US20060013011A1 - Glare prevention feature - Google Patents
Glare prevention feature Download PDFInfo
- Publication number
- US20060013011A1 US20060013011A1 US11/228,716 US22871605A US2006013011A1 US 20060013011 A1 US20060013011 A1 US 20060013011A1 US 22871605 A US22871605 A US 22871605A US 2006013011 A1 US2006013011 A1 US 2006013011A1
- Authority
- US
- United States
- Prior art keywords
- reflector
- glare
- glare prevention
- prevention feature
- sink
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3835—Designing moulds, e.g. using CAD-CAM
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
-
- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0083—Reflectors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The subject invention relates to an automotive front lamp assembly with a reflector and a light source and relates to a manufacturing defect that causes a substantial amount of glare when light from the light source strikes it. The subject invention utilizes at least one glare prevention to cover or prevent the formation of the sink. In an exemplary embodiment, the glare prevention feature comprises a rib or half-sphere with a convex surface that has a sharp radius. The convex surface spreads out the light that reflects off it over a large area in order to prevent glare. In another embodiment of the subject invention, the glare prevention feature comprises a rib with a substantially perpendicular surface and an angled or curved surface. This embodiment prevents glare by redirecting most of the light that strikes its surfaces so that it is not emitted out of the front lamp assembly.
Description
- The present application is a divisional application of U.S. patent application Ser. No. 10/633,900 filed Aug. 4, 2003.
- Automotive forward lamp assemblies have been modified over the years to decrease the overall mass of the assemblies in order to increase the safety and the gas mileage of automobiles. Most conventional automotive forward lamp assemblies require a large amount of mass concentration at the front of the vehicle. For example, a typical headlamp and fog lamp assembly will comprise a housing with a reflector, at least one filament bulb, a plurality of electrical wires and a lens. This construction results in a large mass concentration located at the front of the vehicle. In the event of a vehicular accident, a large mass concentration at the front of the vehicle is undesirable because it can result in increased damage and increased injuries. This is especially problematic in the event an automobile collides with a pedestrian.
- In an effort to reduce the mass of automotive front lighting systems, designers have begun using thermoplastic materials to construct the reflector for headlamp and fog lamp assemblies. Thermoplastic reflectors have the advantage of having less mass than other types of reflectors. Thus, thermoplastic reflectors reduce the overall weight of the lamp assembly. Unfortunately, thermoplastic materials have the drawback of creating manufacturing defects in the form of sinks. As used herein, the term “sink” is used to describe a manufacturing defect located on the reflector that forms a pit in the reflector (i.e. an indentation, a recess and/or a concave surface). A sink causes a large amount of glare to be emitted from the lamp assembly because the defect reflects light in such a manner that a large amount of light is concentrated over a small angle when light reflects from the sink. Concentration of light over a small angle can result in unwanted glare or bright spots in the beam pattern. Thus, sinks are detrimental to the optical performance of an automotive lamp assembly because they cause the lamp assembly to emit a large amount of glare. Sinks occur frequently in the manufacturing of headlamp reflectors because of the thick sections required to form the reflector. For example, a sink normally forms around the socket hole of the reflector. While this is an example of a normal location of a sink, sinks of all shapes and sizes are also prone to appear in other portions of the reflector. In order to use thermoplastic reflectors to manufacture headlamp assemblies, designers of headlamp assemblies are faced with overcoming the glare problems associated with sinks.
- Accordingly, it is desirable to have an automotive forward lamp assembly that would allow for the use of a thermoplastic reflector without having the large amount of glare resulting from a sink in the thermoplastic reflector. Specifically, it is desirable to develop a design feature that can eliminate the optical problems caused by sinks on thermoplastic reflectors.
- In order to prevent a sink from forming on a reflector, one exemplary embodiment of the subject invention comprises a automotive front lamp assembly with a reflector that has at least one glare prevention feature where normally a sink would form. The glare prevention feature of this embodiment comprises a convex reflective surface that has a relatively sharp radius. The term “sharp radius” defines a convex surface with a relatively small radius such that the convex surface forms an arc that adequately disperses light. While light from a concave reflective surface, as is common with the sinks discussed herein, will tend to concentrate along a particular axis, light reflected from a convex reflective surface will tend to dissipate in different directions. The convex surface can be a convex rib with a sharp radius or a half-sphere with a sharp radius. The sharp radii of these two embodiments allow these two glare prevention features to spread out the light that strikes its surface over a large area in order to prevent glare from being emitted from the lamp assembly. In another embodiment of the subject invention, the glare prevention feature comprises a rib with a substantially perpendicular surface and an angled or curved surface. This embodiment prevents glare by redirecting most of the light that strikes its surfaces so that it is not emitted out of the front lamp assembly.
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FIG. 1 is an exploded front view of an exemplary headlamp assembly of the subject invention; -
FIG. 2 is a cross-sectional view of the reflector of the exemplary headlamp assembly ofFIG. 1 along line A-A; -
FIG. 3 is a cross-sectional view of the reflector of the exemplary headlamp assembly ofFIG. 1 along line C-C without the glare prevention feature; -
FIG. 4 is a cross-sectional view of the reflector of the exemplary headlamp assembly ofFIG. 1 along line C-C with the glare prevention feature; -
FIG. 5 is a front view of a reflector of an exemplary fog lamp assembly of the subject invention without a lens and without a light source; -
FIG. 6 is a cross-sectional view of the reflector ofFIG. 5 along line B-B; -
FIG. 7 is a front view of another exemplary embodiment of the subject invention without a lens and a light source; -
FIG. 8 is a front view of another exemplary embodiment of the subject invention without a lens and a light source; -
FIG. 9 is a cross-sectional view of the glare prevention feature along line D-D ofFIG. 8 ; -
FIG. 10 is a front view of another exemplary embodiment of the subject invention without a lens and a light source; and -
FIG. 11 is a cross-sectional view of the glare prevention feature along line E-E ofFIG. 10 . -
FIG. 1 shows an exploded view of an exemplary embodiment of an automotive lamp assembly that utilizes a glare prevention feature. As shown inFIG. 1 , the exemplary embodiment comprises automotivefront lamp assembly 45.Front lamp assembly 45 comprises alens 20 connected to alamp housing 25 by means well known in the art. For example, an adhesive/sealant can be placed on eitherlamp housing 25 orlens 20 in order to join them together.Lamp housing 25 contains areflector 50. In this embodiment,reflector 50 comprises a thermoplastic reflector having asocket hole 40 that accepts and holds alight source 30.Reflector 50 is mounted withinlamp housing 25 by means well known in the art. For example, an adhesive can be used to mount the reflector to the lamp housing or the reflector can be snapped into the lamp housing. Aglare prevention feature 35 is located onreflector 50. As described in more detail below,glare prevention feature 35 is a thickened portion of the reflector that is formed on the reflector to prevent, at least in part, the formation of a sink and/or to fill or partially fill a recessed area on the reflector where a sink exists. Whilereflector 50 is a thermoplastic reflector in this embodiment, it will be appreciated by one skilled in the art that the reflector can comprise any number of reflectors known in the art. -
FIG. 2 is a cross-sectional view offront lamp assembly 45 along line A-A ofFIG. 1 . As shown inFIG. 2 ,reflector 50 has athick section 60 aroundsocket hole 40 andglare prevention feature 35 located in front of the thick section. If glare prevention feature was not present, asink 55 would form in front ofthick section 60.Glare prevention feature 35 is molded in the place wheresink 55 would form (shown by dotted line inFIG. 2 ) in order to prevent the formation of the sink and the associated glare problems therewith.Glare prevention feature 35 is arib 34 with aconvex surface 36 that has a sharp radius. The sharp radius of glare prevention feature 35 causes light to spread out over a very large area and reduces the intensity of any light that strikes and reflects off of its surface. This sharp radius prevents glare by preventing light from hitting the convex surface ofsink 55 and being reflected off ofsink 55 over a small angle. Thus, a designer of front lamp assemblies can prevent the glare caused bysink 55 by moldingglare prevention feature 35 in the place where the sink would form. - Glare prevention feature 35 forms and becomes part of
reflector 50 during the manufacture of the reflector.Reflector 50 is manufactured by an injection molding process well known in the art. A designer can determine wheresink 55 is located by molding a first reflector with an injection molding tool. The first reflector will not haveglare prevention feature 35.FIG. 3 shows a cross-sectional view offront lamp assembly 45 along line C-C ofFIG. 1 withoutglare prevention feature 35 included in the lamp assembly. As shown inFIG. 3 , sink 55 is located in front ofthick section 60 ofreflector 50. Instead of molding a first reflector, a designer could predict where the sink would be located by analyzing the design (i.e. a part drawing) of the reflector. The sink will be located in front of the thick section. Once the location and size ofsink 55 is determined, a designer can createglare prevention feature 35 by cutting into the injection molding tool the desired shape and size of the glare prevention feature at the location wheresink 55 appears. The designer can then injection mold a reflector with the altered injection molding tool andglare prevention feature 35 will be molded in the place wheresink 55 would have formed. -
FIG. 4 shows a cross-sectional view of front lamp assembly withglare prevention feature 35 along line C-C ofFIG. 1 . As shown inFIG. 4 ,glare prevention feature 35 is molded in the place where sink 55 (shown by the dotted line) would form onreflector 50. In this manner, a designer can prevent sink 55 from forming by moldingglare prevention feature 35 in the same location. Glare prevention feature 35 will prevent glare from being emitted from the front lamp assembly. It will be appreciated by one skilled in the art that other methods of creating the glare prevention feature can be utilized to manufacture the subject invention. For example, the designer could physically cover any sink formed on the reflector with the glare prevention feature instead of causing the glare prevention feature to be molded where the sink would normally form. Further, while the glare prevention feature comprises the same material used to create the reflector in this embodiment, it will be appreciated by one skilled in the art that various other materials can be used to manufacture the glare prevention feature. - Glare prevention feature 35 does not have to be molded in a way that prevents the
entire sink 55 from forming. While preventing all of the formation ofsink 55 is necessary to prevent all glare produced by the sink, it may be desirable for a designer to reduce the glare instead of entirely eliminating it.FIG. 5 shows a front view of another exemplary embodiment of the subject invention without its light source and its lens. As shown inFIG. 5 , the exemplary embodiment comprisesfog lamp assembly 65 withreflector 50 andlamp housing 25.Reflector 50 hassocket hole 40 located in the center of the reflector andglare prevention feature 35 located on the reflector.FIG. 6 shows a cross-sectional view offog lamp assembly 65 along line B-B ofFIG. 5 . As shown inFIGS. 5 and 6 ,glare prevention feature 35 only prevents the formation of a portion ofsink 55. By partially preventing the formation ofsink 55, the glare can be reduced to meet the desired lighting requirements for the particular automotive front lamp assembly being created. - Glare prevention feature 35 can be located anywhere on
reflector 50 and can be any shape and size necessary to prevent the formation of any number ofsinks 55.FIG. 7 shows a front view of automotivefront lamp assembly 70 without its lens and its light source. As shown inFIG. 7 , automotivefront lamp assembly 70 comprisesreflector 50 andlamp housing 25.Reflector 50 hassocket hole 40 in the center of the reflector and plurality of glare prevention features 35 located on the reflector. Each of the plurality of glare prevention features 35 can be small in size and located anywhere onreflector 50 in order to prevent the formation of anysink 55 on the reflector. It will be appreciated by one skilled in the art that the glare prevention feature can comprise many different shapes and designs in order to prevent the formation of the sink or sinks on the reflector. -
FIG. 8 shows another exemplary embodiment of the subject invention without its lens and its light source. As shown inFIG. 8 , this exemplary embodiment comprisesfront lamp assembly 75 havingreflector 50 andlamp housing 25.Reflector 50 hassocket hole 40 located in the center of the reflector and plurality of glare prevention features 35 located on its surface. In this embodiment, each of the plurality of glare prevention features 35 comprises a half-sphere with a sharp radius. Plurality of glare prevention features 35 prevent the formation ofsink 55 by being molded onreflector 50 where the sink would form.FIG. 9 shows a cross sectional view along line D-D ofFIG. 8 of one of the plurality of glare prevention features 35 onreflector 50. As shown inFIG. 9 , each individualglare prevention feature 35 forms a convex surface where sink 55 (shown by dotted line) would have been located. As already described, this prevents glare by spreading any light that strikes the convex surface over a large area. - Glare prevention feature 35 can also comprise a rib that redirects the light into a non-reflective surface such as the sidewall or the floor of
lamp housing 25.FIG. 10 shows another exemplary embodiment of the subject invention without its lens and its light source. The exemplary embodiment comprisesfront lamp assembly 80 havinglamp housing 25 andreflector 50.Reflector 50 hassocket hole 40 located in the center of the reflector andglare prevention feature 35 located on its surface.FIG. 11 shows a cross sectional view along line E-E ofFIG. 10 ofglare prevention feature 35. As shown inFIG. 11 ,glare prevention feature 35 of this embodiment comprises a rib with a substantiallyperpendicular surface 82 and acurved surface 84. Substantiallyperpendicular surface 82 is substantially perpendicular toreflector 50. In this embodiment,glare prevention feature 35 is located where sink 55 (shown by dotted line) would have formed. As a result, most of the light that hits the glare prevention feature's surface will be redirected into a non-reflective surface, such as the side-wall or floor oflamp housing 25. Thus,glare prevention feature 35 prevents glare by redirecting the light in a manner that does not allow it to pass out of lens 20 (not pictured). While glare prevention feature comprisescurved surface 84, it will be appreciated by one skilled in the art that the surface can be angled in such a way to cause the light to be redirected in the desired manner. It will also be appreciated thatglare prevention feature 35 could also redirect the light into a reflective surface that either spreads the light out so that it does not cause glare or into a reflective surface that will cause the light to continuously be reflected until it dissipates. - While the subject invention has been described in considerable detail with references to particular embodiments thereof, such is offered by way of non-limiting examples of the invention as many other versions are possible. For example, one could cover a sink located on a reflector with a glare prevention feature instead of molding the glare prevention feature where the sink would normally be. The sink could be filled with an epoxy to form a convex surface over the sink and then the epoxy surface could be covered with a reflective coating so that light that hits the glare prevention feature will be reflected over a large angle. It is anticipated that a variety of other modifications and changes will be apparent to those having ordinary skill in the art and that such modifications and changes are intended to be encompassed within the spirit and scope of the pending claims.
Claims (8)
1. An automotive front lamp assembly comprising:
a. a reflector; and
b. at least one glare prevention feature located on the reflector to prevent the formation of at least one sink.
2. The automotive front lamp assembly of claim 1 , wherein the reflector comprises a thermoplastic reflector.
3. The automotive front lamp assembly of claim 1 , wherein the at least one glare prevention feature comprises a rib with a reflective convex surface having a sharp radius.
4. The automotive front lamp assembly of claim 1 , wherein at least one glare prevention feature comprises a reflective half-sphere having a sharp radius.
5. The automotive front lamp assembly of claim 1 , wherein the at least one glare prevention feature comprises a rib with a substantially perpendicular surface to the reflector and a curved surface.
6. The automotive front lamp assembly of claim 1 , wherein the at least one glare prevention feature comprises a rib with a substantially perpendicular surface to the reflector and an angled surface.
7. The automotive front lamp assembly of claim 1 , wherein the at least one glare prevention partially prevents the formation of the at least one sink.
8. A method of preventing glare from being omitted from a front lamp assembly comprising the steps of:
a. providing a reflector with at least one sink;
b. providing at least one glare prevention feature; and
c. covering the at least one sink with the at lest one glare prevention feature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/228,716 US20060013011A1 (en) | 2003-08-04 | 2005-09-16 | Glare prevention feature |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/633,900 US7122136B2 (en) | 2003-08-04 | 2003-08-04 | Glare prevention feature |
US11/228,716 US20060013011A1 (en) | 2003-08-04 | 2005-09-16 | Glare prevention feature |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/633,900 Division US7122136B2 (en) | 2003-08-04 | 2003-08-04 | Glare prevention feature |
Publications (1)
Publication Number | Publication Date |
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US20060013011A1 true US20060013011A1 (en) | 2006-01-19 |
Family
ID=34115929
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/633,900 Expired - Fee Related US7122136B2 (en) | 2003-08-04 | 2003-08-04 | Glare prevention feature |
US11/228,716 Abandoned US20060013011A1 (en) | 2003-08-04 | 2005-09-16 | Glare prevention feature |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/633,900 Expired - Fee Related US7122136B2 (en) | 2003-08-04 | 2003-08-04 | Glare prevention feature |
Country Status (1)
Country | Link |
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US (2) | US7122136B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8322894B1 (en) * | 2011-06-14 | 2012-12-04 | Hsing-Mien Lee | Lamp assembly |
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2003
- 2003-08-04 US US10/633,900 patent/US7122136B2/en not_active Expired - Fee Related
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2005
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US4351018A (en) * | 1979-06-29 | 1982-09-21 | Cibie Projecteurs | Lamp with stepped reflector surface containing vertical ribs |
US4336578A (en) * | 1979-07-30 | 1982-06-22 | General Electric Company | Plastic par lamp construction with reinforced recepticle area |
US4563730A (en) * | 1981-12-24 | 1986-01-07 | Ichikoh Industries, Ltd. | Vehicle head lamp with synthetic resin reflector and ring-shaped heat shielding member |
US4703401A (en) * | 1985-12-23 | 1987-10-27 | Stanley Electric Co., Ltd. | Head lamp for automobiles |
US4916585A (en) * | 1988-04-04 | 1990-04-10 | Koito Seisakusho Co., Ltd. | Headlight device for vehicle |
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US5130904A (en) * | 1990-04-20 | 1992-07-14 | Koito Manufacturing Co., Ltd. | Automotive headlamp waving no ultraviolet output |
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US6152589A (en) * | 1998-05-28 | 2000-11-28 | Stanley Electric Co., Ltd. | Lamp |
US20010043475A1 (en) * | 2000-05-17 | 2001-11-22 | Koito Manufacturing Co., Ltd. | Vehicular signal lamp |
US20020057579A1 (en) * | 2000-11-16 | 2002-05-16 | Ichikoh Industries, Ltd. | Vehicle lamp |
US20020067548A1 (en) * | 2000-12-02 | 2002-06-06 | Terhovhannisian Artak | Automobile reflector assembly |
US20020145882A1 (en) * | 2001-04-10 | 2002-10-10 | Koito Manufacturing Co., Ltd. | Vehicular lamp and injection mold and manufacturing method for lamp body of vehicular lamp |
US7316487B2 (en) * | 2001-04-13 | 2008-01-08 | Hitachi, Ltd. | Projector light source and projection type image display device using the same |
US20020154514A1 (en) * | 2001-04-24 | 2002-10-24 | Koito Manufacturing Co., Ltd | Infrared irradiation lamp for automobile |
US6454433B1 (en) * | 2001-05-24 | 2002-09-24 | Eveready Battery Company, Inc. | Dual faceted reflector |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8322894B1 (en) * | 2011-06-14 | 2012-12-04 | Hsing-Mien Lee | Lamp assembly |
US20120320603A1 (en) * | 2011-06-14 | 2012-12-20 | Hsing-Mien Lee | Lamp assembly |
Also Published As
Publication number | Publication date |
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US7122136B2 (en) | 2006-10-17 |
US20050030757A1 (en) | 2005-02-10 |
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