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Class Information
Number: 351
Name: Optics: eye examining, vision testing and correcting >
Description: This class corresponds generally in subject matter to optometry, and includes eye examining and vision testing instruments. These instruments must include some optical structure or they must operate in conjunction with the optical or vision path of the eye. Included also are these instruments combined with eye exercising and/or training devices. Included also are certain accessories such as test charts and/or targets which may involve projection, illuminators and supports which are peculiar to these instruments. Included also are methods of operating or using these instruments and not generally classifiable.










Class Number Class Name No. of Patents
351/200

Eye examining or testing instrument

323
351/203

Eye exercising or training type

168
351/201

For fusion and space perception testing (e.g., stereoscopic vision)

59
351/202

Of abnormal muscular functioning

22
351/204

For interpupillary distance measuring or lens positioning

159
351/246

Methods of use

859
351/247

For contact lens fitting

127
351/205

Objective type

993
351/214

Including diaphram or slit

256
351/209

Including eye movement detection

322
351/210

Using photodetector

362
351/206

Including eye photography

913
351/208

Having means to detect proper distance or alignment (i.e., eye to instrument)

311
351/207

Having spurious reflection blocking

45
351/221

Including illuminator

1030
351/216

Including lens selectively insertable in optical path

102
351/217

On rotary disc

21
351/218

Hand held type

58
351/213

Including light filter or absorber

85
351/215

Including light polarizing means

52
351/211

Including projected target image

548
351/212

For cornea curvature measurement

455
351/220

Including reflectors with off-set surfaces

23
351/219

With contact lens

167
351/222

Subjective type

159
351/237

Including target image projection

163
351/238

Tachistoscope type

8
351/239

Including test chart or target

213
351/241

Astigmatism type

12
351/242

Chromaticity type

45
351/244

Having support or cabinet

34
351/243

Illuminated

227
351/240

Stereoscopic type

44
351/227

Including trial frame

31
351/231

Removably attachable to eye glass frame

9
351/230

With individual lens holder

8
351/228

With multifocal lens

12
351/229

With plural lens carrier

12
351/233

Lens or filter selectively insertable in optical path

48
351/234

Mounted on rotatable disc

33
351/235

Having plural disc carrier

31
351/236

Movable along optical axis

7
351/224

Perimeter type

136
351/226

With bowl type screen

56
351/225

With rotatable arm

10
351/223

Self examining type

67
351/232

With light polarzing lens

26
351/245

Support

114
351/41

Spectacles and eyeglasses

595
351/103

Brace arm or semi-rimless mounting

92
351/104

Arm or rim of plastic or of different material (e.g., metal and plastic)

2
351/109

Brace arm extends along edge of lens

12
351/108

Brace arm supports lens at two spaced points or constitutes a partial rim

16
351/105

Detachable brace arm

20
351/106

Screwless lens mounting

156
351/107

With adjustable lens or frame part

17
351/124

Bridges

123
351/128

Adjustable

70
351/125

Crossbar type

6
351/126

Flexible

36
351/127

Ball or chain type

0
351/129

Reinforced

12
351/130

With auxiliary support

21
351/133

With connectors or straps

22
351/134

Unitary bridge and straps

1
351/135

With lens clamping straps

5
351/131

With nose grip or guard integral with bridge

21
351/132

With nose grip, nose guard, pad, or cushion

38
351/158

Combined

777
351/140

Connectors

90
351/142

Strap type

3
351/148

Adjusting

7
351/144

With cementing or fusing

8
351/152

With clamping arms

7
351/145

With cushion around lens screw or bolt

5
351/146

Sleeve or bushing

18
351/149

With interengaging projection and recess

33
351/143

With particular bracing bar or stud

3
351/150

With resilient parts (e.g., resilient strap arms)

1
351/151

Spring between lens and strap

0
351/147

With serrated interengaging parts

5
351/153

With particular hinge

329
351/141

With screw locking means

29
351/83

Continuous rim mounting

80
351/87

Nose guards or pads integral with frame

10
351/88

Nose guards or pads removable or adjustable

39
351/85

Upper rim portion slotted

16
351/89

With brace arm temple support

2
351/86

With lens retaining or locking means

150
351/84

With rotating means for multifocal lenses

8
351/43

Floating or underwater type

119
351/63

Folding

93
351/64

Pince-nez type

0
351/54

Invertible or reversible multifocal type

15
351/154

Lens linings or rims

101
351/59

Lens pivots in and out of optical path

55
351/42

Lens repair devices

11
351/56

Lorgnette type

8
351/178

Methods (e.g., securing lenses in mountings)

121
351/136

Nose pads or cushions

109
351/137

Adjustable, rockable, or pivotable

91
351/138

Detachable

96
351/139

With cover or coating

39
351/159

Ophthalmic lenses or blanks

601
351/167

Cataract correction type

28
351/160R

Eye contact type

746
351/162

Colored

236
351/160H

Hydrophilic

604
351/161

Multifocal

421
351/176

Focus and/or astigmatism correction

97
351/173

Image size (aniseikonia) correction

4
351/177

Methods

890
351/168

Multifocal

216
351/169

Gradually varying focal power

301
351/172

Multiple elements

80
351/171

Three or more foci

31
351/170

With prismatic segment

22
351/175

Prismatic type

41
351/174

With beveled, polished or reinforced edges

20
351/166

With lens protective layers

184
351/163

With light filtering means

367
351/164

Multifocal

49
351/165

With sections of different light absorption

102
351/65

Pince-nez type (including pince-nez bridges, nose grips and nose pads therefor)

9
351/69

Lens and nose grip movable on flexible bridge

2
351/78

Nose pads or cushions

22
351/80

Detachable

24
351/82

Fluid-filled or suction type

4
351/81

Perforated or serrated

4
351/79

Plural pad parts engage the nose

3
351/67

Plural bridges

2
351/70

Posts or studs connecting bridge and nose grip

1
351/76

With adjustable or rockable nose grips or pads

9
351/77

With ball joints

3
351/66

With ear chain or temple

1
351/68

With resilient extensible bridge

2
351/71

With spring biased nose grips

2
351/72

With pivoting levers

0
351/73

With flat spiral springs

0
351/74

With springs below bridge

3
351/75

With springs encased

0
351/110

Rimless mounting

170
351/53

Shooting type

15
351/90

Split rim mounting

68
351/100

Clamp and temple pivot screw coincident on rim clamping arm

3
351/99

Clamp and temple pivot screw spaced along rim clamping arm

9
351/102

Combined metal and plastic rims

0
351/95

Expansible and contractible lens rim

38
351/96

Locking member secures lens against rotation

9
351/101

Metal clamps embrace the rims and connect to bridge and/or temples

4
351/97

Split connected by u-clamps or pivot links

18
351/98

Split on nasal side of rim (i.e., at bridge)

10
351/94

With auxiliary bridge

3
351/93

With brace arm supports for temple or lens

0
351/91

With brow pieces or top arms

6
351/92

Screwless lens mounting

49
351/111

Temples

204
351/116

Detachable

70
351/118

Extensible (e.g., with adjustable sleeve member

94
351/120

Inclined to lens plane

77
351/114

Resilient or flexible

68
351/115

Reversible or axially rotatable

29
351/113

Spring biased

142
351/119

Two-part type (e.g., jointed)

111
351/121

With connector

212
351/117

With covered core or rod (e.g., reinforced)

24
351/123

With head or ear engaging attachments

173
351/112

With pocket clip or clasp

39
351/122

With skin protecting earpiece covering

51
351/61

U-shape or half-moon lens below eye level

16
351/44

With antiglare or shading

356
351/45

Partially occluding the light-path area

127
351/46

Perforated opaque plates or shields

76
351/49

Polarizing

149
351/47

Removable and/or adjustable filters or screens (e.g., clip-on type)

443
351/48

Spring biased

39
351/57

With auxiliary lenses movable in and out of the optical path (e.g., clip-on type attachments)

413
351/58

Spring biased or secured by friction members

51
351/51

With decoration or ornamentation

118
351/52

Detachably secured

107
351/60

With lens suspension bar (e.g., torsion bar)

7
351/62

With moisture prevention or absorption

113
351/50

With rear-view reflectors

52
351/155

With support or holder (e.g., on hat or cap)

146
351/157

Neck retainers

123
351/156

With head embracing bow or chain

194
351/55

With vertical adjustment of multifocal lenses

18
 
 
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