WO2003050486A1 - Structure d'extremite ouverte de source lumineuse a sphere integrante - Google Patents

Structure d'extremite ouverte de source lumineuse a sphere integrante Download PDF

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Publication number
WO2003050486A1
WO2003050486A1 PCT/JP2002/010256 JP0210256W WO03050486A1 WO 2003050486 A1 WO2003050486 A1 WO 2003050486A1 JP 0210256 W JP0210256 W JP 0210256W WO 03050486 A1 WO03050486 A1 WO 03050486A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
integrating sphere
open end
sphere light
image
Prior art date
Application number
PCT/JP2002/010256
Other languages
English (en)
Japanese (ja)
Inventor
Hirokazu Yoshimura
Original Assignee
Japan Science And Technology Corporation
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 Japan Science And Technology Corporation filed Critical Japan Science And Technology Corporation
Publication of WO2003050486A1 publication Critical patent/WO2003050486A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/08—Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0474—Diffusers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J2001/0481—Preset integrating sphere or cavity

Definitions

  • the present invention relates to an open-end structure of an integrating sphere light source for capturing an image of only a light source.
  • integrating spheres have been used as uniform light sources in a variety of applications, from space and craft design and testing to small-scale experiments.
  • the CCD camera replaces the film, it is expected that the integrating sphere will be used as a uniform light source in combination with the CCD camera in the future.
  • the inventor of the present application has proposed a combination of an integrating sphere light source and a CCD camera as Japanese Patent Application No. 2001-31053.
  • the flat field method is used to test and correct the uniformity of the light source and its change over time.
  • the object to be imaged by the CCD camera is removed, and an image of only the light source is imaged.
  • the current general open-ended structure of an integrating sphere provides a uniform light source by capturing various structures inside the integrating sphere by imaging through the open end. Original image cannot be obtained.
  • an object of the present invention is to provide an open-end structure of an integrating sphere light source capable of quickly and accurately capturing an image of only a light source without changing the focus of a camera.
  • a planar light diffusing device is arranged at the open end of the integrating sphere light source in order to capture an image of only the light source.
  • the planar light diffusing device is characterized in that a planar light diffusing plate is arranged below an imaging member.
  • FIG. 1 is a schematic diagram of an integrating sphere light source device showing a first embodiment of the present invention.
  • FIG. 1 is a schematic view of an integrating sphere light source device showing a first embodiment of the present invention.
  • FIG. 3 is a schematic view showing a structure of an open end of an integrating sphere light source device according to a second embodiment of the present invention.
  • FIG. 1 is a schematic view of an integrating sphere light source device showing a first embodiment of the present invention.
  • 1 is a base
  • 2 is a support
  • 3 is a support axis
  • 4 is an integrating sphere light source (the light source is inside a sphere coated in white, which diffuses and reflects the inner surface.
  • 5 is provided at the open end of the integrating sphere light source 4 and 6 is provided at the open end 5 thereof.
  • the open end 5 of the integrating sphere light source 4 can be used to maintain uniformity, transmit power and light, and minimize the directionality of the light as much as possible.
  • This flat light diffusion device 6 can be permanently placed at the open end 5 according to the purpose.
  • FIG. 2 is a schematic diagram of an integrating sphere light source device showing a first embodiment of the present invention
  • FIG. 3 is a schematic diagram showing a structure of an open end of the integrating sphere light source device.
  • 1 1 is a base
  • 1 2 is a column
  • 13 is a support axis
  • 14 is an integrating sphere light source
  • 15 is an open end of an integrating sphere light source
  • 16 is an open end of 15
  • a flat light diffusion device 16 is provided.
  • the flat light diffusion device 16 includes a ground glass (light diffusion glass) 17 from below, a photographic dry plate or film 18 as an imaging member, and a calibration glass 19 thereon. Deploy. That is, ground glass (light diffusing glass) 17 is arranged under a photographic plate or film 18 as an imaging member.
  • Reference numeral 20 denotes a camera as an imaging device.
  • a light diffusing glass (ground glass or frosted glass) 17 sprayed with fine sand is placed on the open end 15 of the integrating sphere light source 14, and a photographic dry plate to be imaged with the calibration glass 19.
  • the film 18 was sandwiched.
  • an image of frosted glass excluding this imaging target is used as the image of the light source used for the flat field method.
  • the size of the sand when making this frosted glass must be smaller than the size of one element of CCD when photographed.
  • the present invention is not limited to frosted glass as long as it is a flat surface that can maintain uniformity, transmit light, and minimize the directionality of the light as much as possible.
  • Various materials such as translucent ceramics and plastics can be used.
  • the integrating sphere light source was designed so that the uniformity of the light source was guaranteed only on the open end surface.
  • the flat light diffusion device flat light diffusion plate
  • the light source uniformity is better maintained without a planar light diffuser (light diffuser) even at a location slightly away from the open end.
  • the present invention is not limited to the above-described embodiment, but is based on the gist of the present invention. Various modifications are possible, and these are not excluded from the scope of the present invention. As described above, according to the present invention, the following effects can be obtained.
  • the open-end structure of the integrating sphere light source of the present invention can quickly and accurately capture an image of only the light source without changing the focus of the camera, and can be widely used as an imaging device such as a CCD camera.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

L'invention concerne une structure d'extrémité ouverte de source lumineuse à sphère intégrante, permettant d'assurer une prise de vues rapide et correcte de la source lumineuse seulement, sans modifier la mise au point de l'appareil de prise de vues utilisé. Pour réaliser une prise de vues de la source lumineuse seulement, on place un dispositif de diffusion d'éclairage plat (16) à l'extrémité ouverte (15) de la source lumineuse à sphère intégrante (14).
PCT/JP2002/010256 2001-12-12 2002-10-02 Structure d'extremite ouverte de source lumineuse a sphere integrante WO2003050486A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-378110 2001-12-12
JP2001378110A JP4046997B2 (ja) 2001-12-12 2001-12-12 積分球光源の開放端の構造

Publications (1)

Publication Number Publication Date
WO2003050486A1 true WO2003050486A1 (fr) 2003-06-19

Family

ID=19185925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/010256 WO2003050486A1 (fr) 2001-12-12 2002-10-02 Structure d'extremite ouverte de source lumineuse a sphere integrante

Country Status (2)

Country Link
JP (1) JP4046997B2 (fr)
WO (1) WO2003050486A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1793341A4 (fr) * 2004-09-17 2009-11-04 Japan Science & Tech Agency Dispositif de numérisation d'objet utilisant une source d'onde de sphère d'intégration
KR101090594B1 (ko) 2009-09-14 2011-12-06 최혁재 이미지센서의 화질 평가용 광원의 균일성 확보, 조도 가변에 따른 색온도의 변화 최소화, 단일광원을 이용한 다양한 색온도를 구현하는, 장치 및 방법과 이를 이용한 카메라 화질 평가 장치 및 방법.
KR100996881B1 (ko) * 2010-01-06 2010-11-26 유병소 적분구

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021586U (fr) * 1973-06-21 1975-03-11
JPH08320253A (ja) * 1995-05-25 1996-12-03 Matsushita Electric Ind Co Ltd 全光束測定装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021586U (fr) * 1973-06-21 1975-03-11
JPH08320253A (ja) * 1995-05-25 1996-12-03 Matsushita Electric Ind Co Ltd 全光束測定装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"The Illuminating Engineering Institute of Japan", 30 November 1990, KABUSHIKI KAISHA NIPPON RIKO SHUPPANKAI, article "Hikari no Keisoku Manual", pages: 98 - 102, XP002961792 *

Also Published As

Publication number Publication date
JP4046997B2 (ja) 2008-02-13
JP2003177061A (ja) 2003-06-27

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