Manufacturing device and manufacturing method for lens body of objective lens for ultrafine diameter endoscope

A manufacturing method and manufacturing device technology, applied in the field of manufacturing devices for ultra-fine-diameter endoscope objective lenses, can solve the problems of time-consuming, high cost, etc., and achieve the effects of high efficiency, low production cost, and small diameter tolerance

Pending Publication Date: 2017-08-08
泰州市桥梓光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is very time-consuming and costly

Method used

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  • Manufacturing device and manufacturing method for lens body of objective lens for ultrafine diameter endoscope
  • Manufacturing device and manufacturing method for lens body of objective lens for ultrafine diameter endoscope
  • Manufacturing device and manufacturing method for lens body of objective lens for ultrafine diameter endoscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0045] Such as Figure 5 As shown, the ɸ10×300 H-K9L thick-diameter glass rod 1 is fed into the tube furnace 2, and the rod feeding speed is 1.5mm±0.05mm / min. The inner chamber of the tube furnace 2 is a corundum tube with an inner diameter of 20mm and a length of 210mm. The heating zone, softening zone and annealing zone are set by the distance between the electric furnace wires. The temperature curve is as follows: Figure 6 As shown, the ordinate indicates the temperature (unit ℃), the softening forming temperature is about 850 ℃, the abscissa indicates the length of the furnace (unit cm), the working length of the heating zone is 25-30mm, the working length of the softening zone is about 30mm, and the working length of the annealing zone 150mm. The traction device is a double-manipulator gripping traction 3 in rotation, and the traction speed is 930mm / min. Figure 7 It is a schematic diagram of the structure of the double-manipulator clamping traction device 3 in rotatio...

Embodiment 2）

[0048] use Figure 5 The device, that is, the tube furnace 2, the traction device and the vacuum pressure are constant, and the ɸ10×300 H-K9L thick-diameter glass rod 1 is sent into the tube furnace 2, and the rod feeding speed is set to 1.2mm±0.05mm / minute, The traction speed is 750mm / min, and the cutting speed ω=0.4 rev / min. Such as Figure 8 As shown, the molding temperature of tube furnace 2 dropped by 30°C on average.

[0049] The ultra-fine diameter glass rod 5 formed by forming is 0.4±0.005mm, and the precision meets the requirements.

Embodiment 3）

[0051] Such as Figure 9 As shown, the ɸ10×300 H-K9L thick-diameter glass rod 1 is fed into the tube furnace 2, and the rod feeding speed is 1.5mm±0.05mm / min. The traction device is crawler clamp traction 6, and the traction speed is set to 460mm / min. Figure 10 and Figure 11 It is the structural principle of crawler clamping traction 6. The crawler is divided into active traction crawler 6.16.1 and driven traction crawler 6.26.2. The ultra-fine diameter glass rod 5 is clamped by active traction crawler 6.16.1 and driven traction crawler 6.26.2. The active traction crawler belt 6.16.1 performs linear traction under the rotation of the motor 6.4, and the device is fixed on the frame 6.3. Cutting speed ω=0.6 rpm, vacuum pressure is set to 0.06MPa, such as Figure 9 As shown, the molding temperature of tube furnace 2 is lower than that of Example 2 by an average of 10°C, as Figure 12 .

[0052] The ultra-fine diameter glass rod 5 formed by forming is 0.6±0.01mm, and the pr...

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Abstract

The invention relates to a manufacturing device and a manufacturing method for a lens body of an objective lens for an ultrafine diameter endoscope. The manufacturing device comprises a tube furnace, a traction device and a cutting device which are coaxially arranged on a framework in sequence from left to right. The method comprises the following steps: (1) cutting a glass material block into a long material block; (2) machining the long material block into a thick-diameter glass rod through a rounder, and grinding and polishing the thick-diameter glass rod; (3) conveying the thick-diameter glass rod into the vacuum dustproof tube furnace for heating and softening through a precision speed adjustment motor; (4) pulling the heated and softened thick-diameter glass rod into an ultrafine diameter glass rod through the traction device; and (5) performing grinding and polishing, driving a resin cutter to rotate for cutting through a motor, and performing optical cold machining. During machining of a lens body with the diameter less than 0.7 mm, the lens body is difficult to break, the rejection rate is low, a diameter tolerance is small, and the demand of a client is easy to meet; and moreover, the manufacturing device has the characteristics of low production cost, high efficiency and the like.

Description

technical field [0001] The invention belongs to the field of manufacturing optical lenses, in particular to a manufacturing device and a manufacturing method of an objective lens for an ultra-fine-diameter endoscope. Background technique [0002] The development of endoscopes has a history of more than 200 years, and has made indelible contributions to the fields of minimally invasive medical treatment, industrial non-destructive testing, and trace recognition in public security and law enforcement. Endoscopes have experienced the development stages of rigid endoscopes, fiber optic endoscopes, electronic endoscopes, and capsule endoscopes. Since 1999, the ultra-fine diameter endoscopes were first adopted by Polydiagnost GmbH. in Japan. Fujikura Ltd.'s quartz image fiber (image fiber) and self-focusing lens assembly entered the market, but because the self-focusing lens can only image the object side with a certain working distance, that is, the object side without depth of f...

Claims

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Application Information

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IPC IPC(8): C03B23/047C03B13/01C03B33/06G02B23/24
CPCG02B23/243C03B13/01C03B23/047C03B33/06Y02P40/57
Inventor 徐明泉徐令仪徐秀红苏林毕小梅杨来梅
Owner 泰州市桥梓光电科技有限公司
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