Embodiments of the invention will be described with reference to the accompanying drawings hereinafter.
A front view of a cellular phone 100 is shown in
A rear view of the cellular phone 100 is shown in
In transmitting the voice, the electronic mail, and the like from the cellular phone 100, the user inputs a phone number, an electronic mail address, or the like by using the push buttons 105 and then presses the OK button 107. Then, the data are sent out to the designated destination of communication via radio communication. The data sent out from the cellular phone 100 are received once by the base station, and then are transmitted to the destination of communication from the base station via telephone line, LAN line, another base station, and the like. Conversely, the data sent out from the destination of communication are received by the base station and converted into radio data, and then are transmitted to the cellular phone 100.
Also, in shooting the subject by using the cellular phone 100, the user presses the select button 104 while aiming the imaging lens 110 shown in
Next, an internal configuration of the cellular phone 100 will be described hereunder.
The imaging lens 110, an iris 111, a CCD 112, an A/D (Analog/Digital) converting portion 113, a microphone 121, a speaker 122, an interface portion 120, a first transmitting/receiving portion 103, an input controller 130, an image signal processing portion 140, a video encoder 150, an image displaying device 160, a second transmitting/receiving portion 109, a memory 170, a CPU 180, a media controller 190, and various switches 181 are provided to the inside of the cellular phone 100. Also, a recording media 191 is connected to the media controller 190.
The select button 104, the push buttons 105, and the like are contained in various switches 181. When various switches 181 are pressed, the effect that these switches are turned ON is transmitted to the CPU 180.
The CPU 180 gives the processing instructions to various elements of the cellular phone 100 shown in
Normally a plurality of lenses are provided to the imaging device that takes a picture of the subject. In this
When the shooting is started, the CCD 112 receives the subject light being passed through the imaging lens 110 and then reads an image of the subject based on the subject light as a subject signal as an analog signal. Here, this CCD 112 corresponds to an example of the imaging device claimed in the invention. The subject signal generated by the CCD 112 is converted into digital data of the picked-up image by the A/D converting portion 113. The converted data of the picked-up image are fed to the image signal processing portion 140 via the input controller 130.
In the image signal processing portion 140, image processings such as RGB level adjustment, gamma correction, etc. are applied to the image data, and also a compressing process is applied to the image data that were subjected to the image processings. The image data after compressed are fed once to the memory 170.
As the memory 170, SDRAM in which programs to be run in the cellular phone 100 are stored and which is used as an intermediate buffer whose recording speed is high, SRAM as a data save memory in which data of various menu screens, contents set by the user, etc. are stored, and VRAM in which compressed image data are stored are contained. The VRAM is divided into plural areas, and the image data are stored sequentially in plural areas. Then, the stored image data are read sequentially by the video encoder 150 and the media controller 190.
The video encoder 150 acquires the compressed image data from the memory 170 in compliance with the instructions from the CPU 180, and converts the compressed image data into the data format that can be displayed on the liquid crystal panel 101. The image data after converted are fed to the input controller 130, and the image that is produced by the image data is displayed on the liquid crystal panel 101 by the input controller 130. The media controller 190 is used to record the image data compressed and stored in the memory 170 on the recording media 191 and read the image data recorded in the recording media 191.
Also, when the phone number is input by using the push buttons 105 shown in
As soon as the connection to the destination device is established, the user's voice being produced toward the cellular phone 100 is collected by the microphone 121 shown in
Also, apart from the communication interface (the first antenna 103a, the first transmitting/receiving portion 103) used to communicate with the destination device such as other cellular phone via the base station, the radio communication interface (the second transmitting/receiving portion 109, the second antenna 109a) used to communicate via a short-distance radio communication without intervention of the base station is provided to this cellular phone 100. As the communication interface for the short-distance radio communication, infrared transmission, Bluetooth, and the like can be applied. In this embodiment, the infrared transmission is applied as the communication interface. When the infrared rays transmitted directly from other cellular phone, or the like are received by the second antenna 109a, an electric signal based on the received infrared rays is picked up by the second transmitting/receiving portion 109 and then converted into digital data. On the contrary, when the data are to be transmitted to the external device, such data are transferred to the second transmitting/receiving portion 109. The data are converted into the radio wave by the second transmitting/receiving portion 109 and radiated from the second antenna 109a.
When the infrared rays representing the image are received by the second antenna 109a, the electric signal based on the infrared rays is converted into image data by the second transmitting/receiving portion 109. Like the picked-up image data, the converted image data are sent to the image displaying device 160 and then the image represented by the image data is displayed on the liquid crystal panel 101 or recorded on the recording media 191 via the media controller 190.
The cellular phone 100 is constructed basically as above.
Here, in the cellular phone 100 of this embodiment, the imaging lens 110 is surely fitted to the lens barrel. Therefore, when the user drops the cellular phone 100 unintentionally, such a drawback can be avoided that the imaging lens 110 comes off the lens barrel. Next, the configurations of the imaging lens 110 and the lens barrel will be described in detail hereunder.
As shown in
The lens 1101 on the front side is molded by an assembly mold having two lateral pieces 301, 302 and two vertical pieces 303, 304.
The assembly mold constructed by assembling the two lateral pieces 301, 302 and the two vertical pieces 303, 304 together has an inner surface that is shaped into the lens 1101. This lens 1101 is molded by pouring a transparent liquid material (e.g., a transparent plastic) into the assembly mold and then removing the lateral pieces 301, 302 laterally and the vertical pieces 303, 304 and vertically after the material is solidified.
Also, convex portions surrounding the object light L is provided in the vertical pieces 303, 304. As a result, a groove 1101a is formed on an outer peripheral surface, which surrounds the subject light L, of the lens 1101 on the front side. Here, the lens 1101 corresponds to a non-limited example of an optical member. Also, the groove 1101a corresponds to a non-limited example of a concave portion.
Meanwhile, as shown in
The abutment portion 11a shown in
When the lens 1101 on the front side is pushed into the lens barrel 200, the lens barrel 200 is deflected because of the presence of the notch 200b. Thus, the lens 1101 is fitted to the foremost surface. At this time, the convex portion 200a formed on the inner surface of the lens barrel 200 is fitted into the groove 1101a provided in the lens 1101 on the front side. The lenses 1101, 1102, 1103 are secured to the lens barrel 200 firmly. Therefore, even though the adhered surface between the lenses 1101, 1102, 1103 and the lens barrel 200 is small, the lenses 1101, 1102, 1103 are surely fixed to the lens barrel 200.
In this embodiment, the lens barrel 200 is molded by using two outer mold pieces 311, 312 and two inner mold pieces 321, 322.
An outer mold 310 formed by assembling the two outer mold pieces 311, 312 has a hollow cylindrical shape. An inner surface of the outer mold 310 is formed to fit a shape of an outer surface of the lens barrel 200 exactly.
An outer peripheral surface of an inner mold 320 formed by assembling the two inner mold pieces 321, 322 is formed to fit a shape of an inner surface of the lens barrel 200 exactly. Also, in the molded lens barrel 200, coupled surfaces (parting line P) of the two inner mold pieces 321, 322 are designed so as to be located in a position corresponding to the groove 1101a of the lens 1101 shown in
First, the outer mold pieces 311, 312 and the inner mold pieces 321, 322 are assembled respectively, and the inner mold 320 is set on the inside of the outer mold 310.
Then, a liquid material 200′ (e.g., a plastic or a metal) is poured into a gap between the outer mold 310 and the inner mold 320.
After the material 200′ is solidified, the outer mold 310 is removed by disassembling the outer mold pieces 311, 312. Then, the inner mold 320 is removed by disassembling the inner mold pieces 321, 322. Thus, the lens barrel 200 is molded.
In this case, the liquid material 200′ tends to come in a gap 200a′ between the inner mold pieces 321, 322, so that a burr is apt to be formed in a position of the parting line P after the inner mold 320 is removed. As described above, since the parting line P of the inner mold pieces 321, 322 is provided in the position corresponding to the groove 1101a of the lens 1101 shown in
In this manner, in this embodiment, the convex portion (burr) 200a formed on the inner surface of the lens barrel 200 is fitted into the groove 1101a provided on the lens 1101 on the front side. Thus, the lenses 1101, 1102, 1103 are secured firmly to the lens barrel 200. Therefore, even though the user drops the cellular phone 100 unintentionally, such a drawback can be avoided surely that the lenses 1101, 1102, 1103 are displaced or come off the lens barrel 200. Also, since the burr formed in molding the lens barrel 200 is utilized as the convex portion that is fitted into the concave portion of the lens 1101, complication of manufacturing steps can be lessened.
In the above description, the example in which the concave portion is provided in the optical member and the convex portion is provided in the optical lens barrel is explained. Also, the convex portion may be provided in the optical member and the concave portion may be provided in the optical lens barrel.
In the above description, the example in which the concave portion and the convex portion are provided in the contact surface of the optical member on the front side and the optical lens barrel is explained. Also, the concave portion and the convex portion may be provided in all contact surfaces of respective optical members and the optical lens barrel.
In the above description, the cellular phone is illustrated as a non-limited example of the imaging device mentioned of the invention. However, the digital camera, or the like may be employed as the imaging device of the invention.
In the above description, the CCD is illustrated as a non-limited example of the imaging device of the invention. However, a CMOS sensor may be employed as the imaging device of the invention.
Number | Date | Country | Kind |
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P 2006-206627 | Jul 2006 | JP | national |