摘要:
An illumination device includes: a sheet-shaped, flexible illumination panel including on its surface a light emitting face being configured to emit light when supplied with electrical power; a main body including a mounting face whereon the illumination panel is to be mounted; and an installation cover to be installed on the main body and including a pressing region pressing the light emitting face of the illumination panel against the mounting face of the main body. With the illumination device, it is possible to achieve desired light distribution characteristics of the sheet-shaped illumination panel.
摘要:
A drive device (30) of the invention supplies, to a shape memory alloy member (15), an electric pulse having a pulse cycle shorter than a predetermined cycle for reading out an image from an imaging element. The drive device (30) having the above configuration is advantageous in preventing or suppressing noise which may affect peripheral circuits resulting from a frequency component of a drive current.
摘要:
A thermosensitive recording adhesive sheet capable of forming colored images thereon upon application of heat, comprising (a) a support material with print patterns on the front side or back side thereof, (b) a thermosensitive coloring layer formed on the support material, (c) an adhesive layer formed on the back side of the support material, opposite to the thermosensitive coloring layer, and (d) a disposable backing sheet which is attached to the adhesive layer and can be peeled off the adhesive layer when the thermosensitive recording adhesive label is used. When necessary, (e) a protective layer for protecting the thermosensitive coloring layer and for improving the thermal head matching properties of the thermosensitive coloring layer can be formed on the thermosensitive coloring layer. Further, (f) an undercoat layer which is interposed between the support material and the thermosensitive coloring layer and (g) a back coat layer which bears a print pattern and is formed on the back side of the support material, opposite to the undercoat layer, can also be formed.
摘要:
An automatic assembly machine having multiple assembling heads in which a multiplicity of parts are assembled on a principal part at different positions, characterized by comprising a movable table carrying the principal part, and a plurality of assembling heads, fixedly disposed above the table along the area of movement thereof, for feeding and assembling different parts, said table being driven under the control of a numerical control device for operating on the coordinates of a position corresponding to a selected one of said assembling heads and on the coordinates of positions on the principal part at which the parts are to be assembled.
摘要:
A shape memory alloy drive device has drive control portion for displacing a shape memory alloy up to a target displacement value by applying a voltage or an electric current to the shape memory alloy by servo control, and also has contact detection portion for detecting a predetermined change in a drive control value, or, for example, a sharp increase in the drive control value, representing the amount of the voltage of the electric current applied by the drive control portion. When detecting a predetermined change, the contact detection portion determines that a movable portion having a lens etc. mounted thereon is in contact with a stationary mechanism. The shape memory alloy drive device further has drive limiting portion which, when the determination described above is made, causes the drive control portion to limit the target displacement value within a predetermined range. This limits an electric current flowing when the movable portion makes contact with the stationary mechanism, preventing overheating and excess stress.
摘要:
A storing section (70) stores a second initial contact instruction value, which is predefined as an instruction value for positioning a movable portion (5) to a second contact position where the movable portion (5) is contacted with a stopper (8), and an initial standby instruction value, which is predefined as an instruction value for positioning the movable portion (5) to a specified standby position within a moving range of the movable portion (5). A correcting section (42) calculates an actual standby instruction value by correcting the initial standby instruction value, based on a second actual contact instruction value obtained when a contact detection section (41) has detected that the movable portion (5) is positioned to the second contact position, and the second initial contact instruction value. A setting section (43) sets a standby position corresponding to the actual standby instruction value, as an actual standby position of the movable portion (5).
摘要:
A shape memory alloy driver comprises a displacement detection portion, a drive control portion, and a compensation calculation portion. The displacement detection portion detects displacement of a shape memory alloy based on a resistance value etc. detected from the shape memory alloy. The drive control portion applies a voltage or current to the shape memory alloy by servo control to thereby displace the shape memory alloy to a target displacement value fed from a microcomputer etc. The compensation calculation portion calculates a compensated displacement value from the detected displacement value and a variation—attributable to the environment temperature—of the drive control value which the drive control portion uses for controlling the voltage or current. Having been fed with the compensated displacement value, the drive control portion varies the drive control value such that the compensated displacement value is equal to the target displacement value.
摘要:
In a shape memory alloy actuator driving device, a predetermined constant current is applied to a shape memory alloy member as a retrieval signal to detect a terminal voltage of the shape memory alloy member, and a detection result of the terminal voltage is compared with a target voltage value to be calculated based on a target resistance value of the shape memory alloy member and a value of the constant current to cause a driving circuit to output, to the shape memory alloy member, a drive current that makes the detection result substantially equal to the target voltage value.
摘要:
A shape memory alloy driver comprises a displacement detection portion, a drive control portion, and a compensation calculation portion. The displacement detection portion detects displacement of a shape memory alloy based on a resistance value etc. detected from the shape memory alloy. The drive control portion applies a voltage or current to the shape memory alloy by servo control to thereby displace the shape memory alloy to a target displacement value fed from a microcomputer etc. The compensation calculation portion calculates a compensated displacement value from the detected displacement value and a variation—attributable to the environment temperature—of the drive control value which the drive control portion uses for controlling the voltage or current. Having been fed with the compensated displacement value, the drive control portion varies the drive control value such that the compensated displacement value is equal to the target displacement value.
摘要:
A shape memory alloy drive device has drive control portion for displacing a shape memory alloy up to a target displacement value by applying a voltage or an electric current to the shape memory alloy by servo control, and also has contact detection portion for detecting a predetermined change in a drive control value, or, for example, a sharp increase in the drive control value, representing the amount of the voltage of the electric current applied by the drive control portion. When detecting a predetermined change, the contact detection portion determines that a movable portion having a lens etc. mounted thereon is in contact with a stationary mechanism. The shape memory alloy drive device further has drive limiting portion which, when the determination described above is made, causes the drive control portion to limit the target displacement value within a predetermined range. This limits an electric current flowing when the movable portion makes contact with the stationary mechanism, preventing overheating and excess stress.