JPS57116328A - Flash device - Google Patents

Flash device

Info

Publication number
JPS57116328A
JPS57116328A JP287581A JP287581A JPS57116328A JP S57116328 A JPS57116328 A JP S57116328A JP 287581 A JP287581 A JP 287581A JP 287581 A JP287581 A JP 287581A JP S57116328 A JPS57116328 A JP S57116328A
Authority
JP
Japan
Prior art keywords
axis
optical axis
reflecting surface
photographic optical
relatively
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.)
Pending
Application number
JP287581A
Other languages
Japanese (ja)
Inventor
Hiroyuki Kataoka
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP287581A priority Critical patent/JPS57116328A/en
Publication of JPS57116328A publication Critical patent/JPS57116328A/en
Pending legal-status Critical Current

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
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • 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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0514—Separate unit
    • G03B2215/0517—Housing
    • G03B2215/0525—Reflector
    • 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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0514—Separate unit
    • G03B2215/0517—Housing
    • G03B2215/0525—Reflector
    • G03B2215/0528—Reflector movable reflector, e.g. change of illumination angle or illumination direction

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To enable uniform irradiation to an object by making the reflection angle of reflectivity and/or the refracting power of a protector lens assymetric to a flash irradiation axis while leaving a flash irradiation direction shifted in parallel to a photographic optical axis. CONSTITUTION:A flash light source 5 and a main body 3 are arranged so that an axis 3a in its irradiation dierection is placed in parallel to a photographic optical axis. Then, the inclination of the reflecting surface 4a of a reflecting umbrella 4 to the photographic optical axis 3a is made less than that of the reflecting surface 4b closer to the photographic optical axis than the other surface. Therefore, reflected light l1 from the reflecting surface 4a is emitted relatively along the optical axis 3a, and reflected light l2 from the reflecting surface 4a is emitted covering an object at a relatively large angle. When a protector lens 6 is used, its refracting power is made asymmetric on the axis 3a; and luminous flux above the axis 3a is focused relatively, and luminous flux below it is diffused relatively to reach the object. Thus, the object is irradiated uniformly.
JP287581A 1981-01-12 1981-01-12 Flash device Pending JPS57116328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP287581A JPS57116328A (en) 1981-01-12 1981-01-12 Flash device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP287581A JPS57116328A (en) 1981-01-12 1981-01-12 Flash device

Publications (1)

Publication Number Publication Date
JPS57116328A true JPS57116328A (en) 1982-07-20

Family

ID=11541520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP287581A Pending JPS57116328A (en) 1981-01-12 1981-01-12 Flash device

Country Status (1)

Country Link
JP (1) JPS57116328A (en)

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