JPH0221368B2 - - Google Patents

Info

Publication number
JPH0221368B2
JPH0221368B2 JP23827983A JP23827983A JPH0221368B2 JP H0221368 B2 JPH0221368 B2 JP H0221368B2 JP 23827983 A JP23827983 A JP 23827983A JP 23827983 A JP23827983 A JP 23827983A JP H0221368 B2 JPH0221368 B2 JP H0221368B2
Authority
JP
Japan
Prior art keywords
concave lens
mold
injection
raw material
resin raw
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.)
Expired
Application number
JP23827983A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60129217A (ja
Inventor
Takeshi Ishida
Yoshihiro Ishida
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.)
Ishida Scales Manufacturing Co Ltd
Original Assignee
Ishida Scales Manufacturing 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 Ishida Scales Manufacturing Co Ltd filed Critical Ishida Scales Manufacturing Co Ltd
Priority to JP23827983A priority Critical patent/JPS60129217A/ja
Publication of JPS60129217A publication Critical patent/JPS60129217A/ja
Publication of JPH0221368B2 publication Critical patent/JPH0221368B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP23827983A 1983-12-17 1983-12-17 凹レンズの製造方法およびその装置 Granted JPS60129217A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23827983A JPS60129217A (ja) 1983-12-17 1983-12-17 凹レンズの製造方法およびその装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23827983A JPS60129217A (ja) 1983-12-17 1983-12-17 凹レンズの製造方法およびその装置

Publications (2)

Publication Number Publication Date
JPS60129217A JPS60129217A (ja) 1985-07-10
JPH0221368B2 true JPH0221368B2 (enrdf_load_stackoverflow) 1990-05-14

Family

ID=17027821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23827983A Granted JPS60129217A (ja) 1983-12-17 1983-12-17 凹レンズの製造方法およびその装置

Country Status (1)

Country Link
JP (1) JPS60129217A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS60129217A (ja) 1985-07-10

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