JPS6467312A - Forming method for optical element - Google Patents

Forming method for optical element

Info

Publication number
JPS6467312A
JPS6467312A JP62226092A JP22609287A JPS6467312A JP S6467312 A JPS6467312 A JP S6467312A JP 62226092 A JP62226092 A JP 62226092A JP 22609287 A JP22609287 A JP 22609287A JP S6467312 A JPS6467312 A JP S6467312A
Authority
JP
Japan
Prior art keywords
lower punches
forming
radii
optical element
curvature
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.)
Pending
Application number
JP62226092A
Other languages
Japanese (ja)
Inventor
Naohito Orito
Makio Yamada
Kazunari Tokuda
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP62226092A priority Critical patent/JPS6467312A/en
Publication of JPS6467312A publication Critical patent/JPS6467312A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B21/00—Severing glass sheets, tubes or rods while still plastic
    • C03B21/04—Severing glass sheets, tubes or rods while still plastic by punching out

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent an optical surface from generating creases, unevenness, recessed and projected sections or protrusions and make transferability of a lens to a forming die good by carrying out a forming by means of a plurality of couples of upper and lower punches with radii of curvature ranging from small to large ones in a lens forming surface of the upper and lower punches in multi-stages. CONSTITUTION:Forming surfaces 26a and 27a of respective upper and lower punches 26 and 27 of respective first-third devices 20a-20c are form into radii of curvature from a small molded surface 26a to a large forming surface 26c in order starting from a first device 20a to a third device 20c, being able to be formed into the form of optical element requiring the radii of curvature of the upper and lower punches 26 and 27 of a third forming device 20c. In order to form optics, a glass blank 40c of a shape with which air or the like is hard to reside between an optical material and the upper and lower punches is formed in multistage continuously one by one by said upper and lower punches 26 and 27, and optical element having desired lens surface are formed eventually. Therefore, optics which store little remaining air in the central section and are of good transferability to the formed surface of the punches can be formed.
JP62226092A 1987-09-09 1987-09-09 Forming method for optical element Pending JPS6467312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62226092A JPS6467312A (en) 1987-09-09 1987-09-09 Forming method for optical element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62226092A JPS6467312A (en) 1987-09-09 1987-09-09 Forming method for optical element

Publications (1)

Publication Number Publication Date
JPS6467312A true JPS6467312A (en) 1989-03-14

Family

ID=16839698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62226092A Pending JPS6467312A (en) 1987-09-09 1987-09-09 Forming method for optical element

Country Status (1)

Country Link
JP (1) JPS6467312A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0369520A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens
JPH0369519A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens
JPH0369521A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens
JPH0369522A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0369520A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens
JPH0369519A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens
JPH0369521A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens
JPH0369522A (en) * 1989-08-04 1991-03-25 Matsushita Electric Ind Co Ltd Method for molding lens

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