EP3034934A1 - Ensemble optique non linéaire d'avertissement lumineux - Google Patents

Ensemble optique non linéaire d'avertissement lumineux Download PDF

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Publication number
EP3034934A1
EP3034934A1 EP14198115.9A EP14198115A EP3034934A1 EP 3034934 A1 EP3034934 A1 EP 3034934A1 EP 14198115 A EP14198115 A EP 14198115A EP 3034934 A1 EP3034934 A1 EP 3034934A1
Authority
EP
European Patent Office
Prior art keywords
light
base
nonlinear optical
optical assembly
light entry
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.)
Granted
Application number
EP14198115.9A
Other languages
German (de)
English (en)
Other versions
EP3034934B1 (fr
Inventor
Neng-Chen Yeh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Many Wain Enterprise Co Ltd
Original Assignee
Many Wain Enterprise Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Many Wain Enterprise Co Ltd filed Critical Many Wain Enterprise Co Ltd
Priority to EP14198115.9A priority Critical patent/EP3034934B1/fr
Publication of EP3034934A1 publication Critical patent/EP3034934A1/fr
Application granted granted Critical
Publication of EP3034934B1 publication Critical patent/EP3034934B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
    • 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
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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]

Definitions

  • the present invention relates to an optical assembly, and, more particularly, to a nonlinear optical assembly of an alert light.
  • LED light-emitting diode
  • the conventional LED alert light includes an LED module and an optical lens module.
  • the optical lens module is integrally formed with multiple lens units.
  • the lens units are sequentially aligned in the form of a straight line. A light entrance end of each lens unit corresponds to an LED of the LED module to thereby constitute an LED alert light.
  • the optical lens module of the conventional LED alert light employs multiple integrally-formed lens units, and under the constraint of forming technique, each lens unit of the optical lens module takes the form of a cone with a cone apex angle approximately at 120 degrees.
  • the conical shape of the lens units makes the integrally-formed optical lens module inflexible for significant changes and hard to adapt to the requirements of different forms of light projection.
  • conventional alert lights can be designed to provide single-side straight-line light projection but fail to provide arced, wavy or annular light projection in response to the demand of diversified alert lights.
  • An objective of the present invention is to provide an optical assembly of an alert light for solving the problems of conventional nonlinear alert lights, that is, optical lens elements are hard to adapt to variations of different light forms, such as arcuate, annular and wavy forms, because of their integrally-formed structure.
  • the nonlinear optical assembly of an alert light has two nonlinear optical halves obtained by symmetrically dividing the nonlinear optical assembly along an optical reference plane.
  • Each nonlinear optical half has a base, a light entrance portion and a light exit portion.
  • the base is integrally formed and takes a nonlinear and curved form.
  • One side of the base corresponding to the optical reference plane has a junction surface, and the two optical halves are assembled to form the nonlinear optical assembly with the junction surfaces of the two nonlinear optical halves attached to each other.
  • the light entrance portion is formed on one side of the base and adjoins the junction surface.
  • the light exit portion is formed on another side of the base and adjoins the junction surface.
  • the light entrance portion of the base corresponds to an inner circumferential end surface of the base
  • the light exit portion of the base corresponds to an outer circumferential end portion of the base
  • the base of each optical half takes an annular form and has multiple light entry recesses, an outer flange, an inner bevel wall and multiple bulged projection portions.
  • the multiple light entry recesses are annularly formed in the light entrance portion and are mutually spaced apart by gaps.
  • Each light entry recess takes the form of an arcuate indentation.
  • the outer flange annularly is formed on and protrudes outwards from the junction surface in a direction vertical to and away from the junction surface.
  • the inner bevel wall is annularly formed on and protrudes inwards from an inner wall of the outer flange, and reduces in thickness in a direction from the outer flange to the light entry recesses.
  • the multiple bulged projection portions are juxtaposedly formed around the light exit portion.
  • Each bulged projection portion has an arcuate profile.
  • Each light entry recess corresponds to a number of bulged projection portions adjacent to the light entry recess.
  • the base has multiple half LED (Light-emitting Diode) cases and multiple outer raised portions.
  • LED Light-emitting Diode
  • the multiple half LED cases are juxtaposedly arranged along an arc on the light entrance portion.
  • Each half LED case is formed in the light entrance portion, and takes the form of a semicircular cone with diameters of cross sections of the half LED case perpendicular to the junction plane progressively increasing in a direction from the light entrance portion to the light exit portion, and has a light entry recess formed in a portion of the light entrance portion corresponding to the half LED case.
  • Each bulged projection portion has an arcuate profile.
  • Each light entry recess corresponds to a number of bulged projection portions adjacent to the light entry recess.
  • the nonlinear optical assembly can be symmetrically divided into two separate optical halves along an optical reference plane.
  • the divided nonlinear optical halves are structurally simplified and therefore facilitate the molding thereof in production and the quality control of the finished product.
  • different light form, light projection angle or product shape can be varied according to desired alert feature to make structural changes to the optical assembly on its entirety.
  • light emitted from an alert light having the optical assembly passes through a center line of the light exit portion, thereby generating a uniform light effect.
  • the nonlinear optical assembly further provides a number of outer raised portions to correspond to each light entry recess.
  • light emitted from each light source can be projected out through those outer raised portions.
  • the projected light luminance can still be uniform, making the foregoing feature more ideal to applications of the nonlinear optical assembly.
  • Fig. 15 is an enlarged cross-sectional view of two combined optical assemblies in Fig. 14 .
  • FIG. 1 , 2 , 7 and 11 four embodiments of a nonlinear optical assembly of an alert light in accordance with the present invention are shown and have common features as follows.
  • Each of the embodiments of the optical assembly 1 of an alert light has two separate nonlinear optical halves 10A, 10B.
  • Each embodiment of the optical assembly has a specific form.
  • the nonlinear optical halves 10A, 10B are obtained by symmetrically dividing the nonlinear optical assembly 1 along an optical reference plane 'P' as shown in Fig. 3 .
  • the optical reference plane corresponds to a virtual plane defined by center points of multiple light-emitting diodes (LEDs) in an LED module of the alert light.
  • LEDs light-emitting diodes
  • Each nonlinear optical half 10A, 10B has a base 11, a light entrance portion 12 and a light exit portion 13.
  • the base 11 takes a nonlinear and curved form and is integrally formed.
  • One side of the base 11 corresponding to the optical reference plane has a junction surface 112.
  • the light entrance portion 12 is formed on one side of the base 11 and adjoins the junction surface 112.
  • the light exit portion 13 is formed on another side of the base 11, adjoins the junction surface 112, and is opposite to the light entrance portion 12.
  • the two optical halves 10A, 10B are made of a transparent material, which may be glass, polymethylmethacrylate (PMMA), and the like.
  • the optical halves 10A, 10B respectively have at least one first jointing member 14 and at least one second jointing member 15 respectively formed on at least one position on the base 11 of the optical halve 10A and on at least one position on the base 11 of the optical halve 10B.
  • the first jointing member 14 and the second jointing member 15 are respectively a raised portion and a recessed portion matching each other.
  • the two optical halves 10A, 10B are assembled together by correspondingly engaging the at least one first jointing member 14 and the at least one second jointing member 15 with the junction surfaces of the two optical halves 10A, 10B attached to each other for forming the nonlinear optical assembly 1.
  • a first embodiment of a nonlinear optical assembly 1 in accordance with the present invention takes a wavy and elongated form and has two nonlinear optical halves 10A, 10B.
  • the base 11 has multiple light entry recesses 121 formed in the light entrance portion 12 and spaced apart from each other by gaps.
  • Each light entry recess 121 takes the form of a semi-cylindrical hole, and has a semicircular opening 123 and a quadra-spherical lens portion 122.
  • the semicircular opening 123 corresponds to an inner opening of the light entry recess 121.
  • the quadra-spherical lens portion 122 is formed on an inner wall of the light entry recess 121 opposite to the semicircular opening 123.
  • the light exit portion 13 has multiple bumps 132 juxtaposedly formed on the light exit portion 13 in a wavy manner, and each bump 132 has an arcuate profile, protrudes outwards from the light exit portion 13, and is aligned with one of the multiple light entry recesses 121.
  • each optical half 10A, 10B takes an annular form.
  • the light entrance portion 12 of the base 11 corresponds to an inner circumferential end surface of the base 11, and has multiple light entry recesses 121.
  • the multiple light entry recesses 121 are annularly formed in the light entrance portion 12 and are mutually spaced apart by gaps.
  • Each light entry recess 121 takes the form of an arcuate indentation.
  • the light exit portion 13 of the base 11 corresponds to an outer circumferential end surface of the base 11, and has an outer raised portion 133.
  • the outer raised portion 134 is annularly formed around a portion of the light exit portion 13 and is adjacent to the junction surface 112 of the base 11.
  • the base 11 further has an outer flange 113 and an inner bevel wall 114.
  • the outer flange 113 is annularly formed on and protrudes outwards from the outer raised portion 133 in a direction vertical to and away from the junction surface 112.
  • the inner bevel wall 114 is annularly formed on and protrudes inwards from an inner wall of the outer flange 113, and reduces in thickness in a direction from the outer flange 113 to the light entry recesses 121.
  • the outer flange 113 can function as a light-exiting portion of the light exit portion 13, and the inner end of the inner bevel wall 114 can function as a light entry portion of the light entrance portion 12.
  • the two nonlinear optical halves 10A, 10B of a nonlinear optical assembly in the present embodiment respectively have a lateral pin 16 and a lateral hole 17 respectively formed on and formed in two outer edges of the outer flanges 113 of the optical halves 10A, 10B that are opposite to the junction surface 112.
  • the lateral pin 16 and the lateral hole 17 are used for assembling the nonlinear optical assembly and a lamp holder 2 of the alert light together.
  • the lateral pins 16 and the lateral holes 17 of the bases 11 of the nonlinear optical assemblies 1 can be used to assemble the nonlinear optical assemblies 1 and the lamp holder 2 together.
  • the nonlinear optical assembly that is combined by assembling the two nonlinear optical halves 10A, 10B together is mounted inside the lamp holder 2.
  • the light exit portion 13 of the optical assembly is exposed to an ambient environment.
  • An LED module 3 is mounted inside the lamp holder 2 and is located inside the optical assembly.
  • Each LED 30 of the LED module 3 corresponds to the light entrance portions 12 of the two corresponding optical halves 10A, 10B.
  • An annular alert light can be thus assembled.
  • a third embodiment of a nonlinear optical assembly 1 of an alert light in accordance with the present invention differs from the second embodiment in that instead of the outer raised portion 133 in the second embodiment, the present embodiment has multiple bulged projection portions 131 juxtaposedly formed around the light exit portion 13.
  • Each bulged projection portion 131 has an arcuate profile.
  • Each light entry recess 121 corresponds to a number of bulged projection portions 131 adjacent to the light entry recess 121, such that light that is emitted from each LED 30 and propagates through the nonlinear optical assembly 1 will pass through corresponding bulged projection portions 131.
  • each bulged projection portion 131 Due to the arcuate profile of each bulged projection portion 131, light passing through the bulged projection portions 131 is projected to different directions. Accordingly, luminance of light projected through the entire light exit portion 13 of the nonlinear optical assembly 1 can be roughly the same and uniform luminance of the alert light can be ensured.
  • a fourth embodiment of a nonlinear optical assembly 1 of an alert light in accordance with the present invention takes an arcuate and elongated form.
  • the base 11 is integrally formed and has multiple half LED cases 111.
  • the half LED cases 111 are juxtaposedly arranged along an arc on the light entrance portion 12.
  • Each half LED case 111 is formed in the light entrance portion 12, and takes the form of a semicircular cone with diameters of cross sections of the half LED case 111 perpendicular to the junction plane 112 progressively increasing in a direction from the light entrance portion 12 to the light exit portion 13.
  • Each half LED case 111 has a light entry recess 121 formed in a portion of the light entrance portion 12 corresponding to the half LED case 111.
  • the light exit portion 13 has multiple bulged projection portions 131 juxtaposedly and arcuately formed on the light exit portion 13.
  • Each bulged projection portion 131 has an arcuate profile.
  • Each light entry recess 121 corresponds to a number of bulged projection portions 131 adjacent to the light entry recess 121, such that light that is emitted from each LED 30 and propagates through the nonlinear optical assembly 1 will pass through corresponding bulged projection portions 131. Due to the arcuate profile of each bulged projection portion 131, light passing through the bulged projection portions 131 is projected to different directions. Accordingly, luminance of light projected through the entire light exit portion 13 of the nonlinear optical assembly 1 can be roughly the same and uniform luminance of the alert light can be ensured. With further reference to Figs. 13 to 15 , multiple nonlinear optical assemblies in the present embodiment are applied to an alert light.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Couplings Of Light Guides (AREA)
EP14198115.9A 2014-12-16 2014-12-16 Ensemble optique non linéaire d'avertissement lumineux Not-in-force EP3034934B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14198115.9A EP3034934B1 (fr) 2014-12-16 2014-12-16 Ensemble optique non linéaire d'avertissement lumineux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14198115.9A EP3034934B1 (fr) 2014-12-16 2014-12-16 Ensemble optique non linéaire d'avertissement lumineux

Publications (2)

Publication Number Publication Date
EP3034934A1 true EP3034934A1 (fr) 2016-06-22
EP3034934B1 EP3034934B1 (fr) 2017-07-19

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Application Number Title Priority Date Filing Date
EP14198115.9A Not-in-force EP3034934B1 (fr) 2014-12-16 2014-12-16 Ensemble optique non linéaire d'avertissement lumineux

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB672705A (en) * 1949-05-20 1952-05-28 Holophane Ltd Improvements in the manufacture of bowl-type refractors
US20050024744A1 (en) * 2003-07-29 2005-02-03 Light Prescriptions Innovators, Llc Circumferentially emitting luminaires and lens-elements formed by transverse-axis profile-sweeps
EP1761726A1 (fr) * 2004-06-22 2007-03-14 Klaus Kolb Lanterne pour mettre un signal d'alarme de manière circulaire
US20090016069A1 (en) * 2006-11-01 2009-01-15 Mcdermott Kevin Broad beam light

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB672705A (en) * 1949-05-20 1952-05-28 Holophane Ltd Improvements in the manufacture of bowl-type refractors
US20050024744A1 (en) * 2003-07-29 2005-02-03 Light Prescriptions Innovators, Llc Circumferentially emitting luminaires and lens-elements formed by transverse-axis profile-sweeps
EP1761726A1 (fr) * 2004-06-22 2007-03-14 Klaus Kolb Lanterne pour mettre un signal d'alarme de manière circulaire
US20090016069A1 (en) * 2006-11-01 2009-01-15 Mcdermott Kevin Broad beam light

Also Published As

Publication number Publication date
EP3034934B1 (fr) 2017-07-19

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