摘要:
An object display method and apparatus is disclosed which can easily display changeover of an entity, and an amusement apparatus is disclosed which can display a simulated burst having reality and punch. The method and apparatus first displays only one of the objects and hides other objects from the field of view. Then, the method and apparatus displays the previously hidden objects and at the same time hides the previously displayed object.
摘要:
An object display method and apparatus is disclosed which can easily display changeover of an entity, and an amusement apparatus is disclosed which can display a simulated burst having reality and punch. The method and apparatus first displays only one of the objects and hides other objects from the field of view. Then, the method and apparatus displays the previously hidden objects and at the same time hides the previously displayed object.
摘要:
A laser processing method which can accurately cut an object to be processed along a line to cut is provided. A modified region 7 formed by multiphoton absorption forms a cutting start region 8 within an object to be processed 1 along a line to cut 5. Thereafter, the object 1 is irradiated with laser light L2 absorbable by the object 1 along the line to cut 5, so as to generate fractures 24 from the cutting start region 8 acting as a start point, whereby the object 1 can accurately be cut along the line to cut 5. Expanding an expandable film 19 having the object 1 secured thereto separates individual chips 25 from each other, which can further improve the reliability in cutting the object 1 along the line to cut 5.
摘要:
A wavelength conversion element is provided as one including a monocrystalline nonlinear optical crystal. The nonlinear optical crystal has: a plurality of first regions having a polarity direction along a predetermined direction; a plurality of second regions having a polarity direction opposite to the predetermined direction; an entrance face into which a fundamental incident wave having a wavelength λ and a frequency ω is incident in a direction substantially perpendicular to the predetermined direction; and an exit face from which a second harmonic with a frequency 2ω generated in the crystal emerges. The plurality of first and second regions are formed as alternately arranged in a period substantially equal to d expressed by a predetermined expression, between the entrance face and the exit face.
摘要:
A laser processing method which can accurately cut an object to be processed along a line to cut is provided. A modified region 7 formed by multiphoton absorption forms a cutting start region 8 within an object to be processed 1 along a line 5 along which the object is intended to be cut. Thereafter, the object 1 is irradiated with laser light L2 transmittable through an unmodified region of the object 1, so as to generate fractures 24 from the cutting start region 8 acting as a start point, whereby the object 1 can accurately be cut along the line 5 along which the object is intended to be cut. Expanding an expandable film 19 having the object 1 secured thereto separates individual chips 25 from each other, which can further improve the reliability in cutting the object 1 along the line 5 along which the object is intended to be cut.
摘要:
An illumination optical system and method illuminates an irradiated surface based on linearly polarized light supplied from a light source. The illumination optical system includes a depolarizer which is selectively positioned between a first position in an optical path of the illumination optical system and a second position outside of the optical path, and has a crystal member whose thickness in a direction along an optical axis of the illumination optical system varies in a direction crossing the optical axis.
摘要:
A laser beam machining method and a laser beam machining device capable of cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, wherein a pulse laser beam is radiated on the predetermined cut line on the surface of the work under the conditions causing a multiple photon absorption and with a condensed point aligned to the inside of the work, and a modified area is formed inside the work along the predetermined determined cut line by moving the condensed point along the predetermined cut line, whereby the work can be cut with a rather small force by cracking the work along the predetermined cut line starting from the modified area and, because the pulse laser beam radiated is not almost absorbed onto the surface of the work, the surface is not fused even if the modified area is formed.
摘要:
A laser processing apparatus comprises a converging lens 31 for converging processing laser light and rangefinding laser light L2 toward a wafer 1, an actuator for actuating the lens 31, a shaping optical system 49 for adding astigmatism to reflected light L3 of the rangefinding laser light, a quadrant photodiode 42 for receiving the reflected light L3 and outputting voltage values corresponding to its light quantities, and a controller for regulating the actuator, and positions a converging point P2 of the rangefinding laser light L2 between a focal point P0 of the lens and the lens 31, so as to make it possible to form a modified region at a position deeper from the front face 3, thereby suppressing adverse effects due to the reflected light L3. The control is based on an arithmetic value subjected to a division by a sum of the voltage values, so as to prevent the arithmetic value from being changed by the quantity of reflected light.
摘要:
An illumination optical system for, when installed in an exposure system, realizing a suitable illumination condition by varying the polarized state of the illumination light according to the pattern characteristics of the mask while suppressing the loss of the intensity of the light. The illumination optical system has a light source unit for supplying a linearly polarized light for illuminating surfaces to be illuminated therewith, and a polarized state changing device for changing the polarized state of the illuminating light from a predetermined polarized state to a nonpolarized state and vice versa. The polarized state changing device is arranged in the optical path between the light source unit and the surfaces to be illuminated. The polarized state changing device can be removed from the illumination optical path and has a depolarizer for selectively depolarizing the incident linearly polarized light.
摘要:
An illumination optical system for, when installed in an exposure system, realizing a suitable illumination condition by varying the polarized state of the illumination light according to the pattern characteristics of the mask while suppressing the loss of the intensity of the light. The illumination optical system has a light source unit for supplying a linearly polarized light for illuminating surfaces to be illuminated therewith, and a polarized state changing device for changing the polarized state of the illuminating light from a predetermined polarized state to a nonpolarized state and vice versa. The polarized state changing device is arranged in the optical path between the light source unit and the surfaces to be illuminated. The polarized state changing device can be removed from the illumination optical path and has a depolarizer for selectively depolarizing the incident linearly polarized light.