made-to-order for a high precision optical lens, substrate, filter, wafer, special prism, plastic tray for packing, coating plate etc.

本文とグローバルメニュー・サイドメニュー・フッターへジャンプするためのナビゲーションスキップです。

GENERAL CORPORATION

TEL No. +81-3-3969-3731

GENERAL BLDG. 2F, 1-25-20 SAKASHITA ITABASHI-KU TOKYO 174-0043 JAPAN

本文のエリアです。

Lens Manufacturing

Manufacturing Flow

Manufacturing flow (Factory tour) for Lens

6.Lens assembly

This is a process that setting the finished lens in the lens barrel of metal parts.
By this combination, it will be easy handling to achieve the required optical performance.

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Quality Assurance

2.Quality inspection

After dropping the dirt between every each steps, we will inspect the product in each step whether these has been properly made within the scope of the standard.
Analysis of surface accuracy after polishing. Eccentricity measure after Centering. Confirm the color, wavelength and durability after the coating.  

Final inspection (before shipment) and, packing

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Capabilities

Processing Quantity For lens Processing quantity
Grinding 50,000pcs per month
Polishing 150,000pcs per month
Centering 800,000pcs per month
Coating 1,200,000pcs per month
Cementing / Painting 30,000pcs per month

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Facility details

Manufacturing Facility

Manufacturing Facility Manufacturer Number of Unit
Spherical Grinding Machine (manual) KOSHIN SEIMITSU 6
Pelleting Machine (semi-automatic) KOSHIN SEIMITSU 13
Spherical polishing machine
(semi-automatic)
KOSHIN SEIMITSU 12
CNC Polishing Machine KOJIMA ENGINEERING 2
Plane Grinding Machine 12B / 20B TAMUKAI SEISAKUSHO 1
Plane Polishing Machine 12B / 20B TAMUKAI SEISAKUSHO 1
Centering Machine (full-automatic) SHONAN / TATENO 20
Centering Machine (manual) SHONAN / TATENO 23
Single-layer Anti-reflection
Automatic Optical Thin
Film Coater 800φ
SHOWA 2
Anti-reflection Optical Thin
Film Coater 800φ
SHINCRON 4
Anti-reflection Optical Thin
Film Coater 1000φ
SHINCRON 2
Multilayer Optical Thin
Film Coater 1000φ
KAWAI OPTICS 2
Multilayer Optical Thin
Film Coater 1100φ
(with Ion Source)
SHINCRON 1
Multilayer Optical Thin
Film Coater 1300φ
OPTORUN 2
Multilayer Optical Thin
Film Coater 1300φ
(with Ion Source)
OPTORUN 2
Ultrasonic Washing Machine
9 tanks type (manual)
- For polishing, centering
OKABE SEISAKUSYO 1
Ultrasonic Washing Machine
12 tanks type (automatic)
- For centering
SONIC FELLOW 1
Ultrasonic Washing Machine
16 tanks type (automatic)
- For coating
SONIC FELLOW 1
Ultrasonic Washing Machine
11 tanks type (automatic)
- For coating
SONIC FELLOW 1
Ultrasonic Washing Machine
13 tanks type (automatic)
- For coating
SONIC FELLOW 1
Ultrasonic Washing Machine
8 tanks type (manual)
- For coating
SUN CORPORATION 1
Vacuum packing equipment   2
Lathe – For creating tools, correction   2

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Inspection Equipment

Inspection Equipment Manufacturer Number of Unit
Laser interferometer analyzer
(with software
 for RSI measurement)
OLYMPUS 3
Laser interferometer analyzer AKION 1
Transmission type
eccentricity measurement device
PEARL 4
Reflective eccentricity
measurement device
OLYMPUS 1
High precision
double-sidedreflective eccentricity
measurement device
SCHNEIDER 1
Spectrophotometer HITACHI 3
Spectrophotometer NIHON BUNKO 1
Spectrophotometer OLYMPUS 1
CCD microscope SCHOTT MORITEX 1
Stereomicroscope OLYMPUS 1
Stereomicroscope CARTON 1
Toolmaker's Microscope MITSUTOYO 1
Temperature and Humidity
Control equipment
  1
Visual inspection
for fluorescent lamp 27W
  20
Visual inspection
for cabin slide 150W
  20
Edge thickness measuring instrument   1

 

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