56results about How to "Increase the total length" patented technology

The invention discloses a wide-angle lens which comprises a first lens group with negative focus length, a diaphragm and a second lens group with positive focus length from an object, wherein the first lens group comprises a first lens with negative focus length, a second lens with negative focus length and a third lens with positive focus length; the second lens group comprises a fourth lens, a fifth lens and a sixth lens, the fourth lens is provided with positive focus length, and the fifth lens and the sixth lens have positive focus length after being glued; and the first lens group and the second lens group meet the following condition of -3<fL1 / fL2<-0.5, wherein fL1 expresses the combined focus length of the first lens group, and fL2 expresses the combined focus length of the second lens group. By adopting six full-glass lens structures, the invention has the advantages of compact structure, better machining manufacturability and low production cost. The wide-angle lens has better imaging quality under the condition of ensuring wide angle, and improves the imaging quality because the whole optical system enlarges the tolerance.

The invention relates to a method for protecting an earth electrode line. The method is characterized by comprising the steps as follows: a third current transformer (T3) and a fourth current transformer (T4) are added to the positions, from two groups of leads of the earth electrode line at an earth electrode tip to a frame respectively; and a third current (IDEE1) flowing through the third current transformer (T3) and a fourth current (IDEE2) flowing through the fourth current transformer (T4) are fed into an electrode protection device in a convertor station through earth electrode line cables respectively, and are logically compared with a first current (IDEL1) flowing through a first current transformer (T1) and a second current (IDEL2) flowing through a second current transformer (T1) at the outlet part of the earth electrode line in the convertor station. Experimental simulation proves that the overall operation safety and reliability of the convertor station can be improved by the earth electrode line added with differential protection; and meanwhile, the method is very helpful to improvement of the operation maintenance and management level of the earth electrode line and promotion of state overhaul work.

A refrigeration system employing carbon dioxide, or the like, as refrigerant of which the pulsation of pressure is reduced sufficiently. The refrigeration system (1) comprises a first refrigerant path (204), p type mufflers (20, 20a), and a second refrigerant path (205). The p type muffler has a first silence space (201), a second silence space (202), and communication paths (203, 203a). The first silence space communicates with the first refrigerant path. The second silence space is arranged below the first silence space. The communication path extends from the lower end of the first silence space toward the outside of the first silence space, and communicates with the second silence space. The second refrigerant path extends from the lower end of the second silence space.

The electronic book reading machine consists of casing, liquid crystal display screen, key array, computer interface, battery compartment and circuit board connected together. Its compression method supports blocked compression and partial decompression. The reading machine decompresses the compressed text to the present reading position and displays text in its display screen; and the partial decompression is direct decompression after equal-width cutting. The "blocked compression" of the present invention can utilize the memory space fully and increase the length and the number of the stored text greatly. The "partial decompression" makes it possible to decompress the required content randomly and this raises the responding speed greatly. The electronic reading machine can be operated easily and flexibly.

The invention discloses a landscape creativity bulletin board, and relates to the technical field of landscape bulletin boards. The landscape creativity bulletin board comprises a base, wherein a rotating table is arranged above the base; the rotating table comprises a rotating plate, supporting legs and rolling balls; a display table comprises three triangle bulletin boards, rotating rods and first gears; the middle of the three triangle bulletin boards is provided with a supporting rod, the top end of the supporting rod is movably connected with the center of the bottom of a curve baffle, the bottom of the supporting rod is movably connected with a second gear meshed with the two first gears, the bottom end of the supporting rod penetrates through the rotating plate and is movably connected with the base. According to the landscape creativity bulletin board, by the rotation of the rotating plate and the autorotation of the triangle bulletin boards taking the rotating rod as a center,LED display screens and paper landscape propaganda pictorials on the triangle bulletin boards can be effectively presented to people from multiple angles, so that the landscape creativity bulletin board has third dimension and feeling of freshness, improves people's aesthetic appreciation and reading interest, increases the publicity space, and strengthens the propaganda work of the landscape.

The invention discloses an optical lens, a camera module and electronic equipment, and the optical lens comprises a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, the object side surface and the image side surface of the second lens are respectively a convex surface and a concave surface; a third lens element with negative refractive power having a concave image-side surface; the object side surface and the image side surface of the fourth lens are convex surfaces; the object side surface and the image side surface of the fifth lens are respectively a concave surface and a convex surface; the object side surface and the image side surface of the sixth lens are concave surfaces; a seventh lens element with refractive power having a concave object-side surface; the image side surface of the eighth lens is a convex surface; the object side surface and the image side surface of the ninth lens are respectively a convex surface and a concave surface; the optical lens satisfies 0.3 lt; sD < 12 > / IMGHlt; and 0.5. With the adoption of the scheme, while the imaging quality is ensured, the optical system has the characteristics of miniaturization and large field angle.

The extender lens apparatus is detachably attached to an image-forming optical system including a first main lens unit disposed closest to an object and a second main lens unit disposed between the first main lens unit and an image plane. The apparatus includes a first extender lens unit to be inserted in a space closer to the first main lens unit than the second main lens unit, and a second extender lens unit to be inserted in a space closer to the image plane than the second main lens unit. The first extender lens unit has a magnification increasing effect. The apparatus is capable of varying a magnification of the image-forming optical system while maintaining good optical performance without greatly increasing the entire length of the image-forming optical system.

The electronic book reading machine consists of casing, liquid crystal display screen, key array, computer interface, battery compartment and circuit board connected together. Its compression method supports blocked compression and partial decompression. The reading machine decompresses the compressed text to the present reading position and displays text in its display screen; and the partial decompression is direct decompression after equal-width cutting. The "blocked compression" of the present invention can utilize the memory space fully and increase the length and the number of the stored text greatly. The "partial decompression" makes it possible to decompress the required content randomly and this raises the responding speed greatly. The electronic reading machine can be operated easily and flexibly.

The invention provides an extension device for a vehicle lifter platform, capable of increasing the entire length of the vehicle lifter platform by pulling a platform extension moving portion rearward relative to a platform positioning portion. The extension device is so structured that in a platform automatically lifting when driven by a motor or hydraulic pressure, the platform positioning portion and the platform extension moving portion forms the length for normal use, the platform extension moving portion moves of the platform positioning portion towards the platform protruding direction to extend the platform by a desirable length, and the platform positioning portion and the platform extension moving portion are provided with locking mechanisms to lock in a positioning position and an extension moving position.

The invention discloses a growth frame of a scindapsus aureus cultivation device. The growth frame comprises a first supporting column arranged vertically and further comprises an adjusting device and a second supporting column, wherein the adjusting device is arranged on the first supporting column, and the second supporting column is arranged on the adjusting device and located above the first supporting column. According to the growth frame of the scindapsus aureus cultivation device, due to the fact that the second supporting column is additional arranged on the first supporting column, the total length of the supporting columns can be increased, stems of scindapsus aureus can still climb on the supporting columns as growth of the scindapsus aureus, therefore, the scindapsus aureus can be supported continuously, and the scindapsus aureus can still grow upwards; the additionally-arranged second supporting column can be supported through the adjusting device, the second supporting column is stable, the situation that a supporting column is inclined due to an excessively large length is avoided, and it is guaranteed that the scindapsus aureus is supported reliably.

The invention discloses an adjusting device of a scindapsus aureus cultivation instrument. The scindapsus aureus cultivation instrument comprises a first supporting column, a second supporting column and a first cloth cover. The adjusting device comprises a base and an inner supporting rod, wherein the base is arranged at the upper end of the first supporting column, and the inner supporting rod penetrates through the base and used for pushing the second supporting column upwards. The base is provided with a driving mechanism used for driving the inner supporting rod to move. According to the scindapsus aureus cultivation instrument with the adjusting device, the adjusting device capable of adjusting the height of the second supporting column is additionally arranged, and the adjusting device is used for adjusting the height of the second supporting column, so that the whole length of a growth frame is increased, scindapsus aureus stems still clamber the supporting columns of the growth frame along with the growth of scindapsus aureus, the scindapsus aureus is continuously supported, and the scindapsus aureus still grows up; meanwhile, the additionally-arranged second supporting column can be supported through the adjusting device, so that the second supporting column is stable, the phenomenon that the supporting columns are tilted due to the too large length is avoided, the stability of the growth frame is improved, and it is ensured that the scindapsus aureus is reliably supported.

The invention provides an automatic efficient moisture removal device for a non-woven fabric drying oven. The automatic efficient moisture removal device comprises an air inlet fan, an air outlet fan, a dust removal fan, a driving motor, a dust removal flattening mechanism, an air blowing cylinder, an electric heating plate and an exhaust bottom frame. The air inlet fan is fixedly connected to the outer side of an outer box body through bolts. The air outlet fan is fixedly connected to the right side of the outer box body through bolts. The driving motor is connected to the right side surface of the outer box body through welding. The dust removal flattening mechanism is fixedly connected to the upper surface of the interior of the outer box body, and a pipeline above the dust removal flattening mechanism is fixedly connected to the upper surface of the outer box body. The dust removal fan is fixedly connected to the upper portion of the outer box body through bolts. Therefore, flowing hot air is continuously generated to dry and blow the upper surface of fabric, air near the exhaust bottom frame is extracted under the action of the exhaust bottom frame and the air outlet fan, and the air blowing cylinder and the electric heating plate are matched to suck air from the lower part of the fabric, so that an air penetration effect can be formed on the fabric, and the drying efficiency is improved.

The invention discloses a growth frame of a scindapsus aureus cultivation instrument. The growth frame of the scindapsus aureus cultivation instrument comprises a first supporting column, a first cloth cover, a second supporting column and an adjusting device, wherein the first supporting column is sleeved with the first cloth cover, the second supporting column is vertically arranged and located above the first supporting column, the adjusting device is used for adjusting the height of the second supporting column, and the second supporting column is also sleeved with the first cloth cover. According to the growth frame of the scindapsus aureus cultivation instrument, the second supporting column and the adjusting device capable of adjusting the height of the second supporting column are additionally arranged, and the height of the second supporting column is adjusted through the adjusting device, so that the whole length of the growth frame is increased, scindapsus aureus stems still clamber the supporting columns of the growth frame along with the growth of scindapsus aureus, the scindapsus aureus is continuously supported, and the scindapsus aureus still grows up; meanwhile, the additionally-arranged second supporting column can be supported through the adjusting device, so that the second supporting column is stable, the phenomenon that the supporting columns are tilted due to the too large length is avoided, the stability of the growth frame is improved, and it is ensured that the scindapsus aureus is reliably supported.

The adapter (6) is made of plastic, and is connected to a drive shaft (7) in a force-fit manner for power transmission. A hub (8) is formed, which returns from an end (9) which is averted from a housing (3) of a tubular drive device (1), to a free end (10) of the drive shaft. A side (11) of the hub, which is turned away from the housing, forms an outer side (12) of the adapter.

The invention discloses a regulating device for a Scindapsus aureus cultivation apparatus. The Scindapsus aureus cultivation apparatus comprises a cultivation container, a first support post and a second support post. The regulating device comprises a base and an inner support rod penetrating the base; one end of the base is connected with the first support post, and the other end of the base is connected with the second support post; the upper end of the inner support rod is inserted into the second support post, and the lower end of the inner support rod is inserted into the first support post; a guide block admitting passage of the inner support rod is disposed inside the second support post; a slide connected with the lower end of the inner support rod is disposed inside the first support post; the base is provided with a drive mechanism which is connected with the slider and which is used for driving the slide to linearly move. The second support post added can be supported by the regulating device to stabilize, the problems such that a growth rack skews due to excess length are avoided, the growth rack is more stable, and reliable support is provided for a Scindapsus aureus plant.