摘要:
A finder structure for a camera, in which the finder is divided into an objective block and an eyepiece block. The housings of these blocks are removably connected with each other, thereby allowing one of the housings to move with respect to the other housing in a direction transversely of the optical axis of the finder to correct parallax. The structure comprises in the finder, a field frame plate, panoramic field frame members defining panoramic field frames, and a field frame changeover lever which engages with the panoramic field frame members. A shaft of the field frame changeover lever is rotatably received in an opening formed in the housing of the finder to engage with a finder drive lever disposed outside the finder, allowing the finder drive lever to be linked to a photography mode changeover lever to slide the panoramic field frame members by operation of the photography mode changeover lever. The finder is incorporated in the camera body by mounting either one of the objective block or the eyepiece block on the camera body, and connecting the other block (not mounted on the camera body) to the block mounted to the body with locking screws or the like. Parallax is corrected by loosening the locking screws to move the block not mounted on the camera body relative to the block mounted on the camera body.
摘要:
A self-photographing method for an autofocus camera, wherein, upon depression of a shutter release button, the subject distance data are detected a plurality of times at periodic intervals, and a predetermined exposure operation, that is, an actual shutter release operation is automatically executed using the autofocus system when the detected subject distance data have changed from each other. The distance data are repeatedly detected and compared with each other until these distance data differ from each other. If the distance data have been equal for a predetermined time interval from the shutter release button depression, then the actual shutter release operation is executed, or is called off and the self-photographing is terminated. It is preferred that the detected change of distance be a decrease of distance, indicating that the photographer has stepped into the picture, whereupon the measured distance becomes his distance in place of the background distance.
摘要:
Rotaton of a steering wheel is transmitted to a steering ratio changing mechanism which displaces an output displacement member according to the steering wheel turning angle to obtain a desired steering ratio. A displacment transmission member transmits the displacement of the output displacement member to a valve member of a hydraulic switching valve and a wheel turning rod is displaced under the force of a hydraulic power cylinder in response to displacement of the valve member. The displacement transmission member is operatively connected to the output displacement member, the valve member and the wheel turning rod to be operated to displace the valve member in a predetermined direction in response to a displacement of the output displacement member and to be operated to displace the valve member in the direction opposite to the predetermined direction in response to a displacement of the wheel turning rod generated by the displacement of the valve member, so that the wheel turning rod is displaced in response to displacement of the output displacement member with the valve member being hardly displaced.
摘要:
A slit exposure type illuminating device mainly applicable to a color electrophotographic copier and using a plurality of lamps includes a single reflector which is provided with a plurality of openings for inserting the lamps. The lamps are arranged in an array along the length of the reflector. One of the lamps is positioned on an optical axis which extends through the center of the reflector with respect to the lengthwise direction of the reflector. The lamps are divided into a first and a second lamp groups in each of which they are arranged symmetrically with respect to the optical axis and individually spaced by predetermined distances from the optical axis. Current is fed either independently or simultaneously to the two different lamp groups. The openings of the reflector are each so adjustable in position and dimension as to prevent the bulb of each lamp from intercepting light.
摘要:
An image forming apparatus has a latent image carrier for carrying an electrostatic latent image formed thereon. The electrostatic latent image is developed into a visible image which is transferred from the latent image carrier onto a transfer sheet in an image transfer region. The transfer sheet is held on a drum-shaped or a belt-shaped holder with the leading end clamped by a clamp. For efficient image formation, the holder is accelerated and decelerated while the transfer sheet is out of the image transfer region. When the transfer sheet with the transferred image thereon is sent to an image fixing device, the holder is accelerated and decelerated during an interval after the trailing end of the transfer sheet has left the image transfer region and before the leading end of the transfer sheet reaches the image fixing device. After the holder has been accelerated and decelerated, it is positionally adjusted when required.
摘要:
The present invention provides a converging light transmitting glass body whose refractive index gradually changes from its central portion to its surface in a direction transverse to a path of light, said glass body containing at least three cations constituting modifying oxides of the glass, a first and a second cation among said cations showing concentration changes of converse gradients from its central portion toward its peripheral surface, and a third cation showing no substantial concentration change at the central portion of the glass body but showing a substantial continuous concentration charge outwardly thereof toward its peripheral surface.The present invention also provides a process for producing the light transmitting glass body which comprises contacting a glass body containing a modifying oxide of a first cation with an ion source containing the second cation to produce a pre-produced glass body, and then contacting the pre-produced glass body with an ion source containing the third cation, or which comprises contacting a glass body containing a modifying oxide of a first cation with an ion source containing a second cation and a third cation.The converting light transmitting glass body of the present invention has an ideal refractive index distribution.
摘要:
A stabilized polyphenylene sulfide is provided which comprises a recurring unit ##STR1## wherein the average n between foreign units is greater than about 5, and about 0.05 to about 10 mole % per phenylene sulfide unit of an aromatic constituent chemically bonded with said polyphenylene sulfide chain, said aromatic constituent containing an electron attractive group selected from the group consisting of --SO.sub.2 --, --CO--, --NO.sub.2, --SO.sub.3 R, --COOR, wherein R is H, lower aliphatic hydrocarbon groups, aromatic hydrocarbon groups or alkaline metals, and --CONH--, and said stabilized polyphenylene sulfide has a melting point in the range of about 250.degree. C. to about 350.degree. C. Also provided is a method for preparing stabilized polyphenylene sulfide comprising preparing a polyphenylene sulfide consisting mainly of a recurring unit ##STR2## wherein the degree of polymerization of said recurring unit is greater than about 20, and reacting said polyphenylene sulfide with about 0.05 to about 20 mole % per said phenylene sulfide unit of a halogenated aromatic compound having an electron attractive group.
摘要翻译:提供了一种稳定的聚苯硫醚,其包含重复单元,其中外来单元之间的平均n大于约5至约10摩尔%,每个苯硫醚单元与所述聚苯硫醚链化学键合的芳族组分 所述芳族成分含有选自-SO 2 - , - CO - , - O 2,-SO 3 R,-COOR的吸电子基团,其中R是H,低级脂族烃基,芳族烃基或碱金属,和 -CONH-,所述稳定化的聚苯硫醚的熔点在约250℃至约350℃的范围内。还提供了制备稳定的聚苯硫醚的方法,包括制备主要由重复单元组成的聚苯硫醚, IMAGE>其中所述重复单元的聚合度大于约20,并且使所述聚苯硫醚与约0.05至约20摩尔% 具有吸电子基团的卤代芳族化合物的苯硫醚单元。
摘要:
A biaxially oriented poly-p-phenylene sulfide film comprising recurring units of the formula ##STR1## a melt viscosity of more than 100 poise and less than 600,000 poise at a shear rate of 200 sec.sup.-1 and at 300.degree. C., and a specific gravity of which is more than 1.330 and less than 1.400. The film has improved mechanical properties, thermal dimensional stability and high temperature durability. Typical applications of the film are as electrical insulation, capacitor, magnetic recording medium, packaging material, and so forth.
摘要:
A lens frame holding a taking lens is movably connected to a driving shaft via a connector. A guide member is disposed at a lower portion of the lens frame so as to separate from the connector by about 180 degrees around an optical axis. The guide member is movably attached to a guide rod. A light emitter is disposed on a lateral side of the lens frame so as to separate from the connector by about 90 degrees around the optical axis. The light emitter applies the light to a light receiver of a line sensor confronting the light emitter. The line sensor sends a light-reception signal, which is outputted from the light receiver, to a lens-position controller. Positional information of the taking lens is obtained on the basis of the light-reception signal so that a position of the taking lens is accurately detected.
摘要:
A heat sink is attached to a subject-side end portion of a barrel body of a lens barrel. The heat sink is provided with a large number of radiation fins formed in whorl. A heat pipe is disposed between the heat sink and a mount-side end portion of the barrel body. A CCD is fixed to the mount-side end portion of the barrel body. Heat of the CCD is transferred to the heat pipe via the mount-side end portion. Successively, the heat is efficiently transferred to the heat sink by the heat pipe. The heat having been transferred to the heat sink is efficiently radiated into the air by the whorl-like radiation fins regardless of conditions of the lens barrel.