CN109404785A - A kind of source of parallel light - Google Patents
A kind of source of parallel light Download PDFInfo
- Publication number
- CN109404785A CN109404785A CN201811399042.1A CN201811399042A CN109404785A CN 109404785 A CN109404785 A CN 109404785A CN 201811399042 A CN201811399042 A CN 201811399042A CN 109404785 A CN109404785 A CN 109404785A
- Authority
- CN
- China
- Prior art keywords
- light
- lens
- source
- concave
- parallel light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/08—Optical design with elliptical curvature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention discloses a kind of sources of parallel light, and including light source and the optical collector being located on light source, the inner wall of the optical collector forms the reflecting surface for being used for reflected light；It further include the barn door and lens group, the lens group being sequentially arranged except the optical collector and along optical circuit path include the biconvex spherical lens for converting non-parallel light to directional light；The light pipe with optical circuit path coaxial arrangement is fixed on the barn door, and the axle center of barn door is provided with through barn door and the through-hole that is connected with the entrance of light pipe, light only passes through the entrance and enters in light pipe；The border overlay of the reflecting surface and preset spheroid, the spheroid is using the entrance of the light source and light pipe as focus.The present invention can effectively promote the uniformity of light source.Meanwhile balsaming lens can eliminate light source aberration, and field of view edge can be kept clear, sharp keen.
Description
Technical field
The present invention relates to the one of vision-based detection and radiographic measurement technical field, especially vision-based detection and image measurer
Kind source of parallel light.
Background technique
Directional light is also known as direction light (Directional Light), is one group of parallel light that do not decay, is regarding
Feel in detection and image measurer technical field, source of parallel light has its unique application mode, thus use is extremely extensive.It is existing
In technology, source of parallel light is all to add convex lens to be made into a point light source, and point light source is located at the focal point of convex lens, utilizes convex lens
The refraction principle of mirror generates directional light.This directional light does not have any treatment measures, leads to that light source uniformity is poor, is difficult to remove picture
Poor and field of view edge is not clear enough, sharp keen.
Summary of the invention
The present invention provides a kind of source of parallel light, and the parallel light effect for solving the problems, such as that existing source of parallel light generates is poor.
The present invention provides a kind of source of parallel light, including light source and the optical collector being located on light source, the optical collector
Inner wall forms the reflecting surface for being used for reflected light；Further include the barn door being sequentially arranged except the optical collector and along optical circuit path and
Lens group, the lens group include the biconvex spherical lens for converting non-parallel light to directional light；It is solid on the barn door
Surely have with optical circuit path coaxial arrangement light pipe, and the axle center of barn door be provided with through barn door and with the entrance of light pipe
The through-hole being connected, light only pass through the entrance and enter in light pipe；The boundary of the reflecting surface and preset spheroid
Overlapping, the spheroid is using the entrance of the light source and light pipe as focus.
Preferably, the lens group includes the first balsaming lens and the second balsaming lens being sequentially arranged along optical circuit path,
Second balsaming lens includes the biconvex spherical lens.
Preferably, first balsaming lens includes the first concave-convex aspheric lens and second being sequentially arranged along optical circuit path
Concave-convex aspheric lens, the convex surface of first concave-convex aspheric lens and the concave surface of the second concave-convex aspheric lens are glued.
Preferably, second balsaming lens further includes plano-concave lens, and the plano-concave lens and biconvex spherical lens are along light
Road path is sequentially arranged and the concave surface of plano-concave lens and the convex surface of biconvex spherical lens are glued.
Preferably, the light pipe is in cone, and the radius of light pipe is sequentially increased along optical circuit path.
Preferably, the optical collector is elliposoidal and is equipped with opening at the both ends of optical collector.
Preferably, the light source is arranged in opening of the optical collector far from barn door one end.
Preferably, reflective mirror is additionally provided between first balsaming lens and the second balsaming lens, the first balsaming lens
It is axial and the second balsaming lens to be axially formed predetermined angle.
Preferably, the predetermined angle is 90 degree.
Preferably, the light source is LED light source.
In the present invention, optical collector concentrates the light of light source, can increase overall brightness, barn door can block scattering
Light passes through light only from light pipe, and light pipe makes light evenly dispersed again, has good even light effect, Ke Yiyou
Effect promotes the uniformity of light source.
Meanwhile two groups of balsaming lens are additionally arranged, balsaming lens can eliminate light source aberration, and field of view edge can be kept clear
It is clear, sharp keen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the source of parallel light of an embodiment of the present invention；
Fig. 2 is the image using the source of parallel light of an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the source of parallel light of another embodiment of the present invention.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.
The embodiment of the present invention provides a kind of source of parallel light, as shown in Figure 1 comprising light source 1 and is located on light source 1
Optical collector 2, light source 1 can use LED light source, have many advantages, such as that the service life is long, stability is high, optical collector 2 can be in it is hood-like, by light
Source 1 is located inside.The inner wall of optical collector 2 forms reflecting surface, can be made of the material of high reflectance, and the one of optical collector 2
End forms a light-emitting window 20, and light 100 is concentrated under the reflection of reflecting surface to be collected and project from light-emitting window 20.Source of parallel light is also
Including the barn door 3 for being located at except optical collector 2 and being sequentially arranged along optical circuit path and lens group, the lens group includes for will
Non-parallel light is converted into the biconvex spherical lens 52 of directional light.The shaft core position of the barn door 3 is fixed with same with optical circuit path
The light pipe 31 of axis setting, i.e. the axial direction of light pipe 31 and optical circuit path is coaxial, and the entrance of light pipe 31 goes out towards light source 1
Mouthful towards lens group.The axle center of barn door 3 is provided with the through-hole through barn door 3, passes through light 100 from through-hole.Light pipe
31 caliber may be configured as matching with the aperture of through-hole, and through-hole is connected with the entrance of light pipe 31, then light 100 only passes through
The entrance enters in light pipe 31, and the light of other positions is then blocked.Wherein, one end of 31 entrance of light pipe can insert
Enter into through-hole or one end of 31 entrance of light pipe is fixed on the lateral surface of barn door 3 and docks with through-hole.
The border overlay of the reflecting surface of optical collector 2 and preset spheroid, then reflecting surface can be the one of spheroid boundary
Part, but must match with the boundary shape of spheroid.Wherein, the spheroid needs to meet respectively with 1 He of light source
The entrance of light pipe 31 is two focuses, and the entrance of light pipe 31 will be pooled to by the light of reflective surface.
The specific working principle is as follows for a kind of source of parallel light of the present embodiment: light source 1 shines, and generates light 100, light
100 collect by the reflection of optical collector 2, project from light-emitting window 20, this concentration collects the brightness that light 100 can be enhanced.
The position where light-emitting window 20 is arranged in barn door 3, so that the light of scattering is blocked, the light of reflection will be pooled to light pipe
31 entrance.Light 100 is evenly dispersed in light pipe 31, is had good even light effect, can effectively be promoted light source
Uniformity.The light 100 projected from light pipe 31 further passes through lens group, includes biconvex spherical lens 52, warp in lens group
The tapered radiation of light of the injection of light pipe 31 is crossed, biconvex spherical lens 52 then converts the light of cone cell to parallel light,
To generate directional light.
In one embodiment, the lens group specifically includes 4 He of the first balsaming lens being sequentially arranged along optical circuit path
Second balsaming lens 5, the first balsaming lens 4 and the second balsaming lens 5 can be formed by multi-disc lens gluing, wherein described
Second balsaming lens 5 includes the biconvex spherical lens 52.
Specifically, first balsaming lens 4 includes 41 He of the first concave-convex aspheric lens being sequentially arranged along optical circuit path
Second concave-convex aspheric lens 42, for the first concave-convex aspheric lens 41 close to light pipe 31, the second concave-convex aspheric lens 42 are then relatively remote
From light pipe 31.First concave-convex aspheric lens 41 and the second concave-convex aspheric lens 42 include a convex surface and a concave surface, institute
The concave surface on the convex surface and the second concave-convex aspheric lens 42 of stating the first concave-convex aspheric lens 41 is glued, can play and field range contracts
Small effect, and eliminate the aberration in light source.
Second balsaming lens 5 further includes plano-concave lens 51, and the plano-concave lens 51 and biconvex spherical lens 52 are along light
Road path is sequentially arranged, plano-concave lens 51 include a plane and a concave surface, relatively close first balsaming lens 4 of plane,
Its concave surface is relatively distant from the first balsaming lens 4.And the concave surface of plano-concave lens 51 and the convex surface of biconvex spherical lens 52 are glued.It is above-mentioned
Balsaming lens can effectively eliminate the aberration in light source, and field of view edge can be kept clear, sharp keen.
In one embodiment, the light pipe 31 is in cone, and the radius of light pipe 31 successively increases along optical circuit path
Greatly.Based on optical total-reflection principle, the light pipe 31 of conical structure is more advantageous to the dispersion of light, keeps light more uniform,
Light is integrally tapered to be scattered out.
In one embodiment, the optical collector 2 is elliposoidal and is equipped with opening, position in figure at the both ends of optical collector 2
Opening in right side is light-emitting window 20.Reflectorized material can be coated on the inner wall of optical collector 2, so that 2 inner wall of optical collector has height
Reflectivity, the light that light source 1 scatters collect by the reflection of optical collector 2, and the entrance of final directive light pipe 31 collects light more
In, to increase brightness.
Wherein, the light source 1 may be provided in opening of the optical collector 2 far from 3 one end of barn door, make light mainly towards out
20 1 side of optical port irradiation, positioned at 2 rear of optical collector light without using.
Fig. 2 illustrates the image of the source of parallel light of the present embodiment, is circular view field imaging figure on the left of Fig. 2, right side is
Radiant illumination distribution map, radiant illumination have reacted the intensity of illumination of light each position in field range, it can be seen from the figure that
Radiant illumination maintains essentially near 3162 this numerical value, and the radiant illumination relative equilibrium of each position embodies the uniform of light source
Property.It can be seen that the aberration very little of light source almost keeps same coloration from the view field imaging figure in left side, and visual field shape maintains just
It is clear, sharp keen to maintain field of view edge for circle.
The embodiment of the present invention also provides a kind of source of parallel light, as shown in figure 3, on the basis of the above embodiments, this implementation
Example further comprises reflective mirror 6, and reflective mirror 6 reflects light 100, and reflective mirror 6 is specifically located at first balsaming lens 4
And on the second optical circuit path between balsaming lens 5, the light projected from the first balsaming lens 4 passes through the transmitting of reflective mirror 6, then
Across the second balsaming lens 5.The axial direction of first balsaming lens 4 and the second balsaming lens 5 are axially formed predetermined angle, so that most
The directional light projected eventually is not coaxial with the first balsaming lens 4 and light pipe 31, by adjusting reflective mirror 6 and the second balsaming lens 5
Position, project directional light can with multi-angle, with facilitate actual use.
Wherein, the predetermined angle can be 90 degree, and the axial direction of reflective mirror 6 and the first balsaming lens 4 is in 45 degree of angles at this time,
The axial direction of first balsaming lens 4 and the axial direction of the second balsaming lens 5 are perpendicular to one another.
The above content is specific embodiment is combined, further detailed description of the invention, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made.
Claims (10)
1. a kind of source of parallel light, it is characterised in that:
Including light source and the optical collector being located on light source, the inner wall of the optical collector forms the reflecting surface for being used for reflected light；
It further include the barn door being sequentially arranged except the optical collector and along optical circuit path and lens group, the lens group includes for will
Non-parallel light is converted into the biconvex spherical lens of directional light；The leaded light with optical circuit path coaxial arrangement is fixed on the barn door
Pipe, and the axle center of barn door is provided with through barn door and the through-hole that is connected with the entrance of light pipe, light only passes through described
Entrance enters in light pipe；The border overlay of the reflecting surface and preset spheroid, the spheroid with the light source and
The entrance of light pipe is focus.
2. source of parallel light according to claim 1, it is characterised in that:
The lens group includes the first balsaming lens and the second balsaming lens being sequentially arranged along optical circuit path, and described second is glued
Lens include the biconvex spherical lens.
3. source of parallel light according to claim 2, it is characterised in that:
First balsaming lens includes that the first concave-convex aspheric lens being sequentially arranged along optical circuit path and the second concave-convex spherical surface are saturating
Mirror, the convex surface of first concave-convex aspheric lens and the concave surface of the second concave-convex aspheric lens are glued.
4. source of parallel light according to claim 2, it is characterised in that:
Second balsaming lens further includes plano-concave lens, and the plano-concave lens and biconvex spherical lens are sequentially set along optical circuit path
It sets and the concave surface of plano-concave lens and the convex surface of biconvex spherical lens is glued.
5. source of parallel light according to claim 1-4, it is characterised in that:
The light pipe is in cone, and the radius of light pipe is sequentially increased along optical circuit path.
6. source of parallel light according to claim 1-4, it is characterised in that:
The optical collector is elliposoidal and is equipped with opening at the both ends of optical collector.
7. source of parallel light according to claim 6, it is characterised in that:
The light source is arranged in opening of the optical collector far from barn door one end.
8. source of parallel light according to claim 1-4, it is characterised in that:
Reflective mirror, the axial direction of the first balsaming lens and the second glue are additionally provided between first balsaming lens and the second balsaming lens
That closes lens is axially formed predetermined angle.
9. source of parallel light according to claim 8, it is characterised in that:
The predetermined angle is 90 degree.
10. source of parallel light according to claim 1-4, it is characterised in that:
The light source is LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811399042.1A CN109404785A (en) | 2018-11-22 | 2018-11-22 | A kind of source of parallel light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811399042.1A CN109404785A (en) | 2018-11-22 | 2018-11-22 | A kind of source of parallel light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404785A true CN109404785A (en) | 2019-03-01 |
Family
ID=65474745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811399042.1A Pending CN109404785A (en) | 2018-11-22 | 2018-11-22 | A kind of source of parallel light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404785A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613689A (en) * | 2018-12-24 | 2019-04-12 | 珠海博明软件有限公司 | A kind of telecentricity source of parallel light |
| CN112604923A (en) * | 2020-12-31 | 2021-04-06 | 信利(仁寿)高端显示科技有限公司 | Method and equipment for improving illumination uniformity of UV curing equipment in ODF (optical Density filter) manufacturing process |
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| CN209386077U (en) * | 2018-11-22 | 2019-09-13 | 珠海博明软件有限公司 | A kind of source of parallel light |
| CN216595711U (en) * | 2021-12-16 | 2022-05-24 | 成都翱图智能科技有限公司 | Large-view-field multi-magnification double-telecentric lens for 3D measurement |
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| CN112604923A (en) * | 2020-12-31 | 2021-04-06 | 信利(仁寿)高端显示科技有限公司 | Method and equipment for improving illumination uniformity of UV curing equipment in ODF (optical Density filter) manufacturing process |
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