GB2273997A - Self-retaining reflector for flashtube - Google Patents

Self-retaining reflector for flashtube Download PDF

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Publication number
GB2273997A
GB2273997A GB9225357A GB9225357A GB2273997A GB 2273997 A GB2273997 A GB 2273997A GB 9225357 A GB9225357 A GB 9225357A GB 9225357 A GB9225357 A GB 9225357A GB 2273997 A GB2273997 A GB 2273997A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
flashtube
reflector
retaining
ends
reflecting
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
GB9225357A
Other versions
GB9225357D0 (en )
GB2273997B (en )
Inventor
Josef Zimlich
Beng Seng Poo
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.)
Heimann Optoelectronics Singapore Private Ltd
HEIMANN OPTOELECTRONICS SINGAP
Original Assignee
* HEIMANN OPTOELECTRONICS SINGAPORE PRIVATE LIMITED
HEIMANN OPTOELECTRONICS SINGAP
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

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00Special procedures for taking photographs; Apparatus therefor
    • G03B15/02Illuminating scene
    • G03B15/03Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05Combinations of cameras with electronic flash apparatus; Electronic flash units
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05Combinations of cameras with electronic flash units
    • G03B2215/0514Separate unit
    • G03B2215/0517Housing
    • G03B2215/0525Reflector
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05Combinations of cameras with electronic flash units
    • G03B2215/0514Separate unit
    • G03B2215/0517Housing
    • G03B2215/0525Reflector
    • G03B2215/0532Flashtube mounting
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2219/00Cameras
    • G03B2219/02Still-picture cameras
    • G03B2219/04Roll-film cameras
    • G03B2219/045Roll-film cameras adapted for unloading the film in the processing laboratory, e.g. disposable, reusable or recyclable cameras

Abstract

The reflector has a reflecting surface 32 and is contoured to have receiving section 36 to receive the flashtube 40 longitudinally and has retaining ends 34 for securing both ends of the flashtube to the reflector. The retaining ends of the reflector are V-shape openings which allow both ends of the flashtube to be exposed and connected to the trigger mechanism of the camera, and also can be securely fastened therebetween when held by the front cover 35 of the camera. <IMAGE>

Description

<RTI> S-RETAININC REFLECTOR FOR FtSHTUBE</RTI> This new invention relates to the field of retainers and fasteners for securing flashtubes. In particular, the present invention pertains to a method and apparatus for retaining and reflecting a flashtube without requiring additional parts.

In modern electronic camera, the flash unit comprising a xenon flashtube and a reflector are mounted into a cavity of the camera by means of a holder or retainer. The holder consisting of either a rubber band or a silicon o-ring is required because the flash unit is "pop-up" either automatically or manually before the user takes a picture. Lately, disposable cameras are gaining popularity. The portable and disposable nature of such cameras also required the flashtube be securely fastened to the reflector.

The principal disadvantage of retaining the flashtube to the reflector with a holder is the additional part. It follows that there are higher material cost and extra processing time.

The present invention secures the flashtube to the reflector of a camera without a holder. The reflector has a reflecting surface having a contour to receive the flashtube longitudinally and a plurality of retaining ends for securing both ends of the flashtube to the reflector. The retaining ends of a reflector comprising of an inverted V-shape openings not only to allow both ends of the flashtube to be exposed and connected to the trigger mechanism of the camera, but also can be securely fastened therebetween.

Preferably, said reflecting surface is either aluminium or coated with an aluminium paint.

For a better understanding of the present invention and to show how the same may be carried into effect, reference will now be made by way of example to the accompanying drawings, in <RTI>which</RTI> FIG. 1 is a front right side perspective view of a prior art flashtube reflector assembly without a holder.

FIG. 2 is a front right side perspective view of another prior art flashtube reflector assembly using a holder.

FIG. 3 is a front right side perspective view of the preferred embodiment of the present invention.

<RTI>FIG.4</RTI> is a front elevational view of the new flashtube reflector of the present invention and illustrating one of the retaining ends in an open position.

<RTI>F1G.5</RTI> is a front elevational view of the new flashtube reflector of the present invention and illustrating one of the retaining ends in a close position and having an inverted V-shaped opening with an angle of <RTI>Q.</RTI>

<RTI>FIG.6</RTI> is a front elevational view of the new flashtube reflector assembly of the present invention and illustrating a flashtube being securely fastened between the retaining end.

A method and apparatus for retaining flashtube in a camera reflector without a holder is described below.

FIG. 1 is a prior art camera flashtube reflector that is used commonly in disposable cameras. The camera flashtube reflector 10 comprises reflector section 12 terminating in a plurality of retaining ends 14. The reflector 10 is normally coupled to a front cover 15 which in turn is coupled to a cavity of a camera (not shown). The reflector section 12 consists of a receiving section 16 whose contour is amendable for accommodating a flashtube 20. Referring again to FIG. 1, the retaining ends 14 consisting of two halves. The edges 18 of the retaining ends closest to the receiving section 16 form a semi circular opening such that the flashtube 20 can be slidably inserted into the opening formed by the receiving section 16 and the retaining edges 18. One disadvantage with this prior art flashtube reflector is that the flashtube are not securely retained within the reflector 10.

The shortcoming of the prior art camera flashtube reflector 10 shown in FIG. 1 is addressed partially in the prior art flashtube reflector assembly in FIG. 2. Here, the same flashtube reflector as illustrated in FIG. 1 is employed but a holder 25 is strapped over the outer surface of the reflector 10 and above both ends of the flashtube 20 to retain the flashtube 20 in the reflector. Suitable candidates for the holder 25 include rubber band and silicon o-ring. It should be understood by one skilled in the art that a flashtube reflector assembly such as that in FIG. 2 require additional material cost as well as extra processing/assembly steps.

FIG. 3 is a front right side perspective view of the new flashtube reflector of the present invention. The new flashtube reflector 30 comprises a reflector section 32 terminating in a plurality of retaining ends 34. The reflector 30 is normally coupled to a front cover 35 which in turn is coupled to a cavity of a camera (not shown). The reflector section 32 consists of a receiving section 36 whose contour is amendable for accommodating a flashtube 20. Referring again to FIG. 3, the retaining ends 34 consisting of two halves. The edges 38 of the retaining ends closest to the receiving section 36 form a v-shape opening such that the flashtube 40 can be slidably inserted into the v-shape opening formed by the receiving section 36 and the retaining edges 38.Unlike the prior art flashtube reflectors in FIGS. 1 and 2, the flashtube 40 is retained by the receiving section 36 and the retaining edges 38. As the retaining ends are integral part of the reflector 30, no additional holder is needed to retain the flashtube 40 in the reflector.

FIG. 4 is the front elevational view of the new flashtube reflector of the present invention. Shown there is a cross-sectional view of the reflector section 32 and the receiving section 36. Two halves of the retaining ends 34 are also illustrated. Here, the retaining ends are shown in the opened position and without the flashtube.

FIG. 5 is the front elevational view of the new flashtube reflector of the present invention. Shown there is a cross-sectional view of the reflector assembly 30 being coupled to the front cover 35 of a camera (not shown).

In a close position, the front elevational view of the reflector shows an inverted V-shaped opening formed by above the retaining edges 34 and below the receiving section 36. In the preferred embodiment of the present invention, the angle <RTI>Q</RTI> is 134 degrees for a flashtube having a diameter of <RTI>3.15+1-</RTI> 0.1 mm. The thickness of the reflector section 32 is uniform and is 0.3 mm. It should be understood by one skilled in the art that the angle <RTI>fl</RTI> varies with the diameter of the flashtube. Furthermore, the reflector section may take on non-uniform thickness.

FIG. 6 is the front elevational view of the new flashtube reflector of the present invention with the flashtube retained therein. Shown there is a cross-sectional view of the reflector assembly 30 being coupled to the front cover 35 of a camera (not shown). In a close position, the front elevational view of the reflector shows that the flashtube 40 is retained above by the retaining edges at locations 42 and below by the receiving section 36 at location 44.

While the present invention has been particularly described with reference to FIGS. 1 to 6 and with emphasis on flashtube reflector for cameras, it should be understood by one skilled in the art that the figures are for illustration only and should not be taken as limitations upon the invention.

In addition, it is clear that the method and apparatus of the present invention has utility in any applications where retaining flashtube reflectors is required.

It is contemplated that many changes and modifications may be made by one of ordinary skill without departing from the spirit and scope of the invention as disclosed above.

Claims (10)

Claims
1. A reflector for retaining and reflecting a flashtube of a camera comprising: a reflecting surface for receiving a flashtube longitudinally and for reflecting rays from said flashtube when triggered, and at least two retaining ends for retaining said flashtube therebetween when said ends are in a closed position.
2. The reflector according to claim 1 wherein said reflecting surface is integral with said retaining ends.
3. The relector according to claim 1 wherein said retaining ends forming an inverted V-shaped opening when in a closed position, said Vshaped opening being in contact with one end of said flashtube in at most two locations along the edge of said V-shaped opening, said flashtube being in contact with the reflecting surface simultaneously.
4. The reflector according to claims 1 or 2 wherein said reflecting surface is either aluminium or coated with an aluminium paint.
5. A reflector for retaining and reflecting a flashtube of a camera substantially as hereinbefore described with reference to or as shown in the accompanying drawings.
6. A method for retaining and reflecting a flashtube of a camera comprising: providing a reflecting surface for receiving a flashtube longitudinally and for reflecting rays from said flashtube when triggered, and retaining said flashtube between at least two retaining ends when said ends are in a closed position.
7. The method according to claim 6 wherein said reflecting surface is integral with said retaining ends.
8. The method according to claim 6 wherein said retaining ends forming an inverted V-shaped opening when in a closed position, said Vshaped opening being in contact with one end of said flashtube in at most two locations along the edge of said V-shaped opening, said flashtube being in contact with the reflecting surface simultaneously.
9. The method according to claims 6 or 7 wherein said reflecting surface is either aluminium or coated with an aluminium paint.
10. A method for retaining and reflecting a flashtube of a camera substantially as hereinbefore described with reference to or as shown in the accompanying drawings.
GB9225357A 1992-12-04 1992-12-04 Self-retaining reflector for flashtube Expired - Fee Related GB2273997B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9225357A GB2273997B (en) 1992-12-04 1992-12-04 Self-retaining reflector for flashtube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9225357A GB2273997B (en) 1992-12-04 1992-12-04 Self-retaining reflector for flashtube

Publications (3)

Publication Number Publication Date
GB9225357D0 GB9225357D0 (en) 1993-01-27
GB2273997A true true GB2273997A (en) 1994-07-06
GB2273997B GB2273997B (en) 1996-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9225357A Expired - Fee Related GB2273997B (en) 1992-12-04 1992-12-04 Self-retaining reflector for flashtube

Country Status (1)

Country Link
GB (1) GB2273997B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317625A (en) * 1980-08-04 1982-03-02 Polaroid Corporation Strobe reflector assembly
US4412276A (en) * 1981-12-07 1983-10-25 Polaroid Corporation Strobe reflector assembly
US4460942A (en) * 1983-06-13 1984-07-17 Polaroid Corporation Electronic flash with flashtube retention strap
US4570205A (en) * 1983-06-21 1986-02-11 West Electric Company, Ltd. Strobe apparatus
US5047900A (en) * 1991-01-07 1991-09-10 Eastman Kodak Company Electronic flash apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317625A (en) * 1980-08-04 1982-03-02 Polaroid Corporation Strobe reflector assembly
US4412276A (en) * 1981-12-07 1983-10-25 Polaroid Corporation Strobe reflector assembly
US4460942A (en) * 1983-06-13 1984-07-17 Polaroid Corporation Electronic flash with flashtube retention strap
US4570205A (en) * 1983-06-21 1986-02-11 West Electric Company, Ltd. Strobe apparatus
US5047900A (en) * 1991-01-07 1991-09-10 Eastman Kodak Company Electronic flash apparatus

Also Published As

Publication number Publication date Type
GB9225357D0 (en) 1993-01-27 grant
GB2273997B (en) 1996-05-15 grant

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee