GB2333858B - Improvements in or relating to variable focus lenses - Google Patents

Improvements in or relating to variable focus lenses

Info

Publication number
GB2333858B
GB2333858B GB9905770A GB9905770A GB2333858B GB 2333858 B GB2333858 B GB 2333858B GB 9905770 A GB9905770 A GB 9905770A GB 9905770 A GB9905770 A GB 9905770A GB 2333858 B GB2333858 B GB 2333858B
Authority
GB
United Kingdom
Prior art keywords
relating
variable focus
focus lenses
lenses
variable
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
GB9905770A
Other versions
GB2333858A (en
GB9905770D0 (en
Inventor
Joshua David Silver
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GBGB9619198.6A external-priority patent/GB9619198D0/en
Application filed by Individual filed Critical Individual
Priority to GB9905770A priority Critical patent/GB2333858B/en
Priority to YU13199A priority patent/YU13199A/en
Priority claimed from PCT/GB1997/002427 external-priority patent/WO1998011458A1/en
Publication of GB9905770D0 publication Critical patent/GB9905770D0/en
Publication of GB2333858A publication Critical patent/GB2333858A/en
Application granted granted Critical
Publication of GB2333858B publication Critical patent/GB2333858B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
GB9905770A 1996-09-13 1997-09-09 Improvements in or relating to variable focus lenses Expired - Fee Related GB2333858B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9905770A GB2333858B (en) 1996-09-13 1997-09-09 Improvements in or relating to variable focus lenses
YU13199A YU13199A (en) 1996-09-13 1997-09-09 Improvements in or relating to variable focus lenses

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9619198.6A GB9619198D0 (en) 1996-06-25 1996-09-13 Improvements in or relating to variable focus lenses
GB9905770A GB2333858B (en) 1996-09-13 1997-09-09 Improvements in or relating to variable focus lenses
PCT/GB1997/002427 WO1998011458A1 (en) 1996-09-13 1997-09-09 Improvements in or relating to variable focus lenses

Publications (3)

Publication Number Publication Date
GB9905770D0 GB9905770D0 (en) 1999-05-05
GB2333858A GB2333858A (en) 1999-08-04
GB2333858B true GB2333858B (en) 2001-05-02

Family

ID=26310047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9905770A Expired - Fee Related GB2333858B (en) 1996-09-13 1997-09-09 Improvements in or relating to variable focus lenses

Country Status (1)

Country Link
GB (1) GB2333858B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161718A (en) * 1961-07-12 1964-12-15 William Kurasch Variable power fluid lens
US3664727A (en) * 1970-09-09 1972-05-23 Charles A O Donnell Educational lens device for demonstrating optical principles
US4261655A (en) * 1978-01-09 1981-04-14 Honigsbaum Richard F Biomechanically focused eyeglasses
GB2184562A (en) * 1985-12-10 1987-06-24 Joshua David Silver Liquid or semi-solid lens or mirror with system for adjusting focal length
US5233470A (en) * 1992-12-30 1993-08-03 Hsin Yi Foundation Variable lens assembly
US5541776A (en) * 1992-08-28 1996-07-30 Canon Kabushiki Kaisha Fluid type optical device
WO1996038744A1 (en) * 1995-06-01 1996-12-05 Joshua David Silver An optical apparatus and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161718A (en) * 1961-07-12 1964-12-15 William Kurasch Variable power fluid lens
US3664727A (en) * 1970-09-09 1972-05-23 Charles A O Donnell Educational lens device for demonstrating optical principles
US4261655A (en) * 1978-01-09 1981-04-14 Honigsbaum Richard F Biomechanically focused eyeglasses
GB2184562A (en) * 1985-12-10 1987-06-24 Joshua David Silver Liquid or semi-solid lens or mirror with system for adjusting focal length
US5541776A (en) * 1992-08-28 1996-07-30 Canon Kabushiki Kaisha Fluid type optical device
US5233470A (en) * 1992-12-30 1993-08-03 Hsin Yi Foundation Variable lens assembly
WO1996038744A1 (en) * 1995-06-01 1996-12-05 Joshua David Silver An optical apparatus and method

Also Published As

Publication number Publication date
GB2333858A (en) 1999-08-04
GB9905770D0 (en) 1999-05-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030909