KR890014098U - Multi-purpose frequency change eyeglass - Google Patents

Multi-purpose frequency change eyeglass

Info

Publication number
KR890014098U
KR890014098U KR2019870021611U KR870021611U KR890014098U KR 890014098 U KR890014098 U KR 890014098U KR 2019870021611 U KR2019870021611 U KR 2019870021611U KR 870021611 U KR870021611 U KR 870021611U KR 890014098 U KR890014098 U KR 890014098U
Authority
KR
South Korea
Prior art keywords
frequency change
purpose frequency
change eyeglass
eyeglass
frequency
Prior art date
Application number
KR2019870021611U
Other languages
Korean (ko)
Other versions
KR900011229Y1 (en
Inventor
신석균
Original Assignee
신석균
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
Application filed by 신석균 filed Critical 신석균
Priority to KR2019870021611U priority Critical patent/KR900011229Y1/en
Publication of KR890014098U publication Critical patent/KR890014098U/en
Application granted granted Critical
Publication of KR900011229Y1 publication Critical patent/KR900011229Y1/en

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
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G02C7/063—Shape of the progressive surface

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)
KR2019870021611U 1987-12-08 1987-12-08 Spectacles KR900011229Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870021611U KR900011229Y1 (en) 1987-12-08 1987-12-08 Spectacles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870021611U KR900011229Y1 (en) 1987-12-08 1987-12-08 Spectacles

Publications (2)

Publication Number Publication Date
KR890014098U true KR890014098U (en) 1989-08-10
KR900011229Y1 KR900011229Y1 (en) 1990-12-22

Family

ID=19270180

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870021611U KR900011229Y1 (en) 1987-12-08 1987-12-08 Spectacles

Country Status (1)

Country Link
KR (1) KR900011229Y1 (en)

Also Published As

Publication number Publication date
KR900011229Y1 (en) 1990-12-22

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19951219

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee