BALL AND SOCKET FRAME FOR PROGRESSIVE EYE LENSES

Abstract

Abstract: Progressive lenses are corrective lenses used in . eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription at the top of the lens and reaches a maximum addition power, or the full reading addition, at the bottom of the lens. The length of the progressive power gradient on the lens surface depends on the design of the lens, with a final addition power between 0.75 and 3.50 dioptres. The addition value prescribed depends on the level of presbyopia of the patient. In general the older the patient, the higher the addition. They are also known as multifocal lenses, progressive addition lenses (PAL), varifocal lenses, progressive power lenses, graduated prescription lenses, or progressive spectacle lenses. The Solution provided in this invention “Ball and Socket Frame for Progressive Eye Lenses” is the ball and socket component in the frame which helps in rotation of the glass lenses in an upward and downward direction. It helps in reading during sleep position, prevents neck and eye strain from awkward and uncomfortable reading positions, as it allows users to lay completely flat in bed with a book propped up in their lap or viewing a television on a wall or table

Specification

FORM - 2
THE PATENTS ACT, 1970
(39 OF 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(see Section 10 & rule 13)

1. TITLE OF THE INVENTION:
Ball and Socket Frame for Progressive Eye Lenses

2. APPLICANT:
S.No NAME NATIONALITY ADDRESS
1 Saveetha Institute of Medical
and Technical Sciences
INDIAN
No: 162, Poonamallee High
Road, Velappanchavadi,
Chennai-600077

3. PREAMBLE TO THE DESCRIPTION:
The following specification describes the invention and how it is to be performed.

Bank : INDUSIND BANK
Branch : NUNGAMBAKKAM
( SAVEETHA UNIVERSITY )
DD No : 402474
DD Date: 19/10/2024
DD. Amount: 8900/-

Title of Invention:
Ball and Socket Frame for Progressive Eye Lenses
Field of Invention:
Opthalmology

Background of the Invention:
History:
The first patent for a PAL was British Patent 15,735, granted to Owen Aves with a 1907 priority date. This patent included the manufacturing process and design which was however never commercialized. Unlike modem PALs, it consisted of a conical back surface and a cylindrical front with opposing axis in order to create a power progression.

The Carl Zeiss AG & Varilux lenses were the first PAL of modem design. Bernard Maitenaz, patented Varilux in 1953, and the product .was introduced in 1959 by Societe des Lunetiers (now Essilor). The first Varilux lenses' surface structure
was however still close to a bifocal lens, with an upper, aberration-free half of the surface for far vision and a rather large "segment" for clear near vision. The breakthrough in user adaptation and comfort, as well as peripheral and dynamic
vision however occurred in 1972 with the introduction of Varilux 2, for which Maitenaz created a totally aspheric design and manufacturing process. Carl Zeiss AG developed freeform technology in 1983 with its own patented progressive series Gradal HS.

Introduction:
Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears.

Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness; however, without the specialized lenses, they are sometimes used for cosmetic purposes.

Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection on the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation. Glasses are worn for eye protection in some sports, such as squash.

Glasses wearers may use a strap to prevent the glasses from falling off. Wearers of glasses that are used only part of the time may have the glasses attached to a cord that goes around their neck to prevent the loss and breaking of the glasses.

Sunglasses allow for better vision in bright daylight and are used to protect one's eyes against damage from excessive levels of ultraviolet light. Typical sunglasses

lenses are tinted for protection against bright light or polarized to remove glare; photochromic glasses are clear or lightly tinted in dark or indoor conditions, but turn into sunglasses when they come into contact with ultraviolet light. Most over-the-counter sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be made. People with conditions that have photophobia as a primary symptom (like certain migraine disorders) often wear sunglasses or precision tinted glasses, even indoors and at night.

Specialized glasses may be used for viewing specific visual information, for example, 3D glasses for 3D films (stereoscopy). Sometimes glasses are worn purely for fashion or aesthetic purposes. Even with glasses used for vision correction, a wide range of fashions are available, using plastic, metal, wire, and other materials for frames.

Objectives:
1. To make it Suitable for ordinary people and person with medical problem.
2. To use in home or during travel.
3. To use in lying position for Reading on the beach or at home.
4. To read and watch conveniently & comfortably in sleeping position..

Summary of the Invention:
Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. Early progressive lenses were relatively crude designs. Right and left were identical
variable power lenses with distance and reading power centers in the upper and lower part of the lens, respectively. The glazing was made to accommodate eye position changes from distance viewing to reading. The point of reading is about 14 mm below and 2 mm to the nasal side in comparison to distance viewing. By tilting the
reading power towards the nasal side in perfect symmetry, appropriate reading power was given to the wearer.

The symmetric design, however, was difficult to accept for patients, because the eyes in general work asymmetrically. When you look to your right, your right eye views distal (i.e. looking through the lens near to the arm of the spectacles) while your left eye views nasal (i.e. looking through the lens near to the bridge). Modem sophisticated progressive lenses are designed asymmetrically for greater patient acceptance and include special designs to cater to many separate types of wearer
application: for example progressive addition lenses may be designed with distance to intermediate or intermediate to near prescriptions specifically for use as an occupational lens, or to offer enlarged near and intermediate view areas.

The typical progressive lens is produced from a so-called semi-finished lens. The semi-finished lens is molded with an asymmetrical power pattern on the front. On the back side a custom surfacing is made to adjust the power for each patient. This
method is however problematic, especially for astigmatic prescriptions. The reason being that the semi-finished front pattern is designed for a spherical prescription. Freeform designs are tailored to each prescription and do not have this problem.

Bifocal, trifocal, and progressive lenses generally require a taller lens shape to leave
room for the different segments while preserving an adequate field of view through each segment. Frames with rounded edges are the most efficient for correcting myopic prescriptions, with perfectly round frames being the most efficient. Before the advent of eyeglasses as a fashion item, when frames were constructed with only functionality in mind, virtually all eyeglasses were either round, oval, panto, rectangular, octagonal, or square. It was not until glasses
began to be seen as an accessory that different shapes were introduced to be more aesthetically pleasing than functional.

The Solution provided in this invention "Ball and Socket Frame for Progressive Eye Lenses" is the ball and socket component in the frame which helps in rotation of the glass lenses in an upward and downward direction.

It helps in reading during sleep position, prevents neck and eye strain from awkward and uncomfortable reading positions, as it allows users to lay completely flat in bed with a book propped up in their lap or viewing a television on a wall or table.

Detailed description:

Some people find them more cosmetically attractive. Because bifocals and related
designs are associated with old age, proponents have suggested the lack of visible lines makes a progressive lens appear similar to the single vision lenses worn before the onset of presbyopia.

Prism bed spectacles allow users to read text or watch television from a lying down position, without having to crane or bend their neck. This reading position helps prevent neck and eye strain from awkward and uncomfortable reading positions, as it allows users to lay completely flat in bed with a book propped up in their lap or viewing a television on a wall or table.

PERFECT FOR RECOVERY OR LIMITED MOBILITY - These lay flat bed reading glasses help bedridden patients, those recovering from surgery, pregnant
women on bed rest, or anyone else needing to remain in bed for long periods of time to experience relief and re-engage with entertainment. Also an excellent choice for
anyone else who spends time reading or watching TV in bed and struggles to find a comfortable or sustainable position.

Adjustable-focus eyeglasses might be used to replace bifocals or trifocals, or might be used to produce cheaper single-vision glasses (since they do not have to be custommanufactured for every person).

The Solution provided in this invention "Ball and Socket Frame for Progressive Eye Lenses" is the ball and socket component in the frame which helps in rotation of the glass lenses in an upward and downward direction.

It helps in reading during sleep position, prevents neck and eye strain from awkward and uncomfortable reading positions, as it allows users to lay completely flat in bed with a book propped up in their lap or viewing a television on a wall or table.

Advantages:
1. Suitable for ordinary people and person with medical problem.
2. Used for home or travel use.
3. Lying for Reading on the beach or at home.
4. Not only read and watch conveniently & comfortably.
5. Protects the eyesight.

CLAIM
1/We Claim,

Claim 1: Ball and Socket Frame for Progressive Eye Lenses, said Ball and
Socket Frame for Progressive Eye Lenses includes:
a Ball (1),
a Socket (2)

Claim 2: Ball and Socket Frame for Progressive Eye Lenses
of Claim 1, Wherein the Ball (1) portion of the frame fits to the Socket (2) portion
of the frame.

Claim 3: Ball and Socket Frame for Progressive Eye Lenses
of Claim 1, Wherein the Ball (1) portion moves Up and Down direction only, which
facilitates the lenses to move and adjust accordingly.

Claim 4: Ball and Socket Frame for Progressive Eye Lenses
of Claim 1, Wherein the Socket (2) has an undercut to hold the ball firmly.

Claim 5: Ball and Socket Frame for Progressive Eye Lenses
of Claim 1, Wherein the Ball (1) and Socket (2) is made up of Polycarbonate, metal,
plastic or fibre etc material.


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