FR2758633B1 - Dispositif de concentration des rayons lumineux et systeme de projection utilisant un tel dispositif - Google Patents

Dispositif de concentration des rayons lumineux et systeme de projection utilisant un tel dispositif

Info

Publication number
FR2758633B1
FR2758633B1 FR9700685A FR9700685A FR2758633B1 FR 2758633 B1 FR2758633 B1 FR 2758633B1 FR 9700685 A FR9700685 A FR 9700685A FR 9700685 A FR9700685 A FR 9700685A FR 2758633 B1 FR2758633 B1 FR 2758633B1
Authority
FR
France
Prior art keywords
projection system
light ray
ray concentration
concentration device
light
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.)
Expired - Fee Related
Application number
FR9700685A
Other languages
English (en)
Other versions
FR2758633A1 (fr
Inventor
Dibon Eric Marcellin
Valter Drazic
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.)
Technicolor SA
Original Assignee
Thomson Multimedia SA
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 Thomson Multimedia SA filed Critical Thomson Multimedia SA
Priority to FR9700685A priority Critical patent/FR2758633B1/fr
Publication of FR2758633A1 publication Critical patent/FR2758633A1/fr
Application granted granted Critical
Publication of FR2758633B1 publication Critical patent/FR2758633B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G02B19/0023—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0994—Fibers, light pipes
FR9700685A 1997-01-23 1997-01-23 Dispositif de concentration des rayons lumineux et systeme de projection utilisant un tel dispositif Expired - Fee Related FR2758633B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9700685A FR2758633B1 (fr) 1997-01-23 1997-01-23 Dispositif de concentration des rayons lumineux et systeme de projection utilisant un tel dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9700685A FR2758633B1 (fr) 1997-01-23 1997-01-23 Dispositif de concentration des rayons lumineux et systeme de projection utilisant un tel dispositif

Publications (2)

Publication Number Publication Date
FR2758633A1 FR2758633A1 (fr) 1998-07-24
FR2758633B1 true FR2758633B1 (fr) 1999-04-02

Family

ID=9502905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9700685A Expired - Fee Related FR2758633B1 (fr) 1997-01-23 1997-01-23 Dispositif de concentration des rayons lumineux et systeme de projection utilisant un tel dispositif

Country Status (1)

Country Link
FR (1) FR2758633B1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1095763A (fr) * 1954-03-16 1955-06-06 Concentrateur de lumière pour appareils de projections fixes ou cinématographiques
FR66734E (fr) * 1954-07-13 1957-08-19 Concentrateur de lumière pour appareils de projections fixes ou cinématographiques
JPS6449017A (en) * 1987-08-19 1989-02-23 Canon Kk Projection optical system
JPH03167520A (ja) * 1989-11-28 1991-07-19 Pioneer Electron Corp 液晶投写装置用光源装置
JPH0713713B2 (ja) * 1990-03-17 1995-02-15 カシオ計算機株式会社 液晶プロジェクタ
US5142387A (en) * 1990-04-11 1992-08-25 Mitsubishi Denki Kabushiki Kaisha Projection-type display device having light source means including a first and second concave mirrors
US5258867A (en) * 1991-10-10 1993-11-02 Light Ideas Incorporated Base station performance enhancements for infrared-linked telephone and communications systems
US5459645A (en) * 1994-01-10 1995-10-17 Delco Electronics Corporation Wide angle light coupler for image illumination
FR2733062B1 (fr) * 1995-04-13 1997-06-27 Thomson Multimedia Sa Systeme de projection comportant un reflecteur et une lentille de champ a surface libre

Also Published As

Publication number Publication date
FR2758633A1 (fr) 1998-07-24

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Legal Events

Date Code Title Description
ST Notification of lapse