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pederd · 03-31-2011, 03:35 AM

If anyone is interested: TORIC MOTOR AND LENS BARREL HAVING ... - Google Patent Search

/P

**Rondec** · 03-31-2011, 03:55 AM

Maybe there is hope for faster in lens motors. Unfortunately, a lot of patents never see the light of day, they are more hedging bets against possible future moves.

Cannikin · 03-31-2011, 04:03 AM

It appears that this patent was filed more than a year ago. It's probably already been implemented as the DC motor in the 18-135 (which Pentax has mentioned would be used for all consumer grade DA lenses from now on, by the way).

Gimbal · 03-31-2011, 04:17 AM

I doubt it, mainly because it's not a DC-motor, secondly a ring motor would be a big thing for Pentax so they would probably advertise it more.

But I doubt it will ever be used, not in that form. It seems way to complicated (read expensive) compared to sonic motors.

Cannikin · 03-31-2011, 05:17 AM

Originally posted by Gimbal

I doubt it, mainly because it's not a DC-motor, secondly a ring motor would be a big thing for Pentax so they would probably advertise it more.

But I doubt it will ever be used, not in that form. It seems way to complicated (read expensive) compared to sonic motors.

Yeah, you're right that it probably hasn't been implemented, as a closer look at the description reveals that this is quite experimental, without any sort of firm design.

However, it should be noted that this patent is about the configuration of the stator/rotor, and not about the driving force behind the motor. It can fundamentally be driven by any number of types of motors, examples of which they state include ultrasonic and brushless DC. The example implementation they give is pretty explicitly a brushless DC motor (see page 8-9).

zackspeed · 03-31-2011, 04:17 PM

Originally posted by Cannikin

It appears that this patent was filed more than a year ago. It's probably already been implemented as the DC motor in the 18-135 (which Pentax has mentioned would be used for all consumer grade DA lenses from now on, by the way).

One year ago was a different patent and this here is not the dc motor used in the 18-135.

**7samurai** · 04-01-2011, 12:27 AM

Still a promising sign that they are thinking. I hope one of them will see the light of day.

zackspeed · 04-01-2011, 03:05 PM

Yes,they are

the swede · 04-02-2011, 12:28 AM

Originally posted by zackspeed

Yes,they are

mid or end of 2012?

**Rondec** · 04-02-2011, 04:24 AM

What I would be hoping for would be re releases of the DA 16-50 and 50-135 with such a motor.

03-31-2011, 03:35 AM	#1
pederd New Member Join Date: Mar 2009 Location: Norrtälje, Sweden Posts: 14	Ring motor If anyone is interested: TORIC MOTOR AND LENS BARREL HAVING ... - Google Patent Search /P

03-31-2011, 05:17 AM	#5
Cannikin Pentaxian Join Date: Mar 2010 Location: SW Washington Posts: 832	Originally posted by Gimbal I doubt it, mainly because it's not a DC-motor, secondly a ring motor would be a big thing for Pentax so they would probably advertise it more. But I doubt it will ever be used, not in that form. It seems way to complicated (read expensive) compared to sonic motors. Yeah, you're right that it probably hasn't been implemented, as a closer look at the description reveals that this is quite experimental, without any sort of firm design. However, it should be noted that this patent is about the configuration of the stator/rotor, and not about the driving force behind the motor. It can fundamentally be driven by any number of types of motors, examples of which they state include ultrasonic and brushless DC. The example implementation they give is pretty explicitly a brushless DC motor (see page 8-9). Last edited by Cannikin; 03-31-2011 at 05:39 AM.

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03-31-2011, 03:55 AM	#2
Rondec Site Supporter Join Date: Mar 2009 Location: Gladys, Virginia Photos: Gallery Posts: 18,341	Maybe there is hope for faster in lens motors. Unfortunately, a lot of patents never see the light of day, they are more hedging bets against possible future moves.

03-31-2011, 04:03 AM	#3
Cannikin Pentaxian Join Date: Mar 2010 Location: SW Washington Posts: 832	It appears that this patent was filed more than a year ago. It's probably already been implemented as the DC motor in the 18-135 (which Pentax has mentioned would be used for all consumer grade DA lenses from now on, by the way).

03-31-2011, 04:17 AM	#4
Gimbal Pentaxian Join Date: Apr 2007 Location: Sweden Posts: 2,038	I doubt it, mainly because it's not a DC-motor, secondly a ring motor would be a big thing for Pentax so they would probably advertise it more. But I doubt it will ever be used, not in that form. It seems way to complicated (read expensive) compared to sonic motors.

03-31-2011, 04:17 PM	#6
zackspeed Veteran Member Join Date: Mar 2010 Posts: 527	Originally posted by Cannikin It appears that this patent was filed more than a year ago. It's probably already been implemented as the DC motor in the 18-135 (which Pentax has mentioned would be used for all consumer grade DA lenses from now on, by the way). One year ago was a different patent and this here is not the dc motor used in the 18-135.

04-01-2011, 12:27 AM	#7
7samurai Site Supporter Join Date: Apr 2010 Location: Rancho Cucamonga, CA Photos: Albums Posts: 472	Still a promising sign that they are thinking. I hope one of them will see the light of day.

04-01-2011, 03:05 PM	#8
zackspeed Veteran Member Join Date: Mar 2010 Posts: 527	Yes,they are

04-02-2011, 12:28 AM	#9
the swede Inactive Account Join Date: Aug 2009 Posts: 2,311	Originally posted by zackspeed Yes,they are mid or end of 2012?

04-02-2011, 04:24 AM	#10
Rondec Site Supporter Join Date: Mar 2009 Location: Gladys, Virginia Photos: Gallery Posts: 18,341	What I would be hoping for would be re releases of the DA 16-50 and 50-135 with such a motor.

Ring motor

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