GB2292815A - Spectacle frame for auxiliary lenses - Google Patents

Spectacle frame for auxiliary lenses Download PDF

Info

Publication number
GB2292815A
GB2292815A GB9417813A GB9417813A GB2292815A GB 2292815 A GB2292815 A GB 2292815A GB 9417813 A GB9417813 A GB 9417813A GB 9417813 A GB9417813 A GB 9417813A GB 2292815 A GB2292815 A GB 2292815A
Authority
GB
United Kingdom
Prior art keywords
spectacle frame
lenses
lens
auxiliary lenses
auxiliary
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.)
Withdrawn
Application number
GB9417813A
Other versions
GB9417813D0 (en
Inventor
Bernard John Percy Howlett
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 GB9402374A external-priority patent/GB9402374D0/en
Application filed by Individual filed Critical Individual
Priority to GB9417813A priority Critical patent/GB2292815A/en
Publication of GB9417813D0 publication Critical patent/GB9417813D0/en
Publication of GB2292815A publication Critical patent/GB2292815A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C9/00—Attaching auxiliary optical parts
    • G02C9/04—Attaching auxiliary optical parts by fitting over or clamping on
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/10—Special mounting grooves in the rim or on the lens
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
    • G02C7/086—Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C9/00—Attaching auxiliary optical parts

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Eyeglasses (AREA)

Abstract

A spectacle frame is construsted so that it may carry two lenses for each eye. Ears 1 may retain an auxiliary lens, which may be removed for cleaning. <IMAGE>

Description

IMPROVED SPECTACLES SlDny pairs of spectacles otherwise in good condition are discarded because the owners' eyes have changed lnd the lenses no longer suit them.
hitherto it has been that the patient undergoes an eve test with a view to complete replacement of the spectacles or t the very least replacement lenses.
The present invention offers an alternative solution provided no medical reason prevents its use. It is to fit auxiliary strength-adjustment lenses in addition to the prescription lenses already fitted for the l)urpose of compensating for the changes which have taken place in the pntient's eyes.
Analysis of the progressive change which takes place in normal health shows that the mein correction changs is to the " strength " which means that the change applies only to the spherical correction of the total prescription and n simple update of this portion can be made with a low strength mass-produced lens if necessary without the need to remake the spectacles anew. Any other focussing error in the patient's eyes, (stigmatism ), has already been taken care of in the original prescription lenses lnd that correction continues to be effective.
Tn the first application of this invention a spectncles frame is fitted ab initio with means for retaining n second lens for each eye on n permanent basis Figure 1 illustrates how an auxiliary lens may be retained by a modification to the plastic moulding of the frame to include to "earS", ( items 1 ).
behind which the auxiliary lens. is inserted.
The method by which the lens nay be inserted is shown in Figure 2. A twisting action is used. 'tev- easing this action permits the lens to be removed from time to time for cleaning purposes.
In a second application of the invention it has been found feasible to alter the character of the spectacle from "Normal" to "di-focal" b fitting auxiliary bi-focal lenses of dual strength, (standard) or graded
strength, (Variluxp. Having only a low power in terms of dioptres, the required strength is very similar for any patient. expert fitting will be reauired because of the different eye to eye distance of each patient.
In a third aspect of the invention the auxiliary and prescription lenses are interchanged so that the cheaper auxiliary lens goes in the front thereby protecting the prescription lens. This application would be advantageous in some industrial environments, and the function would be similar to approved Industrial Glasses.
In the r'ourth application of this invention a normal spectacle frame is modified to receive means for ret aining an auxiliary lens. The means for doing this ars typically R splayed wire clip forced into small holes drilled in the frame in approximately the same position as the "ears" of Figure 1. A frame so fitted is depicted in Figure 3. Other methods are possible.
Advantageously in all applications of the invention the curvature of adjacent surfaces should be such that the centres do not touch causing scuffing of that part of the lens within the field of view.

Claims (1)

  1. (1) A spectacle frame constructed so that it nay carry two lenses for each eye instead of the usual one only, to fulfil the applications (1), (2), and (3) herein before described.
    (2) A spectacle frame modified as described in aspect (4) to enable it to serve the same functions as in Claim (1) (3) Fixtures and fittings as described in aspect (4) to enable a frame to be modified as in aspect (4).
GB9417813A 1994-02-08 1994-09-05 Spectacle frame for auxiliary lenses Withdrawn GB2292815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9417813A GB2292815A (en) 1994-02-08 1994-09-05 Spectacle frame for auxiliary lenses

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9402374A GB9402374D0 (en) 1994-02-08 1994-02-08 Improvements to spectacles
GB9417813A GB2292815A (en) 1994-02-08 1994-09-05 Spectacle frame for auxiliary lenses

Publications (2)

Publication Number Publication Date
GB9417813D0 GB9417813D0 (en) 1994-10-26
GB2292815A true GB2292815A (en) 1996-03-06

Family

ID=26304290

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9417813A Withdrawn GB2292815A (en) 1994-02-08 1994-09-05 Spectacle frame for auxiliary lenses

Country Status (1)

Country Link
GB (1) GB2292815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2398131A (en) * 2003-02-10 2004-08-11 Great Champ Asia Ltd Spectacle frame with clamp for detachable lens

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB315113A (en) * 1928-07-31 1929-07-11 Francis Howard Wheway Improvements relating to eye protective devices
GB310322A (en) * 1928-04-23 1930-01-09 Josef Pietsch
GB442825A (en) * 1935-06-17 1936-02-17 Edwin Herbert Land Improvements in and relating to sun glasses
GB610452A (en) * 1946-04-05 1948-10-15 A E Newbold Ltd Improvements in or relating to spectacles
GB638428A (en) * 1948-06-18 1950-06-07 Myer Harris Marks Improvements in eye glasses
GB1412364A (en) * 1972-12-28 1975-11-05 Wells Pty Ltd Martin Spectacle frames
US4101208A (en) * 1977-01-17 1978-07-18 Page Louis J Ophthalmic device for tensionally securing lenses thereto
US4338004A (en) * 1979-11-09 1982-07-06 Vosper George W Snap-in lens for glasses
US4796986A (en) * 1988-03-14 1989-01-10 Gowdy Jr Wilford B Combination safety glasses
US5017001A (en) * 1989-10-27 1991-05-21 Norio Kooketsu Front lens for sunglasses
US5056906A (en) * 1990-05-24 1991-10-15 Min Akiyoshi Prescription lens attachment for sunglasses

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB310322A (en) * 1928-04-23 1930-01-09 Josef Pietsch
GB315113A (en) * 1928-07-31 1929-07-11 Francis Howard Wheway Improvements relating to eye protective devices
GB442825A (en) * 1935-06-17 1936-02-17 Edwin Herbert Land Improvements in and relating to sun glasses
GB610452A (en) * 1946-04-05 1948-10-15 A E Newbold Ltd Improvements in or relating to spectacles
GB638428A (en) * 1948-06-18 1950-06-07 Myer Harris Marks Improvements in eye glasses
GB1412364A (en) * 1972-12-28 1975-11-05 Wells Pty Ltd Martin Spectacle frames
US4101208A (en) * 1977-01-17 1978-07-18 Page Louis J Ophthalmic device for tensionally securing lenses thereto
US4338004A (en) * 1979-11-09 1982-07-06 Vosper George W Snap-in lens for glasses
US4796986A (en) * 1988-03-14 1989-01-10 Gowdy Jr Wilford B Combination safety glasses
US5017001A (en) * 1989-10-27 1991-05-21 Norio Kooketsu Front lens for sunglasses
US5056906A (en) * 1990-05-24 1991-10-15 Min Akiyoshi Prescription lens attachment for sunglasses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2398131A (en) * 2003-02-10 2004-08-11 Great Champ Asia Ltd Spectacle frame with clamp for detachable lens

Also Published As

Publication number Publication date
GB9417813D0 (en) 1994-10-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)