摘要:
The present invention relates to an optical recording disc comprising two disc bases each having a recording layer formed on one surface side of a substrate bonded to each other by the medium of an adhesive layer with both recording layers facing each other. The adhesive layer, containing an adhesive and a reaction initiator, is hardened through polymerization reaction by the reaction initiator and photopolymerization reaction by ultraviolet-ray irradiation. For this reason, the adhesive layers of both disc bases can be bonded together entirely and uniformly and besides, the adhesive layer can rapidly get hardened, which is advantageous for enhancing productivity of a double-face type optical recording disc.
摘要:
There is provided a substrate for an optical recording disk capable of preventing non-uniformity of thickness of the transfer layer due to a camber of the substrate, and having a transfer layer excellent in uniformity of the thickness thereof. The substrate for the optical recording disk is manufactured in such a manner that a portion ranging from a center portion to an outer circumferencial portion of the substrate is forcively deformed in advance prior to the formation of the transfer layer so as to provide substantially a conical-convex shape, and thereafter, the transfer layer is formed onto a surface side of the conical-convex shape of the substrate.
摘要:
A lens barrel includes: a variable-power optical system including a focus lens group; a focus actuator configured to move the focus lens group supported by a support forward or backward in a direction of the optical axis to change a shooting distance; and a moving unit configured to, in response to receiving a driving force for changing a zoom magnification, move a position of the focus lens group in the direction of the optical axis to a position corresponding to the changed zoom magnification. The moving unit is configured to move the focus lens group in the direction of the optical axis by the driving force such that a change in a shooting distance due to a change in the zoom magnification is within a predetermined tolerance when the focus lens group is at a position corresponding to the minimum shooting distance, at every zoom magnification.
摘要:
A camera body includes body-side bayonet lugs concentric with lens-side bayonet lugs, circular-arc openings, a circular arc protrusion positioned inside the camera body and projecting forward and concentric with the body-side bayonet lugs, body-side contact portions provided and arranged on the front end surface of the circular arc protrusion and come into contact with lens-side contact portions which are provided on the lens barrel, and rearward biasers provided immediately behind two of the body-side bayonet lugs to bias and move the lens-side bayonet lugs rearward, wherein two of the body-side contact portions located at both ends in the lengthwise direction and the two rearward biasers lie on radial-direction extension lines of the circular arc protrusion, respectively, as viewed in an optical axis direction.
摘要:
On a rear part side of a revolving frame (5) constituting an upper revolving structure (3), a counterweight (7) holding weight balance with a working mechanism (4) is provided, and on the front side of the counterweight (7), an engine (9) and an exhaust gas post-treatment device (21) for applying purification treatment to an exhaust gas of the engine (9) are provided. The exhaust gas post-treatment device (21) is configured by connecting a PM trapping filter device (22) and an NOx purifying device (23), and the PM trapping filter device (22) is mounted on the engine (9), while the NOx purifying device (23) is mounted on the counterweight (7). When the counterweight (7) is to be removed from the revolving frame (5), the NOx purifying device (23) is supported by a treatment device support bracket (26) mounted on the engine (9). As a result, the counterweight (7) can be removed while the PM trapping filter device (22) and the NOx purifying device (23) are connected.
摘要:
A luminous intensity distribution system includes a first optical element extending in a first direction, and distributes, given that a first direction is taken to be leftward-rightward when viewed frontward-rearward, light having entered a light-incident surface from a right-rear direction and emits the light through a light-emitting surface toward a right-forward direction when viewed from the frontward end, and distributes light having entered the light-incident surface from a left-rear direction and emits the light through the light-emitting surface toward a left-forward direction when viewed from the frontward end; and a second optical element extending in the first direction and that diffuses light having entered the light-incident surface and emits the light through the light-emitting side, with the first optical element and the second optical element being arranged in parallel with each other vertically when viewed frontward-rearward.
摘要:
A camera body includes body-side bayonet lugs concentric with lens-side bayonet lugs, circular-arc openings, a circular arc protrusion positioned inside the camera body and projecting forward and concentric with the body-side bayonet lugs, body-side contact portions provided and arranged on the front end surface of the circular arc protrusion and come into contact with lens-side contact portions which are provided on the lens barrel, and rearward biasers provided immediately behind two of the body-side bayonet lugs to bias and move the lens-side bayonet lugs rearward, wherein two of the body-side contact portions located at both ends in the lengthwise direction and the two rearward biasers lie on radial-direction extension lines of the circular arc protrusion, respectively, as viewed in an optical axis direction.
摘要:
A camera body includes a body-side bayonet lug, wherein a lens-side bayonet lug of a lens barrel is positioned immediately behind the body-side bayonet lug when the lens barrel is mounted to the camera body; an opposed surface formed on the rear surface of the body-side bayonet and positioned immediately in front of the lens-side bayonet lug; a body-side mount surface positioned in front of the opposed surface and with which the lens-side bayonet surface comes into contact; and a body-side contact portion, the front end of which contacts the rear end of the lens-side contact portion when the opposed surface faces the lens-side bayonet lug, the front end of the body-side contact portion being positioned in front of the opposed surface and behind the body-side mount surface.
摘要:
On the right front side of a revolving frame (5) constituting an upper revolving structure (3), an operating oil tank (11) and a fuel tank (12) are arranged. On the front side of this operating oil tank (11) and the fuel tank (12), an equipment accommodating case (13) forming an accommodating space (13A) inside is provided. In the accommodating space (13A) in the equipment accommodating case (13), a control valve unit (20) for controlling supply/discharge of the operating oil and a urea water tank (24) storing urea water for removing nitrogen oxides contained in an exhaust gas of the engine (8) are arranged together.
摘要:
On a rear part side of a revolving frame (5) constituting an upper revolving structure (3), a counterweight (7) holding weight balance with a working mechanism (4) is provided, and on the front side of the counterweight (7), an engine (9) and an exhaust gas post-treatment device (21) for applying purification treatment to an exhaust gas of the engine (9) are provided. The exhaust gas post-treatment device (21) is configured by connecting a PM trapping filter device (22) and an NOx purifying device (23), and the PM trapping filter device (22) is mounted on the engine (9), while the NOx purifying device (23) is mounted on the counterweight (7). When the counterweight (7) is to be removed from the revolving frame (5), the NOx purifying device (23) is supported by a treatment device support bracket (26) mounted on the engine (9). As a result, the counterweight (7) can be removed while the PM trapping filter device (22) and the NOx purifying device (23) are connected.