EP0182825A1 - Blendschutzbrillenglas für die bildschirmarbeit - Google Patents
Blendschutzbrillenglas für die bildschirmarbeitInfo
- Publication number
- EP0182825A1 EP0182825A1 EP85902471A EP85902471A EP0182825A1 EP 0182825 A1 EP0182825 A1 EP 0182825A1 EP 85902471 A EP85902471 A EP 85902471A EP 85902471 A EP85902471 A EP 85902471A EP 0182825 A1 EP0182825 A1 EP 0182825A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- light attenuation
- area
- glare glasses
- glare
- 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- Withdrawn
Links
Classifications
-
- 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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/105—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having inhomogeneously distributed colouring
Definitions
- the invention relates to anti-glare glasses according to the preamble of patent claim 1.
- Such anti-glare glasses are known for example from DE-PS 665 880 and are intended in particular for motorists and cyclists.
- the luminance levels of screens commonly used today are typically between 1 and 20 cd / m- * and thus by a factor of 6 to 100 (l) below the ambient luminance level.
- this large difference in luminance makes work on screens considerably more difficult and is a main factor for the premature fatigue when working on screens.
- anti-glare glasses make work on screens easier and in particular can reduce fatigue.
- Glare protection glasses which are designed for work in particular on data display devices, computers with a screen, etc., have so far not been known.
- the invention is therefore the object of a spezi ⁇ elles anti-glare lens for screen work to be applied ⁇ 3 efaen -
- This object is achieved according to the invention in that an anti-glare lens according to the preamble of claim 1 is assumed, and this anti-glare lens is designed in accordance with the characterizing part of claim 1.
- the work glasses designed according to the invention result in improved visual conditions both for the non-defective and for the defective.
- the upper area with more than 30% light attenuation prevents direct glare from bright window surfaces or ceiling lights, without reducing the contrast on the screen - as with a homogeneously colored glass. These glare are, as has been recognized according to the invention, the cause of a concentration and thus a reduction in work performance.
- Claim 2 specifies a preferred arrangement of the area limit in relation to the main viewpoint, i.e. the point of view of the top edge of the screen. This relation is valid for single and multi-strength glasses.
- Claim 3 causes a uniform impression of brightness, which is easy on the eyes and anti-fatigue. However, it is particularly advantageous to make the lower area homogeneous as well.
- the anti-glare glasses according to the invention can of course also be used by people with defective vision. It is particularly important to note that the visual
- the number of accommodation changes per day can range from 10,000 to 30,000. To the number of
- the visual distances to the screen are between 50 to 90 cm (preferably between 50 and 70 cm), to the document between 35 to 55 cm and to the keyboard, between 45 and 55 cm.
- the large near part provided in the anti-glare spectacle lens according to the invention allows comfortable viewing on the screen without an unnatural head posture.
- Typical addition values of the near part are between 0.75 and 3.0 dpt; the addition of the near part is preferably up to 2.5 dpt.
- the refractive power of the base part is selected so that the press byope looks at the screen through the base part and it does not require more than 1/2 of the remaining accommodation for this.
- the refractive index of the base part is typically 1 dpt above the value that would result from the normal "design" of the multifocal glass.
- the base part of which is also designed for screen work
- the near part is dimensioned such that no more than 1/2 of the remaining accommodation is required for the document or the keyboard (claim 8).
- the c areas provided in the lateral parts of the glass with high light attenuation further reduce the stress and thus the fatigue, particularly when the screen is "as a dark spot" in front of a bright area (claim 20).
- the light attenuation in the upper and optionally the lateral areas is approximately 30 to 70%, preferably approximately 70% (claim 21).
- a green coloring of the areas with high light attenuation is perceived as particularly pleasant both with 5 green and with differently colored screens, such as amber screens.
- the green coloring absorbs particularly the disturbing blue component in fluorescent lamps, which frequently occur in connection with screen workstations.
- the anti-glare spectacle lens according to the invention is preferably non-reflective according to claim 23. Reflections, for example from ceiling lights, are not anti-reflective
- Spectacle lens inner surfaces in the order of the basic o luminance of screens, so that these reflections can be very disturbing.
- Fig. 3 an anti-glare three-strength glass according to the invention.
- the anti-glare glasses according to the invention shown in FIGS. 1 to 3 consistently have an upper region 1 with high light attenuation and a lower region 2 with significantly lower light attenuation.
- the area boundary 3 between the upper area 1 and the lower area 2 is approximately 1-2 mm above the main viewing point D for the screen work, ie. H. above the viewpoint on the top edge of the screen.
- Transition zone 4 with a width of about 1-2 mm. In this transition zone, the light attenuation decreases from the value of area 1 to the value of area 2.
- the end of the transition zone is approx. 2-4 mm above the
- areas 6 and 6 'with high light attenuation can be provided on the sides of the anti-glare glasses, which are only shown in broken lines in FIG. These areas largely eliminate interference from the sides.
- the light attenuation in the upper region 1 is approximately 60% in the exemplary embodiment shown.
- the color is green.
- the light attenuation in the lower area 2 is low. Furthermore, the glass in the lower area 2 cannot be colored at all.
- the transition zone 4 avoids diffraction effects which could arise at sharp area boundaries 3 between areas 1 and 2.
- the light attenuation in the transition zone decreases from the value of the upper region 1 to the value of the lower region 2.
- the dimensions of the near part N and the intermediate part Z are also given in mm with a diameter of the tubular glass of 74 mm. Furthermore, the nasal displacement of the near and intermediate part, which supports the convergence of the eye when looking downwards, and the position of the area boundary 3 between the upper area 1 with high light attenuation and the lower area 2 with significantly less light attenuation are specified.
- the range limit 3- j the distance from the highest point of the curved dividing line near-end / base part in the exemplary embodiment shown is 3 mm, is selected when the base part is remotely corrected.
- the area limit 3 is approximately 3 mm above the uppermost point of the curved dividing line between the intermediate part and the far part.
- Reflections are further reduced by the curved dividing line between the individual parts of the multi-strength lenses.
- the invention has been described above with reference to exemplary embodiments.
- the area boundary between the area with strong light attenuation and the area with lower light attenuation can also coincide with the dividing lines.
- the anti-glare spectacle lens according to the invention preferably consists of plastic, for example diethylene glycol bis-allyl carbonate.
- the coloring can be carried out in a dip bath in a manner known per se, the transition zone 4 being able to be produced by a bath movement.
- the transition zone in which the light attenuation only decreases to an intermediate value, can easily be produced by masking off the lower area.
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Polymerisation Methods In General (AREA)
- Optical Filters (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8416289U | 1984-05-26 | ||
DE8416289 | 1984-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0182825A1 true EP0182825A1 (de) | 1986-06-04 |
Family
ID=6767352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85902471A Withdrawn EP0182825A1 (de) | 1984-05-26 | 1985-05-24 | Blendschutzbrillenglas für die bildschirmarbeit |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0182825A1 (de) |
AU (1) | AU4430985A (de) |
DK (1) | DK31186A (de) |
FI (1) | FI860357A (de) |
NO (1) | NO860265L (de) |
WO (1) | WO1985005701A1 (de) |
ZA (1) | ZA853987B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3106248A (en) * | 1962-01-30 | 1963-10-08 | Luther H Blount | Fairing for a controllable pitch propeller |
US4872749A (en) * | 1984-09-14 | 1989-10-10 | American Optical Corporation | Lens for video terminal screen |
US5975695A (en) * | 1997-09-10 | 1999-11-02 | Intercast Europe S.P.A. | Optical element for use in eye-protecting devices |
EP0992832A1 (de) * | 1998-10-07 | 2000-04-12 | Intercast Europe S.P.A. | Optisches Element zur Anwendung in Augenschutzvorrichtungen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2076432A (en) * | 1934-09-14 | 1937-04-06 | American Optical Corp | Ophthalmic lens |
FR1383104A (fr) * | 1963-11-13 | 1964-12-24 | Mattey S A A | Lunettes évitant l'éblouissement |
US3963330A (en) * | 1973-12-20 | 1976-06-15 | Vivien Boniuk | Apparatus for improving human visual response during conditions of reduced ambient illumination |
DE2803047C2 (de) * | 1978-01-25 | 1983-07-14 | Fa. Carl Zeiss, 7920 Heidenheim | Mehrstärken-Brillenlinse |
US4470673A (en) * | 1982-01-11 | 1984-09-11 | Foggles, Inc. | Eyewear with translucent superior field of view |
-
1985
- 1985-05-24 WO PCT/DE1985/000179 patent/WO1985005701A1/de not_active Application Discontinuation
- 1985-05-24 AU AU44309/85A patent/AU4430985A/en not_active Abandoned
- 1985-05-24 EP EP85902471A patent/EP0182825A1/de not_active Withdrawn
- 1985-05-27 ZA ZA853987A patent/ZA853987B/xx unknown
-
1986
- 1986-01-21 DK DK31186A patent/DK31186A/da not_active Application Discontinuation
- 1986-01-24 NO NO860265A patent/NO860265L/no unknown
- 1986-01-24 FI FI860357A patent/FI860357A/fi not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8505701A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU4430985A (en) | 1985-12-31 |
DK31186D0 (da) | 1986-01-21 |
WO1985005701A1 (en) | 1985-12-19 |
DK31186A (da) | 1986-01-21 |
FI860357A0 (fi) | 1986-01-24 |
NO860265L (no) | 1986-01-24 |
FI860357A (fi) | 1986-01-24 |
ZA853987B (en) | 1987-02-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19860619 |
|
R17P | Request for examination filed (corrected) |
Effective date: 19860819 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KOEPPEN, WERNER Inventor name: HARTMANN, ERWIN |
|
17Q | First examination report despatched |
Effective date: 19870928 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19880608 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KOEPPEN, WERNER Inventor name: HARTMANN, ERWIN |