摘要:
A lens barrel capable of increasing the moving range of a lens includes: a lens retainer frame for holding a lens; a drive unit for driving the lens retainer frame along the optical axis direction; a first cylinder that holds the drive unit and has a cam follower; a second cylinder that has a cam groove for engaging the cam follower; and a bias part for biasing the first cylinder along the optical axis.
摘要:
When an incident light is obliquely incident on an index scale, the optical path length of light A becomes longer than the optical path length of light B and an optical path length difference occurs, which causes a phase difference in both of the diffracted lights incident on a photodetection element. According to the phase difference, intensity of a photoelectric detection signal output from the photodetection element changes. That is, due to a periodic change in the incident angle of the incident light, the phase difference between light A and light B is modulated, and the interference signal becomes greatly modulated.
摘要:
An exposure system is provided which can maintain a predetermined performance of the exposure apparatus stably by maintaining a cooling capacity by preventing a negative pressure from being generated in a circulation path of the liquid and preventing the back pressure from increasing even if at least a part of a temperature adjusting device is disposed under a disposition surface of the exposure apparatus due to the disposition area. A sealed tank which stores the cooling agent which is circulated in the circuiting systems and a pump, etc., which circulates the cooling agent are disposed under the disposition surface FL of the exposure system. The reticle stage and the wafer stage which are objects of which the temperature is supposed to be controlled are disposed above the disposition surface FL. A tank which open to air is provided so as to prevent the negative pressure from being generated in the reticle stage, etc. such that the tank and the tank are connected by a connecting piping arrangement. Also, the piping arrangement which eliminates the bubbles which are contained in the cooling agent which is circulated in the circulating systems are connected to the circulating systems.
摘要:
When a reticle stage capable of moving while holding a reticle is at a predetermined unloading position, an unloading arm performs unloading of a reticle. Also, the instant or immediately after the reticle is separated from the reticle stage by the unloading arm, the reticle stage is moved to a predetermined loading position where a reticle is loaded onto the reticle stage by a loading arm. This allows the reticle to be loaded onto the reticle stage before the unloading arm completely withdraws from the unloading position, which reduces the downtime between the retile unloading and the reticle loading. Accordingly, the throughput of the exposure apparatus can be improved, since the time required for reticle exchange is reduced.
摘要:
A camera including a body unit and a top cover unit configured to be mounted on the body unit. The body unit has a body section that defines a space within the camera. The camera also includes a component disposed on the top cover unit and a control unit disposed in the space defined within the camera. The control unit controls the component. The camera also includes a connection unit that electrically connects the component and the control unit. The connection unit is disposed proximately close to the space defined within the camera, thereby allowing the top cover unit to be removed from the body unit without disconnecting the component and the control unit and thereby allowing diagnostic operations to be performed within the camera.
摘要:
A lens barrel capable of increasing the moving range of a lens includes: a lens retainer frame for holding a lens; a drive unit for driving the lens retainer frame along the optical axis direction; a first cylinder that holds the drive unit and has a cam follower; a second cylinder that has a cam groove for engaging the cam follower; and a bias part for biasing the first cylinder along the optical axis.
摘要:
A moving grating is arranged on a side of a wafer stage, a light source irradiates a light to the moving grating, diffracted lights generated from the moving grating are interfered by fixed scales and an index scale of which positional relation with the light source is fixed, and a detection instrument detects the interfered light. In this case, since the moving grating is arranged on a side of the wafer stage, upsizing of the entire wafer stage can be suppressed. Further, since interference occurs between a plurality of diffracted lights (e.g., the ±1st-order diffracted light) passing extremely close optical paths, influence caused by a fluctuation of ambient atmosphere becomes less in comparison to conventional interferometers, and thus, a high-precision measurement of positional information of the movable body is possible.
摘要:
A light via first and second index scales is split by a beam splitter, and one of the split lights is received by a first light-receiving element via a movable scale and also the other of the split lights is received by a second light-receiving element via a reference scale, and therefore by computing positional information of the movable scale using an output of the first light-receiving element (a first output) and an output of the second light-receiving element (a second output), movement information of the movable scale can be measured with high precision without being affected by drift of the modulation center (the oscillation center) of the beam.
摘要:
An exposure system is provided which can maintain a predetermined performance of the exposure apparatus stably by maintaining a cooling capacity by preventing a negative pressure from being generated in a circulation path of the liquid and preventing the back pressure from increasing even if at least a part of a temperature adjusting device is disposed under a disposition surface of the exposure apparatus due to the disposition area. A sealed tank which stores the cooling agent which is circulated in the circuiting systems and a pump, etc., which circulates the cooling agent are disposed under the disposition surface FL of the exposure system. The reticle stage and the wafer stage which are objects of which the temperature is supposed to be controlled are disposed above the disposition surface FL. A tank which open to air is provided so as to prevent the negative pressure from being generated in the reticle stage, etc. such that the tank and the tank are connected by a connecting piping arrangement. Also, the piping arrangement which eliminates the bubbles which are contained in the cooling agent which is circulated in the circulating systems are connected to the circulating systems.
摘要:
Disclosed is a single plate projection type display apparatus which is capable of achieving a high luminance without an increase in an output of a light source. A first lens plate having a plurality of lenses divides a light from a light source into a plurality of light beams. A second lens plate having a plurality of lenses superposes the divided plurality of light beams on a light valve, thereby performing an illumination. A color separation optical system composed of dichroic mirrors which are perpendicular to an XY plane and form predetermined angles to each other, performs a color separation for the light beams from the second lens plate. The light valve modulates R, G and B light beams which are incident thereonto. The modulated lights are projected by a projection lens. The whole shape of the second lens plate is a rectangle. The second lens plate is disposed so that a longitudinal direction of the longer side of the whole shape of the rectangle is perpendicular to a plane formed by a normal line to the dichroic mirrors and an optical axis immediately before an incidence onto the dichroic mirrors.