But zoom lens
The utility model discloses a but zoom lens, including the shell, the centre of a circle department of shell runs through has the through -hole, and the motor cabinet is installed on the inside wall of shell, and micro step motor's lateral wall and motor cabinet are connected, and micro step mo...
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| Main Author | |
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| Format | Patent |
| Language | Chinese English |
| Published |
19.01.2018
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| Subjects | |
| Online Access | Get full text |
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| Summary: | The utility model discloses a but zoom lens, including the shell, the centre of a circle department of shell runs through has the through -hole, and the motor cabinet is installed on the inside wall of shell, and micro step motor's lateral wall and motor cabinet are connected, and micro step motor's output is connected with the piston rod, and the surperficial centre of a circle department of piston one end has seted up the connecting hole, through external screw thread and inner thread meshed between piston and the piston rod, through first sealing washer and second sealing washer swing jointbetween piston and the piston hole. This but zoom lens, when the inner wall of the lateral wall of piston and through -hole flushed, refraction liquid can not receive pressure, and the film is in smooth stage, and when micro step motor promoted the piston and outwards slides, the piston pushed refraction liquid, and the deformation to the evagination takes place for the film, and when micro stepmotor promoted the piston |
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| Bibliography: | Application Number: CN20172444287U |