WO2012060777A3 - Lamp cover for a flash unit - Google Patents

Lamp cover for a flash unit Download PDF

Info

Publication number
WO2012060777A3
WO2012060777A3 PCT/SG2011/000384 SG2011000384W WO2012060777A3 WO 2012060777 A3 WO2012060777 A3 WO 2012060777A3 SG 2011000384 W SG2011000384 W SG 2011000384W WO 2012060777 A3 WO2012060777 A3 WO 2012060777A3
Authority
WO
WIPO (PCT)
Prior art keywords
lamp cover
flash unit
zones
window
provides
Prior art date
Application number
PCT/SG2011/000384
Other languages
French (fr)
Other versions
WO2012060777A4 (en
WO2012060777A2 (en
Inventor
Jianghong Zhou
Original Assignee
Xenon Technologies Pte. 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 Xenon Technologies Pte. Ltd. filed Critical Xenon Technologies Pte. Ltd.
Priority to SG2013033840A priority Critical patent/SG190115A1/en
Priority to TW101103469A priority patent/TW201317698A/en
Publication of WO2012060777A2 publication Critical patent/WO2012060777A2/en
Publication of WO2012060777A3 publication Critical patent/WO2012060777A3/en
Publication of WO2012060777A4 publication Critical patent/WO2012060777A4/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The present application provides a lamp cover (202, 278, 346, 358, 386, 394) for closing a window (43) of a flash unit (200, 276). The lamp cover (202, 278, 346, 358, 386, 394) comprises a first array of optical zones (254, 330, 347, 361, 388, 390, 392, 396) that are contiguously connected to each other on a surface (63) of the lamp cover (202, 278, 346, 358, 386, 394). One or more of the optical zones (202, 278, 346, 358, 386, 394) have a pitch (255, 342, 362) of 0.07 millimeter at most for visually blurring objects (34, 36, 38, 44, 48, 54, 56) placed behind the lamp cover (202, 278, 346, 358, 386, 394). The application also provides a method for making or using the flash unit (200, 276), which comprises a step of sealing the window (43) with the lamp cover (202, 278, 346, 358, 386, 394). The application further provides a method for making the lamp cover (202, 278, 346, 358, 386, 394), which comprises a step of injecting a molten optical plastic material into a mould insert (262) for providing optical zones (254, 330, 347, 361, 388, 390, 392, 396) or Fresnel zones (254, 330, 347, 361, 388, 390, 392, 396) and a step of detaching the lamp cover (202, 278, 346, 358, 386, 394) from the mould insert (262).
PCT/SG2011/000384 2010-11-03 2011-10-28 Lamp cover for a flash unit WO2012060777A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SG2013033840A SG190115A1 (en) 2010-11-03 2011-10-28 Lamp cover for a flash unit
TW101103469A TW201317698A (en) 2011-10-28 2012-02-02 Lamp cover for a flash unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG2010080893A SG180059A1 (en) 2010-11-03 2010-11-03 Flash unit having a micro fresnel lens
SG201008089-3 2010-11-03

Publications (3)

Publication Number Publication Date
WO2012060777A2 WO2012060777A2 (en) 2012-05-10
WO2012060777A3 true WO2012060777A3 (en) 2012-09-27
WO2012060777A4 WO2012060777A4 (en) 2012-10-18

Family

ID=46024986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2011/000384 WO2012060777A2 (en) 2010-11-03 2011-10-28 Lamp cover for a flash unit

Country Status (2)

Country Link
SG (2) SG180059A1 (en)
WO (1) WO2012060777A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI653495B (en) * 2014-06-26 2019-03-11 荷蘭商皇家飛利浦有限公司 Led lighting unit
US10009527B2 (en) 2014-06-26 2018-06-26 Philips Lighting Holding B.V. Compact LED lighting unit for use in camera or video flash applications

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084265A2 (en) * 2003-03-13 2004-09-30 Gelcore Llc Led symbol signal
JP2007073469A (en) * 2005-09-09 2007-03-22 Minebea Co Ltd Planar illuminator and light source unit using same
JP2008218186A (en) * 2007-03-05 2008-09-18 Mitsubishi Electric Corp Luminaire
US20100165489A1 (en) * 2008-12-26 2010-07-01 Canon Kabushiki Kaisha Fresnel lens and injection mold
US20100178046A1 (en) * 2009-01-09 2010-07-15 Samsung Led Co., Ltd. Camera flash lens and portable device including the same
JP2010197919A (en) * 2009-02-27 2010-09-09 Takiron Co Ltd Optical sheet and backlight unit using the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084265A2 (en) * 2003-03-13 2004-09-30 Gelcore Llc Led symbol signal
JP2007073469A (en) * 2005-09-09 2007-03-22 Minebea Co Ltd Planar illuminator and light source unit using same
JP2008218186A (en) * 2007-03-05 2008-09-18 Mitsubishi Electric Corp Luminaire
US20100165489A1 (en) * 2008-12-26 2010-07-01 Canon Kabushiki Kaisha Fresnel lens and injection mold
US20100178046A1 (en) * 2009-01-09 2010-07-15 Samsung Led Co., Ltd. Camera flash lens and portable device including the same
JP2010197919A (en) * 2009-02-27 2010-09-09 Takiron Co Ltd Optical sheet and backlight unit using the same

Also Published As

Publication number Publication date
WO2012060777A4 (en) 2012-10-18
SG190115A1 (en) 2013-07-31
SG180059A1 (en) 2012-05-30
WO2012060777A2 (en) 2012-05-10

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