Electronic lighting unit and photographic equipment with the electronic lighting unit

• US 20050168965A1
• Filed: 02/02/2005
• Published: 08/04/2005
• Est. Priority Date: 02/02/2004
• Status: Abandoned Application

• Current Assignee: Fujinon Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujinon Corporation (Fujifilm Holdings Corporation)
• Inventors: Yoshida, Hideo
• Application Number:
  US11/047,969
• Publication Number:
  US 20050168965A1
• Time in Patent Office: Days
• US Class Current: 362/3
• CPC Class Codes: G03B 15/05 Combinations of cameras with electronic flash apparatus; Electronic flash units
• CPC Class Codes: G03B 2215/05 Combinations of cameras with electronic flash units
• CPC Class Codes: H04N 23/74 by influencing the scene brightness using illuminating means

Abstract

A lighting unit for producing flash light toward subjects in a photographic scene comprises an matrix array of light emitting elements arranged so as to have individual lighting fields different from one another, a selective excitation circuit for exciting selectively the light emitting elements so as to produce flash light, different in intensity as appropriate, in predetermined lighting patterns and an excitation/extinction circuit 250 for exciting or extinguishing the light emitting elements. A photographic equipment equipped with the lighting unit has directive switches or buttons for directing the lighting unit to select lighting pattern according to focal lengths, zoom rations, operation modes including a communication mode, and/or demands of pre-lighting,

Claims

1. A lighting unit for producing flash light toward a subject in a photographic scene comprising:

a plurality of light emitting elements arranged so as to have individual lighting fields different from one another;

selective excitation mean for exciting selectively said light emitting elements so as to produce flash light in predetermined lighting patterns.

2. The lighting unit as defined in claim 1, wherein said light emitting element consists of a light emitting diode.

3. The lighting unit as defined in claim 1, wherein said selective excitation mean further excites said light emitting elements to produce flash light altered in intensity.

4. A photographic equipment comprising:

an image pickup system operative to form an optical image of a subject on an image pickup device through a taking lens, said image pickup system having at least one of optical and electronic zooming features;

a lighting unit comprising for producing flash light toward the field of view of the image pick up system, said lighting unit comprising a plurality of light emitting elements arranged so as to have individual lighting fields different from one another;

selective excitation mean for exciting selectively said light emitting elements to produce flash light in predetermined different lighting patterns; and

lighting pattern directive means for directing said selective excitation mean to excite selectively said light emitting elements to produce flash light in different lighting patterns.

5. The photographic equipment as defined in claim 4, wherein said light emitting element consists of a light emitting diode.

6. The photographic equipment as defined in claim 5, wherein said selectively exciting mean further changes intensity of light that each said light emitting element emits.

7. The photographic equipment as defined in claim 6, wherein said lighting pattern directive means directs said selective excitation mean to excite selectively said light emitting elements to produce flash light in predetermined different lighting patterns according to at least one of adopted optical and electronic zoom ratios of said image pickup system.

8. The photographic equipment as defined in claim 7, wherein said lighting pattern directive means further directs said selective excitation mean to excite said light emitting elements to produce flash light altered in intensity according to one of an adopted focal length and an F-number of said taking lens.

9. The photographic equipment as defined in claim 4, wherein said lighting pattern directive means directs said selective excitation mean to excite selectively said light emitting elements to produce flash light in predetermined different lighting patterns according to subject distances.

10. The photographic equipment as defined in claim 4, wherein said lighting pattern directive means further directs said selective excitation mean to excite selectively said light emitting elements to produce flash light in different lighting patterns for purposive pre-lighting for at least automatic focusing convenience, determination of lighting intensity for flash photo shooting, or elimination or alleviation of red-eye effect.

11. The photographic equipment as defined in claim 10, wherein said lighting pattern directive means directs said selective excitation mean to excite said light emitting elements to produce flash light at intensity for said pre-lighting lower than for said flash photo shooting.

12. The photographic equipment as defined in claim 4, and further comprising an optical communication means for making optical communication with external equipments, wherein said lighting pattern directive means directs said selective excitation mean to excite said light emitting elements to produce flash in a specific lighting pattern for optical communication.