolic surface |
| CN107314272A (en) * | 2016-04-26 | 2017-11-03 | 扬升照明股份有限公司 | Spotlight and collector lens |
| WO2020103499A1 (en) * | 2018-11-20 | 2020-05-28 | 常州星宇车灯股份有限公司 | Total-reflective thick-wall condenser and lighting device |
| CN114026362A (en) * | 2019-06-28 | 2022-02-08 | 昕诺飞控股有限公司 | Two-stage optics for LED devices |
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