JPS6461328A - Glass lens and device for forming thereof - Google Patents

Glass lens and device for forming thereof

Info

Publication number
JPS6461328A
JPS6461328A JP21977987A JP21977987A JPS6461328A JP S6461328 A JPS6461328 A JP S6461328A JP 21977987 A JP21977987 A JP 21977987A JP 21977987 A JP21977987 A JP 21977987A JP S6461328 A JPS6461328 A JP S6461328A
Authority
JP
Japan
Prior art keywords
forming
surface roughness
glass material
glass lens
optical axis
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
JP21977987A
Other languages
Japanese (ja)
Inventor
Yoshiki Matsui
Shigeya Sugata
Jun Inahashi
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 JP21977987A priority Critical patent/JPS6461328A/en
Publication of JPS6461328A publication Critical patent/JPS6461328A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/049—Re-forming tubes or rods by pressing
    • C03B23/0496—Re-forming tubes or rods by pressing for expanding in a radial way, e.g. by forcing a mandrel through a tube or rod
    • 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
    • C03B2215/00—Press-moulding glass
    • C03B2215/02—Press-mould materials
    • C03B2215/03—Press-mould materials defined by material properties or parameters, e.g. relative CTE of mould parts
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/41—Profiled surfaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/70—Horizontal or inclined press axis
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0018—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for preventing ghost images

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

PURPOSE:To readily prevent occurrence of flare or ghost without requiring coating of an antireflection coating, by forming the outer peripheral surface of a glass lens so as to provide respective different specific surface roughnesses in the optical axis and radial directions. CONSTITUTION:This glass lens (12a) is formed so as to provide an outer peripheral surface having 0-2mum surface roughness in the optical axis direction and 2-20mum surface roughness in the radial direction. The above-mentioned glass lens (12a) is produced by using a multipart drum mold 13 formed so as to provide 0-2mum surface roughness in the optical axis direction and 2-20mum surface roughness in the radial direction on the inner surface from a material having a thermal expansion coefficient same as or smaller than that of a glass material 12 to be formed, holding the glass material 12 by this multipart drum mold 13, heating the glass material 12 in a heating furnace 8, conveying the drum mold 13 to a space between a pair of forming molds 3 and 4 by a conveying member 17 and press forming the glass material 12 with the forming molds 3 and 4.
JP21977987A 1987-09-02 1987-09-02 Glass lens and device for forming thereof Pending JPS6461328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21977987A JPS6461328A (en) 1987-09-02 1987-09-02 Glass lens and device for forming thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21977987A JPS6461328A (en) 1987-09-02 1987-09-02 Glass lens and device for forming thereof

Publications (1)

Publication Number Publication Date
JPS6461328A true JPS6461328A (en) 1989-03-08

Family

ID=16740870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21977987A Pending JPS6461328A (en) 1987-09-02 1987-09-02 Glass lens and device for forming thereof

Country Status (1)

Country Link
JP (1) JPS6461328A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002318302A (en) * 2001-02-16 2002-10-31 Nippon Sheet Glass Co Ltd Rod lens and rod lens array
JP2008094658A (en) * 2006-10-12 2008-04-24 Canon Inc Method for producing optical element and optical element
US11785323B1 (en) 2022-05-27 2023-10-10 Samsung Electronics Co., Ltd. Camera module including refractive member and electronic device including refractive member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002318302A (en) * 2001-02-16 2002-10-31 Nippon Sheet Glass Co Ltd Rod lens and rod lens array
JP2008094658A (en) * 2006-10-12 2008-04-24 Canon Inc Method for producing optical element and optical element
US11785323B1 (en) 2022-05-27 2023-10-10 Samsung Electronics Co., Ltd. Camera module including refractive member and electronic device including refractive member

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