Sony Corporation

Daizo Oka

Toshiyuki Shirasu

Tessho Ishida

Hirobumi Nagumo

Hiroyasu Morikawa

Disclosed herein is a projector for projecting an image to a screen, including: a lamp configured to emit light; an elliptic reflecting mirror configured to reflect and condense the light from the lamp; a sensor configured to detect the amount of the light reflected and condensed by the elliptic reflecting mirror; a lamp power supply configured to supply power to the lamp to drive the lamp; and a control circuit configured to successively increase the power to be supplied from the lamp power supply to the lamp until after a variation value of the amount of the reflected light detected by the sensor becomes equal to or lower than a predetermined threshold value.

Projector and control method therefor to suppress flickering

A projector that can be loaded with lamps of a plurality of kinds, each of a plurality of the lamps loadable into the projector being given a lamp serial code formed by arranging lamp information including at least a minimum wattage and a maximum wattage of the lamp and a check sum in predetermined order, the projector including: a lamp power supply for driving the lamp loaded in the projector, the lamp power supply being provided in advance with a plurality of mode ranges each as a range from a minimum wattage to a maximum wattage of output of the lamp power supply, and one predetermined mode range of the plurality of mode ranges being freely set in the lamp power supply; and a control circuit for controlling the lamp power supply.

Projector and control method thereof

Disclosed herein is a projector for projecting an image to a screen, including: a lamp configured to emit light; an elliptic reflecting mirror configured to reflect and condense the light from the lamp; an image display device configured to modulate the light reflected and condensed by the elliptic reflecting mirror with image data corresponding to the image to convert the reflected light into image light; a projection lens disposed between the screen and the image display device and configured to project the image light from the image display device to the screen; and a position adjustment mechanism configured to displace the bright point of the lamp from a first focus of the elliptic reflecting mirror to adjust the position of the lamp so as to decrease the effective light amount of the image display device.

Projector and control method therefor

Disclosed herein is an image forming apparatus that emits a beam corresponding to an image onto an image-projected object to allow the image to be formed thereon. The apparatus includes: a lamp; a lamp power supply; a lens; a brightness sensor that measures a lamp brightness; a memory that stores, as a reference brightness value, the lamp brightness measured at a first time when brightness of the beam on the image-projected object has reached a target value; and a control circuit. At a second time, the control circuit performs first control of generating or updating and storing correspondence information. At a third time, the control circuit performs second control of identifying a level of an output power of the lamp power supply corresponding to the reference brightness value, and driving the lamp power supply with the identified level of the output power.

Image forming apparatus, method of controlling same, and program

Disclosed herein is a projector that can be loaded with lamps of a plurality of kinds, each of a plurality of the lamps loadable into the projector being given a lamp serial code formed by arranging lamp information including at least a minimum wattage and a maximum wattage of the lamp and a check sum in predetermined order, the projector including: a lamp power supply for driving the lamp loaded in the projector, the lamp power supply being provided in advance with a plurality of mode ranges each as a range from a minimum wattage to a maximum wattage of output of the lamp power supply, and one predetermined mode range of the plurality of mode ranges being freely set in the lamp power supply; and a control circuit for controlling the lamp power supply.

An image forming device for forming an image on an image forming object by irradiating the image forming object with a luminous flux corresponding to the image, the image forming device including: a lens having a zoom lens and a focus lens; a driving system; a position sensor; a controlling circuit; and a memory. When the controlling circuit receives a first command, the controlling circuit sets the target values, controls the driving system using the set target values, and performs control to record the respective positions detected by the position sensor in timing of ending the controlling of the driving system in the memory as a first adjustment value. When the controlling circuit receives a second command to read contents of the memory, the controlling circuit reads the first adjustment value from the memory, and controls the driving system using the first adjustment value as the target values.

Growing community of inventors

Kanagawa, Japan

Daizo Oka